05ea31aa2a
Type-as-you-go suggestion popup above the input that filters known command names by substring (so `LEADER` surfaces both LEADER and MLEADER). Up / Down navigates the list, Enter dispatches the highlighted entry, clicking a row dispatches directly. Esc on a non-empty input clears the buffer instead of escalating to command-cancel. The name corpus comes from `inventory::submit!` blocks placed next to each `CadCommand` impl rather than a hand-maintained static list. Adding a new interactive command means dropping one `inventory::submit!` line in its own module file — the autocomplete picks it up at the next compile. 98 submissions seeded across 60 module files; `command::all_registered_command_names()` flattens them at runtime. One-shot dispatch arms in `app/commands.rs` (NEW, OPEN, SAVE, UNDO, …) don't have a `CadCommand` impl and are therefore absent from autocomplete by design. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
2464 lines
85 KiB
Rust
2464 lines
85 KiB
Rust
// Trim / Extend — ribbon definitions + full command implementations.
|
||
//
|
||
// TRIM (TR): Click the segment you want to remove. The command finds all
|
||
// intersections of that entity with every other entity and trims
|
||
// out the clicked interval. Stays active — click more segments,
|
||
// press Enter to finish.
|
||
//
|
||
// EXTEND (EX): Click near one end of an entity. The command extends that
|
||
// endpoint to the nearest intersecting boundary. Stays active.
|
||
|
||
use std::f64::consts::TAU;
|
||
|
||
use acadrust::entities::{
|
||
Arc as ArcEnt, Ellipse as EllipseEnt, Line as LineEnt, LwPolyline, Ray as RayEnt,
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||
Spline as SplineEnt, XLine as XLineEnt,
|
||
};
|
||
use acadrust::types::Vector3;
|
||
use acadrust::{EntityType, Handle};
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||
use glam::Vec3;
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||
use truck_modeling::base::{BoundedCurve, Cut, ParametricCurve};
|
||
|
||
use crate::command::{CadCommand, CmdResult};
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||
use crate::modules::home::modify::spline_ops::{
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bspline_to_spline, spline_nearest_t, spline_pts_wire, spline_sample_xy, spline_to_bspline,
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||
t_to_rel,
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};
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use crate::modules::IconKind;
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use crate::scene::wire_model::WireModel;
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// ── Dropdown constants ─────────────────────────────────────────────────────
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pub const DROPDOWN_ID: &str = "trim_extend";
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pub const ICON: IconKind = IconKind::Svg(include_bytes!("../../../../assets/icons/trim.svg"));
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pub const DROPDOWN_ITEMS: &[(&str, &str, IconKind)] = &[
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(
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"TRIM",
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"Trim",
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IconKind::Svg(include_bytes!("../../../../assets/icons/trim.svg")),
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),
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(
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"EXTEND",
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"Extend",
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IconKind::Svg(include_bytes!("../../../../assets/icons/extend.svg")),
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),
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];
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// ══════════════════════════════════════════════════════════════════════════
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// Geometry helpers
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// ══════════════════════════════════════════════════════════════════════════
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/// Normalize angle to [0, 2π).
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fn norm(a: f64) -> f64 {
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((a % TAU) + TAU) % TAU
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}
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/// Is angle `a` within the arc from `s` to `e` (CCW, radians)?
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fn in_arc(a: f64, s: f64, e: f64) -> bool {
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let (a, s, e) = (norm(a), norm(s), norm(e));
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if (e - s).abs() < 1e-9 || (e - s - TAU).abs() < 1e-9 {
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return true;
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}
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if s <= e {
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a >= s - 1e-9 && a <= e + 1e-9
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} else {
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a >= s - 1e-9 || a <= e + 1e-9
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}
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}
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/// Parametric t ∈ [0,1] on arc (a0→a1 CCW) for angle `a`.
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fn arc_t(a: f64, a0: f64, a1: f64) -> f64 {
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let span = {
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let s = norm(a1) - norm(a0);
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if s <= 0.0 {
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s + TAU
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} else {
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s
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}
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};
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let da = {
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let d = norm(a) - norm(a0);
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if d < 0.0 {
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d + TAU
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} else {
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d
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}
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};
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(da / span).clamp(0.0, 1.0)
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}
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/// Intersect infinite lines (p+t·d) and (q+u·e). Returns (t, u).
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fn ll(
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px: f64,
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py: f64,
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dx: f64,
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dy: f64,
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qx: f64,
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qy: f64,
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ex: f64,
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ey: f64,
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) -> Option<(f64, f64)> {
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let det = dx * ey - dy * ex;
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if det.abs() < 1e-10 {
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return None;
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}
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let t = ((qx - px) * ey - (qy - py) * ex) / det;
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let u = ((qx - px) * dy - (qy - py) * dx) / det;
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Some((t, u))
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}
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/// Intersect infinite line (p+t·d) with circle (cx,cy,r). Returns t values.
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fn lc(px: f64, py: f64, dx: f64, dy: f64, cx: f64, cy: f64, r: f64) -> Vec<f64> {
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let fx = px - cx;
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||
let fy = py - cy;
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let a = dx * dx + dy * dy;
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let b = 2.0 * (fx * dx + fy * dy);
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let c = fx * fx + fy * fy - r * r;
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let disc = b * b - 4.0 * a * c;
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||
if disc < 0.0 {
|
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return vec![];
|
||
}
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||
let sq = disc.sqrt();
|
||
if disc < 1e-14 {
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vec![(-b) / (2.0 * a)]
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} else {
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vec![(-b - sq) / (2.0 * a), (-b + sq) / (2.0 * a)]
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}
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}
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/// Circle-circle intersection: angles on circle 1 where they meet.
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fn cc_angles(cx1: f64, cy1: f64, r1: f64, cx2: f64, cy2: f64, r2: f64) -> Vec<f64> {
|
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let d = ((cx2 - cx1).powi(2) + (cy2 - cy1).powi(2)).sqrt();
|
||
if d < 1e-9 || d > r1 + r2 + 1e-9 || d < (r1 - r2).abs() - 1e-9 {
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||
return vec![];
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||
}
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let a = (r1 * r1 - r2 * r2 + d * d) / (2.0 * d);
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let h2 = r1 * r1 - a * a;
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if h2 < 0.0 {
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return vec![];
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}
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let h = h2.sqrt();
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let mx = cx1 + a * (cx2 - cx1) / d;
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let my = cy1 + a * (cy2 - cy1) / d;
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let px = h * (cy2 - cy1) / d;
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let py = -h * (cx2 - cx1) / d;
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let a1 = ((my + py) - cy1).atan2((mx + px) - cx1);
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let a2 = ((my - py) - cy1).atan2((mx - px) - cx1);
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if h < 1e-9 {
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vec![a1]
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||
} else {
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vec![a1, a2]
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||
}
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}
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/// Line (px+s·d) vs ellipse (cx,cy,a,b,nx,ny). Returns (s_on_line, t_on_ellipse) pairs.
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/// nx,ny: unit major-axis; perp = (-ny, nx). Parametric ellipse: P(t) = center + a·cos(t)·n + b·sin(t)·v.
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fn le(
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px: f64,
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py: f64,
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dpx: f64,
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dpy: f64,
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cx: f64,
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cy: f64,
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a: f64,
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b: f64,
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nx: f64,
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ny: f64,
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) -> Vec<(f64, f64)> {
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// Transform line origin to ellipse local frame
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let rx = px - cx;
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let ry = py - cy;
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// Project onto major/minor axes
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let xl0 = rx * nx + ry * ny;
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let yl0 = -rx * ny + ry * nx;
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let dxl = dpx * nx + dpy * ny;
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let dyl = -dpx * ny + dpy * nx;
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// Scale by 1/a, 1/b → circle equation
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let xa = xl0 / a;
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let xda = dxl / a;
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let yb = yl0 / b;
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let ydb = dyl / b;
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let big_a = xda * xda + ydb * ydb;
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if big_a < 1e-20 {
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return vec![];
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}
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let big_b = 2.0 * (xa * xda + yb * ydb);
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let big_c = xa * xa + yb * yb - 1.0;
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let disc = big_b * big_b - 4.0 * big_a * big_c;
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if disc < 0.0 {
|
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return vec![];
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}
|
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let sq = disc.sqrt();
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let s_vals: Vec<f64> = if disc < 1e-14 {
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vec![(-big_b) / (2.0 * big_a)]
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} else {
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vec![(-big_b - sq) / (2.0 * big_a), (-big_b + sq) / (2.0 * big_a)]
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};
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s_vals
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.into_iter()
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.map(|s| {
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let xl = xl0 + s * dxl;
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let yl = yl0 + s * dyl;
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let t = yl.atan2(xl); // ≡ atan2(yl/b, xl/a) but faster since sign is preserved
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(s, t)
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})
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.collect()
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}
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// ── Boundary geometry ─────────────────────────────────────────────────────
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|
||
/// Virtual extent used to represent infinite ends of Ray / XLine.
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const TRIM_EXTENT: f64 = 1_000_000.0;
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/// If a trim interval endpoint is beyond this threshold it is treated as "infinite".
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const INF_T: f64 = 0.9999;
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enum Geo {
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Line {
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handle: Handle,
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p1: [f64; 2],
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p2: [f64; 2],
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},
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Arc {
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handle: Handle,
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cx: f64,
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cy: f64,
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r: f64,
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a0: f64,
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a1: f64,
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},
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Circle {
|
||
handle: Handle,
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cx: f64,
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cy: f64,
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r: f64,
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},
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/// Semi-infinite line from base in +direction.
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Ray {
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handle: Handle,
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bx: f64,
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by: f64,
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dx: f64,
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||
dy: f64,
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||
},
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/// Fully-infinite line through base along direction.
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InfLine {
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||
handle: Handle,
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bx: f64,
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by: f64,
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||
dx: f64,
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||
dy: f64,
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||
},
|
||
/// Ellipse arc: center, semi-axes, unit major-axis direction, parameter range [t0,t1].
