1089 lines
40 KiB
Rust
1089 lines
40 KiB
Rust
use acadrust::entities::{LwPolyline, LwVertex};
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use crate::t;
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use crate::command::EntityTransform;
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use crate::entities::common::{
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edit_prop as edit, parse_f64, rectangle_grip, ro_prop as ro, square_grip,
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stepper_prop as stepper,
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};
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use crate::entities::traits::RenderConvertible;
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use crate::scene::convert::acad_to_render::{extrusion_wall_tris, RenderEntity, RenderObject};
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use crate::scene::model::object::{GripApply, GripDef, PropSection, PropValue, Property};
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use crate::scene::model::wire_model::TangentGeom;
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const TAU: f64 = std::f64::consts::TAU;
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/// Midpoint position on an arc segment defined by its bulge.
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fn arc_midpoint(p0: [f64; 2], p1: [f64; 2], bulge: f64) -> [f64; 2] {
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match crate::entities::common::BulgeArc::from_bulge(p0, p1, bulge) {
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Some(arc) => arc.sample(0.5),
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None => [(p0[0] + p1[0]) * 0.5, (p0[1] + p1[1]) * 0.5],
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}
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}
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/// Compute the DXF bulge for an arc that passes through p0, mid_pt, and p1.
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/// Returns None when the three points are collinear (straight segment).
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///
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/// The sign and sweep follow the p0 → mid → p1 traversal orientation, which
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/// keeps it the exact inverse of `BulgeArc::from_bulge` + `sample(0.5)` (a
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/// CCW traversal = positive bulge). It used to key off which chord side the
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/// midpoint lies on — the opposite convention — so every grip-drag frame
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/// flipped the arc to the other side and the radius jumped wildly instead of
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/// following the cursor (#339).
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fn bulge_from_midpoint(p0: [f64; 2], p1: [f64; 2], mid: [f64; 2]) -> Option<f64> {
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// Circumcircle of (p0, mid, p1)
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let ax = 2.0 * (mid[0] - p0[0]);
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let ay = 2.0 * (mid[1] - p0[1]);
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let bx = 2.0 * (p1[0] - p0[0]);
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let by = 2.0 * (p1[1] - p0[1]);
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let ca = mid[0] * mid[0] + mid[1] * mid[1] - p0[0] * p0[0] - p0[1] * p0[1];
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let cb = p1[0] * p1[0] + p1[1] * p1[1] - p0[0] * p0[0] - p0[1] * p0[1];
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let det = ax * by - ay * bx;
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if det.abs() < 1e-12 {
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return None; // collinear
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}
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let cx = (ca * by - cb * ay) / det;
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let cy = (ax * cb - bx * ca) / det;
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let a0 = (p0[1] - cy).atan2(p0[0] - cx);
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let a1 = (p1[1] - cy).atan2(p1[0] - cx);
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// Arc direction = orientation of the p0 → mid → p1 turn.
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let cross =
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(mid[0] - p0[0]) * (p1[1] - mid[1]) - (mid[1] - p0[1]) * (p1[0] - mid[0]);
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if cross == 0.0 {
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return None;
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}
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// Central angle measured along that direction, in (0, TAU).
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let sweep = if cross > 0.0 {
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(a1 - a0).rem_euclid(TAU)
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} else {
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(a0 - a1).rem_euclid(TAU)
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};
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let bulge = (sweep / 4.0).tan();
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Some(if cross > 0.0 { bulge } else { -bulge })
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}
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/// Bulges for the two consecutive arcs `p0 → mid` and `mid → p1` on the
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/// circle through all three points. Used while placing a vertex inserted into
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/// an arc segment so both halves keep meeting at the cursor.
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fn split_bulges_from_point(
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p0: [f64; 2],
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mid: [f64; 2],
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p1: [f64; 2],
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original_bulge: f64,
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) -> (f64, f64) {
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let d0 = (mid[0] - p0[0]).hypot(mid[1] - p0[1]);
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let d1 = (p1[0] - mid[0]).hypot(p1[1] - mid[1]);
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if d0 < 1e-12 {
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return (0.0, original_bulge);
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}
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if d1 < 1e-12 {
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return (original_bulge, 0.0);
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}
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let ax = 2.0 * (mid[0] - p0[0]);
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let ay = 2.0 * (mid[1] - p0[1]);
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let bx = 2.0 * (p1[0] - p0[0]);
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let by = 2.0 * (p1[1] - p0[1]);
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let ca = mid[0] * mid[0] + mid[1] * mid[1] - p0[0] * p0[0] - p0[1] * p0[1];
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let cb = p1[0] * p1[0] + p1[1] * p1[1] - p0[0] * p0[0] - p0[1] * p0[1];
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let det = ax * by - ay * bx;
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if det.abs() < 1e-12 {
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return (0.0, 0.0);
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}
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let cx = (ca * by - cb * ay) / det;
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let cy = (ax * cb - bx * ca) / det;
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let a0 = (p0[1] - cy).atan2(p0[0] - cx);
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let am = (mid[1] - cy).atan2(mid[0] - cx);
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let a1 = (p1[1] - cy).atan2(p1[0] - cx);
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let cross =
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(mid[0] - p0[0]) * (p1[1] - mid[1]) - (mid[1] - p0[1]) * (p1[0] - mid[0]);
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let bulge = |from: f64, to: f64| {
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if cross > 0.0 {
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((to - from).rem_euclid(TAU) / 4.0).tan()
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} else {
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-((from - to).rem_euclid(TAU) / 4.0).tan()
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}
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};
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(bulge(a0, am), bulge(am, a1))
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}
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/// Refit the two arc segments around a newly inserted vertex. The caller
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/// ensures this placement originated from an arc, so straight-segment Add
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/// Vertex remains two straight segments when the cursor moves off the chord.
