4adbb20c5d
Tessellation and DIMBASELINE pick up the few DimStyle fields that were still hard-coded or ignored: - DIMTMOVE = 1 draws a connector segment from the dim-line anchor to the saved text_middle_point when the text has been moved - Leader arrows are resolved via the leader's DIMSTYLE → DIMLDRBLK; the shape (closed-filled / open / dot / tick / …) is drawn through the same arrow emitter the dim path uses, including fill_tris for filled blocks - DIMBASELINE picks up DIMDLI from the active DimStyle instead of the hard-coded 1.5 increment - DIMTOFL / DIMTIX / DIMATFIT / DIMUPT / DIMTXTDIRECTION are read so the fields round-trip on save; their effect is at dim creation, not render, so they're acknowledged with a no-op block Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
3040 lines
111 KiB
Rust
3040 lines
111 KiB
Rust
// Tessellation — convert acadrust EntityType to GPU-ready WireModel or MeshModel.
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||
//
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// Flow:
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// EntityType
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// ↓ acad_to_truck::convert()
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// TruckEntity { object: TruckObject, snap_pts, tangent_geoms, key_vertices }
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||
// ↓ truck_tess::tessellate_*()
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// TruckTessResult::Lines → WireModel
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// TruckTessResult::Point → WireModel (small cross)
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// TruckTessResult::Mesh → MeshModel
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// TruckObject::Text → one WireModel per glyph stroke (elevation from entity Z)
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//
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// Entities not handled by acad_to_truck (Viewport, Hatch, …) are tessellated
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// by the legacy geometry() path so nothing regresses.
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use crate::entities::multileader::{catmull_rom_pts, v_offset_for_attachment};
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use acadrust::entities::{
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Dimension, Leader, LeaderContentType, MultiLeader, MultiLeaderPathType, Text,
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TextAttachmentPointType,
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};
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use acadrust::tables::DimStyle;
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use acadrust::types::{Color as AcadColor, Vector3};
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use acadrust::{CadDocument, EntityType, Handle};
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use glam::Vec3;
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use crate::scene::acad_to_truck::{convert, TruckObject};
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use crate::scene::truck_tess::{
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tessellate_edge, tessellate_vertex, tessellate_wire, TruckTessResult,
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};
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use crate::scene::wire_model::{SnapHint, TangentGeom, WireModel};
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// ── Arc tessellation helpers ─────────────────────────────────────────────
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/// Convert hatch-boundary arc `(start, end, ccw)` into a
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/// `(start, signed_span)` ready for the sampling loop. Matches the
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/// legacy `(TAU - sa, TAU - ea)` flip used here for years — direction
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/// semantics are preserved on real files. (Wrap-through-2π is a known
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/// edge case in that convention; do not "fix" it without a wider audit
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/// of how upstream writers emit CW boundary arcs.)
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pub(super) fn arc_signed_span(start: f64, end: f64, ccw: bool) -> (f64, f64) {
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const TAU: f64 = std::f64::consts::TAU;
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let (sa, ea) = if ccw { (start, end) } else { (TAU - start, TAU - end) };
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(sa, ea - sa)
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}
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/// Segment count for an arc, targeting `chord_tol_world` chord-height
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/// error in world units. Floor 8, cap 512.
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///
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/// Two production callers:
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/// - hatch fill polygon (built at load / on edit) passes a radius-
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/// relative tol via [`fill_chord_tol`] — ~0.1% radius, zoom-free so
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/// the polygon stays sharp at extreme zoom-in without re-tessellation.
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/// - hatch wire outline (re-tessellated every frame inside the render
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/// scope) passes a zoom-adaptive tol via [`wire_chord_tol`] — pulls
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/// from the per-frame override set by `Scene::wires_for_block` so
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/// far-out arcs collapse to a handful of segments.
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pub(super) fn arc_segments(radius: f64, span_abs: f64, chord_tol_world: f64) -> u32 {
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if span_abs < 1e-9 || radius < 1e-9 {
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return 1;
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}
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let tol = chord_tol_world.max(1e-9).min(radius * 0.99);
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// θ where r * (1 - cos(θ/2)) = tol → θ = 2 * acos(1 - tol/r).
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let max_step = (2.0 * (1.0 - tol / radius).acos()).max(1e-6);
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((span_abs / max_step).ceil() as u32).clamp(8, 512)
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}
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/// Chord tolerance for the load-time fill polygon: 0.1% of radius,
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/// floor 1 µm so degenerate radii still produce a workable count.
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pub(super) fn fill_chord_tol(radius: f64) -> f64 {
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(radius * 0.001).max(1e-6)
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}
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/// Chord tolerance for the per-frame wire outline: pulls the active
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/// `truck_tess::set_curve_tol_override` value (Scene sets it to
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/// `world_per_pixel × 0.5` so curves stay at ~half-pixel chord error at
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/// the current zoom). When no override is active (snap / hit-test
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/// passes, load-time builds), falls back to [`fill_chord_tol`] so we
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/// never under-sample.
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pub(super) fn wire_chord_tol(radius: f64) -> f64 {
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match crate::scene::truck_tess::active_curve_tol() {
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Some(t) => t.min(fill_chord_tol(radius)).max(1e-9),
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None => fill_chord_tol(radius),
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}
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}
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// ── Colour helper ──────────────────────────────────────────────────────────
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/// Convert an acadrust Color (ACI index or true-color) to a GPU RGBA value.
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pub fn aci_to_rgba(color: &AcadColor) -> [f32; 4] {
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if let Some((r, g, b)) = color.rgb() {
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[r as f32 / 255.0, g as f32 / 255.0, b as f32 / 255.0, 1.0]
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} else {
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WireModel::WHITE
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}
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}
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// ── Public entry points ────────────────────────────────────────────────────
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/// Tessellate one entity into a WireModel.
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/// For Text/MText entities this produces one WireModel with all glyph strokes
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/// encoded as NaN-separated segments (wire_gpu skips NaN pairs).
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/// For Solid3D entities this returns an empty wire; mesh tessellation lives
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/// in `solid3d_tess` and is uploaded via the mesh pipeline instead.
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pub fn tessellate(
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document: &CadDocument,
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handle: Handle,
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entity: &EntityType,
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selected: bool,
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entity_color: [f32; 4],
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pattern_length: f32,
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pattern: [f32; 8],
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line_weight_px: f32,
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world_offset: [f64; 3],
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anno_scale: f32,
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) -> WireModel {
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let color = if selected {
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WireModel::SELECTED
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} else {
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entity_color
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};
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let name = handle.value().to_string();
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// Determine effective annotation scale for this entity.
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//
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// AutoCAD's R2007+ "annotative" system marks objects via extension-
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// dictionary records or "AcAnnoPO" / "AcAnnotativeData" xdata. Only
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// entities so marked should be auto-scaled by the viewport's
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// paper-scale; everything else is treated as manually pre-scaled
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// (old DXF/DWG convention with $DIMSCALE and oversized text).
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//
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// Default: NOT annotative (anno_scale = 1.0). Opt-in via explicit
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// xdata marker. Files that mark every entity annotative are rare; the
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// pre-R2007 manual-scale convention is far more common in field data.
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let anno_scale = {
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let xdata = &entity.common().extended_data;
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let is_annotative = xdata.get_record("AcAnnoPO").is_some()
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|| xdata.get_record("AcAnnotativeData").is_some();
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if is_annotative {
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anno_scale
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} else {
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1.0
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}
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};
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// MultiLeader is handled by scene/mod.rs since it emits multiple WireModels
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// (leader, text, frame, fill) with distinct colors.
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if let EntityType::Leader(leader) = entity {
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return tessellate_leader_single(
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document,
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handle,
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leader,
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selected,
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entity_color,
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line_weight_px,
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world_offset,
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anno_scale,
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);
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}
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// ── Try the truck path first ───────────────────────────────────────────
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if let Some(te) = convert(entity, document) {
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match te.object {
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// ── Text / MText: pre-tessellated glyph strokes ───────────────
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TruckObject::Text(stroke_groups) => {
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// Each TextStroke keeps its strokes in glyph-local space and
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// its world origin as f64. Subtract world_offset in f64 before
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// casting to f32 so large UTM coordinates don't crush precision.
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let [ox, oy, oz] = world_offset;
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let elev = entity_z(entity) - oz as f32;
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let mut points: Vec<[f32; 3]> = Vec::new();
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let mut first = true;
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// Annotation scale: scale glyph strokes relative to the text
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// insertion point (first group's origin) so multi-line MText
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// lines spread apart correctly as well as growing in size.
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let ref_origin = stroke_groups
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.first()
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.map(|g| g.origin)
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.unwrap_or([0.0, 0.0]);
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let ref_lx = (ref_origin[0] - ox) as f32;
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let ref_ly = (ref_origin[1] - oy) as f32;
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for group in &stroke_groups {
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let lx = (group.origin[0] - ox) as f32;
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let ly = (group.origin[1] - oy) as f32;
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let slx = (lx - ref_lx) * anno_scale + ref_lx;
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let sly = (ly - ref_ly) * anno_scale + ref_ly;
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for stroke in &group.strokes {
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if stroke.len() < 2 {
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continue;
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}
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if !first && !points.is_empty() {
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points.push([f32::NAN, f32::NAN, f32::NAN]);
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}
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first = false;
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for &[x, y] in stroke {
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points.push([x * anno_scale + slx, y * anno_scale + sly, elev]);
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}
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}
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}
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let snap_pts = offset_snap_pts(te.snap_pts, world_offset);
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let [ox, oy, oz] = world_offset;
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let key_vertices: Vec<[f32; 3]> = te
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.key_vertices
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.into_iter()
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.map(|[x, y, z]| [(x - ox) as f32, (y - oy) as f32, (z - oz) as f32])
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.collect();
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return WireModel {
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name,
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points,
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color,
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selected,
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pattern_length: 0.0,
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pattern: [0.0; 8],
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line_weight_px,
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snap_pts,
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tangent_geoms: te.tangent_geoms,
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aci: 0,
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key_vertices,
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aabb: WireModel::UNBOUNDED_AABB,
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plinegen: true,
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vp_scissor: None,
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fill_tris: vec![],
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};
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}
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// ── Standard topology objects ─────────────────────────────────
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TruckObject::Point(v) => {
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let result = tessellate_vertex(&v, world_offset);
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match result {
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TruckTessResult::Point([x, y, z]) => {
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let s = 0.1_f32;
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let snap_pts = offset_snap_pts(te.snap_pts, world_offset);
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let [ox, oy, oz] = world_offset;
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let key_vertices: Vec<[f32; 3]> = te
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.key_vertices
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.into_iter()
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.map(|[kx, ky, kz]| {
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[(kx - ox) as f32, (ky - oy) as f32, (kz - oz) as f32]
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})
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.collect();
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return WireModel {
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name,
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points: vec![
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[x - s, y, z],
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[x + s, y, z],
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[x, y - s, z],
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[x, y + s, z],
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],
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color,
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selected,
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pattern_length: 0.0,
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pattern: [0.0; 8],
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line_weight_px: 1.0,
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snap_pts,
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tangent_geoms: te.tangent_geoms,
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aci: 0,
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key_vertices,
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aabb: WireModel::UNBOUNDED_AABB,
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plinegen: true,
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vp_scissor: None,
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fill_tris: vec![],
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};
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}
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_ => {}
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}
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}
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TruckObject::Curve(e) => {
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if let TruckTessResult::Lines(points) = tessellate_edge(&e, world_offset) {
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let [ox, oy, oz] = world_offset;
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let snap_pts = offset_snap_pts(te.snap_pts, world_offset);
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let key_vertices: Vec<[f32; 3]> = te
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.key_vertices
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.into_iter()
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.map(|[x, y, z]| [(x - ox) as f32, (y - oy) as f32, (z - oz) as f32])
|
||
.collect();
|
||
return WireModel {
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||
name,
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points,
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color,
|
||
selected,
|
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pattern_length,
|
||
pattern,
|
||
line_weight_px,
|
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snap_pts,
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tangent_geoms: te.tangent_geoms,
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aci: 0,
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key_vertices,
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aabb: WireModel::UNBOUNDED_AABB,
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plinegen: true,
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||
vp_scissor: None,
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||
fill_tris: vec![],
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||
};
|
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}
|
||
}
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||
|
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TruckObject::Contour(w) => {
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if let TruckTessResult::Lines(points) = tessellate_wire(&w, world_offset) {
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let [ox, oy, oz] = world_offset;
|
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let snap_pts = offset_snap_pts(te.snap_pts, world_offset);
|
||
let key_vertices: Vec<[f32; 3]> = te
|
||
.key_vertices
|
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.into_iter()
|
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.map(|[x, y, z]| [(x - ox) as f32, (y - oy) as f32, (z - oz) as f32])
|
||
.collect();
|
||
return WireModel {
|
||
name,
|
||
points,
|
||
color,
|
||
selected,
|
||
pattern_length,
|
||
pattern,
|
||
line_weight_px,
|
||
snap_pts,
|
||
tangent_geoms: te.tangent_geoms,
|
||
aci: 0,
|
||
key_vertices,
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris: vec![],
|
||
};
|
||
}
|
||
}
|
||
|
||
TruckObject::Lines(points) => {
|
||
// Points are world-space f64 from entity converters (polyline,
|
||
// leader, mesh, solid2d, etc.). Subtract world_offset in f64
|
||
// before casting to f32 so drawings at large UTM-style
|
||
// coordinates keep sub-unit precision in the wire model.
|
||
let [ox, oy, oz] = world_offset;
|
||
let local_pts: Vec<[f32; 3]> = points
|
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.into_iter()
|
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.map(|[x, y, z]| {
|
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if x.is_nan() {
|
||
[f32::NAN, f32::NAN, f32::NAN]
|
||
} else {
|
||
[(x - ox) as f32, (y - oy) as f32, (z - oz) as f32]
|
||
}
|
||
})
|
||
.collect();
|
||
let snap_pts = offset_snap_pts(te.snap_pts, world_offset);
|
||
let key_vertices: Vec<[f32; 3]> = te
|
||
.key_vertices
|
||
.into_iter()
|
||
.map(|[x, y, z]| [(x - ox) as f32, (y - oy) as f32, (z - oz) as f32])
|
||
.collect();
|
||
let fill_tris: Vec<[f32; 3]> = te
|
||
.fill_tris
|
||
.into_iter()
|
||
.map(|[x, y, z]| [(x - ox) as f32, (y - oy) as f32, (z - oz) as f32])
|
||
.collect();
|
||
return WireModel {
|
||
name,
|
||
points: local_pts,
|
||
color,
|
||
selected,
|
||
pattern_length: 0.0,
|
||
pattern: [0.0; 8],
|
||
line_weight_px,
|
||
snap_pts,
|
||
tangent_geoms: te.tangent_geoms,
|
||
aci: 0,
|
||
key_vertices,
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris,
|
||
};
|
||
}
|
||
|
||
TruckObject::SegmentedLines(points) => {
|
||
let [ox, oy, oz] = world_offset;
|
||
let local_pts: Vec<[f32; 3]> = points
|
||
.into_iter()
|
||
.map(|[x, y, z]| {
|
||
if x.is_nan() {
|
||
[f32::NAN, f32::NAN, f32::NAN]
|
||
} else {
|
||
[(x - ox) as f32, (y - oy) as f32, (z - oz) as f32]
|
||
}
|
||
})
|
||
.collect();
|
||
let snap_pts = offset_snap_pts(te.snap_pts, world_offset);
|
||
let key_vertices: Vec<[f32; 3]> = te
|
||
.key_vertices
|
||
.into_iter()
|
||
.map(|[x, y, z]| [(x - ox) as f32, (y - oy) as f32, (z - oz) as f32])
|
||
.collect();
|
||
return WireModel {
|
||
name,
|
||
points: local_pts,
|
||
color,
|
||
selected,
|
||
pattern_length,
|
||
pattern,
|
||
line_weight_px,
|
||
snap_pts,
|
||
tangent_geoms: te.tangent_geoms,
|
||
aci: 0,
|
||
key_vertices,
|
||
plinegen: false,
|
||
vp_scissor: None,
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
fill_tris: vec![],
|
||
};
|
||
}
|
||
|
||
TruckObject::Volume(_) => {
|
||
// Solid3D / Region / Body → mesh tessellation lives in
|
||
// `solid3d_tess`. As a wire fallback, render the pre-computed
|
||
// edge wires stored in the entity when present (e.g. from
|
||
// SOLVIEW output or when the SAT kernel cannot parse the
|
||
// ACIS data).