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Ellipse {
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handle: Handle,
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cx: f64,
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cy: f64,
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a: f64, // semi-major
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b: f64, // semi-minor
|
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nx: f64, // unit major-axis X
|
||
ny: f64, // unit major-axis Y
|
||
t0: f64, // start parameter
|
||
t1: f64, // end parameter (may be > 2π if wrapped)
|
||
},
|
||
/// Spline represented as sampled polyline segments (DXF XY).
|
||
Spline {
|
||
handle: Handle,
|
||
segs: Vec<([f64; 2], [f64; 2])>,
|
||
},
|
||
}
|
||
|
||
fn build_geos(entities: &[EntityType]) -> Vec<Geo> {
|
||
entities
|
||
.iter()
|
||
.filter_map(|e| {
|
||
let h = e.common().handle;
|
||
match e {
|
||
EntityType::Line(l) => Some(Geo::Line {
|
||
handle: h,
|
||
p1: [l.start.x, l.start.y],
|
||
p2: [l.end.x, l.end.y],
|
||
}),
|
||
EntityType::Arc(a) => Some(Geo::Arc {
|
||
handle: h,
|
||
cx: a.center.x,
|
||
cy: a.center.y,
|
||
r: a.radius,
|
||
a0: a.start_angle,
|
||
a1: a.end_angle,
|
||
}),
|
||
EntityType::Circle(c) => Some(Geo::Circle {
|
||
handle: h,
|
||
cx: c.center.x,
|
||
cy: c.center.y,
|
||
r: c.radius,
|
||
}),
|
||
EntityType::Ray(r) => Some(Geo::Ray {
|
||
handle: h,
|
||
bx: r.base_point.x,
|
||
by: r.base_point.y,
|
||
dx: r.direction.x,
|
||
dy: r.direction.y,
|
||
}),
|
||
EntityType::XLine(x) => Some(Geo::InfLine {
|
||
handle: h,
|
||
bx: x.base_point.x,
|
||
by: x.base_point.y,
|
||
dx: x.direction.x,
|
||
dy: x.direction.y,
|
||
}),
|
||
EntityType::Ellipse(e) => {
|
||
let mx = e.major_axis.x;
|
||
let my = e.major_axis.y;
|
||
let a = (mx * mx + my * my).sqrt();
|
||
if a < 1e-9 {
|
||
return None;
|
||
}
|
||
let (nx, ny) = (mx / a, my / a);
|
||
let b = a * e.minor_axis_ratio;
|
||
let t0 = e.start_parameter;
|
||
let mut t1 = e.end_parameter;
|
||
if t1 <= t0 {
|
||
t1 += TAU;
|
||
}
|
||
Some(Geo::Ellipse {
|
||
handle: h,
|
||
cx: e.center.x,
|
||
cy: e.center.y,
|
||
a,
|
||
b,
|
||
nx,
|
||
ny,
|
||
t0,
|
||
t1,
|
||
})
|
||
}
|
||
EntityType::Spline(s) => {
|
||
let (_, pts) = spline_sample_xy(s, 64);
|
||
if pts.len() < 2 {
|
||
return None;
|
||
}
|
||
let segs = pts
|
||
.windows(2)
|
||
.map(|w| ([w[0][0], w[0][1]], [w[1][0], w[1][1]]))
|
||
.collect();
|
||
Some(Geo::Spline { handle: h, segs })
|
||
}
|
||
_ => None,
|
||
}
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
// ── Intersection helpers ──────────────────────────────────────────────────
|
||
|
||
/// Sorted, deduped t-params ∈ [0,1] where LINE segment (ax,ay)→(bx,by) intersects boundaries.
|
||
fn line_seg_ts(ax: f64, ay: f64, bx: f64, by: f64, target: Handle, geos: &[Geo]) -> Vec<f64> {
|
||
let (dx, dy) = (bx - ax, by - ay);
|
||
let mut ts = vec![];
|
||
for geo in geos {
|
||
match geo {
|
||
Geo::Line { handle, p1, p2 } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
let (ex, ey) = (p2[0] - p1[0], p2[1] - p1[1]);
|
||
if let Some((t, u)) = ll(ax, ay, dx, dy, p1[0], p1[1], ex, ey) {
|
||
if (-1e-9..=1.0 + 1e-9).contains(&u) && (-1e-9..=1.0 + 1e-9).contains(&t) {
|
||
ts.push(t.clamp(0.0, 1.0));
|
||
}
|
||
}
|
||
}
|
||
Geo::Arc {
|
||
handle,
|
||
cx,
|
||
cy,
|
||
r,
|
||
a0,
|
||
a1,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for t in lc(ax, ay, dx, dy, *cx, *cy, *r) {
|
||
if !(-1e-9..=1.0 + 1e-9).contains(&t) {
|
||
continue;
|
||
}
|
||
let ix = ax + t * dx;
|
||
let iy = ay + t * dy;
|
||
if in_arc((iy - cy).atan2(ix - cx), *a0, *a1) {
|
||
ts.push(t.clamp(0.0, 1.0));
|
||
}
|
||
}
|
||
}
|
||
Geo::Circle { handle, cx, cy, r } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for t in lc(ax, ay, dx, dy, *cx, *cy, *r) {
|
||
if (-1e-9..=1.0 + 1e-9).contains(&t) {
|
||
ts.push(t.clamp(0.0, 1.0));
|
||
}
|
||
}
|
||
}
|
||
Geo::Ray {
|
||
handle,
|
||
bx: rbx,
|
||
by: rby,
|
||
dx: rdx,
|
||
dy: rdy,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
if let Some((t, u)) = ll(ax, ay, dx, dy, *rbx, *rby, *rdx, *rdy) {
|
||
// Ray: u >= 0 (semi-infinite)
|
||
if u >= -1e-9 && (-1e-9..=1.0 + 1e-9).contains(&t) {
|
||
ts.push(t.clamp(0.0, 1.0));
|
||
}
|
||
}
|
||
}
|
||
Geo::InfLine {
|
||
handle,
|
||
bx: ibx,
|
||
by: iby,
|
||
dx: idx,
|
||
dy: idy,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
if let Some((t, _u)) = ll(ax, ay, dx, dy, *ibx, *iby, *idx, *idy) {
|
||
// XLine: any u accepted
|
||
if (-1e-9..=1.0 + 1e-9).contains(&t) {
|
||
ts.push(t.clamp(0.0, 1.0));
|
||
}
|
||
}
|
||
}
|
||
Geo::Ellipse {
|
||
handle,
|
||
cx,
|
||
cy,
|
||
a,
|
||
b,
|
||
nx,
|
||
ny,
|
||
t0,
|
||
t1,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for (s, t_ell) in le(ax, ay, dx, dy, *cx, *cy, *a, *b, *nx, *ny) {
|
||
if !(-1e-9..=1.0 + 1e-9).contains(&s) {
|
||
continue;
|
||
}
|
||
if in_arc(t_ell, *t0, *t1) {
|
||
ts.push(s.clamp(0.0, 1.0));
|
||
}
|
||
}
|
||
}
|
||
Geo::Spline { handle, segs } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for (p1, p2) in segs {
|
||
let ex = p2[0] - p1[0];
|
||
let ey = p2[1] - p1[1];
|
||
if let Some((t, u)) = ll(ax, ay, dx, dy, p1[0], p1[1], ex, ey) {
|
||
if (-1e-9..=1.0 + 1e-9).contains(&u) && (-1e-9..=1.0 + 1e-9).contains(&t) {
|
||
ts.push(t.clamp(0.0, 1.0));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
ts.sort_by(|a, b| a.partial_cmp(b).unwrap());
|
||
ts.dedup_by(|a, b| (*a - *b).abs() < 1e-6);
|
||
ts
|
||
}
|
||
|
||
/// Sorted, deduped t-params ∈ [0,1] where ARC (cx,cy,r,a0→a1) intersects boundaries.
|
||
fn arc_seg_ts(
|
||
cx: f64,
|
||
cy: f64,
|
||
r: f64,
|
||
a0: f64,
|
||
a1: f64,
|
||
target: Handle,
|
||
geos: &[Geo],
|
||
) -> Vec<f64> {
|
||
let mut ts = vec![];
|
||
for geo in geos {
|
||
let angles: Vec<f64> = match geo {
|
||
Geo::Line { handle, p1, p2 } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
let (ldx, ldy) = (p2[0] - p1[0], p2[1] - p1[1]);
|
||
lc(p1[0], p1[1], ldx, ldy, cx, cy, r)
|
||
.into_iter()
|
||
.filter(|&u| (-1e-9..=1.0 + 1e-9).contains(&u))
|
||
.map(|u| (p1[1] + u * ldy - cy).atan2(p1[0] + u * ldx - cx))
|
||
.collect()
|
||
}
|
||
Geo::Arc {
|
||
handle,
|
||
cx: cx2,
|
||
cy: cy2,
|
||
r: r2,
|
||
a0: a02,
|
||
a1: a12,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
cc_angles(cx, cy, r, *cx2, *cy2, *r2)
|
||
.into_iter()
|
||
.filter(|&a| in_arc(a, *a02, *a12))
|
||
.collect()
|
||
}
|
||
Geo::Circle {
|
||
handle,
|
||
cx: cx2,
|
||
cy: cy2,
|
||
r: r2,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
cc_angles(cx, cy, r, *cx2, *cy2, *r2)
|
||
}
|
||
Geo::Ray {
|
||
handle,
|
||
bx: rbx,
|
||
by: rby,
|
||
dx: rdx,
|
||
dy: rdy,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
// Intersect arc circle with the Ray direction
|
||
lc(*rbx, *rby, *rdx, *rdy, cx, cy, r)
|
||
.into_iter()
|
||
.filter(|&u| u >= -1e-9) // Ray: u >= 0
|
||
.map(|u| (rby + u * rdy - cy).atan2(rbx + u * rdx - cx))
|
||
.collect()
|
||
}
|
||
Geo::InfLine {
|
||
handle,
|
||
bx: ibx,
|
||
by: iby,
|
||
dx: idx,
|
||
dy: idy,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
// XLine: any u accepted
|
||
lc(*ibx, *iby, *idx, *idy, cx, cy, r)
|
||
.into_iter()
|
||
.map(|u| (iby + u * idy - cy).atan2(ibx + u * idx - cx))
|
||
.collect()
|
||
}
|
||
Geo::Ellipse {
|
||
handle,
|
||
cx: ecx,
|
||
cy: ecy,
|
||
a: ea,
|
||
b: eb,
|
||
nx,
|
||
ny,
|
||
t0: et0,
|
||
t1: et1,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
// Sample the arc and find where it crosses the ellipse boundary.
|
||
ellipse_boundary_angles_for_arc(
|
||
cx, cy, r, a0, a1, *ecx, *ecy, *ea, *eb, *nx, *ny, *et0, *et1,
|
||
)
|
||
}
|
||
Geo::Spline { handle, segs } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
// Intersect arc circle with each spline segment.
|
||
let mut hit_angles = vec![];
|
||
for (p1, p2) in segs {
|
||
let ldx = p2[0] - p1[0];
|
||
let ldy = p2[1] - p1[1];
|
||
for u in lc(p1[0], p1[1], ldx, ldy, cx, cy, r) {
|
||
if !(-1e-9..=1.0 + 1e-9).contains(&u) {
|
||
continue;
|
||
}
|
||
let ix = p1[0] + u * ldx;
|
||
let iy = p1[1] + u * ldy;
|
||
hit_angles.push((iy - cy).atan2(ix - cx));
|
||
}
|
||
}
|
||
hit_angles
|
||
}
|
||
};
|
||
for a in angles {
|
||
if in_arc(a, a0, a1) {
|
||
ts.push(arc_t(a, a0, a1));
|
||
}
|
||
}
|
||
}
|
||
ts.sort_by(|a, b| a.partial_cmp(b).unwrap());
|
||
ts.dedup_by(|a, b| (*a - *b).abs() < 1e-6);
|
||
ts
|
||
}
|
||
|
||
/// Find angles on a circular arc where it crosses an ellipse-arc boundary.