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pub(crate) fn refit_added_arc_vertex(
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entity: &mut acadrust::EntityType,
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vertex_id: usize,
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original_bulge: f64,
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) {
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match entity {
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acadrust::EntityType::LwPolyline(polyline) => {
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let n = polyline.vertices.len();
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if vertex_id == 0 || vertex_id >= n {
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return;
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}
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let next = if vertex_id + 1 < n {
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vertex_id + 1
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} else if polyline.is_closed {
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0
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} else {
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return;
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};
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let prev = vertex_id - 1;
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let p0 = polyline.vertices[prev].location;
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let mid = polyline.vertices[vertex_id].location;
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let p1 = polyline.vertices[next].location;
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let (first, second) = split_bulges_from_point(
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[p0.x, p0.y],
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[mid.x, mid.y],
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[p1.x, p1.y],
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original_bulge,
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);
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polyline.vertices[prev].bulge = first.clamp(-1e6, 1e6);
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polyline.vertices[vertex_id].bulge = second.clamp(-1e6, 1e6);
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}
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acadrust::EntityType::Polyline2D(polyline) => {
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let n = polyline.vertices.len();
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if vertex_id == 0 || vertex_id >= n {
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return;
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}
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let next = if vertex_id + 1 < n {
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vertex_id + 1
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} else if polyline.is_closed() {
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0
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} else {
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return;
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};
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let prev = vertex_id - 1;
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let p0 = &polyline.vertices[prev].location;
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let mid = &polyline.vertices[vertex_id].location;
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let p1 = &polyline.vertices[next].location;
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let (first, second) = split_bulges_from_point(
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[p0.x, p0.y],
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[mid.x, mid.y],
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[p1.x, p1.y],
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original_bulge,
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);
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polyline.vertices[prev].bulge = first.clamp(-1e6, 1e6);
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polyline.vertices[vertex_id].bulge = second.clamp(-1e6, 1e6);
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}
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_ => {}
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}
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}
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/// Tessellate a thick polyline segment list into NaN-separated Lines geometry.
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/// Shared by LwPolyline and Polyline2D thickness paths.
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fn thick_segments(
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seg_data: &[(f64, f64, f64, f64)], // (x0, y0, x1, y1) per seg — or use run of (x,y,bulge)
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path_pts: &[[f64; 3]],
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thickness: f64,
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normal: (f64, f64, f64),
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key_verts: Vec<[f64; 3]>,
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tangents: Vec<TangentGeom>,
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) -> RenderEntity {
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let (nx, ny, nz) = normal;
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let t = thickness;
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let off = |p: [f64; 3]| -> [f64; 3] { [p[0] + t * nx, p[1] + t * ny, p[2] + t * nz] };
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let mut pts: Vec<[f64; 3]> = Vec::with_capacity(path_pts.len() * 2 + seg_data.len() * 3 + 4);
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// Bottom path
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pts.extend_from_slice(path_pts);
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pts.push([f64::NAN; 3]);
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// Top path
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for &p in path_pts {
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pts.push(off(p));
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}
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// Walls at each vertex (seg_data.0/.1 = start x/y of each seg, last seg appends its end too)
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if !seg_data.is_empty() {
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pts.push([f64::NAN; 3]);
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for (k, &(x0, y0, _x1, _y1)) in seg_data.iter().enumerate() {
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let pb = key_verts[k];
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let _ = (x0, y0); // key_verts already has correct WCS
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pts.push(pb);
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pts.push(off(pb));
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if k + 1 < seg_data.len() {
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pts.push([f64::NAN; 3]);
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}
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}
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// Last wall at the final vertex
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if let Some(&last) = key_verts.last() {
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pts.push([f64::NAN; 3]);
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pts.push(last);
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pts.push(off(last));
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}
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}
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RenderEntity {
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pick_tris: extrusion_wall_tris(path_pts, [t * nx, t * ny, t * nz]),
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object: RenderObject::Lines(pts),
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snap_pts: vec![],
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tangent_geoms: tangents,
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key_vertices: key_verts,
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fill_tris: vec![],
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}
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}
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/// Extrude a *wide* LwPolyline's band into a 3-D tube: each band segment's outer
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/// and inner boundary rises by `thickness` (along the normal) into a wall,
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/// leaving the two radial segment-end edges open (they are internal to the
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/// band). The flat bottom band is already drawn by the wide-fill path; this
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/// adds the vertical walls and their outline. Used instead of `thick_segments`
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/// (which extrudes only the centreline) when the polyline carries a width.
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fn thick_wide_band(
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pl: &LwPolyline,
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thickness: f64,
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to_wcs: &dyn Fn(f64, f64) -> (f64, f64, f64),
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normal: (f64, f64, f64),
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key_verts: Vec<[f64; 3]>,
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tangents: Vec<TangentGeom>,
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) -> RenderEntity {
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let (origin, fills) = wide_fills(pl);
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let (fill_tris, lines) =
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crate::entities::common::thick_band_tube(origin, &fills, thickness, normal, to_wcs);
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RenderEntity {
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pick_tris: fill_tris.clone(),
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object: RenderObject::Lines(lines),
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snap_pts: vec![],
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tangent_geoms: tangents,
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key_vertices: key_verts,
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fill_tris,
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}
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}
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fn to_render(pline: &LwPolyline) -> RenderEntity {
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let verts = &pline.vertices;
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if verts.is_empty() {
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return RenderEntity {
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pick_tris: Vec::new(),
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object: RenderObject::Lines(Vec::new()),
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snap_pts: vec![],
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tangent_geoms: vec![],
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key_vertices: vec![],
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fill_tris: vec![],
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};
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}
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let elev = pline.elevation;
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let normal = (pline.normal.x, pline.normal.y, pline.normal.z);
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let count = verts.len();
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let seg_count = if pline.is_closed { count } else { count - 1 };
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let mut tangents: Vec<TangentGeom> = Vec::new();
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let mut key_verts: Vec<[f64; 3]> = Vec::new();
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// Convert OCS (x, y, elevation) to a WCS point.