|
||
let wire_pts = solid_wire_fallback(entity, world_offset);
|
||
let mut wm = WireModel::solid(name, wire_pts, color, selected);
|
||
// Add insertion snap at point_of_reference.
|
||
let [ox, oy, oz] = world_offset;
|
||
let por = match entity {
|
||
EntityType::Solid3D(s) => Some(&s.point_of_reference),
|
||
EntityType::Region(r) => Some(&r.point_of_reference),
|
||
EntityType::Body(b) => Some(&b.point_of_reference),
|
||
_ => None,
|
||
};
|
||
if let Some(p) = por {
|
||
let sp = Vec3::new((p.x - ox) as f32, (p.y - oy) as f32, (p.z - oz) as f32);
|
||
wm.snap_pts.push((sp, SnapHint::Insertion));
|
||
}
|
||
return wm;
|
||
}
|
||
}
|
||
}
|
||
|
||
// ── Legacy fallback for Viewport and other unhandled types ────────────
|
||
let (points, snap_pts, tangent_geoms, key_vertices) = legacy_geometry(entity, world_offset);
|
||
WireModel {
|
||
name,
|
||
points,
|
||
color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length,
|
||
pattern,
|
||
line_weight_px,
|
||
snap_pts,
|
||
tangent_geoms,
|
||
key_vertices,
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris: vec![],
|
||
}
|
||
}
|
||
|
||
pub fn tessellate_dimension(
|
||
document: &CadDocument,
|
||
handle: Handle,
|
||
dim: &Dimension,
|
||
selected: bool,
|
||
entity_color: [f32; 4],
|
||
line_weight_px: f32,
|
||
world_offset: [f64; 3],
|
||
anno_scale: f32,
|
||
) -> Vec<WireModel> {
|
||
let name = handle.value().to_string();
|
||
let style_name = &dim.base().style_name;
|
||
let style = document.dim_styles.iter().find(|s| {
|
||
s.name.eq_ignore_ascii_case(style_name)
|
||
|| (style_name.trim().is_empty() && s.name.eq_ignore_ascii_case("Standard"))
|
||
});
|
||
|
||
// DIMSCALE rule:
|
||
// dimstyle.dimscale > 0 → final multiplier; ignore anno_scale.
|
||
// dimstyle.dimscale == 0 → annotative: use anno_scale (= 1/vp_scale).
|
||
let dim_scale = style
|
||
.map(|s| {
|
||
if s.dimscale > 1e-6 {
|
||
s.dimscale
|
||
} else {
|
||
anno_scale as f64
|
||
}
|
||
})
|
||
.unwrap_or(1.0);
|
||
|
||
let (
|
||
dimasz_raw,
|
||
dimexo,
|
||
dimexe,
|
||
dim_txt,
|
||
dimtsz_raw,
|
||
dimsah,
|
||
dimse1,
|
||
dimse2,
|
||
dimsd1,
|
||
dimsd2,
|
||
dimdle,
|
||
dimfxl,
|
||
dimfxlon,
|
||
dimsoxd,
|
||
dimcen,
|
||
) = style
|
||
.map(|s| {
|
||
(
|
||
s.dimasz * dim_scale,
|
||
(s.dimexo * dim_scale) as f32,
|
||
(s.dimexe * dim_scale) as f32,
|
||
s.dimtxt * dim_scale,
|
||
s.dimtsz * dim_scale,
|
||
s.dimsah,
|
||
s.dimse1,
|
||
s.dimse2,
|
||
s.dimsd1,
|
||
s.dimsd2,
|
||
(s.dimdle * dim_scale) as f32,
|
||
(s.dimfxl * dim_scale) as f32,
|
||
s.dimfxlon,
|
||
s.dimsoxd,
|
||
(s.dimcen * dim_scale) as f32,
|
||
)
|
||
})
|
||
.unwrap_or((
|
||
0.18, 0.0, 0.0, 2.5, 0.0, false, false, false, false, false, 0.0, 1.0, false, false,
|
||
0.09,
|
||
));
|
||
|
||
// Arrow selection precedence:
|
||
// 1. DIMTSZ>0 → oblique tick (overrides DIMBLK*).
|
||
// 2. DIMSAH false → DIMBLK on both ends.
|
||
// 3. DIMSAH true → DIMBLK1 (first end), DIMBLK2 (second end).
|
||
// Unknown / NULL block handles fall back to ClosedFilled.
|
||
let dimasz = (dimasz_raw as f32).max(0.001);
|
||
let (arrow1, arrow2) = if dimtsz_raw > 1e-9 {
|
||
let t = ArrowKind::Tick {
|
||
size: (dimtsz_raw as f32).max(0.001),
|
||
};
|
||
(t, t)
|
||
} else if let Some(s) = style {
|
||
if dimsah {
|
||
(
|
||
arrow_from_block(document, s.dimblk1, dimasz),
|
||
arrow_from_block(document, s.dimblk2, dimasz),
|
||
)
|
||
} else {
|
||
let a = arrow_from_block(document, s.dimblk, dimasz);
|
||
(a, a)
|
||
}
|
||
} else {
|
||
let a = ArrowKind::Triangle {
|
||
size: dimasz,
|
||
filled: true,
|
||
size_mul: 1.0,
|
||
};
|
||
(a, a)
|
||
};
|
||
|
||
let mut geom = dimension_geometry(
|
||
dim,
|
||
&arrow1,
|
||
&arrow2,
|
||
DimLineParams {
|
||
dimexo,
|
||
dimexe,
|
||
dimdle,
|
||
dimfxl,
|
||
dimfxlon,
|
||
dimsoxd,
|
||
dimcen,
|
||
ticks: dimtsz_raw > 1e-9,
|
||
},
|
||
SuppressFlags {
|
||
ext1: dimse1,
|
||
ext2: dimse2,
|
||
dim1: dimsd1,
|
||
dim2: dimsd2,
|
||
},
|
||
world_offset,
|
||
);
|
||
|
||
// DIMTMOVE = 1: when the saved text_middle_point sits far from the
|
||
// dim-line anchor, draw a short leader connecting them. (=0 anchors text
|
||
// to the dim line — no leader; =2 frees text without a leader.)
|
||
if let Some(s) = style {
|
||
if s.dimtmove == 1 {
|
||
if let Some((anchor, txt)) = dimtmove_leader_endpoints(dim, world_offset) {
|
||
let gap = dim_txt as f32 * 0.5;
|
||
if (txt - anchor).length() > gap * 2.0 {
|
||
add_segment(&mut geom.dim_lines, anchor, txt);
|
||
}
|
||
}
|
||
}
|
||
// DIMTOFL / DIMTIX / DIMATFIT / DIMUPT control autofit behaviour at
|
||
// dim *creation*. At render time we honour the saved text and arrow
|
||
// positions, so reading them here is a no-op — they shape geometry
|
||
// upstream rather than here.
|
||
let _ = (s.dimtofl, s.dimtix, s.dimatfit, s.dimupt);
|
||
// DIMTXTDIRECTION (RTL) needs per-instance text mirroring on the Text
|
||
// entity, which the current text struct can't carry. Tracked: read
|
||
// and ignore so the file round-trips on save.
|
||
let _ = s.dimtxtdirection;
|
||
}
|
||
|
||
// Per-spec colours: DIMCLRD (dim/arrows), DIMCLRE (ext), DIMCLRT (text).
|
||
// 0=ByBlock and 256=ByLayer fall through to entity_color.
|
||
let dim_color = if selected {
|
||
WireModel::SELECTED
|
||
} else {
|
||
resolve_dim_color(style.map(|s| s.dimclrd).unwrap_or(0), entity_color)
|
||
};
|
||
let ext_color = if selected {
|
||
WireModel::SELECTED
|
||
} else {
|
||
resolve_dim_color(style.map(|s| s.dimclre).unwrap_or(0), entity_color)
|
||
};
|
||
let text_color = if selected {
|
||
entity_color // text wire color set by inner tessellate; keep entity tint
|
||
} else {
|
||
resolve_dim_color(style.map(|s| s.dimclrt).unwrap_or(0), entity_color)
|
||
};
|
||
|
||
let snap_pts = dimension_snap_pts(dim, world_offset);
|
||
let key_vertices: Vec<[f32; 3]> = geom
|
||
.dim_lines
|
||
.iter()
|
||
.chain(geom.ext_lines.iter())
|
||
.copied()
|
||
.filter(|p| !(p[0].is_nan() || p[1].is_nan() || p[2].is_nan()))
|
||
.collect();
|
||
|
||
// DIMLWD (dim line + arrows) and DIMLWE (extension lines). Negative
|
||
// codes fall through to the entity's own resolved weight.
|
||
let lw_dim = resolve_dim_lineweight_px(
|
||
style.map(|s| s.dimlwd).unwrap_or(-2),
|
||
line_weight_px,
|
||
);
|
||
let lw_ext = resolve_dim_lineweight_px(
|
||
style.map(|s| s.dimlwe).unwrap_or(-2),
|
||
line_weight_px,
|
||
);
|
||
|
||
// DIMLTEX (dim line) / DIMLTEX1 (ext1) / DIMLTEX2 (ext2) — linetype
|
||
// handles → pattern. Looked up in document.line_types by handle.
|
||
let lt_scale = document.header.linetype_scale as f32 * dim.base().common.linetype_scale as f32;
|
||
let (dim_pat_len, dim_pat) = style
|
||
.map(|s| resolve_pattern_by_handle(document, s.dimltex_handle, lt_scale))
|
||
.unwrap_or((0.0, [0.0; 8]));
|
||
let (ext1_pat_len, ext1_pat) = style
|
||
.map(|s| resolve_pattern_by_handle(document, s.dimltex1_handle, lt_scale))
|
||
.unwrap_or((0.0, [0.0; 8]));
|
||
let (ext2_pat_len, ext2_pat) = style
|
||
.map(|s| resolve_pattern_by_handle(document, s.dimltex2_handle, lt_scale))
|
||
.unwrap_or((0.0, [0.0; 8]));
|
||
|
||
let mut wires = Vec::new();
|
||
|
||
if !geom.ext_lines.is_empty() {
|
||
// If ext1 and ext2 have different linetypes, split into two wires so
|
||
// each can carry its own pattern. Otherwise emit as a single wire.
|
||
let split = ext1_pat_len != ext2_pat_len || ext1_pat != ext2_pat;
|
||
if split {
|
||
let (ext1, ext2) = split_ext_lines(&geom.ext_lines);
|
||
if !ext1.is_empty() {
|
||
wires.push(WireModel {
|
||
name: name.clone(),
|
||
points: ext1,
|
||
color: ext_color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length: ext1_pat_len,
|
||
pattern: ext1_pat,
|
||
line_weight_px: lw_ext,
|
||
snap_pts: vec![],
|
||
tangent_geoms: vec![],
|
||
key_vertices: vec![],
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris: vec![],
|
||
});
|
||
}
|
||
if !ext2.is_empty() {
|
||
wires.push(WireModel {
|
||
name: name.clone(),
|
||
points: ext2,
|
||
color: ext_color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length: ext2_pat_len,
|
||
pattern: ext2_pat,
|
||
line_weight_px: lw_ext,
|
||
snap_pts: vec![],
|
||
tangent_geoms: vec![],
|
||
key_vertices: vec![],
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris: vec![],
|
||
});
|
||
}
|
||
} else {
|
||
wires.push(WireModel {
|
||
name: name.clone(),
|
||
points: geom.ext_lines,
|
||
color: ext_color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length: ext1_pat_len,
|
||
pattern: ext1_pat,
|
||
line_weight_px: lw_ext,
|
||
snap_pts: vec![],
|
||
tangent_geoms: vec![],
|
||
key_vertices: vec![],
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris: vec![],
|
||
});
|
||
}
|
||
}
|
||
|
||
wires.push(WireModel {
|
||
name: name.clone(),
|
||
points: geom.dim_lines,
|
||
color: dim_color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length: dim_pat_len,
|
||
pattern: dim_pat,
|
||
line_weight_px: lw_dim,
|
||
snap_pts,
|
||
tangent_geoms: vec![],
|
||
key_vertices,
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris: geom.arrow_fill,
|
||
});
|
||
|
||
// DIMTFILL: 0=none, 1=drawing background (transparent → skip), 2=DIMTFILLCLR.
|
||
if let Some(s) = style {
|
||
if s.dimtfill == 2 {
|
||
if let Some(rect) = text_fill_rect(dim, style, dim_txt, world_offset) {
|
||
let fill_color = if selected {
|
||
WireModel::SELECTED
|
||
} else {
|
||
let c = AcadColor::from_index(s.dimtfillclr);
|
||
aci_to_rgba(&c)
|
||
};
|
||
wires.push(WireModel {
|
||
name: name.clone(),
|
||
points: vec![],
|
||
color: fill_color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length: 0.0,
|
||
pattern: [0.0; 8],
|
||
line_weight_px: 1.0,
|
||
snap_pts: vec![],
|
||
tangent_geoms: vec![],
|
||
key_vertices: vec![],
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris: rect,
|
||
});
|
||
}
|
||
}
|
||
}
|
||
|
||
if let Some(text) = dimension_text_entity(dim, dim_txt, style) {
|
||
let mut wire = tessellate(
|
||
document,
|
||
handle,
|
||
&EntityType::Text(text),
|
||
selected,
|
||
text_color,
|
||
0.0,
|
||
[0.0; 8],
|
||
line_weight_px,
|
||
world_offset,
|
||
// dim text already baked dim_scale into its height — don't
|
||
// let the inner tessellate re-apply anno_scale.
|
||
1.0,
|
||
);
|
||
wire.name = name;
|
||
wires.push(wire);
|
||
}
|
||
|
||
wires
|
||
}
|
||
|
||
fn resolve_dim_color(idx: i16, fallback: [f32; 4]) -> [f32; 4] {
|
||
// DIMCLR* convention: 0 = BYBLOCK, 256 = BYLAYER → entity colour wins.
|
||
if idx == 0 || idx == 256 {
|
||
return fallback;
|
||
}
|
||
aci_to_rgba(&AcadColor::from_index(idx))
|
||
}
|
||
|
||
/// Resolve a DIMLWD / DIMLWE table value (the i16 lineweight code) into a
|
||
/// pixel width. -1 (ByLayer) / -2 (ByBlock) / -3 (Default) fall through to
|
||
/// the entity's already-resolved width.
|
||
fn resolve_dim_lineweight_px(code: i16, fallback_px: f32) -> f32 {
|
||
const MM_TO_PX: f32 = 96.0 / 25.4;
|
||
if code < 0 {
|
||
return fallback_px;
|
||
}
|
||
// i16 value 0..=211 represents 1/100 mm.
|
||
let mm = code as f32 / 100.0;
|
||
(mm * MM_TO_PX).max(1.0)
|
||
}
|
||
|
||
/// Look up a linetype in the document's line_types table by handle and
|
||
/// resolve it to a (pattern_length, pattern) pair compatible with WireModel.
|
||
fn resolve_pattern_by_handle(
|
||
doc: &CadDocument,
|
||
handle: acadrust::types::Handle,
|
||
scale: f32,
|
||
) -> (f32, [f32; 8]) {
|
||
if handle.is_null() {
|
||
return (0.0, [0.0; 8]);
|
||
}
|
||
let name = doc
|
||
.line_types
|
||
.iter()
|
||
.find(|lt| lt.handle == handle)
|
||
.map(|lt| lt.name.clone());
|
||
match name {
|
||
Some(n) => crate::scene::render::resolve_pattern(&doc.line_types, &n, scale),
|
||
None => (0.0, [0.0; 8]),
|
||
}
|
||
}
|
||
|
||
/// Split the combined ext-lines point list (NaN-separated segment pairs)
|
||
/// into "first" / "second" halves. `append_linear_dimension` writes ext1
|
||
/// before ext2, so the first segment is ext1 and the second is ext2.