|
||
/// Uses 64-sample sign-change detection + bisection.
|
||
fn ellipse_boundary_angles_for_arc(
|
||
cx: f64,
|
||
cy: f64,
|
||
r: f64,
|
||
a0: f64,
|
||
a1: f64,
|
||
ecx: f64,
|
||
ecy: f64,
|
||
ea: f64,
|
||
eb: f64,
|
||
nx: f64,
|
||
ny: f64,
|
||
et0: f64,
|
||
et1: f64,
|
||
) -> Vec<f64> {
|
||
// f(α) = (x_local/ea)² + (y_local/eb)² – 1 where (x_local, y_local) is the arc
|
||
// point projected onto ellipse local axes.
|
||
let f = |alpha: f64| {
|
||
let px = cx + r * alpha.cos() - ecx;
|
||
let py = cy + r * alpha.sin() - ecy;
|
||
let xl = px * nx + py * ny;
|
||
let yl = -px * ny + py * nx;
|
||
(xl / ea).powi(2) + (yl / eb).powi(2) - 1.0
|
||
};
|
||
let span = {
|
||
let s = norm(a1) - norm(a0);
|
||
if s <= 0.0 {
|
||
s + TAU
|
||
} else {
|
||
s
|
||
}
|
||
};
|
||
let n = 128usize;
|
||
let mut hits = vec![];
|
||
let mut prev = f(norm(a0));
|
||
for i in 1..=n {
|
||
let alpha = norm(a0) + span * (i as f64 / n as f64);
|
||
let cur = f(alpha);
|
||
if prev * cur <= 0.0 {
|
||
// Bisect
|
||
let alpha_lo = norm(a0) + span * ((i - 1) as f64 / n as f64);
|
||
let alpha_hi = alpha;
|
||
let mut lo = alpha_lo;
|
||
let mut hi = alpha_hi;
|
||
let mut flo = prev;
|
||
for _ in 0..32 {
|
||
let mid = (lo + hi) * 0.5;
|
||
let fm = f(mid);
|
||
if flo * fm <= 0.0 {
|
||
hi = mid;
|
||
} else {
|
||
lo = mid;
|
||
flo = fm;
|
||
}
|
||
}
|
||
let alpha_hit = (lo + hi) * 0.5;
|
||
// Check that the intersection point is on the ellipse ARC (not outside t0..t1)
|
||
let px = cx + r * alpha_hit.cos() - ecx;
|
||
let py = cy + r * alpha_hit.sin() - ecy;
|
||
let xl = px * nx + py * ny;
|
||
let yl = -px * ny + py * nx;
|
||
let t_ell = yl.atan2(xl);
|
||
if in_arc(t_ell, et0, et1) {
|
||
hits.push(alpha_hit);
|
||
}
|
||
}
|
||
prev = cur;
|
||
}
|
||
hits
|
||
}
|
||
|
||
/// Sorted t-params ∈ [0,1] where an ELLIPSE arc intersects boundary geometries.
|
||
/// t is the normalised eccentric-anomaly parameter along [t0, t1].
|
||
fn ellipse_seg_ts(
|
||
cx: f64,
|
||
cy: f64,
|
||
a: f64,
|
||
b: f64,
|
||
nx: f64,
|
||
ny: f64,
|
||
t0: f64,
|
||
t1: f64,
|
||
target: Handle,
|
||
geos: &[Geo],
|
||
) -> Vec<f64> {
|
||
let span = t1 - t0; // always positive (build_geos ensures t1 > t0)
|
||
let ellipse_pt = |t: f64| -> [f64; 2] {
|
||
[
|
||
cx + a * t.cos() * nx - b * t.sin() * ny,
|
||
cy + a * t.cos() * ny + b * t.sin() * nx,
|
||
]
|
||
};
|
||
// f_boundary(t) > 0 means "outside this boundary segment"
|
||
let mut ts = vec![];
|
||
|
||
for geo in geos {
|
||
match geo {
|
||
Geo::Line { handle, p1, p2 } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
// Find t values where ellipse crosses the infinite line p1→p2,
|
||
// then filter to the finite segment [p1,p2].
|
||
let ldx = p2[0] - p1[0];
|
||
let ldy = p2[1] - p1[1];
|
||
for (s, t_ell) in le(p1[0], p1[1], ldx, ldy, cx, cy, a, b, nx, ny) {
|
||
if !(-1e-9..=1.0 + 1e-9).contains(&s) {
|
||
continue;
|
||
}
|
||
if in_arc(t_ell, t0, t1) {
|
||
let t_norm = arc_t(t_ell, t0, t0 + span);
|
||
ts.push(t_norm);
|
||
}
|
||
}
|
||
}
|
||
Geo::Arc {
|
||
handle,
|
||
cx: acx,
|
||
cy: acy,
|
||
r,
|
||
a0: aa0,
|
||
a1: aa1,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
// 64-sample sign-change on (dist_to_arc_circle - r)
|
||
let n = 64usize;
|
||
let mut prev_sign = {
|
||
let [px, py] = ellipse_pt(t0);
|
||
(px - acx).hypot(py - acy) - r
|
||
};
|
||
for i in 1..=n {
|
||
let t_ell = t0 + span * (i as f64 / n as f64);
|
||
let [px, py] = ellipse_pt(t_ell);
|
||
let cur_sign = (px - acx).hypot(py - acy) - r;
|
||
if prev_sign * cur_sign <= 0.0 {
|
||
let t_lo = t0 + span * ((i - 1) as f64 / n as f64);
|
||
let t_hi = t_ell;
|
||
let mut lo = t_lo;
|
||
let mut hi = t_hi;
|
||
let mut flo = prev_sign;
|
||
for _ in 0..32 {
|
||
let mid = (lo + hi) * 0.5;
|
||
let [px2, py2] = ellipse_pt(mid);
|
||
let fm = (px2 - acx).hypot(py2 - acy) - r;
|
||
if flo * fm <= 0.0 {
|
||
hi = mid;
|
||
} else {
|
||
lo = mid;
|
||
flo = fm;
|
||
}
|
||
}
|
||
let t_hit = (lo + hi) * 0.5;
|
||
let [phx, phy] = ellipse_pt(t_hit);
|
||
let ang = (phy - acy).atan2(phx - acx);
|
||
if in_arc(ang, *aa0, *aa1) {
|
||
ts.push(arc_t(t_hit, t0, t0 + span));
|
||
}
|
||
}
|
||
prev_sign = cur_sign;
|
||
}
|
||
}
|
||
Geo::Circle {
|
||
handle,
|
||
cx: acx,
|
||
cy: acy,
|
||
r,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
let n = 64usize;
|
||
let mut prev_sign = {
|
||
let [px, py] = ellipse_pt(t0);
|
||
(px - acx).hypot(py - acy) - r
|
||
};
|
||
for i in 1..=n {
|
||
let t_ell = t0 + span * (i as f64 / n as f64);
|
||
let [px, py] = ellipse_pt(t_ell);
|
||
let cur_sign = (px - acx).hypot(py - acy) - r;
|
||
if prev_sign * cur_sign <= 0.0 {
|
||
let t_lo = t0 + span * ((i - 1) as f64 / n as f64);
|
||
let t_hi = t_ell;
|
||
let mut lo = t_lo;
|
||
let mut hi = t_hi;
|
||
let mut flo = prev_sign;
|
||
for _ in 0..32 {
|
||
let mid = (lo + hi) * 0.5;
|
||
let [px2, py2] = ellipse_pt(mid);
|
||
let fm = (px2 - acx).hypot(py2 - acy) - r;
|
||
if flo * fm <= 0.0 {
|
||
hi = mid;
|
||
} else {
|
||
lo = mid;
|
||
flo = fm;
|
||
}
|
||
}
|
||
ts.push(arc_t((lo + hi) * 0.5, t0, t0 + span));
|
||
}
|
||
prev_sign = cur_sign;
|
||
}
|
||
}
|
||
Geo::Ray {
|
||
handle,
|
||
bx: rbx,
|
||
by: rby,
|
||
dx: rdx,
|
||
dy: rdy,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for (s, t_ell) in le(*rbx, *rby, *rdx, *rdy, cx, cy, a, b, nx, ny) {
|
||
if s >= -1e-9 && in_arc(t_ell, t0, t1) {
|
||
ts.push(arc_t(t_ell, t0, t0 + span));
|
||
}
|
||
}
|
||
}
|
||
Geo::InfLine {
|
||
handle,
|
||
bx: ibx,
|
||
by: iby,
|
||
dx: idx,
|
||
dy: idy,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for (_s, t_ell) in le(*ibx, *iby, *idx, *idy, cx, cy, a, b, nx, ny) {
|
||
if in_arc(t_ell, t0, t1) {
|
||
ts.push(arc_t(t_ell, t0, t0 + span));
|
||
}
|
||
}
|
||
}
|
||
Geo::Ellipse { handle, .. } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
// Ellipse-ellipse: numerical 64-sample
|
||
if let Geo::Ellipse {
|
||
cx: ecx2,
|
||
cy: ecy2,
|
||
a: ea2,
|
||
b: eb2,
|
||
nx: nx2,
|
||
ny: ny2,
|
||
t0: et02,
|
||
t1: et12,
|
||
..
|
||
} = geo
|
||
{
|
||
let n = 64usize;
|
||
let f = |t: f64| -> f64 {
|
||
let [px, py] = ellipse_pt(t);
|
||
let xl = (px - ecx2) * nx2 + (py - ecy2) * ny2;
|
||
let yl = -(px - ecx2) * ny2 + (py - ecy2) * nx2;
|
||
(xl / ea2).powi(2) + (yl / eb2).powi(2) - 1.0
|
||
};
|
||
let mut prev_f = f(t0);
|
||
for i in 1..=n {
|
||
let t_ell = t0 + span * (i as f64 / n as f64);
|
||
let cur_f = f(t_ell);
|
||
if prev_f * cur_f <= 0.0 {
|
||
let t_lo = t0 + span * ((i - 1) as f64 / n as f64);
|
||
let mut lo = t_lo;
|
||
let mut hi = t_ell;
|
||
let mut flo = prev_f;
|
||
for _ in 0..32 {
|
||
let mid = (lo + hi) * 0.5;
|
||
let fm = f(mid);
|
||
if flo * fm <= 0.0 {
|
||
hi = mid;
|
||
} else {
|
||
lo = mid;
|
||
flo = fm;
|
||
}
|
||
}
|
||
let t_hit = (lo + hi) * 0.5;
|
||
let [phx, phy] = ellipse_pt(t_hit);
|
||
let xl = (phx - ecx2) * nx2 + (phy - ecy2) * ny2;
|
||
let yl = -(phx - ecx2) * ny2 + (phy - ecy2) * nx2;
|
||
let t_ell2 = yl.atan2(xl);
|
||
if in_arc(t_ell2, *et02, *et12) {
|
||
ts.push(arc_t(t_hit, t0, t0 + span));
|
||
}
|
||
}
|
||
prev_f = cur_f;
|
||
}
|
||
}
|
||
}
|
||
Geo::Spline { handle, segs } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
// Ellipse × Spline: sign-change detection on each spline segment
|
||
for (p1, p2) in segs {
|
||
let ldx = p2[0] - p1[0];
|
||
let ldy = p2[1] - p1[1];
|
||
for (s, t_ell) in le(p1[0], p1[1], ldx, ldy, cx, cy, a, b, nx, ny) {
|
||
if !(-1e-9..=1.0 + 1e-9).contains(&s) {
|
||
continue;
|
||
}
|
||
if in_arc(t_ell, t0, t1) {
|
||
ts.push(arc_t(t_ell, t0, t0 + span));
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
ts.sort_by(|a, b| a.partial_cmp(b).unwrap());
|
||
ts.dedup_by(|a, b| (*a - *b).abs() < 1e-6);
|
||
ts
|
||
}
|
||
|
||
/// Trim an Ellipse entity. Returns the surviving ellipse-arc segments.