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let to_wcs = |x: f64, y: f64| -> (f64, f64, f64) {
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crate::scene::view::transform::ocs_point_to_wcs((x, y, elev), normal)
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};
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let to_pt = |v: &LwVertex| -> [f64; 3] {
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let (wx, wy, wz) = to_wcs(v.location.x, v.location.y);
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[wx, wy, wz]
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};
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if pline.thickness.abs() > 1e-10 {
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let mut path: Vec<[f64; 3]> = Vec::new();
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let mut kv: Vec<[f64; 3]> = Vec::new();
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let mut tgs: Vec<TangentGeom> = Vec::new();
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let mut seg_data: Vec<(f64, f64, f64, f64)> = Vec::new();
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// First vertex
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let (w0x, w0y, w0z) = to_wcs(verts[0].location.x, verts[0].location.y);
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path.push([w0x, w0y, w0z]);
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kv.push([w0x, w0y, w0z]);
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for i in 0..seg_count {
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let va = &verts[i];
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let vb = &verts[(i + 1) % count];
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let (ox0, oy0) = (va.location.x, va.location.y);
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let (ox1, oy1) = (vb.location.x, vb.location.y);
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let bulge = va.bulge;
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if bulge.abs() < 1e-9 {
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let (wx, wy, wz) = to_wcs(ox1, oy1);
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path.push([wx, wy, wz]);
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let p1_pt = path[path.len() - 2];
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let p2_pt = *path.last().unwrap();
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tgs.push(TangentGeom::Line {
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p1: [p1_pt[0] as f32, p1_pt[1] as f32, p1_pt[2] as f32],
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p2: [p2_pt[0] as f32, p2_pt[1] as f32, p2_pt[2] as f32],
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});
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} else if let Some(arc) =
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crate::entities::common::BulgeArc::from_bulge([ox0, oy0], [ox1, oy1], bulge)
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{
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let (wcx, wcy, wcz) = to_wcs(arc.center[0], arc.center[1]);
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tgs.push(TangentGeom::Circle {
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center: [wcx as f32, wcy as f32, wcz as f32],
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radius: arc.radius as f32,
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});
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for s in arc
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.tessellate_angle(cadkernel::tessellation::DEFAULT_ANGLE)
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.into_iter()
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.skip(1)
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{
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let (wx, wy, wz) = to_wcs(s[0], s[1]);
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path.push([wx, wy, wz]);
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}
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}
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let (wbx, wby, wbz) = to_wcs(ox1, oy1);
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kv.push([wbx, wby, wbz]);
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seg_data.push((ox0, oy0, ox1, oy1));
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}
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// A wide polyline extrudes its whole band into a tube (outer + inner
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// walls); a zero-width one just extrudes its centreline.
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let is_wide = pline.constant_width > 1e-9
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|| pline
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.vertices
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.iter()
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.any(|v| v.start_width > 1e-9 || v.end_width > 1e-9);
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if is_wide {
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return thick_wide_band(pline, pline.thickness, &to_wcs, normal, kv, tgs);
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}
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return thick_segments(&seg_data, &path, pline.thickness, normal, kv, tgs);
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}
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// A wide polyline whose per-vertex widths VARY renders a smooth taper —
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// handled here, before the PLINEGEN split, so both cases get it. A
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// uniform-width polyline falls through to the constant-band paths below.
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if let Some(band_verts) = tapered_band_verts(pline) {
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let mut kv: Vec<[f64; 3]> = Vec::new();
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let mut tgs: Vec<TangentGeom> = Vec::new();
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for i in 0..seg_count {
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let v0 = &verts[i];
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let v1 = &verts[(i + 1) % count];
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let p0 = to_pt(v0);
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let p1 = to_pt(v1);
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if i == 0 {
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kv.push([p0[0], p0[1], p0[2]]);
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}
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kv.push([p1[0], p1[1], p1[2]]);
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if v0.bulge.abs() < 1e-9 {
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tgs.push(TangentGeom::Line {
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p1: [p0[0] as f32, p0[1] as f32, p0[2] as f32],
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p2: [p1[0] as f32, p1[1] as f32, p1[2] as f32],
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});
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} else if let Some(arc) = crate::entities::common::BulgeArc::from_bulge(
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[v0.location.x, v0.location.y],
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[v1.location.x, v1.location.y],
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v0.bulge,
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) {
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let (wcx, wcy, wcz) = to_wcs(arc.center[0], arc.center[1]);
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tgs.push(TangentGeom::Circle {
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center: [wcx as f32, wcy as f32, wcz as f32],
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radius: arc.radius as f32,
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});
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}
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}
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let (pts, widths) =
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crate::entities::common::tapered_band_points(&band_verts, pline.is_closed, &to_wcs);
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let (fill_origin, fills) = wide_fills(pline);
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return RenderEntity {
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pick_tris: crate::entities::common::wide_band_tris(fill_origin, &fills),
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object: RenderObject::TaperedLines(pts, widths),
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snap_pts: vec![],
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tangent_geoms: tgs,
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key_vertices: kv,
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fill_tris: vec![],
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};
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}
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// plinegen=false: NaN-separated segments so the linetype pattern restarts per vertex.