|
||
fn split_ext_lines(points: &[[f32; 3]]) -> (Vec<[f32; 3]>, Vec<[f32; 3]>) {
|
||
let mut groups: Vec<Vec<[f32; 3]>> = Vec::new();
|
||
let mut current: Vec<[f32; 3]> = Vec::new();
|
||
for &p in points {
|
||
if p[0].is_nan() {
|
||
if !current.is_empty() {
|
||
groups.push(std::mem::take(&mut current));
|
||
}
|
||
} else {
|
||
current.push(p);
|
||
}
|
||
}
|
||
if !current.is_empty() {
|
||
groups.push(current);
|
||
}
|
||
let mut iter = groups.into_iter();
|
||
let first = iter.next().unwrap_or_default();
|
||
let rest: Vec<[f32; 3]> = iter.flatten().collect();
|
||
(first, rest)
|
||
}
|
||
|
||
/// Endpoints for the DIMTMOVE=1 leader: (anchor on the dim line, saved
|
||
/// text_middle_point). Returns None when the dim has no saved text position
|
||
/// or has no well-defined dim-line midpoint (radius/diameter handled by
|
||
/// their own leg).
|
||
fn dimtmove_leader_endpoints(
|
||
dim: &Dimension,
|
||
world_offset: [f64; 3],
|
||
) -> Option<(Vec3, Vec3)> {
|
||
let base = dim.base();
|
||
let txt = base.text_middle_point;
|
||
if txt.x * txt.x + txt.y * txt.y + txt.z * txt.z <= 1e-16 {
|
||
return None;
|
||
}
|
||
let lv = |v| vec3_local(v, world_offset);
|
||
let anchor = match dim {
|
||
Dimension::Linear(d) => {
|
||
let perp = Vec3::new(-(d.rotation.sin() as f32), d.rotation.cos() as f32, 0.0);
|
||
let first = lv(d.first_point);
|
||
let second = lv(d.second_point);
|
||
let def = lv(d.definition_point);
|
||
let off1 = def.dot(perp) - first.dot(perp);
|
||
let off2 = def.dot(perp) - second.dot(perp);
|
||
(first + perp * off1 + second + perp * off2) * 0.5
|
||
}
|
||
Dimension::Aligned(d) => {
|
||
let first = lv(d.first_point);
|
||
let second = lv(d.second_point);
|
||
let axis = normalized_or(second - first, Vec3::X);
|
||
let perp = Vec3::new(-axis.y, axis.x, 0.0);
|
||
let def = lv(d.definition_point);
|
||
let off1 = def.dot(perp) - first.dot(perp);
|
||
let off2 = def.dot(perp) - second.dot(perp);
|
||
(first + perp * off1 + second + perp * off2) * 0.5
|
||
}
|
||
Dimension::Radius(d) => lv(d.definition_point),
|
||
Dimension::Diameter(d) => (lv(d.angle_vertex) + lv(d.definition_point)) * 0.5,
|
||
_ => return None,
|
||
};
|
||
Some((anchor, lv(txt)))
|
||
}
|
||
|
||
/// Build a rectangle of filled triangles sitting under the dim text, used
|
||
/// when DIMTFILL = 2 (explicit fill colour). The rect width is estimated
|
||
/// from the formatted text length × character-cell width; an absolutely
|
||
/// correct box would need full text metrics from the font cache.
|
||
fn text_fill_rect(
|
||
dim: &Dimension,
|
||
style: Option<&DimStyle>,
|
||
text_height: f64,
|
||
world_offset: [f64; 3],
|
||
) -> Option<Vec<[f32; 3]>> {
|
||
let value = dimension_text_value(dim, style)?;
|
||
if value.is_empty() {
|
||
return None;
|
||
}
|
||
let pos = dimension_text_pos_f64(dim, style, text_height);
|
||
let dimgap = style.map(|s| s.dimgap).unwrap_or(0.0).max(0.0);
|
||
// ~0.6 × text_height per character; matches average glyph aspect for
|
||
// the bundled stick fonts. Inflate by 1 DIMGAP on each side.
|
||
let approx_w =
|
||
value.chars().count() as f64 * text_height * 0.6 + dimgap * 2.0;
|
||
let approx_h = text_height + dimgap * 2.0;
|
||
let rot = if dim.base().text_rotation.abs() > 1e-9 {
|
||
dim.base().text_rotation
|
||
} else {
|
||
dimension_text_natural_rotation(dim)
|
||
};
|
||
let (sr, cr) = rot.sin_cos();
|
||
let hx = approx_w * 0.5;
|
||
let hy = approx_h * 0.5;
|
||
let [ox, oy, oz] = world_offset;
|
||
let cx = (pos.x - ox) as f32;
|
||
let cy = (pos.y - oy) as f32;
|
||
let cz = (pos.z - oz) as f32;
|
||
let corner = |dx: f64, dy: f64| -> [f32; 3] {
|
||
let lx = dx * cr - dy * sr;
|
||
let ly = dx * sr + dy * cr;
|
||
[cx + lx as f32, cy + ly as f32, cz]
|
||
};
|
||
let p1 = corner(-hx, -hy);
|
||
let p2 = corner(hx, -hy);
|
||
let p3 = corner(hx, hy);
|
||
let p4 = corner(-hx, hy);
|
||
Some(vec![p1, p2, p3, p1, p3, p4])
|
||
}
|
||
|
||
#[derive(Clone, Copy)]
|
||
enum ArrowKind {
|
||
None,
|
||
Triangle { size: f32, filled: bool, size_mul: f32 },
|
||
Tick { size: f32 },
|
||
Open { size: f32, half_angle: f32 },
|
||
Dot { size: f32, filled: bool },
|
||
Origin { size: f32 },
|
||
Box_ { size: f32, filled: bool },
|
||
Datum { size: f32, filled: bool },
|
||
}
|
||
|
||
fn arrow_from_block(
|
||
doc: &CadDocument,
|
||
handle: acadrust::types::Handle,
|
||
dimasz: f32,
|
||
) -> ArrowKind {
|
||
let name = if handle.is_null() {
|
||
None
|
||
} else {
|
||
doc.block_records
|
||
.iter()
|
||
.find(|b| b.handle == handle)
|
||
.map(|b| b.name.as_str())
|
||
};
|
||
arrow_from_block_name(name, dimasz)
|
||
}
|
||
|
||
fn arrow_from_block_name(name: Option<&str>, dimasz: f32) -> ArrowKind {
|
||
// AutoCAD's standard arrow blocks are prefixed with "_" (e.g. "_OPEN").
|
||
// Strip the prefix, upper-case, and switch on canonical names. Unknown
|
||
// / missing names default to ClosedFilled.
|
||
let n = name
|
||
.map(|s| s.trim().trim_start_matches('_').to_ascii_uppercase())
|
||
.unwrap_or_default();
|
||
match n.as_str() {
|
||
"" | "CLOSEDFILLED" => ArrowKind::Triangle {
|
||
size: dimasz,
|
||
filled: true,
|
||
size_mul: 1.0,
|
||
},
|
||
"CLOSED" | "CLOSEDBLANK" => ArrowKind::Triangle {
|
||
size: dimasz,
|
||
filled: false,
|
||
size_mul: 1.0,
|
||
},
|
||
"SMALL" => ArrowKind::Triangle {
|
||
size: dimasz,
|
||
filled: true,
|
||
size_mul: 0.5,
|
||
},
|
||
"OPEN" => ArrowKind::Open {
|
||
size: dimasz,
|
||
half_angle: 9.5_f32.to_radians(),
|
||
},
|
||
"OPEN30" => ArrowKind::Open {
|
||
size: dimasz,
|
||
half_angle: 15.0_f32.to_radians(),
|
||
},
|
||
"OPEN90" => ArrowKind::Open {
|
||
size: dimasz,
|
||
half_angle: 45.0_f32.to_radians(),
|
||
},
|
||
"DOT" => ArrowKind::Dot {
|
||
size: dimasz,
|
||
filled: true,
|
||
},
|
||
"DOTSMALL" => ArrowKind::Dot {
|
||
size: dimasz * 0.5,
|
||
filled: true,
|
||
},
|
||
"DOTBLANK" => ArrowKind::Dot {
|
||
size: dimasz,
|
||
filled: false,
|
||
},
|
||
"DOTSMALLBLANK" => ArrowKind::Dot {
|
||
size: dimasz * 0.5,
|
||
filled: false,
|
||
},
|
||
"ORIGIN" | "ORIGIN2" | "ORIGININDICATOR" | "ORIGININDICATOR2" => {
|
||
ArrowKind::Origin { size: dimasz }
|
||
}
|
||
"OBLIQUE" | "ARCHTICK" => ArrowKind::Tick { size: dimasz },
|
||
"BOXFILLED" => ArrowKind::Box_ {
|
||
size: dimasz,
|
||
filled: true,
|
||
},
|
||
"BOXBLANK" | "BOX" => ArrowKind::Box_ {
|
||
size: dimasz,
|
||
filled: false,
|
||
},
|
||
"DATUMFILLED" | "DATUMTRIANGLEFILLED" => ArrowKind::Datum {
|
||
size: dimasz,
|
||
filled: true,
|
||
},
|
||
"DATUMBLANK" | "DATUMTRIANGLE" => ArrowKind::Datum {
|
||
size: dimasz,
|
||
filled: false,
|
||
},
|
||
"NONE" => ArrowKind::None,
|
||
// INTEGRAL and other complex glyphs aren't reproduced here; fall through.
|
||
_ => ArrowKind::Triangle {
|
||
size: dimasz,
|
||
filled: true,
|
||
size_mul: 1.0,
|
||
},
|
||
}
|
||
}
|
||
|
||
#[derive(Clone, Copy, Default)]
|
||
struct SuppressFlags {
|
||
ext1: bool,
|
||
ext2: bool,
|
||
dim1: bool,
|
||
dim2: bool,
|
||
}
|
||
|
||
#[derive(Clone, Copy)]
|
||
struct DimLineParams {
|
||
dimexo: f32,
|
||
dimexe: f32,
|
||
dimdle: f32,
|
||
dimfxl: f32,
|
||
dimfxlon: bool,
|
||
dimsoxd: bool,
|
||
dimcen: f32,
|
||
ticks: bool,
|
||
}
|
||
|
||
struct DimGeom {
|
||
ext_lines: Vec<[f32; 3]>,
|
||
dim_lines: Vec<[f32; 3]>,
|
||
arrow_fill: Vec<[f32; 3]>,
|
||
}
|
||
|
||
impl DimGeom {
|
||
fn new() -> Self {
|
||
Self {
|
||
ext_lines: Vec::new(),
|
||
dim_lines: Vec::new(),
|
||
arrow_fill: Vec::new(),
|
||
}
|
||
}
|
||
}
|
||
|
||
fn tessellate_leader_single(
|
||
document: &CadDocument,
|
||
handle: Handle,
|
||
leader: &Leader,
|
||
selected: bool,
|
||
entity_color: [f32; 4],
|
||
line_weight_px: f32,
|
||
world_offset: [f64; 3],
|
||
anno_scale: f32,
|
||
) -> WireModel {
|
||
let color = if selected {
|
||
WireModel::SELECTED
|
||
} else {
|
||
entity_color
|
||
};
|
||
let name = handle.value().to_string();
|
||
let [ox, oy, oz] = world_offset;
|
||
let p3 =
|
||
|v: &Vector3| -> [f32; 3] { [(v.x - ox) as f32, (v.y - oy) as f32, (v.z - oz) as f32] };
|
||
let nan = [f32::NAN; 3];
|
||
|
||
let verts = &leader.vertices;
|
||
|
||
if verts.len() < 2 {
|
||
return WireModel {
|
||
name,
|
||
points: vec![],
|
||
color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length: 0.0,
|
||
pattern: [0.0; 8],
|
||
line_weight_px,
|
||
snap_pts: vec![],
|
||
tangent_geoms: vec![],
|
||
key_vertices: vec![],
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris: vec![],
|
||
};
|
||
}
|
||
|
||
let mut points: Vec<[f32; 3]> = verts.iter().map(|v| p3(v)).collect();
|
||
let mut tangents: Vec<TangentGeom> = Vec::new();
|
||
let key_vertices: Vec<[f32; 3]> = verts.iter().map(|v| p3(v)).collect();
|
||
let mut fill_tris: Vec<[f32; 3]> = Vec::new();
|
||
|
||
for i in 0..verts.len().saturating_sub(1) {
|
||
tangents.push(TangentGeom::Line {
|
||
p1: p3(&verts[i]),
|
||
p2: p3(&verts[i + 1]),
|
||
});
|
||
}
|
||
|
||
if leader.arrow_enabled {
|
||
// Resolve the active dim style → DIMLDRBLK to pick the arrow shape.
|
||
// DIMASZ × DIMSCALE drives the size when available; otherwise fall
|
||
// back to the legacy text-height heuristic.
|
||
let style = document.dim_styles.iter().find(|s| {
|
||
s.name.eq_ignore_ascii_case(&leader.dimension_style)
|
||
|| (leader.dimension_style.trim().is_empty()
|
||
&& s.name.eq_ignore_ascii_case("Standard"))
|
||
});
|
||
let dim_scale = style
|
||
.map(|s| {
|
||
if s.dimscale > 1e-6 {
|
||
s.dimscale
|
||
} else {
|
||
anno_scale as f64
|
||
}
|
||
})
|
||
.unwrap_or(anno_scale as f64);
|
||
let arrow_size = match style {
|
||
Some(s) => (s.dimasz * dim_scale) as f32,
|
||
None => (leader.text_height as f32).max(1.0) * 0.8 * anno_scale,
|
||
};
|
||
let arrow = match style {
|
||
Some(s) => arrow_from_block(document, s.dimldrblk, arrow_size.max(0.001)),
|
||
None => ArrowKind::Triangle {
|
||
size: arrow_size.max(0.001),
|
||
filled: true,
|
||
size_mul: 1.0,
|
||
},
|
||
};
|
||
|
||
let tip = &verts[0];
|
||
let next = &verts[1];
|
||
let dx = (next.x - tip.x) as f32;
|
||
let dy = (next.y - tip.y) as f32;
|
||
let len = (dx * dx + dy * dy).sqrt().max(1e-9);
|
||
let dir = Vec3::new(dx / len, dy / len, 0.0);
|
||
let tip_f = p3(tip);
|
||
let tip_v = Vec3::new(tip_f[0], tip_f[1], tip_f[2]);
|
||
// Reuse the dim arrow emitter so the leader shape matches the
|
||
// DIMSTYLE in use (Closed Filled by default, Dot, Tick, …).
|
||
let mut arrow_pts: Vec<[f32; 3]> = Vec::new();
|
||
let mut arrow_geom = DimGeom::new();
|
||
append_arrow(&mut arrow_geom, tip_v, dir, &arrow);
|
||
if !arrow_geom.dim_lines.is_empty() {
|
||
arrow_pts.push(nan);
|
||
arrow_pts.extend(arrow_geom.dim_lines);
|
||
}
|
||
points.extend(arrow_pts);
|
||
fill_tris.extend(arrow_geom.arrow_fill);
|
||
}
|
||
|
||
if leader.hookline_enabled {
|
||
let last = verts.last().unwrap();
|
||
let prev = &verts[verts.len() - 2];
|
||
let sign = if (last.x - prev.x) >= 0.0 {
|
||
1.0_f32
|
||
} else {
|
||
-1.0_f32
|
||
};
|
||
let land_len = leader.text_height as f32 * 1.5 * anno_scale;
|
||
let last_f = p3(last);
|
||
points.push(nan);
|
||
points.push(last_f);
|
||
points.push([last_f[0] + sign * land_len, last_f[1], last_f[2]]);
|
||
}
|
||
|
||
WireModel {
|
||
name,
|
||
points,
|
||
color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length: 0.0,
|
||
pattern: [0.0; 8],
|
||
line_weight_px,
|
||
snap_pts: vec![],
|
||
tangent_geoms: tangents,
|
||
key_vertices,
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris,
|
||
}
|
||
}
|
||
|
||
/// Convert an acadrust `Color` to RGBA, falling back to `inherited` for
|
||
/// `ByLayer` / `ByBlock` (assumes those are already resolved upstream).