|
||
fn trim_ellipse(orig: &EllipseEnt, ts: &[f64], t_click: f64) -> Vec<EntityType> {
|
||
let t0 = orig.start_parameter;
|
||
let mut t1 = orig.end_parameter;
|
||
if t1 <= t0 {
|
||
t1 += TAU;
|
||
}
|
||
let span = t1 - t0;
|
||
let angle_at = |t: f64| t0 + span * t;
|
||
|
||
trim_intervals(ts, t_click)
|
||
.into_iter()
|
||
.filter_map(|(ta, tb)| {
|
||
if (tb - ta).abs() < 1e-6 {
|
||
return None;
|
||
}
|
||
let mut e = orig.clone();
|
||
e.common.handle = Handle::NULL;
|
||
e.start_parameter = angle_at(ta);
|
||
e.end_parameter = angle_at(tb);
|
||
Some(EntityType::Ellipse(e))
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
/// Extend an Ellipse arc to the nearest boundary (along the arc direction).
|
||
fn extend_ellipse(orig: &EllipseEnt, t_click: f64, geos: &[Geo]) -> Option<EntityType> {
|
||
let t0 = orig.start_parameter;
|
||
let mut t1 = orig.end_parameter;
|
||
if t1 <= t0 {
|
||
t1 += TAU;
|
||
}
|
||
let span = t1 - t0;
|
||
let a = (orig.major_axis.x.powi(2) + orig.major_axis.y.powi(2)).sqrt();
|
||
if a < 1e-9 {
|
||
return None;
|
||
}
|
||
let b = a * orig.minor_axis_ratio;
|
||
let (nx, ny) = (orig.major_axis.x / a, orig.major_axis.y / a);
|
||
let cx = orig.center.x;
|
||
let cy = orig.center.y;
|
||
let ts = ellipse_seg_ts(cx, cy, a, b, nx, ny, t0, t1, orig.common.handle, geos);
|
||
let extend_end = t_click >= 0.5;
|
||
|
||
let best = if extend_end {
|
||
ts.into_iter()
|
||
.filter(|&t| t > 1.0 + 1e-6)
|
||
.min_by(|x, y| x.partial_cmp(y).unwrap())
|
||
} else {
|
||
ts.into_iter()
|
||
.filter(|&t| t < -1e-6)
|
||
.max_by(|x, y| x.partial_cmp(y).unwrap())
|
||
};
|
||
|
||
let best_t = best?;
|
||
let new_param = t0 + span * best_t;
|
||
let mut e = orig.clone();
|
||
e.common.handle = Handle::NULL;
|
||
if extend_end {
|
||
e.end_parameter = new_param;
|
||
} else {
|
||
e.start_parameter = new_param;
|
||
}
|
||
Some(EntityType::Ellipse(e))
|
||
}
|
||
|
||
/// Generate preview points for an ellipse arc.
|
||
fn ellipse_pts(
|
||
cx: f64,
|
||
cy: f64,
|
||
a: f64,
|
||
b: f64,
|
||
nx: f64,
|
||
ny: f64,
|
||
t0: f64,
|
||
t1: f64,
|
||
z: f64,
|
||
) -> Vec<[f32; 3]> {
|
||
let span = t1 - t0;
|
||
let steps = (span.abs() * 20.0).ceil().max(4.0) as usize;
|
||
(0..=steps)
|
||
.map(|i| {
|
||
let t = t0 + span * (i as f64 / steps as f64);
|
||
let lx = a * t.cos();
|
||
let ly = b * t.sin();
|
||
[
|
||
(cx + lx * nx - ly * ny) as f32,
|
||
z as f32,
|
||
(cy + lx * ny + ly * nx) as f32,
|
||
]
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
// ── Spline trim / extend ──────────────────────────────────────────────────
|
||
|
||
/// Find normalised t-params ∈ [0,1] where a Spline intersects boundary geos.
|
||
/// Uses sampled polyline segments for intersection detection.
|
||
fn spline_seg_ts(spl: &SplineEnt, target: Handle, geos: &[Geo]) -> Vec<f64> {
|
||
let bs = match spline_to_bspline(spl) {
|
||
Some(b) => b,
|
||
None => return vec![],
|
||
};
|
||
let (t0, t1) = bs.range_tuple();
|
||
let range = t1 - t0;
|
||
if range < 1e-12 {
|
||
return vec![];
|
||
}
|
||
|
||
let (ts_spl, pts) = spline_sample_xy(spl, 64);
|
||
let mut out = vec![];
|
||
for i in 0..pts.len().saturating_sub(1) {
|
||
let ax = pts[i][0];
|
||
let ay = pts[i][1];
|
||
let bx = pts[i + 1][0];
|
||
let by = pts[i + 1][1];
|
||
let seg_ts = line_seg_ts(ax, ay, bx, by, target, geos);
|
||
for u in seg_ts {
|
||
// u is a t-param on this polyline segment; map to spline knot range, then normalise.
|
||
let t_spline = ts_spl[i] + u * (ts_spl[i + 1] - ts_spl[i]);
|
||
out.push(t_to_rel(t_spline, t0, t1));
|
||
}
|
||
}
|
||
out.sort_by(|a, b| a.partial_cmp(b).unwrap());
|
||
out.dedup_by(|a, b| (*a - *b).abs() < 1e-4);
|
||
out
|
||
}
|
||
|
||
/// Trim a Spline entity. Returns surviving spline pieces (one or two).
|
||
fn trim_spline(spl: &SplineEnt, ts: &[f64], t_click: f64) -> Vec<EntityType> {
|
||
let bs = match spline_to_bspline(spl) {
|
||
Some(b) => b,
|
||
None => return vec![],
|
||
};
|
||
let (t0, t1) = bs.range_tuple();
|
||
|
||
trim_intervals(ts, t_click)
|
||
.into_iter()
|
||
.filter_map(|(ta, tb)| {
|
||
let t_lo = t0 + ta * (t1 - t0);
|
||
let t_hi = t0 + tb * (t1 - t0);
|
||
if t_hi - t_lo < 1e-9 {
|
||
return None;
|
||
}
|
||
let mut piece = bs.clone();
|
||
let right = piece.cut(t_lo); // piece = [t0..t_lo] (discarded), right = [t_lo..t1]
|
||
let mut right = right;
|
||
let _tail = right.cut(t_hi); // right = [t_lo..t_hi], _tail discarded
|
||
Some(EntityType::Spline(bspline_to_spline(&right, spl)))
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
/// Extend a Spline toward the nearest boundary (nearest endpoint to pick).
|
||
fn extend_spline(spl: &SplineEnt, t_click: f64, geos: &[Geo]) -> Option<EntityType> {
|
||
// Sample spline and treat it like a polyline; look for intersections beyond
|
||
// the current start (t<0 virtual) or end (t>1 virtual).
|
||
// For splines we simply find whether the start (t=0) or end (t=1) is closer
|
||
// to the click, then walk along that tangent direction to the nearest boundary.
|
||
let bs = spline_to_bspline(spl)?;
|
||
let (t0, t1) = bs.range_tuple();
|
||
let extend_end = t_click >= 0.5;
|
||
|
||
// Tangent at the endpoint (numerical, Δ = 1e-4 of range)
|
||
let delta = (t1 - t0) * 1e-4;
|
||
let (ep_t, tang_dir) = if extend_end {
|
||
let p0 = bs.subs(t1 - delta);
|
||
let p1 = bs.subs(t1);
|
||
(t1, [p1.x - p0.x, p1.y - p0.y])
|
||
} else {
|
||
let p0 = bs.subs(t0);
|
||
let p1 = bs.subs(t0 + delta);
|
||
(t0, [p0.x - p1.x, p0.y - p1.y]) // reverse for "before start"
|
||
};
|
||
let ep = bs.subs(ep_t);
|
||
let (dx, dy) = (tang_dir[0], tang_dir[1]);
|
||
let len = (dx * dx + dy * dy).sqrt();
|
||
if len < 1e-12 {
|
||
return None;
|
||
}
|
||
let (dx, dy) = (dx / len, dy / len);
|
||
|
||
// Shoot a ray from the endpoint along the tangent and find nearest boundary.
|
||
let ray_end_x = ep.x + dx * TRIM_EXTENT;
|
||
let ray_end_y = ep.y + dy * TRIM_EXTENT;
|
||
let seg_ts = line_seg_ts(ep.x, ep.y, ray_end_x, ray_end_y, spl.common.handle, geos);
|
||
|
||
let best_t = seg_ts.into_iter().filter(|&t| t > 1e-6).reduce(f64::min)?;
|
||
|
||
let hit_x = ep.x + best_t * (ray_end_x - ep.x) * TRIM_EXTENT;
|
||
let hit_y = ep.y + best_t * (ray_end_y - ep.y) * TRIM_EXTENT;
|
||
|
||
// Add a new control point at the hit location by appending/prepending.
|
||
let z = spl.control_points.first().map(|v| v.z).unwrap_or(0.0);
|
||
let mut new_spl = spl.clone();
|
||
new_spl.common.handle = Handle::NULL;
|
||
new_spl.fit_points.clear();
|
||
if extend_end {
|
||
new_spl
|
||
.control_points
|
||
.push(acadrust::types::Vector3::new(hit_x, hit_y, z));
|
||
} else {
|
||
new_spl
|
||
.control_points
|
||
.insert(0, acadrust::types::Vector3::new(hit_x, hit_y, z));
|
||
}
|
||
// Rebuild knots (uniform) for the extended control polygon.
|
||
let degree = new_spl.degree as usize;
|
||
let n = new_spl.control_points.len();
|
||
let kv = truck_modeling::KnotVec::uniform_knot(degree, n - 1);
|
||
new_spl.knots = kv.iter().copied().collect();
|
||
Some(EntityType::Spline(new_spl))
|
||
}
|
||
|
||
// ── Trim helpers ──────────────────────────────────────────────────────────
|
||
|
||
/// Remove the t-interval containing `t_click` from sorted ts. Returns surviving pieces.