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if !pline.plinegen {
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let mut pts: Vec<[f64; 3]> = Vec::new();
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let mut tgs: Vec<TangentGeom> = Vec::new();
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let mut kv: Vec<[f64; 3]> = Vec::new();
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let to_f32 = |p: [f64; 3]| -> [f32; 3] { [p[0] as f32, p[1] as f32, p[2] as f32] };
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for i in 0..seg_count {
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let va = &verts[i];
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let vb = &verts[(i + 1) % count];
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let (ox0, oy0) = (va.location.x, va.location.y);
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let (ox1, oy1) = (vb.location.x, vb.location.y);
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let bulge = va.bulge;
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let (wx0, wy0, wz0) = to_wcs(ox0, oy0);
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let p_start = [wx0, wy0, wz0];
|
||
pts.push(p_start);
|
||
if i == 0 {
|
||
kv.push(p_start);
|
||
}
|
||
if bulge.abs() < 1e-9 {
|
||
let (wx1, wy1, wz1) = to_wcs(ox1, oy1);
|
||
let p_end = [wx1, wy1, wz1];
|
||
pts.push(p_end);
|
||
kv.push(p_end);
|
||
tgs.push(TangentGeom::Line {
|
||
p1: to_f32(p_start),
|
||
p2: to_f32(p_end),
|
||
});
|
||
} else if let Some(arc) =
|
||
crate::entities::common::BulgeArc::from_bulge([ox0, oy0], [ox1, oy1], bulge)
|
||
{
|
||
for s in arc
|
||
.tessellate_angle(cadkernel::tessellation::DEFAULT_ANGLE)
|
||
.into_iter()
|
||
.skip(1)
|
||
{
|
||
let (wx, wy, wz) = to_wcs(s[0], s[1]);
|
||
pts.push([wx, wy, wz]);
|
||
}
|
||
let (wx1, wy1, wz1) = to_wcs(ox1, oy1);
|
||
kv.push([wx1, wy1, wz1]);
|
||
let (wcx, wcy, wcz) = to_wcs(arc.center[0], arc.center[1]);
|
||
tgs.push(TangentGeom::Circle {
|
||
center: [wcx as f32, wcy as f32, wcz as f32],
|
||
radius: arc.radius as f32,
|
||
});
|
||
}
|
||
if i + 1 < seg_count {
|
||
pts.push([f64::NAN; 3]);
|
||
}
|
||
}
|
||
let (fill_origin, fills) = wide_fills(pline);
|
||
return RenderEntity {
|
||
pick_tris: crate::entities::common::wide_band_tris(fill_origin, &fills),
|
||
object: RenderObject::SegmentedLines(pts),
|
||
snap_pts: vec![],
|
||
tangent_geoms: tgs,
|
||
key_vertices: kv,
|
||
fill_tris: vec![],
|
||
};
|
||
}
|
||
|
||
for i in 0..seg_count {
|
||
let v0 = &verts[i];
|
||
let v1 = &verts[(i + 1) % count];
|
||
let p0 = to_pt(v0);
|
||
let p1 = to_pt(v1);
|
||
let bulge = v0.bulge;
|
||
|
||
if bulge.abs() < 1e-9 {
|
||
tangents.push(TangentGeom::Line {
|
||
p1: [p0[0] as f32, p0[1] as f32, p0[2] as f32],
|
||
p2: [p1[0] as f32, p1[1] as f32, p1[2] as f32],
|
||
});
|
||
} else if let Some(arc) = crate::entities::common::BulgeArc::from_bulge(
|
||
[v0.location.x, v0.location.y],
|
||
[v1.location.x, v1.location.y],
|
||
bulge as f64,
|
||
) {
|
||
let (wcx, wcy, wcz) = to_wcs(arc.center[0], arc.center[1]);
|
||
tangents.push(TangentGeom::Circle {
|
||
center: [wcx as f32, wcy as f32, wcz as f32],
|
||
radius: arc.radius as f32,
|
||
});
|
||
}
|
||
|
||
if i == 0 {
|
||
key_verts.push([p0[0], p0[1], p0[2]]);
|
||
}
|
||
key_verts.push([p1[0], p1[1], p1[2]]);
|
||
}
|
||
|
||
let (fill_origin, fills) = wide_fills(pline);
|
||
RenderEntity {
|
||
pick_tris: crate::entities::common::wide_band_tris(fill_origin, &fills),
|
||
// Sampled through the polyline's own curve, so a bulge stays an
|
||
// arc rather than becoming the chord across it.
|
||
object: RenderObject::Lines(
|
||
crate::entities::curve::lwpolyline_curve(pline)
|
||
.map(|planar| crate::entities::curve::curve_points(&planar))
|
||
.unwrap_or_default(),
|
||
),
|
||
snap_pts: vec![],
|
||
tangent_geoms: tangents,
|
||
key_vertices: key_verts,
|
||
fill_tris: vec![],
|
||
}
|
||
}
|
||
|
||
/// The per-vertex `(location, bulge, start_width, end_width)` band description
|
||
/// for a wide LwPolyline whose width VARIES — `None` when the width is uniform
|
||
/// (a constant band) so the caller keeps the cheaper constant-width path.
|
||
fn tapered_band_verts(pline: &LwPolyline) -> Option<Vec<([f64; 2], f64, f64, f64)>> {
|
||
let c = pline.constant_width;
|
||
let band: Vec<([f64; 2], f64, f64, f64)> = pline
|
||
.vertices
|
||
.iter()
|
||
.map(|v| {
|
||
let sw = if v.start_width > 1e-9 { v.start_width } else { c };
|
||
let ew = if v.end_width > 1e-9 { v.end_width } else { c };
|
||
([v.location.x, v.location.y], v.bulge, sw, ew)
|
||
})
|
||
.collect();
|
||
let w0 = band.first().map_or(0.0, |v| v.2);
|
||
let varies = band
|
||
.iter()
|
||
.any(|&(_, _, sw, ew)| (sw - w0).abs() > 1e-9 || (ew - w0).abs() > 1e-9);
|
||
// Only a genuine, non-zero-width taper takes the per-point path.
|
||
if varies && w0.max(band.iter().map(|v| v.3).fold(0.0, f64::max)) > 1e-9 {
|
||
Some(band)
|
||
} else {
|
||
None
|
||
}
|
||
}
|
||
|
||
/// Split at vertex `idx`: a closed polyline re-opens there (one piece); an
|
||
/// open one splits into two (interior vertices only). `None` when invalid.