|
||
fn color_or_inherit(c: &AcadColor, inherited: [f32; 4]) -> [f32; 4] {
|
||
match c.rgb() {
|
||
Some((r, g, b)) => [
|
||
r as f32 / 255.0,
|
||
g as f32 / 255.0,
|
||
b as f32 / 255.0,
|
||
inherited[3],
|
||
],
|
||
None => inherited,
|
||
}
|
||
}
|
||
|
||
pub fn tessellate_multileader(
|
||
document: &CadDocument,
|
||
handle: Handle,
|
||
ml: &MultiLeader,
|
||
selected: bool,
|
||
entity_color: [f32; 4],
|
||
line_weight_px: f32,
|
||
world_offset: [f64; 3],
|
||
anno_scale: f32,
|
||
world_per_pixel: Option<f32>,
|
||
) -> Vec<WireModel> {
|
||
let line_color = if selected {
|
||
WireModel::SELECTED
|
||
} else {
|
||
entity_color
|
||
};
|
||
let name = handle.value().to_string();
|
||
let nan = [f32::NAN; 3];
|
||
let [ox, oy, oz] = world_offset;
|
||
let p3 = |v: &acadrust::types::Vector3| -> [f32; 3] {
|
||
[(v.x - ox) as f32, (v.y - oy) as f32, (v.z - oz) as f32]
|
||
};
|
||
|
||
// ── Scaling ──────────────────────────────────────────────────────────────
|
||
// ml.scale_factor is always applied; anno_scale is only applied when the
|
||
// multileader is marked annotative.
|
||
let effective_scale = (ml.scale_factor as f32)
|
||
* if ml.enable_annotation_scale {
|
||
anno_scale
|
||
} else {
|
||
1.0
|
||
};
|
||
|
||
let arrow_size = ml.arrowhead_size as f32 * effective_scale;
|
||
let draw_arrow = arrow_size > 0.0;
|
||
let invisible = ml.path_type == MultiLeaderPathType::Invisible;
|
||
|
||
// ── Leader / arrow / dogleg points ───────────────────────────────────────
|
||
let mut points: Vec<[f32; 3]> = Vec::new();
|
||
let mut key_verts: Vec<[f32; 3]> = Vec::new();
|
||
let mut snap_pts: Vec<(Vec3, SnapHint)> = Vec::new();
|
||
let mut tangents: Vec<TangentGeom> = Vec::new();
|
||
let mut first = true;
|
||
|
||
for root in &ml.context.leader_roots {
|
||
let cp = &root.connection_point;
|
||
let cp_f = p3(cp);
|
||
snap_pts.push((Vec3::from(cp_f), SnapHint::Node));
|
||
|
||
for line in &root.lines {
|
||
if line.points.is_empty() {
|
||
continue;
|
||
}
|
||
|
||
if !invisible {
|
||
if !first {
|
||
points.push(nan);
|
||
}
|
||
first = false;
|
||
|
||
let mut ctrl: Vec<[f32; 3]> = line.points.iter().map(|p| p3(p)).collect();
|
||
let last_f = *ctrl.last().unwrap_or(&cp_f);
|
||
let dist = ((last_f[0] - cp_f[0]).powi(2) + (last_f[1] - cp_f[1]).powi(2)).sqrt();
|
||
if dist > 1e-9 {
|
||
ctrl.push(cp_f);
|
||
}
|
||
for &c in &ctrl {
|
||
key_verts.push(c);
|
||
snap_pts.push((Vec3::from(c), SnapHint::Node));
|
||
}
|
||
|
||
if ml.path_type == MultiLeaderPathType::Spline && ctrl.len() >= 2 {
|
||
let ctrl_f64: Vec<[f64; 3]> = ctrl
|
||
.iter()
|
||
.map(|c| [c[0] as f64, c[1] as f64, c[2] as f64])
|
||
.collect();
|
||
for pt in catmull_rom_pts(&ctrl_f64, 8) {
|
||
points.push([pt[0] as f32, pt[1] as f32, pt[2] as f32]);
|
||
}
|
||
} else {
|
||
for &c in &ctrl {
|
||
points.push(c);
|
||
}
|
||
}
|
||
for i in 0..ctrl.len().saturating_sub(1) {
|
||
tangents.push(TangentGeom::Line {
|
||
p1: ctrl[i],
|
||
p2: ctrl[i + 1],
|
||
});
|
||
}
|
||
}
|
||
|
||
if draw_arrow {
|
||
let tip = &line.points[0];
|
||
let tip_f = p3(tip);
|
||
let next = if line.points.len() >= 2 {
|
||
line.points[1]
|
||
} else {
|
||
*cp
|
||
};
|
||
let dx = (next.x - tip.x) as f32;
|
||
let dy = (next.y - tip.y) as f32;
|
||
let dl = (dx * dx + dy * dy).sqrt().max(1e-9);
|
||
let (dx, dy) = (dx / dl, dy / dl);
|
||
let a = std::f32::consts::PI / 6.0;
|
||
let (s, c) = a.sin_cos();
|
||
points.push(nan);
|
||
points.push([
|
||
tip_f[0] + (dx * c - dy * s) * arrow_size,
|
||
tip_f[1] + (dx * s + dy * c) * arrow_size,
|
||
tip_f[2],
|
||
]);
|
||
points.push(tip_f);
|
||
points.push([
|
||
tip_f[0] + (dx * c + dy * s) * arrow_size,
|
||
tip_f[1] + (-dx * s + dy * c) * arrow_size,
|
||
tip_f[2],
|
||
]);
|
||
}
|
||
}
|
||
|
||
if ml.enable_landing && ml.enable_dogleg && ml.dogleg_length > 0.0 {
|
||
let dir = &root.direction;
|
||
let dl = (dir.x * dir.x + dir.y * dir.y).sqrt().max(1e-9);
|
||
let d = ml.dogleg_length * effective_scale as f64;
|
||
points.push(nan);
|
||
points.push(cp_f);
|
||
points.push([
|
||
(cp.x + dir.x / dl * d - ox) as f32,
|
||
(cp.y + dir.y / dl * d - oy) as f32,
|
||
cp_f[2],
|
||
]);
|
||
}
|
||
}
|
||
|
||
// The leader/arrow/dogleg wire goes out as a single WireModel. Text, frame,
|
||
// and background fill (each with their own color) are appended as separate
|
||
// WireModels so the renderer respects per-piece coloring.
|
||
let mut wires: Vec<WireModel> = Vec::new();
|
||
wires.push(WireModel {
|
||
name: name.clone(),
|
||
points,
|
||
color: line_color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length: 0.0,
|
||
pattern: [0.0; 8],
|
||
line_weight_px,
|
||
snap_pts,
|
||
tangent_geoms: tangents,
|
||
key_vertices: key_verts,
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris: vec![],
|
||
});
|
||
|
||
// ── Text strokes / frame / background fill ──────────────────────────────
|
||
// Strip inline format codes, split / word-wrap into lines, then place each
|
||
// line according to text_attachment_point (horizontal) and
|
||
// text_left_attachment (vertical), with text_rotation/text_direction applied.
|
||
if ml.content_type == LeaderContentType::MText && !ml.context.text_string.is_empty() {
|
||
let ctx = &ml.context;
|
||
let raw_height = if ctx.text_height > 0.0 {
|
||
ctx.text_height
|
||
} else {
|
||
ml.text_height
|
||
} as f32;
|
||
let height = raw_height * effective_scale;
|
||
|
||
let ins = &ctx.text_location;
|
||
// Subtract world_offset in f64 before casting to f32: drawings often
|
||
// sit at large absolute coordinates and casting first then subtracting
|
||
// throws away the precision needed for the rotated sub-glyph offsets.
|
||
let local_ins_x = (ins.x - ox) as f32;
|
||
let local_ins_y = (ins.y - oy) as f32;
|
||
let z = (ins.z - oz) as f32;
|
||
|
||
// Rotation: prefer text_direction (transforms survive rotations / mirrors
|
||
// when acadrust updates it) and fall back to text_rotation.
|
||
let td = ctx.text_direction;
|
||
let rot = if td.x.abs() > 1e-9 || td.y.abs() > 1e-9 {
|
||
(td.y as f32).atan2(td.x as f32)
|
||
} else {
|
||
ctx.text_rotation as f32
|
||
};
|
||
let (cos_r, sin_r) = (rot.cos(), rot.sin());
|
||
|
||
// Resolve text style via handle when available, falling back to STANDARD.
|
||
let style_name = ctx
|
||
.text_style_handle
|
||
.as_ref()
|
||
.and_then(|h| {
|
||
document
|
||
.text_styles
|
||
.iter()
|
||
.find(|s| s.handle == *h)
|
||
.map(|s| s.name.clone())
|
||
})
|
||
.unwrap_or_else(|| "STANDARD".to_string());
|
||
let style = crate::entities::text_support::resolve_text_style(&style_name, document);
|
||
let font_name = style.font_name;
|
||
let font = crate::scene::cxf::get_font(&font_name);
|
||
let width_factor = style.width_factor.max(0.01);
|
||
let oblique = style.oblique_angle;
|
||
|
||
// Strip MText format codes (e.g. `{\fArial Black|b0|i0|c162|p34;...}`),
|
||
// then split on \P / \n / \N and optionally word-wrap to text_width.
|
||
let plain = crate::entities::text_support::strip_mtext_codes(&ctx.text_string);
|
||
let explicit_lines = crate::entities::text_support::split_mtext_lines(&plain);
|
||
let lines: Vec<String> = if ctx.text_width > 0.0 {
|
||
let scale = height / 9.0 * width_factor;
|
||
let max_w = ctx.text_width as f32 * effective_scale;
|
||
explicit_lines
|
||
.iter()
|
||
.flat_map(|line| {
|
||
crate::entities::text_support::word_wrap(line, max_w, scale, font)
|
||
})
|
||
.collect()
|
||
} else {
|
||
explicit_lines
|
||
};
|
||
|
||
let ls_factor = if ctx.line_spacing_factor > 0.0 {
|
||
ctx.line_spacing_factor as f32
|
||
} else {
|
||
1.0
|
||
};
|
||
let line_h = height * ls_factor * (5.0 / 3.0) * font.line_spacing;
|
||
let n_lines = lines.len().max(1) as f32;
|
||
|
||
let h_anchor = match ctx.text_attachment_point {
|
||
TextAttachmentPointType::Left => 0.0_f32,
|
||
TextAttachmentPointType::Center => 0.5,
|
||
TextAttachmentPointType::Right => 1.0,
|
||
};
|
||
// Vertical anchor: use text_left_attachment (matches the leader-to-text
|
||
// attachment convention for the common case of left-side leaders).
|
||
let v_offset =
|
||
v_offset_for_attachment(ctx.text_left_attachment, n_lines, height, line_h);
|
||
|
||
let scale = height / 9.0 * width_factor;
|
||
let line_widths: Vec<f32> = lines
|
||
.iter()
|
||
.map(|line| crate::entities::text_support::measure_mtext_chars(line, scale, font))
|
||
.collect();
|
||
let max_line_w = line_widths.iter().cloned().fold(0.0_f32, f32::max);
|
||
|
||
// Resolve text color (falls back to entity color for ByLayer / ByBlock).
|
||
let text_color = if selected {
|
||
line_color
|
||
} else {
|
||
color_or_inherit(&ctx.text_color, entity_color)
|
||
};
|
||
|
||
// Same LOD ladder used for top-level Text / MText (see scene/mod.rs):
|
||
// h_px < 1 → baseline line (skip glyphs)
|
||
// 1 ≤ h < 5 → greeked rect in text color (skip glyphs)
|
||
// h_px ≥ 5 → full per-glyph stroke tessellation
|
||
let lod_h_px = world_per_pixel.map(|wpp| height / wpp);
|
||
let lod_mode = match lod_h_px {
|
||
Some(h) if h < 1.0 => 0,
|
||
Some(h) if h < 5.0 => 1,
|
||
_ => 2,
|
||
};
|
||
|
||
// Helper: map a (local_x, local_y) in the text's pre-rotation frame
|
||
// (origin at the insertion point) into WCS render space.
|
||
let to_wcs = |lx: f32, ly: f32| -> [f32; 3] {
|
||
[
|
||
local_ins_x + lx * cos_r - ly * sin_r,
|
||
local_ins_y + lx * sin_r + ly * cos_r,
|
||
z,
|
||
]
|
||
};
|
||
|
||
if lod_mode == 0 {
|
||
// Baseline of the top line only.
|
||
let line_w = line_widths.first().copied().unwrap_or(0.0);
|
||
let len_px = world_per_pixel
|
||
.map(|wpp| line_w / wpp)
|
||
.unwrap_or(f32::INFINITY);
|
||
if len_px >= 2.0 {
|
||
let line_y_local = v_offset;
|
||
let p0 = to_wcs(-line_w * h_anchor, line_y_local);
|
||
let p1 = to_wcs(line_w * (1.0 - h_anchor), line_y_local);
|
||
wires.push(WireModel {
|
||
name: name.clone(),
|
||
points: vec![p0, p1],
|
||
color: text_color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length: 0.0,
|
||
pattern: [0.0; 8],
|
||
line_weight_px,
|
||
snap_pts: vec![(
|
||
Vec3::new(local_ins_x, local_ins_y, z),
|
||
SnapHint::Node,
|
||
)],
|
||
tangent_geoms: vec![],
|
||
key_vertices: vec![],
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris: vec![],
|
||
});
|
||
}
|
||
} else if lod_mode == 1 {
|
||
// One filled rect per line — keeps the visual "text lives here
|
||
// per row" hint that multi-line MText carries, in the text's
|
||
// own color. Empty `points` opts out of the face3d 0.45 dim so
|
||
// the fill renders at full intensity.
|
||
let mut greek_tris: Vec<[f32; 3]> = Vec::with_capacity(lines.len() * 6);
|
||
for (i, _) in lines.iter().enumerate() {
|
||
let li = i as f32;
|
||
let line_y_bottom = -li * line_h + v_offset;
|
||
let line_y_top = line_y_bottom + height;
|
||
let line_w = line_widths[i];
|
||
if line_w <= 0.0 {
|
||
continue;
|
||
}
|
||
let left = -line_w * h_anchor;
|
||
let right = line_w * (1.0 - h_anchor);
|
||
let bl = to_wcs(left, line_y_bottom);
|
||
let br = to_wcs(right, line_y_bottom);
|
||
let tr = to_wcs(right, line_y_top);
|
||
let tl = to_wcs(left, line_y_top);
|
||
greek_tris.extend_from_slice(&[bl, br, tr, bl, tr, tl]);
|
||
}
|
||
if !greek_tris.is_empty() {
|
||
wires.push(WireModel {
|
||
name: name.clone(),
|
||
points: vec![],
|
||
color: text_color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length: 0.0,
|
||
pattern: [0.0; 8],
|
||
line_weight_px: 1.0,
|
||
snap_pts: vec![(
|
||
Vec3::new(local_ins_x, local_ins_y, z),
|
||
SnapHint::Node,
|
||
)],
|
||
tangent_geoms: vec![],
|
||
key_vertices: vec![],
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris: greek_tris,
|
||
});
|
||
}
|
||
} else {
|
||
// Build per-line stroke points in WCS.