|
||
fn trim_intervals(ts: &[f64], t_click: f64) -> Vec<(f64, f64)> {
|
||
let mut bounds = vec![0.0f64];
|
||
bounds.extend_from_slice(ts);
|
||
bounds.push(1.0);
|
||
bounds.dedup_by(|a, b| (*a - *b).abs() < 1e-6);
|
||
|
||
let remove = bounds
|
||
.windows(2)
|
||
.position(|w| t_click >= w[0] - 1e-6 && t_click <= w[1] + 1e-6);
|
||
|
||
bounds
|
||
.windows(2)
|
||
.enumerate()
|
||
.filter(|(idx, _)| Some(*idx) != remove)
|
||
.filter(|(_, w)| (w[1] - w[0]) > 1e-6)
|
||
.map(|(_, w)| (w[0], w[1]))
|
||
.collect()
|
||
}
|
||
|
||
fn lerp2(p1: [f64; 2], p2: [f64; 2], t: f64) -> [f64; 2] {
|
||
[p1[0] + t * (p2[0] - p1[0]), p1[1] + t * (p2[1] - p1[1])]
|
||
}
|
||
|
||
/// Trim a Line entity. Returns the surviving line segments.
|
||
fn trim_line(orig: &LineEnt, ts: &[f64], t_click: f64) -> Vec<EntityType> {
|
||
let p1 = [orig.start.x, orig.start.y];
|
||
let p2 = [orig.end.x, orig.end.y];
|
||
let z = orig.start.z;
|
||
trim_intervals(ts, t_click)
|
||
.into_iter()
|
||
.filter_map(|(ta, tb)| {
|
||
let a = lerp2(p1, p2, ta);
|
||
let b = lerp2(p1, p2, tb);
|
||
if (b[0] - a[0]).hypot(b[1] - a[1]) < 1e-6 {
|
||
return None;
|
||
}
|
||
let mut l = orig.clone();
|
||
l.common.handle = Handle::NULL;
|
||
l.start = Vector3::new(a[0], a[1], z);
|
||
l.end = Vector3::new(b[0], b[1], z);
|
||
Some(EntityType::Line(l))
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
/// Trim an Arc entity. Returns the surviving arc segments.
|
||
fn trim_arc(orig: &ArcEnt, ts: &[f64], t_click: f64) -> Vec<EntityType> {
|
||
let a0 = orig.start_angle;
|
||
let a1 = orig.end_angle;
|
||
let span = {
|
||
let s = norm(a1) - norm(a0);
|
||
if s <= 0.0 {
|
||
s + TAU
|
||
} else {
|
||
s
|
||
}
|
||
};
|
||
let angle_at = |t: f64| norm(a0) + span * t;
|
||
|
||
trim_intervals(ts, t_click)
|
||
.into_iter()
|
||
.filter_map(|(ta, tb)| {
|
||
if (tb - ta).abs() < 1e-6 {
|
||
return None;
|
||
}
|
||
let mut a = orig.clone();
|
||
a.common.handle = Handle::NULL;
|
||
a.start_angle = angle_at(ta);
|
||
a.end_angle = angle_at(tb);
|
||
Some(EntityType::Arc(a))
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
// ── Extend helpers ────────────────────────────────────────────────────────
|
||
|
||
/// Extend the first or last segment of an LwPolyline to the nearest boundary.
|
||
/// Click point (DXF XY) determines which end to extend.
|
||
fn extend_lwpoly(
|
||
poly: &LwPolyline,
|
||
click_x: f64,
|
||
click_y: f64,
|
||
geos: &[Geo],
|
||
) -> Option<EntityType> {
|
||
let n = poly.vertices.len();
|
||
if n < 2 {
|
||
return None;
|
||
}
|
||
|
||
let first = &poly.vertices[0];
|
||
let second = &poly.vertices[1];
|
||
let last = &poly.vertices[n - 1];
|
||
let prev = &poly.vertices[n - 2];
|
||
|
||
let d_first = (first.location.x - click_x).hypot(first.location.y - click_y);
|
||
let d_last = (last.location.x - click_x).hypot(last.location.y - click_y);
|
||
let extend_end = d_last <= d_first;
|
||
|
||
// Extract the terminal segment as a virtual line.
|
||
let (ax, ay, bx, by) = if extend_end {
|
||
(
|
||
prev.location.x,
|
||
prev.location.y,
|
||
last.location.x,
|
||
last.location.y,
|
||
)
|
||
} else {
|
||
(
|
||
second.location.x,
|
||
second.location.y,
|
||
first.location.x,
|
||
first.location.y,
|
||
)
|
||
};
|
||
|
||
let (dx, dy) = (bx - ax, by - ay);
|
||
let len2 = dx * dx + dy * dy;
|
||
if len2 < 1e-12 {
|
||
return None;
|
||
}
|
||
|
||
// t_click on the segment: 0 = ax/ay, 1 = bx/by. We're extending beyond t=1.
|
||
let target = poly.common.handle;
|
||
let mut best_t = f64::INFINITY;
|
||
|
||
for geo in geos {
|
||
match geo {
|
||
Geo::Line { handle, p1, p2 } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
let (ex, ey) = (p2[0] - p1[0], p2[1] - p1[1]);
|
||
if let Some((t, u)) = ll(ax, ay, dx, dy, p1[0], p1[1], ex, ey) {
|
||
if (-1e-9..=1.0 + 1e-9).contains(&u) && t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
Geo::Arc {
|
||
handle,
|
||
cx,
|
||
cy,
|
||
r,
|
||
a0,
|
||
a1,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for t in lc(ax, ay, dx, dy, *cx, *cy, *r) {
|
||
let ix = ax + t * dx;
|
||
let iy = ay + t * dy;
|
||
if in_arc((iy - cy).atan2(ix - cx), *a0, *a1) && t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
Geo::Circle { handle, cx, cy, r } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for t in lc(ax, ay, dx, dy, *cx, *cy, *r) {
|
||
if t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
Geo::Ray {
|
||
handle,
|
||
bx: rbx,
|
||
by: rby,
|
||
dx: rdx,
|
||
dy: rdy,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
if let Some((t, u)) = ll(ax, ay, dx, dy, *rbx, *rby, *rdx, *rdy) {
|
||
if u >= -1e-9 && t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
Geo::InfLine {
|
||
handle,
|
||
bx: ibx,
|
||
by: iby,
|
||
dx: idx,
|
||
dy: idy,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
if let Some((t, _)) = ll(ax, ay, dx, dy, *ibx, *iby, *idx, *idy) {
|
||
if t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
Geo::Ellipse {
|
||
handle,
|
||
cx,
|
||
cy,
|
||
a,
|
||
b,
|
||
nx,
|
||
ny,
|
||
t0,
|
||
t1,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for (t, t_ell) in le(ax, ay, dx, dy, *cx, *cy, *a, *b, *nx, *ny) {
|
||
if in_arc(t_ell, *t0, *t1) && t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
Geo::Spline { handle, segs } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for (p1, p2) in segs {
|
||
let ex = p2[0] - p1[0];
|
||
let ey = p2[1] - p1[1];
|
||
if let Some((t, u)) = ll(ax, ay, dx, dy, p1[0], p1[1], ex, ey) {
|
||
if (-1e-9..=1.0 + 1e-9).contains(&u) && t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if !best_t.is_finite() {
|
||
return None;
|
||
}
|
||
|
||
let new_x = ax + best_t * dx;
|
||
let new_y = ay + best_t * dy;
|
||
let mut new_poly = poly.clone();
|
||
new_poly.common.handle = Handle::NULL;
|
||
if extend_end {
|
||
let last_v = new_poly.vertices.last_mut()?;
|
||
last_v.location.x = new_x;
|
||
last_v.location.y = new_y;
|
||
} else {
|
||
let first_v = new_poly.vertices.first_mut()?;
|
||
first_v.location.x = new_x;
|
||
first_v.location.y = new_y;
|
||
}
|
||
Some(EntityType::LwPolyline(new_poly))
|
||
}
|
||
|
||
/// Extend a Line to the nearest boundary on the extended side.
|
||
/// t_click < 0.5 → extend start (look for t < 0); t_click ≥ 0.5 → extend end (t > 1).
|
||
fn extend_line(orig: &LineEnt, t_click: f64, geos: &[Geo]) -> Option<EntityType> {
|
||
let ax = orig.start.x;
|
||
let ay = orig.start.y;
|
||
let bx = orig.end.x;
|
||
let by = orig.end.y;
|
||
let (dx, dy) = (bx - ax, by - ay);
|
||
let target = orig.common.handle;
|
||
let extend_end = t_click >= 0.5;
|
||
|
||
let mut best_t = if extend_end {
|
||
f64::INFINITY
|
||
} else {
|
||
f64::NEG_INFINITY
|
||
};
|
||
|
||
for geo in geos {
|
||
match geo {
|
||
Geo::Line { handle, p1, p2 } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
let (ex, ey) = (p2[0] - p1[0], p2[1] - p1[1]);
|
||
if let Some((t, u)) = ll(ax, ay, dx, dy, p1[0], p1[1], ex, ey) {
|
||
if !(-1e-9..=1.0 + 1e-9).contains(&u) {
|
||
continue;
|
||
}
|
||
if extend_end && t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
if !extend_end && t < -1e-6 && t > best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
Geo::Arc {
|
||
handle,
|
||
cx,
|
||
cy,
|
||
r,
|
||
a0,
|
||
a1,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for t in lc(ax, ay, dx, dy, *cx, *cy, *r) {
|
||
let ix = ax + t * dx;
|
||
let iy = ay + t * dy;
|
||
if !in_arc((iy - cy).atan2(ix - cx), *a0, *a1) {
|
||
continue;
|
||
}
|
||
if extend_end && t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
if !extend_end && t < -1e-6 && t > best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
Geo::Circle { handle, cx, cy, r } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for t in lc(ax, ay, dx, dy, *cx, *cy, *r) {
|
||
if extend_end && t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
if !extend_end && t < -1e-6 && t > best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
Geo::Ray {
|
||
handle,
|
||
bx: rbx,
|
||
by: rby,
|
||
dx: rdx,
|
||
dy: rdy,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
if let Some((t, u)) = ll(ax, ay, dx, dy, *rbx, *rby, *rdx, *rdy) {
|
||
if u >= -1e-9 {
|
||
// only forward along the Ray
|
||
if extend_end && t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
if !extend_end && t < -1e-6 && t > best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
Geo::InfLine {
|
||
handle,
|
||
bx: ibx,
|
||
by: iby,
|
||
dx: idx,
|
||
dy: idy,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
if let Some((t, _u)) = ll(ax, ay, dx, dy, *ibx, *iby, *idx, *idy) {
|
||
if extend_end && t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
if !extend_end && t < -1e-6 && t > best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
Geo::Ellipse {
|
||
handle,
|
||
cx: ecx,
|
||
cy: ecy,
|
||
a,
|
||
b,
|
||
nx,
|
||
ny,
|
||
t0: et0,
|
||
t1: et1,
|
||
} => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for (t, t_ell) in le(ax, ay, dx, dy, *ecx, *ecy, *a, *b, *nx, *ny) {
|
||
if !in_arc(t_ell, *et0, *et1) {
|
||
continue;
|
||
}
|
||
if extend_end && t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
if !extend_end && t < -1e-6 && t > best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
Geo::Spline { handle, segs } => {
|
||
if *handle == target {
|
||
continue;
|
||
}
|
||
for (p1, p2) in segs {
|
||
let ex = p2[0] - p1[0];
|
||
let ey = p2[1] - p1[1];
|
||
if let Some((t, u)) = ll(ax, ay, dx, dy, p1[0], p1[1], ex, ey) {
|
||
if !(-1e-9..=1.0 + 1e-9).contains(&u) {
|
||
continue;
|
||
}
|
||
if extend_end && t > 1.0 + 1e-6 && t < best_t {
|
||
best_t = t;
|
||
}
|
||
if !extend_end && t < -1e-6 && t > best_t {
|
||
best_t = t;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if !best_t.is_finite() {
|
||
return None;
|
||
}
|
||
let mut line = orig.clone();
|
||
line.common.handle = Handle::NULL;
|
||
let new_x = ax + best_t * dx;
|
||
let new_y = ay + best_t * dy;
|
||
if extend_end {
|
||
line.end = Vector3::new(new_x, new_y, orig.end.z);
|
||
} else {
|
||
line.start = Vector3::new(new_x, new_y, orig.start.z);
|
||
}
|
||
Some(EntityType::Line(line))
|
||
}
|
||
|
||
/// Trim a Ray entity.