|
||
pub(crate) fn break_at_vertex(
|
||
p: &acadrust::LwPolyline,
|
||
idx: usize,
|
||
) -> Option<Vec<acadrust::EntityType>> {
|
||
use acadrust::EntityType;
|
||
let n = p.vertices.len();
|
||
if n < 3 || idx >= n {
|
||
return None;
|
||
}
|
||
if p.is_closed {
|
||
let mut verts = Vec::with_capacity(n + 1);
|
||
verts.extend_from_slice(&p.vertices[idx..]);
|
||
verts.extend_from_slice(&p.vertices[..=idx]);
|
||
let mut out = p.clone();
|
||
out.common.handle = acadrust::Handle::NULL;
|
||
out.is_closed = false;
|
||
out.vertices = verts;
|
||
return Some(vec![EntityType::LwPolyline(out)]);
|
||
}
|
||
if idx == 0 || idx == n - 1 {
|
||
return None;
|
||
}
|
||
let mut a = p.clone();
|
||
a.common.handle = acadrust::Handle::NULL;
|
||
a.vertices = p.vertices[..=idx].to_vec();
|
||
if let Some(last) = a.vertices.last_mut() {
|
||
last.bulge = 0.0;
|
||
}
|
||
let mut b = p.clone();
|
||
b.common.handle = acadrust::Handle::NULL;
|
||
b.vertices = p.vertices[idx..].to_vec();
|
||
Some(vec![EntityType::LwPolyline(a), EntityType::LwPolyline(b)])
|
||
}
|
||
|
||
fn grips(pline: &LwPolyline) -> Vec<GripDef> {
|
||
let elev = pline.elevation;
|
||
let n = pline.vertices.len();
|
||
let seg_count = if pline.is_closed {
|
||
n
|
||
} else {
|
||
n.saturating_sub(1)
|
||
};
|
||
|
||
let mut out: Vec<GripDef> = pline
|
||
.vertices
|
||
.iter()
|
||
.enumerate()
|
||
.map(|(i, v)| square_grip(i, glam::DVec3::new(v.location.x, v.location.y, elev)))
|
||
.collect();
|
||
|
||
// One mid-segment stretch grip per segment (straight or arc). The
|
||
// marker is a small box rotated along the chord direction so the
|
||
// shape itself signals which way the segment runs.
|
||
for i in 0..seg_count {
|
||
let v0 = &pline.vertices[i];
|
||
let v1 = &pline.vertices[(i + 1) % n];
|
||
let (mx, my) = if v0.bulge.abs() < 1e-9 {
|
||
(
|
||
(v0.location.x + v1.location.x) * 0.5,
|
||
(v0.location.y + v1.location.y) * 0.5,
|
||
)
|
||
} else {
|
||
let m = arc_midpoint(
|
||
[v0.location.x, v0.location.y],
|
||
[v1.location.x, v1.location.y],
|
||
v0.bulge,
|
||
);
|
||
(m[0], m[1])
|
||
};
|
||
let dx = (v1.location.x - v0.location.x) as f32;
|
||
let dy = (v1.location.y - v0.location.y) as f32;
|
||
let mut g = rectangle_grip(n + i, glam::DVec3::new(mx, my, elev), [dx, dy]);
|
||
// An arc's mid grip re-fits the arc THROUGH the cursor, so it must
|
||
// drag in Absolute mode; only a straight segment's grip translates.
|
||
// Feeding per-frame Translate deltas through the recomputed arc
|
||
// midpoint deadlocks the moment the cursor crosses the chord (#339).
|
||
g.is_midpoint = v0.bulge.abs() < 1e-9;
|
||
out.push(g);
|
||
}
|
||
out
|
||
}
|
||
|
||
fn properties(pline: &LwPolyline) -> Vec<PropSection> {
|
||
let n = pline.vertices.len();
|
||
// The panel's Current Vertex focus, clamped to this polyline's range.
|
||
let vi = if n == 0 {
|
||
0
|
||
} else {
|
||
crate::scene::view::dispatch::prop_current_vertex().min(n - 1)
|
||
};
|
||
let v = pline.vertices.get(vi);
|
||
let vx = v.map_or(0.0, |v| v.location.x);
|
||
let vy = v.map_or(0.0, |v| v.location.y);
|
||
let start_w = v.map_or(0.0, |v| v.start_width);
|
||
let end_w = v.map_or(0.0, |v| v.end_width);
|
||
let mp = <LwPolyline as crate::entities::traits::MassPropsCalc>::mass_props(pline);
|
||
let vertex_label = if n == 0 {
|
||
"—".to_string()
|
||
} else {
|
||
format!("{} / {}", vi + 1, n)
|
||
};
|
||
vec![
|
||
PropSection {
|
||
title: t!("Geometry").into_owned(),
|
||
props: vec![
|
||
stepper(t!("Current Vertex").as_ref(), "current_vertex", vertex_label),
|
||
edit(t!("Vertex X").as_ref(), "vertex_x", vx),
|
||
edit(t!("Vertex Y").as_ref(), "vertex_y", vy),
|
||
edit(t!("Start segment width").as_ref(), "start_width", start_w),
|
||
edit(t!("End segment width").as_ref(), "end_width", end_w),
|
||
edit(t!("Global width").as_ref(), "global_width", pline.constant_width),
|
||
edit(t!("Elevation").as_ref(), "elevation", pline.elevation),
|
||
ro(t!("Area").as_ref(), "area", format!("{:.4}", mp.area)),
|
||
ro(t!("Length").as_ref(), "length", format!("{:.4}", mp.perimeter)),
|
||
],
|
||
},
|
||
PropSection {
|
||
title: t!("Misc").into_owned(),
|
||
props: vec![
|
||
Property {
|
||
label: t!("Closed").into_owned(),
|
||
field: "closed",
|
||
value: PropValue::BoolToggle {
|
||
field: "closed",
|
||
value: pline.is_closed,
|
||
},
|
||
},
|
||
Property {
|
||
label: t!("Linetype generation").into_owned(),
|
||
field: "plinegen",
|
||
value: PropValue::BoolToggle {
|
||
field: "plinegen",
|
||
value: pline.plinegen,
|
||
},
|
||
},
|
||
],
|
||
},
|
||
]
|
||
}
|
||
|
||
fn apply_geom_prop(pline: &mut LwPolyline, field: &str, value: &str) {
|
||
match field {
|
||
"closed" => {
|
||
pline.is_closed = if value == "toggle" {
|
||
!pline.is_closed
|
||
} else {
|
||
value == "true"
|
||
};
|
||
// Closing a polyline whose last vertex already sits on the first
|
||
// would stack two control points there (a polyline drawn back to
|
||
// its start point and then closed) — drop the duplicate so the
|
||
// closing segment replaces it (#421).