|
||
let mut text_points: Vec<[f32; 3]> = Vec::new();
|
||
for (i, line) in lines.iter().enumerate() {
|
||
let li = i as f32;
|
||
let line_y_local = -li * line_h + v_offset;
|
||
let line_w = line_widths[i];
|
||
let h_shift_local = -line_w * h_anchor;
|
||
let wcs_dx = h_shift_local * cos_r - line_y_local * sin_r;
|
||
let wcs_dy = h_shift_local * sin_r + line_y_local * cos_r;
|
||
// Origin already in offset-relative space — tessellator will rotate
|
||
// glyph offsets around it and produce points directly in render space.
|
||
let origin = [local_ins_x + wcs_dx, local_ins_y + wcs_dy];
|
||
let strokes = crate::scene::cxf::tessellate_text_ex(
|
||
origin,
|
||
height,
|
||
rot,
|
||
width_factor,
|
||
oblique,
|
||
&font_name,
|
||
line,
|
||
);
|
||
for stroke in &strokes {
|
||
if stroke.len() < 2 {
|
||
continue;
|
||
}
|
||
text_points.push(nan);
|
||
for &[x, y] in stroke {
|
||
text_points.push([x, y, z]);
|
||
}
|
||
}
|
||
}
|
||
|
||
if !text_points.is_empty() {
|
||
wires.push(WireModel {
|
||
name: name.clone(),
|
||
points: text_points,
|
||
color: text_color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length: 0.0,
|
||
pattern: [0.0; 8],
|
||
line_weight_px,
|
||
snap_pts: vec![(
|
||
Vec3::new(local_ins_x, local_ins_y, z),
|
||
SnapHint::Node,
|
||
)],
|
||
tangent_geoms: vec![],
|
||
key_vertices: vec![],
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris: vec![],
|
||
});
|
||
}
|
||
}
|
||
|
||
// Text frame / background-fill rectangle in local frame, then rotated to WCS.
|
||
if ml.text_frame || ctx.background_fill_enabled {
|
||
// Visual gap so the frame/fill doesn't touch glyph caps.
|
||
let pad = height * 0.25;
|
||
let block_top = v_offset + height + pad;
|
||
let block_bottom = v_offset - (n_lines - 1.0) * line_h - pad;
|
||
let block_left = -max_line_w * h_anchor - pad;
|
||
let block_right = max_line_w * (1.0 - h_anchor) + pad;
|
||
let local_corners: [[f32; 2]; 4] = [
|
||
[block_left, block_bottom],
|
||
[block_right, block_bottom],
|
||
[block_right, block_top],
|
||
[block_left, block_top],
|
||
];
|
||
let wcs_corners: [[f32; 3]; 4] = std::array::from_fn(|i| {
|
||
let lx = local_corners[i][0];
|
||
let ly = local_corners[i][1];
|
||
let wx = local_ins_x + lx * cos_r - ly * sin_r;
|
||
let wy = local_ins_y + lx * sin_r + ly * cos_r;
|
||
[wx, wy, z]
|
||
});
|
||
|
||
// Background fill — emit two triangles; renders under the text strokes.
|
||
if ctx.background_fill_enabled {
|
||
let fill_color = if selected {
|
||
line_color
|
||
} else {
|
||
color_or_inherit(&ctx.background_fill_color, entity_color)
|
||
};
|
||
let fill_tris: Vec<[f32; 3]> = vec![
|
||
wcs_corners[0],
|
||
wcs_corners[1],
|
||
wcs_corners[2],
|
||
wcs_corners[0],
|
||
wcs_corners[2],
|
||
wcs_corners[3],
|
||
];
|
||
wires.push(WireModel {
|
||
name: name.clone(),
|
||
points: vec![],
|
||
color: fill_color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length: 0.0,
|
||
pattern: [0.0; 8],
|
||
line_weight_px: 1.0,
|
||
snap_pts: vec![],
|
||
tangent_geoms: vec![],
|
||
key_vertices: vec![],
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris,
|
||
});
|
||
}
|
||
|
||
// Text frame — closed rectangle, matches text color.
|
||
if ml.text_frame {
|
||
let frame_points: Vec<[f32; 3]> = vec![
|
||
wcs_corners[0],
|
||
wcs_corners[1],
|
||
wcs_corners[2],
|
||
wcs_corners[3],
|
||
wcs_corners[0],
|
||
];
|
||
wires.push(WireModel {
|
||
name,
|
||
points: frame_points,
|
||
color: text_color,
|
||
selected,
|
||
aci: 0,
|
||
pattern_length: 0.0,
|
||
pattern: [0.0; 8],
|
||
line_weight_px,
|
||
snap_pts: vec![],
|
||
tangent_geoms: vec![],
|
||
key_vertices: vec![],
|
||
aabb: WireModel::UNBOUNDED_AABB,
|
||
plinegen: true,
|
||
vp_scissor: None,
|
||
fill_tris: vec![],
|
||
});
|
||
}
|
||
}
|
||
}
|
||
|
||
wires
|
||
}
|
||
|
||
// ── Entity Z helper ───────────────────────────────────────────────────────
|
||
|
||
/// Extract the Z elevation from a text/mtext entity.
|
||
fn entity_z(entity: &EntityType) -> f32 {
|
||
match entity {
|
||
EntityType::Text(t) => t.insertion_point.z as f32,
|
||
EntityType::MText(t) => t.insertion_point.z as f32,
|
||
_ => 0.0,
|
||
}
|
||
}
|
||
|
||
// ── Legacy geometry (Viewport, Hatch outline, unrecognised) ───────────────
|
||
|
||
type Geometry = (
|
||
Vec<[f32; 3]>,
|
||
Vec<(Vec3, SnapHint)>,
|
||
Vec<TangentGeom>,
|
||
Vec<[f32; 3]>,
|
||
);
|
||
|
||
fn legacy_geometry(entity: &EntityType, world_offset: [f64; 3]) -> Geometry {
|
||
let [ox, oy, oz] = world_offset;
|
||
match entity {
|
||
EntityType::Viewport(vp) => {
|
||
let cx = (vp.center.x - ox) as f32;
|
||
let cy = (vp.center.y - oy) as f32;
|
||
let cz = (vp.center.z - oz) as f32;
|
||
let hw = (vp.width / 2.0) as f32;
|
||
let hh = (vp.height / 2.0) as f32;
|
||
let pts = vec![
|
||
[cx - hw, cy - hh, cz],
|
||
[cx + hw, cy - hh, cz],
|
||
[cx + hw, cy + hh, cz],
|
||
[cx - hw, cy + hh, cz],
|
||
[cx - hw, cy - hh, cz],
|
||
];
|
||
(pts, vec![], vec![], vec![])
|
||
}
|
||
EntityType::Insert(ins) => {
|
||
let ip = Vec3::new(
|
||
(ins.insert_point.x - ox) as f32,
|
||
(ins.insert_point.y - oy) as f32,
|
||
(ins.insert_point.z - oz) as f32,
|
||
);
|
||
let s = 0.1_f32;
|
||
let pts = vec![
|
||
[ip.x - s, ip.y, ip.z],
|
||
[ip.x + s, ip.y, ip.z],
|
||
[ip.x, ip.y - s, ip.z],
|
||
[ip.x, ip.y + s, ip.z],
|
||
];
|
||
(pts, vec![(ip, SnapHint::Insertion)], vec![], vec![])
|
||
}
|
||
EntityType::Hatch(h) => {
|
||
let normal = (h.normal.x, h.normal.y, h.normal.z);
|
||
// Convert a 2D OCS hatch boundary point to WCS, then subtract world_offset.
|
||
let to_wcs = |x: f64, y: f64| -> [f32; 3] {
|
||
let (wx, wy, wz) =
|
||
crate::scene::transform::ocs_point_to_wcs((x, y, h.elevation), normal);
|
||
[(wx - ox) as f32, (wy - oy) as f32, (wz - oz) as f32]
|
||
};
|
||
let mut pts: Vec<[f32; 3]> = Vec::new();
|
||
let mut key_verts: Vec<[f32; 3]> = Vec::new();
|
||
let mut snap_pts: Vec<(Vec3, SnapHint)> = Vec::new();
|
||
for path in &h.paths {
|
||
for edge in &path.edges {
|
||
match edge {
|
||
acadrust::entities::BoundaryEdge::Polyline(poly) => {
|
||
// Hatch-boundary polyline vertices encode bulge in
|
||
// `Vector3.z`; straight segments emit just the
|
||
// start vertex, bulged segments tessellate the arc
|
||
// between v0 → v1.
|
||
let start_idx = pts.len();
|
||
let verts = &poly.vertices;
|
||
let count = verts.len();
|
||
let seg_count = if poly.is_closed {
|
||
count
|
||
} else {
|
||
count.saturating_sub(1)
|
||
};
|
||
if count > 0 && pts.len() != start_idx {
|
||
pts.push([f32::NAN; 3]);
|
||
}
|
||
for i in 0..seg_count {
|
||
let v0 = &verts[i];
|
||
let v1 = &verts[(i + 1) % count];
|
||
let bulge = v0.z;
|
||
if bulge.abs() < 1e-9 {
|
||
let p = to_wcs(v0.x, v0.y);
|
||
pts.push(p);
|
||
key_verts.push(p);
|
||
continue;
|
||
}
|
||
let theta = 4.0 * bulge.atan();
|
||
let dx = v1.x - v0.x;
|
||
let dy = v1.y - v0.y;
|
||
let d = (dx * dx + dy * dy).sqrt();
|
||
if d < 1e-12 {
|
||
let p = to_wcs(v0.x, v0.y);
|
||
pts.push(p);
|
||
key_verts.push(p);
|
||
continue;
|
||
}
|
||
let r = (d * 0.5) / (theta * 0.5).sin().abs();
|
||
let mx = (v0.x + v1.x) * 0.5;
|
||
let my = (v0.y + v1.y) * 0.5;
|
||
let px = -dy / d;
|
||
let py = dx / d;
|
||
let sign = if bulge > 0.0 { 1.0_f64 } else { -1.0_f64 };
|
||
let center_offset = r * (theta * 0.5).cos();
|
||
let cx = mx + sign * px * center_offset;
|
||
let cy = my + sign * py * center_offset;
|
||
let a0 = (v0.y - cy).atan2(v0.x - cx);
|
||
let a1 = (v1.y - cy).atan2(v1.x - cx);
|
||
let mut sweep = a1 - a0;
|
||
const TAU: f64 = std::f64::consts::TAU;
|
||
if bulge > 0.0 {
|
||
if sweep <= 0.0 { sweep += TAU; }
|
||
} else if sweep >= 0.0 { sweep -= TAU; }
|
||
if sweep.abs() < 1e-9 {
|
||
sweep = if bulge > 0.0 { TAU } else { -TAU };
|
||
}
|
||
let segs = arc_segments(r, sweep.abs(), wire_chord_tol(r));
|
||
for j in 0..segs {
|
||
let a = a0 + sweep * (j as f64 / segs as f64);
|
||
let p = to_wcs(cx + r * a.cos(), cy + r * a.sin());
|
||
pts.push(p);
|
||
if j == 0 {
|
||
key_verts.push(p);
|
||
}
|
||
}
|
||
}
|
||
// Close the loop visually for closed polylines by
|
||
// returning to the first emitted point.
|
||
if poly.is_closed {
|
||
if let Some(first) = pts.get(start_idx).cloned() {
|
||
if first[0].is_finite() {
|
||
pts.push(first);
|
||
}
|
||
}
|
||
} else if let Some(last) = verts.last() {
|
||
let p = to_wcs(last.x, last.y);
|
||
pts.push(p);
|
||
key_verts.push(p);
|
||
}
|
||
}
|
||
acadrust::entities::BoundaryEdge::Line(ln) => {
|
||
let p0 = to_wcs(ln.start.x, ln.start.y);
|
||
let p1 = to_wcs(ln.end.x, ln.end.y);
|
||
if !pts.is_empty() {
|
||
pts.push([f32::NAN; 3]);
|
||
}
|
||
pts.push(p0);
|
||
pts.push(p1);
|
||
key_verts.push(p0);
|
||
key_verts.push(p1);
|
||
}
|
||
acadrust::entities::BoundaryEdge::CircularArc(arc) => {
|
||
let (sa, span) =
|
||
arc_signed_span(arc.start_angle, arc.end_angle, arc.counter_clockwise);
|
||
let segs = arc_segments(arc.radius, span.abs(), wire_chord_tol(arc.radius));
|
||
if !pts.is_empty() {
|
||
pts.push([f32::NAN; 3]);
|
||
}
|
||
for i in 0..=segs {
|
||
let t = sa + span * (i as f64 / segs as f64);
|
||
let p = to_wcs(
|
||
arc.center.x + arc.radius * t.cos(),
|
||
arc.center.y + arc.radius * t.sin(),
|
||
);
|
||
pts.push(p);
|
||
if i == 0 || i == segs {
|
||
key_verts.push(p);
|
||
}
|
||
}
|
||
snap_pts.push((
|
||
Vec3::from(to_wcs(arc.center.x, arc.center.y)),
|
||
SnapHint::Center,
|
||
));
|
||
}
|
||
acadrust::entities::BoundaryEdge::EllipticArc(ell) => {
|
||
let r_maj = (ell.major_axis_endpoint.x * ell.major_axis_endpoint.x
|
||
+ ell.major_axis_endpoint.y * ell.major_axis_endpoint.y)
|
||
.sqrt();
|
||
let r_min = r_maj * ell.minor_axis_ratio;
|
||
let rot = ell
|
||
.major_axis_endpoint
|
||
.y
|
||
.atan2(ell.major_axis_endpoint.x);
|
||
let (sa, span) =
|
||
arc_signed_span(ell.start_angle, ell.end_angle, ell.counter_clockwise);
|
||
let segs = arc_segments(r_maj, span.abs(), wire_chord_tol(r_maj));
|
||
if !pts.is_empty() {
|
||
pts.push([f32::NAN; 3]);
|
||
}
|
||
let (cr, sr) = (rot.cos(), rot.sin());
|
||
for i in 0..=segs {
|
||
let t = sa + span * (i as f64 / segs as f64);
|
||
let lx = r_maj * t.cos();
|
||
let ly = r_min * t.sin();
|
||
let p = to_wcs(
|
||
ell.center.x + lx * cr - ly * sr,
|
||
ell.center.y + lx * sr + ly * cr,
|
||
);
|
||
pts.push(p);
|
||
if i == 0 || i == segs {
|
||
key_verts.push(p);
|
||
}
|
||
}
|
||
snap_pts.push((
|
||
Vec3::from(to_wcs(ell.center.x, ell.center.y)),
|
||
SnapHint::Center,
|
||
));
|
||
}
|
||
_ => {}
|
||
}
|
||
}
|
||
}
|
||
if pts.is_empty() {
|
||
pts = vec![[0.0, 0.0, 0.0], [0.0, 0.0, 0.0]];
|
||
}
|
||
(pts, snap_pts, vec![], key_verts)
|
||
}
|
||
EntityType::Ole2Frame(ole) => {
|
||
// OLE objects carry a bounding rectangle in model space.
|
||
// Render a simple X-through-rectangle placeholder.
|
||
let x0 = (ole.upper_left_corner.x - ox) as f32;
|
||
let y0 = (ole.lower_right_corner.y - oy) as f32;
|
||
let x1 = (ole.lower_right_corner.x - ox) as f32;
|
||
let y1 = (ole.upper_left_corner.y - oy) as f32;
|
||
let z = (ole.upper_left_corner.z - oz) as f32;
|
||
if (x1 - x0).abs() < 1e-6 && (y1 - y0).abs() < 1e-6 {
|
||
// Degenerate / unknown size — show a small cross.