|
||
/// Virtual t ∈ [0,1]: t=0 → base_point, t=1 → base + TRIM_EXTENT * dir.
|
||
/// Surviving pieces become Lines (finite) or Rays (still semi-infinite).
|
||
fn trim_ray(orig: &RayEnt, ts: &[f64], t_click: f64) -> Vec<EntityType> {
|
||
let bx = orig.base_point.x;
|
||
let by = orig.base_point.y;
|
||
let bz = orig.base_point.z;
|
||
let dx = orig.direction.x;
|
||
let dy = orig.direction.y;
|
||
let dz = orig.direction.z;
|
||
let pt = |t: f64| {
|
||
[
|
||
bx + t * dx * TRIM_EXTENT,
|
||
by + t * dy * TRIM_EXTENT,
|
||
bz + t * dz * TRIM_EXTENT,
|
||
]
|
||
};
|
||
|
||
trim_intervals(ts, t_click)
|
||
.into_iter()
|
||
.filter_map(|(ta, tb)| {
|
||
let pa = pt(ta);
|
||
let pb = pt(tb);
|
||
if (pb[0] - pa[0]).hypot(pb[1] - pa[1]) < 1e-6 {
|
||
return None;
|
||
}
|
||
|
||
if tb > INF_T {
|
||
// Still extends to infinity → remains a Ray with new base
|
||
let r = RayEnt::new(Vector3::new(pa[0], pa[1], pa[2]), Vector3::new(dx, dy, dz));
|
||
let mut r = r;
|
||
r.common = orig.common.clone();
|
||
r.common.handle = Handle::NULL;
|
||
Some(EntityType::Ray(r))
|
||
} else {
|
||
// Finite segment → Line
|
||
let mut l = LineEnt {
|
||
common: orig.common.clone(),
|
||
..LineEnt::new()
|
||
};
|
||
l.common.handle = Handle::NULL;
|
||
l.start = Vector3::new(pa[0], pa[1], pa[2]);
|
||
l.end = Vector3::new(pb[0], pb[1], pb[2]);
|
||
Some(EntityType::Line(l))
|
||
}
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
/// Trim an XLine entity.
|
||
/// Virtual t ∈ [0,1]: t=0 → base - dir*TRIM_EXTENT, t=0.5 → base, t=1 → base + dir*TRIM_EXTENT.
|
||
/// Surviving pieces become Lines (finite), Rays (one infinite end), or the original XLine (both ends).
|
||
fn trim_xline(orig: &XLineEnt, ts: &[f64], t_click: f64) -> Vec<EntityType> {
|
||
let bx = orig.base_point.x;
|
||
let by = orig.base_point.y;
|
||
let bz = orig.base_point.z;
|
||
let dx = orig.direction.x;
|
||
let dy = orig.direction.y;
|
||
let dz = orig.direction.z;
|
||
// Point at virtual t: scale factor s = 2t - 1 ∈ [-1, +1]
|
||
let pt = |t: f64| {
|
||
let s = 2.0 * t - 1.0;
|
||
[
|
||
bx + s * dx * TRIM_EXTENT,
|
||
by + s * dy * TRIM_EXTENT,
|
||
bz + s * dz * TRIM_EXTENT,
|
||
]
|
||
};
|
||
|
||
trim_intervals(ts, t_click)
|
||
.into_iter()
|
||
.filter_map(|(ta, tb)| {
|
||
let pa = pt(ta);
|
||
let pb = pt(tb);
|
||
let ext_neg = ta < 1.0 - INF_T; // extends toward -infinity
|
||
let ext_pos = tb > INF_T; // extends toward +infinity
|
||
|
||
match (ext_neg, ext_pos) {
|
||
(true, true) => {
|
||
// Whole XLine survived (shouldn't happen after a real trim)
|
||
let mut x = orig.clone();
|
||
x.common.handle = Handle::NULL;
|
||
Some(EntityType::XLine(x))
|
||
}
|
||
(true, false) => {
|
||
// Extends toward -infinity: Ray at pb pointing in -dir
|
||
let r = RayEnt::new(
|
||
Vector3::new(pb[0], pb[1], pb[2]),
|
||
Vector3::new(-dx, -dy, -dz),
|
||
);
|
||
let mut r = r;
|
||
r.common = orig.common.clone();
|
||
r.common.handle = Handle::NULL;
|
||
Some(EntityType::Ray(r))
|
||
}
|
||
(false, true) => {
|
||
// Extends toward +infinity: Ray at pa pointing in +dir
|
||
let r =
|
||
RayEnt::new(Vector3::new(pa[0], pa[1], pa[2]), Vector3::new(dx, dy, dz));
|
||
let mut r = r;
|
||
r.common = orig.common.clone();
|
||
r.common.handle = Handle::NULL;
|
||
Some(EntityType::Ray(r))
|
||
}
|
||
(false, false) => {
|
||
// Finite segment
|
||
let mut l = LineEnt {
|
||
common: orig.common.clone(),
|
||
..LineEnt::new()
|
||
};
|
||
l.common.handle = Handle::NULL;
|
||
l.start = Vector3::new(pa[0], pa[1], pa[2]);
|
||
l.end = Vector3::new(pb[0], pb[1], pb[2]);
|
||
Some(EntityType::Line(l))
|
||
}
|
||
}
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
// ── Point-generation helpers ──────────────────────────────────────────────
|
||
|
||
const DIM_RED: [f32; 4] = [1.0, 0.3, 0.3, 0.6];
|
||
|
||
fn line_pts(l: &LineEnt) -> Vec<[f32; 3]> {
|
||
vec![
|
||
[l.start.x as f32, l.start.y as f32, l.start.z as f32],
|
||
[l.end.x as f32, l.end.y as f32, l.end.z as f32],
|
||
]
|
||
}
|
||
|
||
fn arc_pts(cx: f64, cy: f64, r: f64, a0: f64, a1: f64, y: f64) -> Vec<[f32; 3]> {
|
||
let span = {
|
||
let s = norm(a1) - norm(a0);
|
||
if s <= 0.0 {
|
||
s + TAU
|
||
} else {
|
||
s
|
||
}
|
||
};
|
||
let steps = (span.abs() * 20.0).ceil().max(4.0) as usize;
|
||
(0..=steps)
|
||
.map(|i| {
|
||
let ang = norm(a0) + span * (i as f64 / steps as f64);
|
||
[
|
||
(cx + r * ang.cos()) as f32,
|
||
y as f32,
|
||
(cy + r * ang.sin()) as f32,
|
||
]
|
||
})
|
||
.collect()
|
||
}
|
||
|
||
fn entity_pts(e: &EntityType) -> Vec<[f32; 3]> {
|
||
match e {
|
||
EntityType::Line(l) => line_pts(l),
|
||
EntityType::Arc(a) => arc_pts(
|
||
a.center.x,
|
||
a.center.y,
|
||
a.radius,
|
||
a.start_angle,
|
||
a.end_angle,
|
||
a.center.y,
|
||
),
|
||
EntityType::Ellipse(e) => {
|
||
let a = (e.major_axis.x.powi(2) + e.major_axis.y.powi(2)).sqrt();
|
||
if a < 1e-9 {
|
||
return vec![];
|
||
}
|
||
let b = a * e.minor_axis_ratio;
|
||
let (nx, ny) = (e.major_axis.x / a, e.major_axis.y / a);
|
||
let t0 = e.start_parameter;
|
||
let mut t1 = e.end_parameter;
|
||
if t1 <= t0 {
|
||
t1 += TAU;
|
||
}
|
||
ellipse_pts(e.center.x, e.center.y, a, b, nx, ny, t0, t1, e.center.z)
|
||
}
|
||
EntityType::Spline(s) => spline_pts_wire(s),
|
||
EntityType::LwPolyline(p) => {
|
||
let elev = p.elevation as f32;
|
||
let n = p.vertices.len();
|
||
let seg_count = if p.is_closed { n } else { n.saturating_sub(1) };
|
||
let mut pts = Vec::with_capacity(seg_count * 2);
|
||
for i in 0..seg_count {
|
||
let v0 = &p.vertices[i];
|
||
let v1 = &p.vertices[(i + 1) % n];
|
||
pts.push([v0.location.x as f32, elev, v0.location.y as f32]);
|
||
pts.push([v1.location.x as f32, elev, v1.location.y as f32]);
|
||
}
|
||
pts
|
||
}
|
||
// For preview, show a 20-unit section of semi-infinite results
|
||
EntityType::Ray(r) => {
|
||
let bx = r.base_point.x;
|
||
let by = r.base_point.y;
|
||
let bz = r.base_point.z;
|
||
let far_x = bx + r.direction.x * 20.0;
|
||
let far_y = by + r.direction.y * 20.0;
|
||
let far_z = bz + r.direction.z * 20.0;
|
||
vec![
|
||
[bx as f32, bz as f32, by as f32],
|
||
[far_x as f32, far_z as f32, far_y as f32],
|
||
]
|
||
}
|
||
_ => vec![],
|
||
}
|
||
}
|
||
|
||
// ══════════════════════════════════════════════════════════════════════════
|
||
// TrimCommand
|
||
// ══════════════════════════════════════════════════════════════════════════
|
||
|
||
pub struct TrimCommand {
|
||
all_entities: Vec<EntityType>,
|
||
geos: Vec<Geo>,
|
||
}
|
||
|
||
impl TrimCommand {
|
||
pub fn new(all_entities: Vec<EntityType>) -> Self {
|
||
let geos = build_geos(&all_entities);
|
||
Self { all_entities, geos }
|
||
}
|
||
}
|
||
|
||
impl CadCommand for TrimCommand {
|
||
fn name(&self) -> &'static str {
|
||
"TRIM"
|
||
}
|
||
|
||
fn prompt(&self) -> String {
|
||
"TRIM Click segment to remove [Enter=done]:".into()
|
||
}
|
||
|
||
fn needs_entity_pick(&self) -> bool {
|
||
true
|
||
}
|
||
|
||
fn on_entity_pick(&mut self, handle: Handle, pt: Vec3) -> CmdResult {
|
||
if handle.is_null() {
|
||
return CmdResult::NeedPoint;
|
||
}
|
||
|
||
let entity = self
|
||
.all_entities
|
||
.iter()
|
||
.find(|e| e.common().handle == handle);
|
||
|
||
let result: Option<Vec<EntityType>> = match entity {
|
||
Some(EntityType::Line(l)) => {
|
||
let ax = l.start.x;
|
||
let ay = l.start.y;
|