|
||
if pline.is_closed && pline.vertices.len() > 2 {
|
||
let (first, last) = (&pline.vertices[0], pline.vertices.last().unwrap());
|
||
let d2 = (first.location.x - last.location.x).powi(2)
|
||
+ (first.location.y - last.location.y).powi(2);
|
||
if d2 < 1e-12 {
|
||
pline.vertices.pop();
|
||
}
|
||
}
|
||
return;
|
||
}
|
||
"plinegen" => {
|
||
pline.plinegen = if value == "toggle" {
|
||
!pline.plinegen
|
||
} else {
|
||
value == "true"
|
||
};
|
||
return;
|
||
}
|
||
_ => {}
|
||
}
|
||
let Some(v) = parse_f64(value) else {
|
||
return;
|
||
};
|
||
// Per-vertex edits target the vertex the panel is focused on.
|
||
let n = pline.vertices.len();
|
||
let vi = if n == 0 {
|
||
0
|
||
} else {
|
||
crate::scene::view::dispatch::prop_current_vertex().min(n - 1)
|
||
};
|
||
match field {
|
||
"elevation" => pline.elevation = v,
|
||
"global_width" => pline.constant_width = v,
|
||
"vertex_x" => {
|
||
if let Some(vtx) = pline.vertices.get_mut(vi) {
|
||
vtx.location.x = v;
|
||
}
|
||
}
|
||
"vertex_y" => {
|
||
if let Some(vtx) = pline.vertices.get_mut(vi) {
|
||
vtx.location.y = v;
|
||
}
|
||
}
|
||
"start_width" => {
|
||
if let Some(vtx) = pline.vertices.get_mut(vi) {
|
||
vtx.start_width = v;
|
||
}
|
||
}
|
||
"end_width" => {
|
||
if let Some(vtx) = pline.vertices.get_mut(vi) {
|
||
vtx.end_width = v;
|
||
}
|
||
}
|
||
_ => {}
|
||
}
|
||
}
|
||
|
||
fn apply_grip(pline: &mut LwPolyline, grip_id: usize, apply: GripApply) {
|
||
let n = pline.vertices.len();
|
||
if grip_id < n {
|
||
// Vertex position grip
|
||
let v = &mut pline.vertices[grip_id];
|
||
match apply {
|
||
GripApply::Absolute(p) => {
|
||
v.location.x = p.x as f64;
|
||
v.location.y = p.y as f64;
|
||
}
|
||
GripApply::Translate(d) => {
|
||
v.location.x += d.x as f64;
|
||
v.location.y += d.y as f64;
|
||
}
|
||
}
|
||
} else {
|
||
// Mid-segment stretch grip for segment (grip_id - n).
|
||
// Straight segments translate both endpoints by the drag delta
|
||
// (the shared vertices then carry along whichever adjacent
|
||
// segments share them). Arc segments adjust their bulge from
|
||
// the new midpoint position.
|
||
let seg = grip_id - n;
|
||
let count = if pline.is_closed {
|
||
n
|
||
} else {
|
||
n.saturating_sub(1)
|
||
};
|
||
if seg >= count {
|
||
return;
|
||
}
|
||
let i0 = seg;
|
||
let i1 = (seg + 1) % n;
|
||
let is_arc = pline.vertices[i0].bulge.abs() >= 1e-9;
|
||
if !is_arc {
|
||
let d = match apply {
|
||
GripApply::Translate(d) => [d.x as f64, d.y as f64],
|
||
GripApply::Absolute(p) => {
|
||
let old_mid = (
|
||
(pline.vertices[i0].location.x + pline.vertices[i1].location.x) * 0.5,
|
||
(pline.vertices[i0].location.y + pline.vertices[i1].location.y) * 0.5,
|
||
);
|
||
[p.x as f64 - old_mid.0, p.y as f64 - old_mid.1]
|
||
}
|
||
};
|
||
pline.vertices[i0].location.x += d[0];
|
||
pline.vertices[i0].location.y += d[1];
|
||
pline.vertices[i1].location.x += d[0];
|
||
pline.vertices[i1].location.y += d[1];
|
||
return;
|
||
}
|
||
let new_mid: [f64; 2] = match apply {
|
||
GripApply::Absolute(p) => [p.x as f64, p.y as f64],
|
||
GripApply::Translate(d) => {
|
||
let v0 = &pline.vertices[i0];
|
||
let v1 = &pline.vertices[i1];
|
||
let old = arc_midpoint(
|
||
[v0.location.x, v0.location.y],
|
||
[v1.location.x, v1.location.y],
|
||
v0.bulge,
|
||
);
|
||
[old[0] + d.x as f64, old[1] + d.y as f64]
|
||
}
|
||
};
|
||
let p0 = [pline.vertices[i0].location.x, pline.vertices[i0].location.y];
|
||
let p1 = [pline.vertices[i1].location.x, pline.vertices[i1].location.y];
|
||
if let Some(new_bulge) = bulge_from_midpoint(p0, p1, new_mid) {
|
||
pline.vertices[i0].bulge = new_bulge.clamp(-1e6, 1e6);
|
||
}
|
||
}
|
||
}
|
||
|
||
fn apply_transform(pline: &mut LwPolyline, t: &EntityTransform) {
|
||
crate::scene::view::transform::apply_standard_entity_transform(pline, t, |entity, p1, p2| {
|
||
for v in &mut entity.vertices {
|
||
crate::scene::view::transform::reflect_xy_point(&mut v.location.x, &mut v.location.y, p1, p2);
|
||
// Bulge encodes which side the arc bows to; a reflection
|
||
// reverses it or every curved segment flips to the wrong side.