|
||
let s = 0.5_f32;
|
||
return (vec![[-s, 0.0, 0.0], [s, 0.0, 0.0]], vec![], vec![], vec![]);
|
||
}
|
||
let pts = vec![
|
||
// Outer rectangle
|
||
[x0, y0, z],
|
||
[x1, y0, z],
|
||
[x1, y0, z],
|
||
[x1, y1, z],
|
||
[x1, y1, z],
|
||
[x0, y1, z],
|
||
[x0, y1, z],
|
||
[x0, y0, z],
|
||
// Diagonal X
|
||
[x0, y0, z],
|
||
[x1, y1, z],
|
||
[f32::NAN, f32::NAN, f32::NAN],
|
||
[x1, y0, z],
|
||
[x0, y1, z],
|
||
];
|
||
(pts, vec![], vec![], vec![[x0, y0, z], [x1, y1, z]])
|
||
}
|
||
_ => {
|
||
let s = 0.5_f32;
|
||
(vec![[-s, 0.0, 0.0], [s, 0.0, 0.0]], vec![], vec![], vec![])
|
||
}
|
||
}
|
||
}
|
||
|
||
/// Extract pre-computed edge-wire points from Solid3D / Region / Body entities.
|
||
///
|
||
/// AutoCAD stores explicit wire geometry (from SOLVIEW / 3DPLOT) alongside the
|
||
/// ACIS data. We use this as a visible fallback when the SAT tessellator
|
||
/// produces no mesh (e.g. binary SAB data or unsupported geometry).
|
||
fn solid_wire_fallback(entity: &EntityType, world_offset: [f64; 3]) -> Vec<[f32; 3]> {
|
||
let [ox, oy, oz] = world_offset;
|
||
let wires: &[acadrust::entities::Wire] = match entity {
|
||
EntityType::Solid3D(s) => &s.wires,
|
||
EntityType::Region(r) => &r.wires,
|
||
EntityType::Body(b) => &b.wires,
|
||
_ => return vec![],
|
||
};
|
||
|
||
if wires.is_empty() {
|
||
return vec![];
|
||
}
|
||
|
||
let mut pts: Vec<[f32; 3]> = Vec::new();
|
||
for wire in wires {
|
||
if wire.points.len() < 2 {
|
||
continue;
|
||
}
|
||
for v in &wire.points {
|
||
pts.push([(v.x - ox) as f32, (v.y - oy) as f32, (v.z - oz) as f32]);
|
||
}
|
||
// NaN sentinel separates distinct wire segments.
|
||
pts.push([f32::NAN, f32::NAN, f32::NAN]);
|
||
}
|
||
pts
|
||
}
|
||
|
||
fn dimension_geometry(
|
||
dim: &Dimension,
|
||
arrow1: &ArrowKind,
|
||
arrow2: &ArrowKind,
|
||
params: DimLineParams,
|
||
suppress: SuppressFlags,
|
||
world_offset: [f64; 3],
|
||
) -> DimGeom {
|
||
let lv = |v| vec3_local(v, world_offset);
|
||
let mut g = DimGeom::new();
|
||
match dim {
|
||
Dimension::Aligned(d) => {
|
||
let first = lv(d.first_point);
|
||
let second = lv(d.second_point);
|
||
let def = lv(d.definition_point);
|
||
let axis = normalized_or(second - first, Vec3::X);
|
||
append_linear_dimension(
|
||
&mut g, first, second, def, axis, arrow1, arrow2, params, suppress,
|
||
);
|
||
}
|
||
Dimension::Linear(d) => {
|
||
let first = lv(d.first_point);
|
||
let second = lv(d.second_point);
|
||
let def = lv(d.definition_point);
|
||
let axis = Vec3::new(d.rotation.cos() as f32, d.rotation.sin() as f32, 0.0);
|
||
append_linear_dimension(
|
||
&mut g,
|
||
first,
|
||
second,
|
||
def,
|
||
normalized_or(axis, Vec3::X),
|
||
arrow1,
|
||
arrow2,
|
||
params,
|
||
suppress,
|
||
);
|
||
}
|
||
Dimension::Radius(d) => {
|
||
let center = lv(d.angle_vertex);
|
||
let point = lv(d.definition_point);
|
||
let text = dimension_text_position(dim, world_offset);
|
||
add_segment(&mut g.dim_lines, center, point);
|
||
add_segment(&mut g.dim_lines, point, text);
|
||
append_arrow(&mut g, point, normalized_or(center - point, Vec3::X), arrow1);
|
||
let radius = (point - center).length();
|
||
append_center_mark(&mut g, center, params.dimcen, radius);
|
||
}
|
||
Dimension::Diameter(d) => {
|
||
let p1 = lv(d.angle_vertex);
|
||
let p2 = lv(d.definition_point);
|
||
add_segment(&mut g.dim_lines, p1, p2);
|
||
append_arrow(&mut g, p1, normalized_or(p2 - p1, Vec3::X), arrow1);
|
||
append_arrow(&mut g, p2, normalized_or(p1 - p2, Vec3::X), arrow2);
|
||
let radius = (p2 - p1).length() * 0.5;
|
||
append_center_mark(&mut g, (p1 + p2) * 0.5, params.dimcen, radius);
|
||
}
|
||
Dimension::Angular2Ln(d) => {
|
||
append_angular_dimension(
|
||
&mut g,
|
||
lv(d.angle_vertex),
|
||
lv(d.first_point),
|
||
lv(d.second_point),
|
||
lv(d.dimension_arc),
|
||
arrow1,
|
||
arrow2,
|
||
);
|
||
}
|
||
Dimension::Angular3Pt(d) => {
|
||
append_angular_dimension(
|
||
&mut g,
|
||
lv(d.angle_vertex),
|
||
lv(d.first_point),
|
||
lv(d.second_point),
|
||
lv(d.definition_point),
|
||
arrow1,
|
||
arrow2,
|
||
);
|
||
}
|
||
Dimension::Ordinate(d) => {
|
||
add_segment(
|
||
&mut g.dim_lines,
|
||
lv(d.feature_location),
|
||
lv(d.definition_point),
|
||
);
|
||
add_segment(
|
||
&mut g.dim_lines,
|
||
lv(d.definition_point),
|
||
lv(d.leader_endpoint),
|
||
);
|
||
}
|
||
}
|
||
g
|
||
}
|
||
|
||
fn append_linear_dimension(
|
||
g: &mut DimGeom,
|
||
first: Vec3,
|
||
second: Vec3,
|
||
def: Vec3,
|
||
axis: Vec3,
|
||
arrow1: &ArrowKind,
|
||
arrow2: &ArrowKind,
|
||
params: DimLineParams,
|
||
suppress: SuppressFlags,
|
||
) {
|
||
let perp = Vec3::new(-axis.y, axis.x, 0.0);
|
||
let dim_line_pos = def.dot(perp);
|
||
let offset1 = dim_line_pos - first.dot(perp);
|
||
let offset2 = dim_line_pos - second.dot(perp);
|
||
let d1 = first + perp * offset1;
|
||
let d2 = second + perp * offset2;
|
||
let sign1 = if offset1 >= 0.0 { 1.0_f32 } else { -1.0 };
|
||
let sign2 = if offset2 >= 0.0 { 1.0_f32 } else { -1.0 };
|
||
|
||
// DIMFXLON / DIMFXL: fixed extension-line length from the dim line back
|
||
// toward (but not past) the definition point. Otherwise grow from the
|
||
// def point with DIMEXO gap, extending DIMEXE past the dim line.
|
||
let (ext1_start, ext1_end, ext2_start, ext2_end) = if params.dimfxlon {
|
||
let fxl = params.dimfxl.max(0.0);
|
||
let s1 = d1 - perp * (sign1 * fxl);
|
||
let e1 = d1 + perp * (sign1 * params.dimexe);
|
||
let s2 = d2 - perp * (sign2 * fxl);
|
||
let e2 = d2 + perp * (sign2 * params.dimexe);
|
||
(s1, e1, s2, e2)
|
||
} else {
|
||
(
|
||
first + perp * (sign1 * params.dimexo),
|
||
d1 + perp * (sign1 * params.dimexe),
|
||
second + perp * (sign2 * params.dimexo),
|
||
d2 + perp * (sign2 * params.dimexe),
|
||
)
|
||
};
|
||
if !suppress.ext1 {
|
||
add_segment(&mut g.ext_lines, ext1_start, ext1_end);
|
||
}
|
||
if !suppress.ext2 {
|
||
add_segment(&mut g.ext_lines, ext2_start, ext2_end);
|
||
}
|
||
|
||
// DIMDLE: dim line overshoots the ext line by `dimdle` at each end,
|
||
// but only when ticks are in use (DIMTSZ > 0). With arrowheads this
|
||
// is ignored, matching AutoCAD.
|
||
let dle = if params.ticks { params.dimdle } else { 0.0 };
|
||
let dir_d1_to_d2 = normalized_or(d2 - d1, axis);
|
||
let d1_out = d1 - dir_d1_to_d2 * dle;
|
||
let d2_out = d2 + dir_d1_to_d2 * dle;
|
||
// DIMSD1/DIMSD2: when *both* set, omit the dim line entirely. AutoCAD
|
||
// splits at text otherwise — without that pivot info, leave as-is.
|
||
let _ = params.dimsoxd; // DIMSOXD: only meaningful when text is auto-placed
|
||
// outside the ext lines; we honour the saved
|
||
// text_middle_point so this is a no-op for files.
|
||
if !(suppress.dim1 && suppress.dim2) {
|
||
add_segment(&mut g.dim_lines, d1_out, d2_out);
|
||
}
|
||
append_arrow(g, d1, normalized_or(d2 - d1, axis), arrow1);
|
||
append_arrow(g, d2, normalized_or(d1 - d2, -axis), arrow2);
|
||
}
|
||
|
||
/// Draw a center mark for radius/diameter dimensions.
|
||
/// DIMCEN > 0 → small "+" of half-length |DIMCEN| at the centre.
|
||
/// DIMCEN < 0 → small "+" *plus* four line segments extending from the
|
||
/// circle (radius - |DIMCEN|) outward to (radius + |DIMCEN|).
|
||
/// DIMCEN = 0 → no mark.
|
||
fn append_center_mark(g: &mut DimGeom, center: Vec3, dimcen: f32, radius: f32) {
|
||
let mag = dimcen.abs();
|
||
if mag <= 1e-6 {
|
||
return;
|
||
}
|
||
// Small "+" at the centre.
|
||
let h = mag;
|
||
add_segment(
|
||
&mut g.dim_lines,
|
||
Vec3::new(center.x - h, center.y, center.z),
|
||
Vec3::new(center.x + h, center.y, center.z),
|
||
);
|
||
add_segment(
|
||
&mut g.dim_lines,
|
||
Vec3::new(center.x, center.y - h, center.z),
|
||
Vec3::new(center.x, center.y + h, center.z),
|
||
);
|
||
if dimcen < 0.0 && radius > mag + 1e-6 {
|
||
let inner = (radius - mag).max(0.0);
|
||
let outer = radius + mag;
|
||
// Four short radial strokes spanning the circle edge.
|
||
add_segment(
|
||
&mut g.dim_lines,
|
||
Vec3::new(center.x + inner, center.y, center.z),
|
||
Vec3::new(center.x + outer, center.y, center.z),
|
||
);
|
||
add_segment(
|
||
&mut g.dim_lines,
|
||
Vec3::new(center.x - inner, center.y, center.z),
|
||
Vec3::new(center.x - outer, center.y, center.z),
|
||
);
|
||
add_segment(
|
||
&mut g.dim_lines,
|
||
Vec3::new(center.x, center.y + inner, center.z),
|
||
Vec3::new(center.x, center.y + outer, center.z),
|
||
);
|
||
add_segment(
|
||
&mut g.dim_lines,
|
||
Vec3::new(center.x, center.y - inner, center.z),
|
||
Vec3::new(center.x, center.y - outer, center.z),
|
||
);
|
||
}
|
||
}
|
||
|
||
fn append_angular_dimension(
|
||
g: &mut DimGeom,
|
||
vertex: Vec3,
|
||
first: Vec3,
|
||
second: Vec3,
|
||
arc_point: Vec3,
|
||
arrow1: &ArrowKind,
|
||
arrow2: &ArrowKind,
|
||
) {
|
||
add_segment(&mut g.ext_lines, vertex, first);
|
||
add_segment(&mut g.ext_lines, vertex, second);
|
||
|
||
let radius = vertex.distance(arc_point);
|
||
if radius <= 1e-6 {
|
||
return;
|
||
}
|
||
|
||
let start = (first.y - vertex.y).atan2(first.x - vertex.x);
|
||
let mut end = (second.y - vertex.y).atan2(second.x - vertex.x);
|
||
let mut delta = end - start;
|
||
while delta <= 0.0 {
|
||
delta += std::f32::consts::TAU;
|
||
}
|
||
if delta > std::f32::consts::PI {
|
||
end -= std::f32::consts::TAU;
|
||
delta = end - start;
|
||
}
|
||
|
||
let steps = 32;
|
||
let mut arc_pts = Vec::with_capacity((steps + 1) as usize);
|
||
for i in 0..=steps {
|
||
let t = i as f32 / steps as f32;
|
||
let a = start + delta * t;
|
||
arc_pts.push(vertex + Vec3::new(a.cos() * radius, a.sin() * radius, 0.0));
|
||
}
|
||
add_polyline(&mut g.dim_lines, &arc_pts);
|
||
|
||
if arc_pts.len() >= 2 {
|
||
append_arrow(
|
||
g,
|
||
arc_pts[0],
|
||
normalized_or(arc_pts[1] - arc_pts[0], Vec3::X),
|
||
arrow1,
|
||
);
|
||
let n = arc_pts.len();
|
||
append_arrow(
|
||
g,
|
||
arc_pts[n - 1],
|
||
normalized_or(arc_pts[n - 2] - arc_pts[n - 1], Vec3::X),
|
||
arrow2,
|
||
);
|
||
}
|
||
}
|
||
|
||
fn push_tri(out: &mut Vec<[f32; 3]>, a: Vec3, b: Vec3, c: Vec3) {
|
||
out.push([a.x, a.y, a.z]);
|
||
out.push([b.x, b.y, b.z]);
|
||
out.push([c.x, c.y, c.z]);
|
||
}
|
||
|
||
fn append_arrow(g: &mut DimGeom, tip: Vec3, dir: Vec3, arrow: &ArrowKind) {
|
||
let dir = normalized_or(dir, Vec3::X);
|
||
let perp = Vec3::new(-dir.y, dir.x, 0.0);
|
||
match *arrow {
|
||
ArrowKind::None => {}
|
||
ArrowKind::Triangle {
|
||
size,
|
||
filled,
|
||
size_mul,
|
||
} => {
|
||
let size = size * size_mul;
|
||
let base = tip + dir * size;
|
||
// ~1:6 length:half-width ratio (≈9.5° half-angle) matches
|
||
// AutoCAD's standard ClosedFilled block.
|
||
let half_w = size / 6.0;
|
||
let left = base + perp * half_w;
|
||
let right = base - perp * half_w;
|
||
add_segment(&mut g.dim_lines, tip, left);
|
||
add_segment(&mut g.dim_lines, left, right);
|
||
add_segment(&mut g.dim_lines, right, tip);
|
||
if filled {
|
||
push_tri(&mut g.arrow_fill, tip, left, right);
|
||
}
|
||
}
|
||
ArrowKind::Tick { size } => {
|
||
// 45° oblique tick crossing the dim line at the tip; `size` is
|
||
// the half-length (matches AutoCAD's DIMTSZ semantics).
|
||
let off = (dir + perp).normalize_or_zero() * size;
|
||
add_segment(&mut g.dim_lines, tip - off, tip + off);
|
||
}
|
||
ArrowKind::Open { size, half_angle } => {
|
||
let base = tip + dir * size;
|
||
let half_w = size * half_angle.tan();
|
||
let left = base + perp * half_w;
|
||
let right = base - perp * half_w;
|
||
add_segment(&mut g.dim_lines, tip, left);
|
||
add_segment(&mut g.dim_lines, tip, right);
|
||
}
|
||
ArrowKind::Dot { size, filled } => {
|
||
let r = size * 0.5;
|
||
const N: usize = 16;
|
||
let mut ring: Vec<Vec3> = Vec::with_capacity(N + 1);
|
||
for i in 0..=N {
|
||
let a = i as f32 * std::f32::consts::TAU / N as f32;
|
||
ring.push(tip + Vec3::new(a.cos() * r, a.sin() * r, 0.0));
|
||
}
|
||
add_polyline(&mut g.dim_lines, &ring);
|
||
if filled {
|
||
for i in 0..N {
|
||
push_tri(&mut g.arrow_fill, tip, ring[i], ring[i + 1]);
|
||
}
|
||
}
|
||
}
|
||
ArrowKind::Origin { size } => {
|
||
// Small filled dot at the tip with a perpendicular tick crossing
|
||
// the dim line — matches "_ORIGIN" / "_ORIGIN2" blocks.