||
let bx = l.end.x;
|
||
let by = l.end.y;
|
||
let ts = line_seg_ts(ax, ay, bx, by, handle, &self.geos);
|
||
if ts.is_empty() {
|
||
return CmdResult::NeedPoint;
|
||
}
|
||
let dx = bx - ax;
|
||
let dy = by - ay;
|
||
let len2 = dx * dx + dy * dy;
|
||
let t_click = if len2 > 1e-12 {
|
||
((pt.x as f64 - ax) * dx + (pt.y as f64 - ay) * dy) / len2
|
||
} else {
|
||
0.5
|
||
};
|
||
Some(trim_line(l, &ts, t_click))
|
||
}
|
||
Some(EntityType::Arc(a)) => {
|
||
let cx = a.center.x;
|
||
let cy = a.center.y;
|
||
let a0 = a.start_angle;
|
||
let a1 = a.end_angle;
|
||
let ts = arc_seg_ts(cx, cy, a.radius, a0, a1, handle, &self.geos);
|
||
if ts.is_empty() {
|
||
return CmdResult::NeedPoint;
|
||
}
|
||
let click_angle = (pt.y as f64 - cy).atan2(pt.x as f64 - cx);
|
||
let t_click = arc_t(click_angle, a0, a1);
|
||
Some(trim_arc(a, &ts, t_click))
|
||
}
|
||
Some(EntityType::Ray(r)) => {
|
||
// Virtual segment: base → base + dir * TRIM_EXTENT (t ∈ [0,1])
|
||
let bx = r.base_point.x;
|
||
let by = r.base_point.y;
|
||
let ex = bx + r.direction.x * TRIM_EXTENT;
|
||
let ey = by + r.direction.y * TRIM_EXTENT;
|
||
let ts = line_seg_ts(bx, by, ex, ey, handle, &self.geos);
|
||
if ts.is_empty() {
|
||
return CmdResult::NeedPoint;
|
||
}
|
||
let dx = r.direction.x * TRIM_EXTENT;
|
||
let dy = r.direction.y * TRIM_EXTENT;
|
||
let len2 = dx * dx + dy * dy;
|
||
let t_click = if len2 > 1e-12 {
|
||
((pt.x as f64 - bx) * dx + (pt.y as f64 - by) * dy) / len2
|
||
} else {
|
||
0.5
|
||
};
|
||
Some(trim_ray(r, &ts, t_click))
|
||
}
|
||
Some(EntityType::XLine(x)) => {
|
||
// Virtual segment: base - dir*TRIM_EXTENT → base + dir*TRIM_EXTENT
|
||
let bx = x.base_point.x - x.direction.x * TRIM_EXTENT;
|
||
let by = x.base_point.y - x.direction.y * TRIM_EXTENT;
|
||
let ex = x.base_point.x + x.direction.x * TRIM_EXTENT;
|
||
let ey = x.base_point.y + x.direction.y * TRIM_EXTENT;
|
||
let ts = line_seg_ts(bx, by, ex, ey, handle, &self.geos);
|
||
if ts.is_empty() {
|
||
return CmdResult::NeedPoint;
|
||
}
|
||
let dx = ex - bx;
|
||
let dy = ey - by;
|
||
let len2 = dx * dx + dy * dy;
|
||
let t_click = if len2 > 1e-12 {
|
||
((pt.x as f64 - bx) * dx + (pt.y as f64 - by) * dy) / len2
|
||
} else {
|
||
0.5
|
||
};
|
||
Some(trim_xline(x, &ts, t_click))
|
||
}
|
||
Some(EntityType::Ellipse(e)) => {
|
||
let a = (e.major_axis.x.powi(2) + e.major_axis.y.powi(2)).sqrt();
|
||
if a < 1e-9 {
|
||
return CmdResult::NeedPoint;
|
||
}
|
||
let b = a * e.minor_axis_ratio;
|
||
let (nx, ny) = (e.major_axis.x / a, e.major_axis.y / a);
|
||
let t0 = e.start_parameter;
|
||
let mut t1 = e.end_parameter;
|
||
if t1 <= t0 {
|
||
t1 += TAU;
|
||
}
|
||
let ts = ellipse_seg_ts(
|
||
e.center.x, e.center.y, a, b, nx, ny, t0, t1, handle, &self.geos,
|
||
);
|
||
if ts.is_empty() {
|
||
return CmdResult::NeedPoint;
|
||
}
|
||
// t_click: project mouse onto ellipse local param
|
||
let rx = pt.x as f64 - e.center.x;
|
||
let ry = pt.y as f64 - e.center.y;
|
||
let xl = rx * nx + ry * ny;
|
||
let yl = -rx * ny + ry * nx;
|
||
let t_ell = yl.atan2(xl);
|
||
let t_click = arc_t(t_ell, t0, t1);
|
||
Some(trim_ellipse(e, &ts, t_click))
|
||
}
|
||
Some(EntityType::Spline(s)) => {
|
||
let ts = spline_seg_ts(s, handle, &self.geos);
|
||
if ts.is_empty() {
|
||
return CmdResult::NeedPoint;
|
||
}
|
||
let t_click = spline_nearest_t(s, pt.x as f64, pt.y as f64)
|
||
.and_then(|t_actual| {
|
||
let bs = spline_to_bspline(s)?;
|
||
let (t0, t1) = bs.range_tuple();
|
||
Some(t_to_rel(t_actual, t0, t1))
|
||
})
|
||
.unwrap_or(0.5);
|
||
Some(trim_spline(s, &ts, t_click))
|
||
}
|
||
_ => None,
|
||
};
|
||
|
||
if let Some(new_entities) = result {
|
||
// Snapshot is updated in on_entity_replaced once we know the real handles.
|
||
// Pre-stage: remove old entry now so geos exclude it immediately.
|
||
if let Some(pos) = self
|
||
.all_entities
|
||
.iter()
|
||
.position(|e| e.common().handle == handle)
|
||
{
|
||
self.all_entities.remove(pos);
|
||
// Add pieces with NULL handles as geometry-only placeholders.
|
||
self.all_entities.extend(new_entities.clone());
|
||
self.geos = build_geos(&self.all_entities);
|
||
}
|
||
CmdResult::ReplaceEntity(handle, new_entities)
|
||
} else {
|
||
self.command_line_hint();
|
||
CmdResult::NeedPoint
|
||
}
|
||
}
|
||
|
||
fn on_entity_replaced(&mut self, _old: Handle, new_handles: &[acadrust::Handle]) {
|
||
// The last new_handles.len() entries in all_entities are the trimmed pieces
|
||
// that were appended with NULL handles. Assign their real document handles.
|
||
let start = self.all_entities.len().saturating_sub(new_handles.len());
|
||
for (e, &h) in self.all_entities[start..]
|
||
.iter_mut()
|
||
.zip(new_handles.iter())
|
||
{
|
||
match e {
|
||
EntityType::Line(l) => l.common.handle = h,
|
||
EntityType::Arc(a) => a.common.handle = h,
|
||
EntityType::Ray(r) => r.common.handle = h,
|
||
EntityType::XLine(x) => x.common.handle = h,
|
||
EntityType::Ellipse(e) => e.common.handle = h,
|
||
EntityType::Spline(s) => s.common.handle = h,
|
||
_ => {}
|
||
}
|
||
}
|
||
self.geos = build_geos(&self.all_entities);
|
||
}
|
||
|
||
fn on_hover_entity(&mut self, handle: Handle, pt: Vec3) -> Vec<WireModel> {
|
||
if handle.is_null() {
|
||
return vec![];
|
||
}
|
||
|
||
let entity = self
|
||
.all_entities
|
||
.iter()
|
||
.find(|e| e.common().handle == handle);
|
||
|
||
match entity {
|
||
Some(EntityType::Line(l)) => {
|
||
let ax = l.start.x;
|
||
let ay = l.start.y;
|
||
let bx = l.end.x;
|
||
let by = l.end.y;
|
||
let ts = line_seg_ts(ax, ay, bx, by, handle, &self.geos);
|
||
if ts.is_empty() {
|
||
return vec![];
|
||
}
|
||
let dx = bx - ax;
|
||
let dy = by - ay;
|
||
let len2 = dx * dx + dy * dy;
|
||
let t_click = if len2 > 1e-12 {
|
||
((pt.x as f64 - ax) * dx + (pt.y as f64 - ay) * dy) / len2
|
||
} else {
|
||
0.5
|
||
};
|
||
let survivors = trim_line(l, &ts, t_click);
|
||
let p1 = [l.start.x as f32, l.start.y as f32, l.start.y as f32];
|
||
let p2 = [l.end.x as f32, l.end.y as f32, l.end.y as f32];
|
||
let removed = WireModel::solid("trim_rm".into(), vec![p1, p2], DIM_RED, false);
|
||
let mut out = vec![removed];
|
||
for (i, e) in survivors.iter().enumerate() {
|
||
let pts = entity_pts(e);
|
||
out.push(WireModel::solid(
|
||
format!("trim_keep_{i}"),
|
||
pts,
|
||
WireModel::CYAN,
|
||
false,
|
||
));
|
||
}
|
||
out
|
||
}
|
||
Some(EntityType::Arc(a)) => {
|
||
let cx = a.center.x;
|
||
let cy = a.center.y;
|
||
let a0 = a.start_angle;
|
||
let a1 = a.end_angle;
|
||
let ts = arc_seg_ts(cx, cy, a.radius, a0, a1, handle, &self.geos);
|
||
if ts.is_empty() {
|
||
return vec![];
|
||
}
|
||
let click_angle = (pt.y as f64 - cy).atan2(pt.x as f64 - cx);
|
||
let t_click = arc_t(click_angle, a0, a1);
|
||
let survivors = trim_arc(a, &ts, t_click);
|
||
let orig_pts = arc_pts(cx, cy, a.radius, a0, a1, a.center.y);
|
||
let removed = WireModel::solid("trim_rm".into(), orig_pts, DIM_RED, false);
|
||
let mut out = vec![removed];
|
||
for (i, e) in survivors.iter().enumerate() {
|
||
let pts = entity_pts(e);
|
||
out.push(WireModel::solid(
|
||
format!("trim_keep_{i}"),
|
||
pts,
|
||
WireModel::CYAN,
|
||
false,
|
||
));
|
||
}
|
||
out
|
||
}
|
||
Some(EntityType::Ray(r)) => {
|
||
let bx = r.base_point.x;
|
||
let by = r.base_point.y;
|
||
let ex = bx + r.direction.x * TRIM_EXTENT;
|
||