|
||
v.bulge = -v.bulge;
|
||
}
|
||
});
|
||
}
|
||
|
||
impl RenderConvertible for LwPolyline {
|
||
fn to_render(&self, _document: &acadrust::CadDocument) -> Option<RenderEntity> {
|
||
Some(to_render(self))
|
||
}
|
||
}
|
||
|
||
impl crate::entities::traits::Grippable for LwPolyline {
|
||
fn grips(&self) -> Vec<crate::scene::model::object::GripDef> {
|
||
grips(self)
|
||
}
|
||
fn apply_grip(&mut self, grip_id: usize, apply: crate::scene::model::object::GripApply) {
|
||
apply_grip(self, grip_id, apply);
|
||
}
|
||
fn grip_menu(&self, grip_id: usize) -> Vec<crate::scene::model::object::GripMenuItem> {
|
||
use crate::scene::model::object::{GripMenuAction, GripMenuItem};
|
||
let n = self.vertices.len();
|
||
if grip_id < n {
|
||
// Vertex grip. Break only where a split is possible: any vertex
|
||
// of a closed polyline, interior vertices of an open one.
|
||
let breakable = n >= 3 && (self.is_closed || (grip_id > 0 && grip_id < n - 1));
|
||
let mut items = vec![
|
||
GripMenuItem {
|
||
label: "Stretch",
|
||
action: GripMenuAction::Stretch,
|
||
},
|
||
GripMenuItem {
|
||
label: "Add Vertex",
|
||
action: GripMenuAction::AddVertex,
|
||
},
|
||
GripMenuItem {
|
||
label: "Remove Vertex",
|
||
action: GripMenuAction::RemoveVertex,
|
||
},
|
||
];
|
||
if breakable {
|
||
items.push(GripMenuItem {
|
||
label: "Break",
|
||
action: GripMenuAction::BreakVertex,
|
||
});
|
||
}
|
||
return items;
|
||
}
|
||
// Segment midpoint grip.
|
||
let seg = grip_id - n;
|
||
let is_arc = self
|
||
.vertices
|
||
.get(seg)
|
||
.map_or(false, |v| v.bulge.abs() >= 1e-9);
|
||
let convert = if is_arc {
|
||
GripMenuItem {
|
||
label: "Convert to Line",
|
||
action: GripMenuAction::ConvertToLine,
|
||
}
|
||
} else {
|
||
GripMenuItem {
|
||
label: "Convert to Arc",
|
||
action: GripMenuAction::ConvertToArc,
|
||
}
|
||
};
|
||
vec![
|
||
GripMenuItem {
|
||
label: "Stretch",
|
||
action: GripMenuAction::Stretch,
|
||
},
|
||
GripMenuItem {
|
||
label: "Add Vertex",
|
||
action: GripMenuAction::AddVertex,
|
||
},
|
||
convert,
|
||
]
|
||
}
|
||
fn apply_grip_menu(&mut self, grip_id: usize, action: crate::scene::model::object::GripMenuAction) {
|
||
use crate::scene::model::object::GripMenuAction as A;
|
||
let n = self.vertices.len();
|
||
match action {
|
||
A::Stretch => {}
|
||
A::AddVertex => {
|
||
if n == 0 {
|
||
return;
|
||
}
|
||
// The last vertex of an open polyline extends the path. Start
|
||
// the provisional vertex on the endpoint; the grip driver then
|
||
// moves it with the cursor until the placement click.
|
||
if grip_id == n - 1 && !self.is_closed {
|
||
self.vertices[grip_id].bulge = 0.0;
|
||
let mut new_v = self.vertices[grip_id].clone();
|
||
new_v.bulge = 0.0;
|
||
new_v.vertex_id = 0;
|
||
self.vertices.push(new_v);
|
||
return;
|
||
}
|
||
// Insert a provisional vertex midway along the following
|
||
// segment. Arc segments are split into two arcs; the grip
|
||
// driver refits both halves while the cursor moves.
|
||
let (i0, i1) = if grip_id < n {
|
||
let i0 = grip_id;
|
||
let i1 = (grip_id + 1) % n;
|
||
(i0, i1)
|
||
} else {
|
||
let seg = grip_id - n;
|
||
(seg, (seg + 1) % n)
|
||
};
|
||
if i1 == 0 && !self.is_closed {
|
||
return;
|
||
}
|
||
let v0 = self.vertices[i0];
|
||
let v1 = self.vertices[i1];
|
||
let midpoint = if v0.bulge.abs() >= 1e-9 {
|
||
arc_midpoint(
|
||
[v0.location.x, v0.location.y],
|
||
[v1.location.x, v1.location.y],
|
||
v0.bulge,
|
||
)
|
||
} else {
|
||
[
|
||
(v0.location.x + v1.location.x) * 0.5,
|
||
(v0.location.y + v1.location.y) * 0.5,
|
||
]
|
||
};
|
||
let mut new_v = v0;
|
||
new_v.location.x = midpoint[0];
|
||
new_v.location.y = midpoint[1];
|
||
new_v.vertex_id = 0;
|
||
let effective_start = if v0.start_width > 1e-9 {
|
||
v0.start_width
|
||
} else {
|
||
self.constant_width
|
||
};
|
||
let effective_end = if v0.end_width > 1e-9 {
|
||
v0.end_width
|
||
} else {
|
||
self.constant_width
|
||
};
|
||
let middle_width = (effective_start + effective_end) * 0.5;
|
||
self.vertices[i0].end_width = middle_width;
|
||
new_v.start_width = middle_width;
|
||
if v0.bulge.abs() >= 1e-9 {
|
||
let half_bulge = (v0.bulge.atan() * 0.5).tan();
|
||
self.vertices[i0].bulge = half_bulge;
|
||
new_v.bulge = half_bulge;
|
||
}
|
||
let insert_at = (i0 + 1).min(self.vertices.len());
|
||
self.vertices.insert(insert_at, new_v);
|
||
}
|
||
A::RemoveVertex if grip_id < n && self.vertices.len() > 2 => {
|
||
self.vertices.remove(grip_id);
|
||
}
|
||
A::ConvertToArc if grip_id >= n => {
|
||
if let Some(v) = self.vertices.get_mut(grip_id - n) {
|
||
if v.bulge.abs() < 1e-9 {
|
||
v.bulge = 0.5;
|
||
}
|
||
}
|
||
}
|
||
A::ConvertToLine if grip_id >= n => {
|
||
if let Some(v) = self.vertices.get_mut(grip_id - n) {
|
||
v.bulge = 0.0;
|
||
}
|
||
}
|
||
_ => {}
|
||
}
|
||
}
|
||
}
|
||
|
||
impl crate::entities::traits::PropertyEditable for LwPolyline {
|
||
fn geometry_properties(
|
||
&self,
|
||
_text_style_names: &[String],
|
||
) -> Vec<crate::scene::model::object::PropSection> {
|
||
properties(self)
|
||
}
|
||
fn apply_geom_prop(&mut self, field: &str, value: &str) {
|
||
apply_geom_prop(self, field, value);
|
||
}
|
||
}
|
||
|
||
impl crate::entities::traits::Transformable for LwPolyline {
|
||
fn apply_transform(&mut self, t: &crate::command::EntityTransform) {
|
||
apply_transform(self, t);
|
||
}
|
||
}
|
||
|
||
/// Solid-fill bands for a wide LwPolyline, plus the `world_origin` they are
|
||
/// relative to. The band vertices are small f32 offsets from `origin` (the
|
||
/// first vertex), so the relative-to-eye hatch fill keeps sub-unit precision at
|
||
/// UTM-scale coordinates — building them in absolute f32 collapsed the band into
|
||
/// a string of squares far from the origin.