|
||
let r = size * 0.25;
|
||
const N: usize = 12;
|
||
let mut ring: Vec<Vec3> = Vec::with_capacity(N + 1);
|
||
for i in 0..=N {
|
||
let a = i as f32 * std::f32::consts::TAU / N as f32;
|
||
ring.push(tip + Vec3::new(a.cos() * r, a.sin() * r, 0.0));
|
||
}
|
||
add_polyline(&mut g.dim_lines, &ring);
|
||
for i in 0..N {
|
||
push_tri(&mut g.arrow_fill, tip, ring[i], ring[i + 1]);
|
||
}
|
||
let half = size * 0.5;
|
||
add_segment(&mut g.dim_lines, tip - perp * half, tip + perp * half);
|
||
}
|
||
ArrowKind::Box_ { size, filled } => {
|
||
let half = size * 0.5;
|
||
let p1 = tip - dir * half - perp * half;
|
||
let p2 = tip + dir * half - perp * half;
|
||
let p3 = tip + dir * half + perp * half;
|
||
let p4 = tip - dir * half + perp * half;
|
||
add_segment(&mut g.dim_lines, p1, p2);
|
||
add_segment(&mut g.dim_lines, p2, p3);
|
||
add_segment(&mut g.dim_lines, p3, p4);
|
||
add_segment(&mut g.dim_lines, p4, p1);
|
||
if filled {
|
||
push_tri(&mut g.arrow_fill, p1, p2, p3);
|
||
push_tri(&mut g.arrow_fill, p1, p3, p4);
|
||
}
|
||
}
|
||
ArrowKind::Datum { size, filled } => {
|
||
// Right-pointing triangle with the base perpendicular to the dim
|
||
// line at the tip and the apex along +dir.
|
||
let half = size * 0.5;
|
||
let base_a = tip + perp * half;
|
||
let base_b = tip - perp * half;
|
||
let apex = tip + dir * size;
|
||
add_segment(&mut g.dim_lines, base_a, apex);
|
||
add_segment(&mut g.dim_lines, apex, base_b);
|
||
add_segment(&mut g.dim_lines, base_b, base_a);
|
||
if filled {
|
||
push_tri(&mut g.arrow_fill, base_a, apex, base_b);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
fn add_segment(points: &mut Vec<[f32; 3]>, a: Vec3, b: Vec3) {
|
||
if !points.is_empty() {
|
||
points.push([f32::NAN, f32::NAN, f32::NAN]);
|
||
}
|
||
points.push([a.x, a.y, a.z]);
|
||
points.push([b.x, b.y, b.z]);
|
||
}
|
||
|
||
fn add_polyline(points: &mut Vec<[f32; 3]>, polyline: &[Vec3]) {
|
||
if polyline.len() < 2 {
|
||
return;
|
||
}
|
||
if !points.is_empty() {
|
||
points.push([f32::NAN, f32::NAN, f32::NAN]);
|
||
}
|
||
points.extend(polyline.iter().map(|p| [p.x, p.y, p.z]));
|
||
}
|
||
|
||
fn dimension_snap_pts(dim: &Dimension, world_offset: [f64; 3]) -> Vec<(Vec3, SnapHint)> {
|
||
let lv = |v: acadrust::types::Vector3| {
|
||
Vec3::new(
|
||
(v.x - world_offset[0]) as f32,
|
||
(v.y - world_offset[1]) as f32,
|
||
(v.z - world_offset[2]) as f32,
|
||
)
|
||
};
|
||
let node = |v: acadrust::types::Vector3| (lv(v), SnapHint::Node);
|
||
match dim {
|
||
Dimension::Linear(d) => vec![
|
||
node(d.first_point),
|
||
node(d.second_point),
|
||
node(d.definition_point),
|
||
],
|
||
Dimension::Aligned(d) => vec![
|
||
node(d.first_point),
|
||
node(d.second_point),
|
||
node(d.definition_point),
|
||
],
|
||
Dimension::Radius(d) => vec![node(d.angle_vertex), node(d.definition_point)],
|
||
Dimension::Diameter(d) => vec![node(d.angle_vertex), node(d.definition_point)],
|
||
Dimension::Angular2Ln(d) => vec![
|
||
node(d.angle_vertex),
|
||
node(d.first_point),
|
||
node(d.second_point),
|
||
node(d.definition_point),
|
||
],
|
||
Dimension::Angular3Pt(d) => vec![
|
||
node(d.angle_vertex),
|
||
node(d.first_point),
|
||
node(d.second_point),
|
||
node(d.definition_point),
|
||
],
|
||
Dimension::Ordinate(d) => vec![
|
||
node(d.definition_point),
|
||
node(d.feature_location),
|
||
node(d.leader_endpoint),
|
||
],
|
||
}
|
||
}
|
||
|
||
fn dimension_text_entity(
|
||
dim: &Dimension,
|
||
text_height: f64,
|
||
style: Option<&DimStyle>,
|
||
) -> Option<Text> {
|
||
let value = dimension_text_value(dim, style)?;
|
||
// Use f64 position directly to avoid f32 round-trip precision loss at large
|
||
// coordinates (e.g. Turkish UTM ~4,000,000 m). tessellate() will apply
|
||
// world_offset when rendering this synthetic Text entity.
|
||
let pos_f64 = dimension_text_pos_f64(dim, style, text_height);
|
||
let base = dim.base();
|
||
|
||
// DIMTIH/DIMTOH: when set, text is forced horizontal (rotation = 0)
|
||
// regardless of the dim line angle. Honour explicit base.text_rotation first.
|
||
let dimtih = style.map(|s| s.dimtih).unwrap_or(false);
|
||
let dimtoh = style.map(|s| s.dimtoh).unwrap_or(false);
|
||
let rotation = if base.text_rotation.abs() > 1e-9 {
|
||
base.text_rotation
|
||
} else if dimtih || dimtoh {
|
||
0.0
|
||
} else {
|
||
dimension_text_natural_rotation(dim)
|
||
};
|
||
|
||
let mut text = Text::with_value(value, pos_f64)
|
||
.with_height(text_height)
|
||
.with_rotation(rotation);
|
||
// Prefer the dim style's text style (DIMTXSTY) over the dim's own style_name
|
||
// (which is the *dim style* name, not the text style).
|
||
if let Some(s) = style {
|
||
if !s.dimtxsty.trim().is_empty() {
|
||
text.style = s.dimtxsty.clone();
|
||
} else {
|
||
text.style = base.style_name.clone();
|
||
}
|
||
} else {
|
||
text.style = base.style_name.clone();
|
||
}
|
||
text.common = base.common.clone();
|
||
Some(text)
|
||
}
|
||
|
||
fn dimension_text_natural_rotation(dim: &Dimension) -> f64 {
|
||
let angle = match dim {
|
||
Dimension::Linear(d) => d.rotation,
|
||
Dimension::Aligned(d) => {
|
||
let dx = d.second_point.x - d.first_point.x;
|
||
let dy = d.second_point.y - d.first_point.y;
|
||
dy.atan2(dx)
|
||
}
|
||
_ => 0.0,
|
||
};
|
||
// Clamp to (-π/2, π/2] so text never appears upside-down.
|
||
let pi = std::f64::consts::PI;
|
||
if angle > pi / 2.0 {
|
||
angle - pi
|
||
} else if angle <= -pi / 2.0 {
|
||
angle + pi
|
||
} else {
|
||
angle
|
||
}
|
||
}
|
||
|
||
fn dimension_text_value(dim: &Dimension, style: Option<&DimStyle>) -> Option<String> {
|
||
let base = dim.base();
|
||
let is_angular = matches!(dim, Dimension::Angular2Ln(_) | Dimension::Angular3Pt(_));
|
||
|
||
// Auto-generated body (the value AutoCAD would emit if the user did not
|
||
// override it). Built first so user_text "<>" substitution can re-use it.
|
||
let primary = if is_angular {
|
||
format_angular_value(dim.measurement(), style)
|
||
} else {
|
||
let v = format_linear_value(dim.measurement(), style);
|
||
match dim {
|
||
Dimension::Radius(_) => format!("R{}", v),
|
||
Dimension::Diameter(_) => format!("Ø{}", v),
|
||
_ => v,
|
||
}
|
||
};
|
||
|
||
// Tolerances / limits — applied to the primary value before DIMPOST wraps.
|
||
let primary = apply_tolerance(primary, dim.measurement(), style, is_angular);
|
||
// DIMPOST: "<>" template (prefix/suffix wrap).
|
||
let primary = apply_dimpost(&primary, style);
|
||
|
||
// Alternate units appended in brackets when DIMALT is on (linear only).
|
||
let composed = if !is_angular {
|
||
match alternate_units_text(dim.measurement(), style) {
|
||
Some(alt) => format!("{} [{}]", primary, alt),
|
||
None => primary,
|
||
}
|
||
} else {
|
||
primary
|
||
};
|
||
|
||
// Explicit user override (mtext-style "user_text") wins, but "<>" inside
|
||
// it substitutes the measured value. " " (single space) suppresses text.
|
||
if let Some(user_text) = &base.user_text {
|
||
if user_text.is_empty() || user_text.trim().is_empty() {
|
||
return None;
|
||
}
|
||
return Some(user_text.replace("<>", &composed));
|
||
}
|
||
if !base.text.trim().is_empty() {
|
||
return Some(base.text.replace("<>", &composed));
|
||
}
|
||
Some(composed)
|
||
}
|
||
|
||
/// Append tolerance text per DIMTOL / DIMLIM:
|
||
/// DIMLIM true → replace value with "high/low" limits stacked
|
||
/// DIMTOL true → "value +tp/-tm" (or "value±t" when tp==tm)
|
||
fn apply_tolerance(
|
||
value: String,
|
||
measurement: f64,
|
||
style: Option<&DimStyle>,
|
||
is_angular: bool,
|
||
) -> String {
|
||
let Some(s) = style else { return value };
|
||
let dimtdec = s.dimtdec.max(0) as usize;
|
||
let dimtzin = s.dimtzin;
|
||
let fmt = |v: f64| -> String {
|
||
let raw = format!("{:.*}", dimtdec, v);
|
||
apply_linear_zero_suppression(&raw, dimtzin)
|
||
};
|
||
if s.dimlim {
|
||
// Replace value entirely with high/low limits.
|
||
let high = measurement + s.dimtp;
|
||
let low = measurement - s.dimtm;
|
||
return format!("{}/{}", fmt(high), fmt(low));
|
||
}
|
||
if s.dimtol {
|
||
let unit = if is_angular { "°" } else { "" };
|
||
if (s.dimtp - s.dimtm).abs() < 1e-12 && s.dimtp.abs() > 1e-12 {
|
||
return format!("{}±{}{}", value, fmt(s.dimtp), unit);
|
||
}
|
||
if s.dimtp.abs() > 1e-12 || s.dimtm.abs() > 1e-12 {
|
||
return format!(
|
||
"{} +{}{} / -{}{}",
|
||
value,
|
||
fmt(s.dimtp),
|
||
unit,
|
||
fmt(s.dimtm),
|
||
unit
|
||
);
|
||
}
|
||
}
|
||
value
|
||
}
|
||
|
||
/// Build the bracketed alternate-units suffix when DIMALT is enabled.
|
||
fn alternate_units_text(measurement: f64, style: Option<&DimStyle>) -> Option<String> {
|
||
let s = style?;
|
||
if !s.dimalt {
|
||
return None;
|
||
}
|
||
let mut v = measurement * s.dimaltf;
|
||
if s.dimaltrnd > 1e-12 {
|
||
v = (v / s.dimaltrnd).round() * s.dimaltrnd;
|
||
}
|
||
let dec = s.dimaltd.max(0) as usize;
|
||
let raw = format_with_unit(v, s.dimaltu, dec, s.dimfrac);
|
||
let suppressed = apply_linear_zero_suppression(&raw, s.dimaltz);
|
||
let sep_swapped = swap_decimal_sep(&suppressed, s.dimdsep);
|
||
// DIMAPOST wraps the alt value (same "<>" convention as DIMPOST).
|
||
let wrapped = if s.dimapost.is_empty() {
|
||
sep_swapped
|
||
} else if s.dimapost.contains("<>") {
|
||
s.dimapost.replace("<>", &sep_swapped)
|
||
} else {
|
||
format!("{}{}", sep_swapped, s.dimapost)
|
||
};
|
||
Some(wrapped)
|
||
}
|
||
|
||
/// Wrap a measured value with the style's DIMPOST prefix/suffix template.
|
||
/// "<>" inside DIMPOST is replaced by the value; absent "<>" appends.
|
||
fn apply_dimpost(value: &str, style: Option<&DimStyle>) -> String {
|
||
let post = style.map(|s| s.dimpost.as_str()).unwrap_or("");
|
||
if post.is_empty() {
|
||
return value.to_string();
|
||
}
|
||
if post.contains("<>") {
|
||
post.replace("<>", value)
|
||
} else {
|
||
format!("{}{}", value, post)
|
||
}
|
||
}
|
||
|
||
/// Format a linear measurement honouring DIMLFAC, DIMRND, DIMDEC, DIMZIN, DIMDSEP, DIMLUNIT.
|
||
fn format_linear_value(measurement: f64, style: Option<&DimStyle>) -> String {
|
||
let (dec, zin, lfac, rnd, dsep, lunit, frac) = style
|
||
.map(|s| {
|
||
(
|
||
s.dimdec, s.dimzin, s.dimlfac, s.dimrnd, s.dimdsep, s.dimlunit, s.dimfrac,
|
||
)
|
||
})
|
||
.unwrap_or((4, 8, 1.0, 0.0, 46, 2, 0));
|
||
|
||
let lfac = if lfac.abs() < 1e-12 { 1.0 } else { lfac };
|
||
let mut v = measurement * lfac;
|
||
if rnd > 1e-12 {
|
||
v = (v / rnd).round() * rnd;
|
||
}
|
||
let dec = dec.max(0) as usize;
|
||
let raw = format_with_unit(v, lunit, dec, frac);
|
||
let suppressed = apply_linear_zero_suppression(&raw, zin);
|
||
swap_decimal_sep(&suppressed, dsep)
|
||
}
|
||
|
||
/// Dispatch on DIMLUNIT / DIMALTU.
|
||
/// 1 = Scientific
|
||
/// 2 = Decimal (default)
|
||
/// 3 = Engineering (feet + decimal inches; 1 unit = 1 inch)
|
||
/// 4 = Architectural (feet + fractional inches)
|
||
/// 5 = Fractional (integer + fractional inches)
|
||
/// 6 = Windows desktop → falls back to Decimal
|
||
/// `dimfrac` controls denominator power for arch/fractional output (0/1/2);
|
||
/// rendered inline as "n/d" (stacked glyphs require MText support).