|
||
pub(crate) fn wide_fills(pl: &acadrust::entities::LwPolyline) -> ([f64; 2], Vec<Vec<[f32; 2]>>) {
|
||
// Codes 43 / 40 / 41 store the band's FULL width, and
|
||
// `polyline_segment_fill` offsets ±hw about the centreline — so halve it.
|
||
// Feeding the stored width in whole draws every wide polyline twice as wide
|
||
// as the file asks for, which on a donut (a closed 2-vertex bulge-1 polyline)
|
||
// shows up as a disc 1.5× its real radius.
|
||
let hw_const = pl.constant_width as f32 * 0.5;
|
||
let verts = &pl.vertices;
|
||
let n = verts.len();
|
||
if n < 2 {
|
||
return ([0.0; 2], vec![]);
|
||
}
|
||
let origin = [verts[0].location.x, verts[0].location.y];
|
||
let seg_count = if pl.is_closed { n } else { n - 1 };
|
||
let mut out = Vec::new();
|
||
for i in 0..seg_count {
|
||
let v0 = &verts[i];
|
||
let v1 = &verts[(i + 1) % n];
|
||
let hw0 = if v0.start_width > 1e-9 {
|
||
v0.start_width as f32 * 0.5
|
||
} else {
|
||
hw_const
|
||
};
|
||
let hw1 = if v0.end_width > 1e-9 {
|
||
v0.end_width as f32 * 0.5
|
||
} else {
|
||
hw_const
|
||
};
|
||
if hw0 < 1e-6 && hw1 < 1e-6 {
|
||
continue;
|
||
}
|
||
let p0 = [
|
||
(v0.location.x - origin[0]) as f32,
|
||
(v0.location.y - origin[1]) as f32,
|
||
];
|
||
let p1 = [
|
||
(v1.location.x - origin[0]) as f32,
|
||
(v1.location.y - origin[1]) as f32,
|
||
];
|
||
if let Some(poly) =
|
||
crate::entities::common::polyline_segment_fill(p0, p1, hw0, hw1, v0.bulge as f32)
|
||
{
|
||
out.push(poly);
|
||
}
|
||
}
|
||
(origin, out)
|
||
}
|
||
|
||
impl crate::entities::traits::MassPropsCalc for acadrust::entities::LwPolyline {
|
||
fn mass_props(&self) -> crate::entities::traits::MassProps {
|
||
let p = self;
|
||
let n = p.vertices.len();
|
||
if n < 2 {
|
||
return crate::entities::traits::MassProps {
|
||
area: 0.0,
|
||
perimeter: 0.0,
|
||
cx: 0.0,
|
||
cy: 0.0,
|
||
};
|
||
}
|
||
// Shoelace area + perimeter
|
||
let mut area_sum = 0.0f64;
|
||
let mut perimeter = 0.0f64;
|
||
let mut cx_sum = 0.0f64;
|
||
let mut cy_sum = 0.0f64;
|
||
let n_segs = if p.is_closed { n } else { n - 1 };
|
||
for idx in 0..n_segs {
|
||
let v0 = &p.vertices[idx];
|
||
let v1 = &p.vertices[(idx + 1) % n];
|
||
let x0 = v0.location.x;
|
||
let y0 = v0.location.y;
|
||
let x1 = v1.location.x;
|
||
let y1 = v1.location.y;
|
||
area_sum += x0 * y1 - x1 * y0;
|
||
perimeter += ((x1 - x0).powi(2) + (y1 - y0).powi(2)).sqrt();
|
||
cx_sum += (x0 + x1) * (x0 * y1 - x1 * y0);
|
||
cy_sum += (y0 + y1) * (x0 * y1 - x1 * y0);
|
||
}
|
||
let area = (area_sum / 2.0).abs();
|
||
let (cx, cy) = if area > 1e-12 {
|
||
(cx_sum / (6.0 * area), cy_sum / (6.0 * area))
|
||
} else {
|
||
let sx: f64 = p.vertices.iter().map(|v| v.location.x).sum::<f64>() / n as f64;
|
||
let sy: f64 = p.vertices.iter().map(|v| v.location.y).sum::<f64>() / n as f64;
|
||
(sx, sy)
|
||
};
|
||
crate::entities::traits::MassProps {
|
||
area,
|
||
perimeter,
|
||
cx,
|
||
cy,
|
||
}
|
||
}
|
||
}
|