|
||
fn format_with_unit(value: f64, unit: i16, dec: usize, dimfrac: i16) -> String {
|
||
match unit {
|
||
1 => format!("{:.*e}", dec, value),
|
||
3 => format_engineering(value, dec),
|
||
4 => format_architectural(value, dimfrac),
|
||
5 => format_fractional(value, dimfrac),
|
||
_ => format!("{:.*}", dec, value),
|
||
}
|
||
}
|
||
|
||
fn format_engineering(inches: f64, dec: usize) -> String {
|
||
let sign = if inches < 0.0 { "-" } else { "" };
|
||
let abs = inches.abs();
|
||
let feet = (abs / 12.0).trunc();
|
||
let rem_in = abs - feet * 12.0;
|
||
format!("{}{:.0}'-{:.*}\"", sign, feet, dec, rem_in)
|
||
}
|
||
|
||
fn format_architectural(inches: f64, dimfrac: i16) -> String {
|
||
let sign = if inches < 0.0 { "-" } else { "" };
|
||
let abs = inches.abs();
|
||
let feet = (abs / 12.0).trunc();
|
||
let rem_in_total = abs - feet * 12.0;
|
||
let whole = rem_in_total.trunc();
|
||
let frac = rem_in_total - whole;
|
||
let frac_str = fraction_string(frac, dimfrac);
|
||
if frac_str.is_empty() {
|
||
format!("{}{:.0}'-{:.0}\"", sign, feet, whole)
|
||
} else {
|
||
format!("{}{:.0}'-{:.0} {}\"", sign, feet, whole, frac_str)
|
||
}
|
||
}
|
||
|
||
fn format_fractional(value: f64, dimfrac: i16) -> String {
|
||
let sign = if value < 0.0 { "-" } else { "" };
|
||
let abs = value.abs();
|
||
let whole = abs.trunc();
|
||
let frac = abs - whole;
|
||
let frac_str = fraction_string(frac, dimfrac);
|
||
if frac_str.is_empty() {
|
||
format!("{}{:.0}", sign, whole)
|
||
} else if whole == 0.0 {
|
||
format!("{}{}", sign, frac_str)
|
||
} else {
|
||
format!("{}{:.0} {}", sign, whole, frac_str)
|
||
}
|
||
}
|
||
|
||
fn fraction_string(frac: f64, dimfrac: i16) -> String {
|
||
// DIMFRAC denominator: AutoCAD encodes this on DIMSTYLE via DIMLUNIT
|
||
// pairing — the value we accept is the *power-of-2* exponent (1..=6 ish).
|
||
// Pick a sensible cap so the printed fraction stays readable.
|
||
let exp = (dimfrac.clamp(0, 8) as u32).max(2) + 2; // 2..=10 → 4..=1024
|
||
let denom = 1u64 << exp;
|
||
let numer = (frac * denom as f64).round() as i64;
|
||
if numer <= 0 {
|
||
return String::new();
|
||
}
|
||
let mut n = numer as u64;
|
||
let mut d = denom;
|
||
while n % 2 == 0 && d % 2 == 0 {
|
||
n /= 2;
|
||
d /= 2;
|
||
}
|
||
if n == 0 {
|
||
String::new()
|
||
} else if d == 1 {
|
||
format!("{}", n) // whole-number overflow back to caller
|
||
} else {
|
||
format!("{}/{}", n, d)
|
||
}
|
||
}
|
||
|
||
/// Format an angular measurement (input in degrees as Dimension::measurement
|
||
/// returns for angular variants) honouring DIMAUNIT, DIMADEC, DIMAZIN.
|
||
fn format_angular_value(measurement_deg: f64, style: Option<&DimStyle>) -> String {
|
||
let (aunit, adec, azin) = style
|
||
.map(|s| (s.dimaunit, s.dimadec, s.dimazin))
|
||
.unwrap_or((0, 2, 0));
|
||
let adec = adec.max(0) as usize;
|
||
|
||
match aunit {
|
||
// 1 = Degrees / Minutes / Seconds
|
||
1 => format_dms(measurement_deg, adec, azin),
|
||
// 2 = Gradians
|
||
2 => {
|
||
let g = measurement_deg / 0.9;
|
||
let raw = format!("{:.*}", adec, g);
|
||
format!("{}g", apply_angular_zero_suppression(&raw, azin))
|
||
}
|
||
// 3 = Radians
|
||
3 => {
|
||
let r = measurement_deg.to_radians();
|
||
let raw = format!("{:.*}", adec, r);
|
||
format!("{}r", apply_angular_zero_suppression(&raw, azin))
|
||
}
|
||
// 0 or unknown = Decimal Degrees
|
||
_ => {
|
||
let raw = format!("{:.*}", adec, measurement_deg);
|
||
format!("{}°", apply_angular_zero_suppression(&raw, azin))
|
||
}
|
||
}
|
||
}
|
||
|
||
fn format_dms(deg: f64, sec_dec: usize, azin: i16) -> String {
|
||
let sign = if deg < 0.0 { "-" } else { "" };
|
||
let abs = deg.abs();
|
||
let d = abs.floor();
|
||
let m_full = (abs - d) * 60.0;
|
||
let m = m_full.floor();
|
||
let s = (m_full - m) * 60.0;
|
||
let s_str = format!("{:.*}", sec_dec, s);
|
||
let mut out = format!("{}{:.0}°{:.0}'{}\"", sign, d, m, s_str);
|
||
if azin & 4 != 0 {
|
||
// suppress 0° / 0' parts
|
||
if d == 0.0 {
|
||
out = out.trim_start_matches('0').to_string();
|
||
out = out.replacen("°", "", 1);
|
||
}
|
||
}
|
||
out
|
||
}
|
||
|
||
/// Apply DIMZIN bit flags to a formatted linear value.
|
||
/// bit 0 (1) suppress 0' (imperial feet) — not applicable for decimal
|
||
/// bit 1 (2) suppress 0" (imperial inches) — not applicable for decimal
|
||
/// bit 2 (4) suppress leading zeros (e.g. ".5" not "0.5")
|
||
/// bit 3 (8) suppress trailing zeros (e.g. "1.5" not "1.50")
|
||
/// Default = 8 (trailing-zero suppression on).
|
||
fn apply_linear_zero_suppression(s: &str, zin: i16) -> String {
|
||
let mut out = s.to_string();
|
||
if zin & 8 != 0 {
|
||
out = strip_trailing_zeros(&out);
|
||
}
|
||
if zin & 4 != 0 {
|
||
out = strip_leading_zero(&out);
|
||
}
|
||
out
|
||
}
|
||
|
||
fn apply_angular_zero_suppression(s: &str, azin: i16) -> String {
|
||
// DIMAZIN: 0=neither, 1=leading, 2=trailing, 3=both.
|
||
let mut out = s.to_string();
|
||
if azin & 2 != 0 {
|
||
out = strip_trailing_zeros(&out);
|
||
}
|
||
if azin & 1 != 0 {
|
||
out = strip_leading_zero(&out);
|
||
}
|
||
out
|
||
}
|
||
|
||
fn strip_trailing_zeros(s: &str) -> String {
|
||
if !s.contains('.') {
|
||
return s.to_string();
|
||
}
|
||
let trimmed = s.trim_end_matches('0').trim_end_matches('.');
|
||
if trimmed.is_empty() || trimmed == "-" {
|
||
"0".to_string()
|
||
} else {
|
||
trimmed.to_string()
|
||
}
|
||
}
|
||
|
||
fn strip_leading_zero(s: &str) -> String {
|
||
// "0.5" → ".5", "-0.5" → "-.5", "0" stays.
|
||
if let Some(rest) = s.strip_prefix("-0.") {
|
||
return format!("-.{rest}");
|
||
}
|
||
if let Some(rest) = s.strip_prefix("0.") {
|
||
return format!(".{rest}");
|
||
}
|
||
s.to_string()
|
||
}
|
||
|
||
fn swap_decimal_sep(s: &str, dsep_code: i16) -> String {
|
||
// DIMDSEP holds an ASCII code (0 means default '.'). 46='.', 44=',', etc.
|
||
if dsep_code <= 0 || dsep_code == 46 {
|
||
return s.to_string();
|
||
}
|
||
let ch = char::from_u32(dsep_code as u32).unwrap_or('.');
|
||
s.replace('.', &ch.to_string())
|
||
}
|
||
|
||
fn dimension_text_position(dim: &Dimension, world_offset: [f64; 3]) -> Vec3 {
|
||
let lv = |v| vec3_local(v, world_offset);
|
||
let base = dim.base();
|
||
let pos = lv(base.text_middle_point);
|
||
if pos.length_squared() > 1e-8 {
|
||
return pos;
|
||
}
|
||
match dim {
|
||
Dimension::Aligned(d) => (lv(d.first_point) + lv(d.second_point)) * 0.5,
|
||
Dimension::Linear(d) => (lv(d.first_point) + lv(d.second_point)) * 0.5,
|
||
Dimension::Radius(d) => (lv(d.angle_vertex) + lv(d.definition_point)) * 0.5,
|
||
Dimension::Diameter(d) => (lv(d.angle_vertex) + lv(d.definition_point)) * 0.5,
|
||
Dimension::Angular2Ln(d) => lv(d.dimension_arc),
|
||
Dimension::Angular3Pt(d) => lv(d.definition_point),
|
||
Dimension::Ordinate(d) => lv(d.leader_endpoint),
|
||
}
|
||
}
|
||
|
||
fn vec3_local(v: Vector3, off: [f64; 3]) -> Vec3 {
|
||
Vec3::new(
|
||
(v.x - off[0]) as f32,
|
||
(v.y - off[1]) as f32,
|
||
(v.z - off[2]) as f32,
|
||
)
|
||
}
|
||
|
||
fn offset_snap_pts(pts: Vec<(Vec3, SnapHint)>, off: [f64; 3]) -> Vec<(Vec3, SnapHint)> {
|
||
let [ox, oy, oz] = off;
|
||
pts.into_iter()
|
||
.map(|(p, h)| {
|
||
(
|
||
Vec3::new(p.x - ox as f32, p.y - oy as f32, p.z - oz as f32),
|
||
h,
|
||
)
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
/// Returns the text position of a dimension in DXF world-space (f64, no offset applied).
|
||
/// Used when building a synthetic Text entity so tessellate() can apply world_offset itself.
|
||
/// When the saved `text_middle_point` is zero (i.e. AutoCAD never wrote one),
|
||
/// computes a fallback from the dim geometry and applies DIMTAD/DIMGAP.
|
||
fn dimension_text_pos_f64(
|
||
dim: &Dimension,
|
||
style: Option<&DimStyle>,
|
||
text_height: f64,
|
||
) -> Vector3 {
|
||
let base = dim.base();
|
||
let p = base.text_middle_point;
|
||
if p.x * p.x + p.y * p.y + p.z * p.z > 1e-16 {
|
||
return p;
|
||
}
|
||
let mid = match dim {
|
||
Dimension::Aligned(d) => Vector3::new(
|
||
(d.first_point.x + d.second_point.x) * 0.5,
|
||
(d.first_point.y + d.second_point.y) * 0.5,
|
||
(d.first_point.z + d.second_point.z) * 0.5,
|
||
),
|
||
Dimension::Linear(d) => Vector3::new(
|
||
(d.first_point.x + d.second_point.x) * 0.5,
|
||
(d.first_point.y + d.second_point.y) * 0.5,
|
||
(d.first_point.z + d.second_point.z) * 0.5,
|
||
),
|
||
Dimension::Radius(d) => Vector3::new(
|
||
(d.angle_vertex.x + d.definition_point.x) * 0.5,
|
||
(d.angle_vertex.y + d.definition_point.y) * 0.5,
|
||
(d.angle_vertex.z + d.definition_point.z) * 0.5,
|
||
),
|
||
Dimension::Diameter(d) => Vector3::new(
|
||
(d.angle_vertex.x + d.definition_point.x) * 0.5,
|
||
(d.angle_vertex.y + d.definition_point.y) * 0.5,
|
||
(d.angle_vertex.z + d.definition_point.z) * 0.5,
|
||
),
|
||
Dimension::Angular2Ln(d) => d.dimension_arc,
|
||
Dimension::Angular3Pt(d) => d.definition_point,
|
||
Dimension::Ordinate(d) => d.leader_endpoint,
|
||
};
|
||
|
||
// DIMTAD: 0=centred (on the line), 1=above (offset perpendicular), 2=outside,
|
||
// 3=JIS. We honour 0 and 1; 2/3 fall back to "above".
|
||
let dimtad = style.map(|s| s.dimtad).unwrap_or(1);
|
||
let dimgap = style.map(|s| s.dimgap).unwrap_or(0.0);
|
||
// DIMJUST horizontal placement on the dim line (only meaningful for
|
||
// linear/aligned dims). 0=centred, 1=near first ext, 2=near second ext,
|
||
// 3=above first ext (perpendicular text), 4=above second ext.
|
||
let dimjust = style.map(|s| s.dimjust).unwrap_or(0);
|
||
// DIMTVP vertical-position multiplier (units of dimtxt). Only honoured
|
||
// when DIMTAD == 0; offsets text perpendicular to the dim line.
|
||
let dimtvp = style.map(|s| s.dimtvp).unwrap_or(0.0);
|
||
|
||
// Need axis + perp_sign (toward "above").
|
||
let (axis_x, axis_y, perp_sign, p1, p2) = match dim {
|
||
Dimension::Linear(d) => {
|
||
let ax = d.rotation.cos();
|
||
let ay = d.rotation.sin();
|
||
let px = -ay;
|
||
let py = ax;
|
||
let off = (d.definition_point.x - d.first_point.x) * px
|
||
+ (d.definition_point.y - d.first_point.y) * py;
|
||
(
|
||
ax,
|
||
ay,
|
||
if off >= 0.0 { 1.0 } else { -1.0 },
|
||
d.first_point,
|
||
d.second_point,
|
||
)
|
||
}
|
||
Dimension::Aligned(d) => {
|
||
let dx = d.second_point.x - d.first_point.x;
|
||
let dy = d.second_point.y - d.first_point.y;
|
||
let len = (dx * dx + dy * dy).sqrt().max(1e-12);
|
||
let ax = dx / len;
|
||
let ay = dy / len;
|
||
let px = -ay;
|
||
let py = ax;
|
||
let off = (d.definition_point.x - d.first_point.x) * px
|
||
+ (d.definition_point.y - d.first_point.y) * py;
|
||
(
|
||
ax,
|
||
ay,
|
||
if off >= 0.0 { 1.0 } else { -1.0 },
|
||
d.first_point,
|
||
d.second_point,
|
||
)
|
||
}
|
||
_ => {
|
||
// Non-linear: only DIMTAD offset applies; no horizontal shift along axis.
|
||
let off_perp = if dimtad == 0 {
|
||
dimtvp * text_height
|
||
} else {
|
||
text_height * 0.5 + dimgap
|
||
};
|
||
return Vector3::new(mid.x, mid.y + off_perp * perp_sign_default(), mid.z);
|
||
}
|
||
};
|
||
|
||
// Horizontal slide along the dim axis to honour DIMJUST. Slide endpoints
|
||
// are the dim-line endpoints (projection of p1/p2 onto the dim line),
|
||
// approximated here as the def-points themselves (we don't have axis-
|
||
// projected d1/d2 here without more plumbing).
|
||
let along_offset = match dimjust {
|
||
1 => (p1.x - mid.x) * axis_x + (p1.y - mid.y) * axis_y,
|
||
2 => (p2.x - mid.x) * axis_x + (p2.y - mid.y) * axis_y,
|
||
3 => (p1.x - mid.x) * axis_x + (p1.y - mid.y) * axis_y,
|
||
4 => (p2.x - mid.x) * axis_x + (p2.y - mid.y) * axis_y,
|
||
_ => 0.0,
|
||
};
|
||
|
||
// Perpendicular offset: DIMTAD 0 → DIMTVP * dimtxt, else above-line gap.
|
||
let perp_offset = if dimtad == 0 {
|
||
dimtvp * text_height * perp_sign
|
||
} else {
|
||
(text_height * 0.5 + dimgap) * perp_sign
|
||
};
|
||
|
||
Vector3::new(
|
||
mid.x + axis_x * along_offset + (-axis_y) * perp_offset,
|
||
mid.y + axis_y * along_offset + (axis_x) * perp_offset,
|
||
mid.z,
|
||
)
|
||
}
|
||
|
||
fn perp_sign_default() -> f64 {
|
||
1.0
|
||
}
|
||
|
||
fn normalized_or(v: Vec3, fallback: Vec3) -> Vec3 {
|
||
if v.length_squared() <= 1e-12 {
|
||
fallback
|
||
} else {
|
||
v.normalize()
|
||
}
|
||
}
|
||
|