let ey = by + r.direction.y * TRIM_EXTENT;
|
||
let ts = line_seg_ts(bx, by, ex, ey, handle, &self.geos);
|
||
if ts.is_empty() {
|
||
return vec![];
|
||
}
|
||
let dx = r.direction.x * TRIM_EXTENT;
|
||
let dy = r.direction.y * TRIM_EXTENT;
|
||
let len2 = dx * dx + dy * dy;
|
||
let t_click = if len2 > 1e-12 {
|
||
((pt.x as f64 - bx) * dx + (pt.y as f64 - by) * dy) / len2
|
||
} else {
|
||
0.5
|
||
};
|
||
let survivors = trim_ray(r, &ts, t_click);
|
||
// Show a finite preview section (20 units) for the original ray
|
||
let far = [
|
||
(bx + r.direction.x * 20.0) as f32,
|
||
(by + r.direction.y * 20.0) as f32,
|
||
r.base_point.z as f32,
|
||
];
|
||
let base = [bx as f32, by as f32, r.base_point.z as f32];
|
||
let removed = WireModel::solid("trim_rm".into(), vec![base, far], DIM_RED, false);
|
||
let mut out = vec![removed];
|
||
for (i, e) in survivors.iter().enumerate() {
|
||
let pts = entity_pts(e);
|
||
out.push(WireModel::solid(
|
||
format!("trim_keep_{i}"),
|
||
pts,
|
||
WireModel::CYAN,
|
||
false,
|
||
));
|
||
}
|
||
out
|
||
}
|
||
Some(EntityType::XLine(x)) => {
|
||
let bx = x.base_point.x;
|
||
let by = x.base_point.y;
|
||
let ex_start = bx - x.direction.x * TRIM_EXTENT;
|
||
let ey_start = by - x.direction.y * TRIM_EXTENT;
|
||
let ex_end = bx + x.direction.x * TRIM_EXTENT;
|
||
let ey_end = by + x.direction.y * TRIM_EXTENT;
|
||
let ts = line_seg_ts(ex_start, ey_start, ex_end, ey_end, handle, &self.geos);
|
||
if ts.is_empty() {
|
||
return vec![];
|
||
}
|
||
let dx = ex_end - ex_start;
|
||
let dy = ey_end - ey_start;
|
||
let len2 = dx * dx + dy * dy;
|
||
let t_click = if len2 > 1e-12 {
|
||
((pt.x as f64 - ex_start) * dx + (pt.y as f64 - ey_start) * dy) / len2
|
||
} else {
|
||
0.5
|
||
};
|
||
let survivors = trim_xline(x, &ts, t_click);
|
||
let neg = [
|
||
(bx - x.direction.x * 20.0) as f32,
|
||
(by - x.direction.y * 20.0) as f32,
|
||
x.base_point.z as f32,
|
||
];
|
||
let pos_pt = [
|
||
(bx + x.direction.x * 20.0) as f32,
|
||
(by + x.direction.y * 20.0) as f32,
|
||
x.base_point.z as f32,
|
||
];
|
||
let removed = WireModel::solid("trim_rm".into(), vec![neg, pos_pt], DIM_RED, false);
|
||
let mut out = vec![removed];
|
||
for (i, e) in survivors.iter().enumerate() {
|
||
let pts = entity_pts(e);
|
||
out.push(WireModel::solid(
|
||
format!("trim_keep_{i}"),
|
||
pts,
|
||
WireModel::CYAN,
|
||
false,
|
||
));
|
||
}
|
||
out
|
||
}
|
||
Some(EntityType::Ellipse(e)) => {
|
||
let a = (e.major_axis.x.powi(2) + e.major_axis.y.powi(2)).sqrt();
|
||
if a < 1e-9 {
|
||
return vec![];
|
||
}
|
||
let b = a * e.minor_axis_ratio;
|
||
let (nx, ny) = (e.major_axis.x / a, e.major_axis.y / a);
|
||
let t0 = e.start_parameter;
|
||
let mut t1 = e.end_parameter;
|
||
if t1 <= t0 {
|
||
t1 += TAU;
|
||
}
|
||
let ts = ellipse_seg_ts(
|
||
e.center.x, e.center.y, a, b, nx, ny, t0, t1, handle, &self.geos,
|
||
);
|
||
if ts.is_empty() {
|
||
return vec![];
|
||
}
|
||
let rx = pt.x as f64 - e.center.x;
|
||
let ry = pt.y as f64 - e.center.y;
|
||
let xl = rx * nx + ry * ny;
|
||
let yl = -rx * ny + ry * nx;
|
||
let t_click = arc_t(yl.atan2(xl), t0, t1);
|
||
let survivors = trim_ellipse(e, &ts, t_click);
|
||
let orig_pts =
|
||
ellipse_pts(e.center.x, e.center.y, a, b, nx, ny, t0, t1, e.center.z);
|
||
let removed = WireModel::solid("trim_rm".into(), orig_pts, DIM_RED, false);
|
||
let mut out = vec![removed];
|
||
for (i, ent) in survivors.iter().enumerate() {
|
||
let pts = entity_pts(ent);
|
||
out.push(WireModel::solid(
|
||
format!("trim_keep_{i}"),
|
||
pts,
|
||
WireModel::CYAN,
|
||
false,
|
||
));
|
||
}
|
||
out
|
||
}
|
||
Some(EntityType::Spline(s)) => {
|
||
let ts = spline_seg_ts(s, handle, &self.geos);
|
||
if ts.is_empty() {
|
||
return vec![];
|
||
}
|
||
let t_click = spline_nearest_t(s, pt.x as f64, pt.y as f64)
|
||
.and_then(|t_actual| {
|
||
let bs = spline_to_bspline(s)?;
|
||
let (t0, t1) = bs.range_tuple();
|
||
Some(t_to_rel(t_actual, t0, t1))
|
||
})
|
||
.unwrap_or(0.5);
|
||
let orig_pts = spline_pts_wire(s);
|
||
let removed = WireModel::solid("trim_rm".into(), orig_pts, DIM_RED, false);
|
||
let survivors = trim_spline(s, &ts, t_click);
|
||
let mut out = vec![removed];
|
||
for (i, ent) in survivors.iter().enumerate() {
|
||
let pts = entity_pts(ent);
|
||
out.push(WireModel::solid(
|
||
format!("trim_keep_{i}"),
|
||
pts,
|
||
WireModel::CYAN,
|
||
false,
|
||
));
|
||
}
|
||
out
|
||
}
|
||
_ => vec![],
|
||
}
|
||
}
|
||
|
||
fn on_point(&mut self, _pt: Vec3) -> CmdResult {
|
||
CmdResult::NeedPoint
|
||
}
|
||
fn on_enter(&mut self) -> CmdResult {
|
||
CmdResult::Cancel
|
||
}
|
||
fn on_escape(&mut self) -> CmdResult {
|
||
CmdResult::Cancel
|
||
}
|
||
}
|
||
|
||
impl TrimCommand {
|
||
fn command_line_hint(&self) {}
|
||
}
|
||
|
||
// ══════════════════════════════════════════════════════════════════════════
|
||
// ExtendCommand
|
||
// ══════════════════════════════════════════════════════════════════════════
|
||
|
||
pub struct ExtendCommand {
|
||
all_entities: Vec<EntityType>,
|
||
geos: Vec<Geo>,
|
||
/// (old_handle, new_entity_with_updated_geometry) — set in on_entity_pick,
|
||
/// consumed in on_entity_replaced to patch the snapshot with both new handle + geometry.
|
||
pending_replace: Option<(Handle, EntityType)>,
|
||
}
|
||
|
||
impl ExtendCommand {
|
||
pub fn new(all_entities: Vec<EntityType>) -> Self {
|
||
let geos = build_geos(&all_entities);
|
||
Self {
|
||
all_entities,
|
||
geos,
|
||
pending_replace: None,
|
||
}
|
||
}
|
||
}
|
||
|
||
impl CadCommand for ExtendCommand {
|
||
fn name(&self) -> &'static str {
|
||
"EXTEND"
|
||
}
|
||
|
||
fn prompt(&self) -> String {
|
||
"EXTEND Click near end of object to extend [Enter=done]:".into()
|
||
}
|
||
|
||
fn needs_entity_pick(&self) -> bool {
|
||
true
|
||
}
|
||
|
||
fn on_entity_pick(&mut self, handle: Handle, pt: Vec3) -> CmdResult {
|
||
if handle.is_null() {
|
||
return CmdResult::NeedPoint;
|
||
}
|
||
|
||
let entity = self
|
||
.all_entities
|
||
.iter()
|
||
.find(|e| e.common().handle == handle);
|
||
|
||
let result: Option<EntityType> = match entity {
|
||
Some(EntityType::Line(l)) => {
|
||
let ax = l.start.x;
|
||
let ay = l.start.y;
|
||
let bx = l.end.x;
|
||
let by = l.end.y;
|
||
let dx = bx - ax;
|
||
let dy = by - ay;
|
||
let len2 = dx * dx + dy * dy;
|
||
let t_click = if len2 > 1e-12 {
|
||
((pt.x as f64 - ax) * dx + (pt.y as f64 - ay) * dy) / len2
|
||
} else {
|
||
0.5
|
||
};
|
||
extend_line(l, t_click, &self.geos)
|
||
}
|
||
Some(EntityType::Ellipse(e)) => {
|
||
let t0 = e.start_parameter;
|
||
let mut t1 = e.end_parameter;
|
||
if t1 <= t0 {
|
||
t1 += TAU;
|
||
}
|
||
let span = t1 - t0;
|
||
let a = (e.major_axis.x.powi(2) + e.major_axis.y.powi(2)).sqrt();
|
||
if a < 1e-9 {
|
||
return CmdResult::NeedPoint;
|
||
}
|
||
let (nx, ny) = (e.major_axis.x / a, e.major_axis.y / a);
|
||
let rx = pt.x as f64 - e.center.x;
|
||
let ry = pt.y as f64 - e.center.y;
|
||
let xl = rx * nx + ry * ny;
|
||
let yl = -rx * ny + ry * nx;
|
||
let t_click = arc_t(yl.atan2(xl), t0, t1);
|
||
let _ = span;
|
||
extend_ellipse(e, t_click, &self.geos)
|
||
}
|
||
Some(EntityType::LwPolyline(p)) => {
|
||
extend_lwpoly(p, pt.x as f64, pt.y as f64, &self.geos)
|
||
}
|
||
Some(EntityType::Spline(s)) => {
|
||
let t_click = spline_nearest_t(s, pt.x as f64, pt.y as f64)
|
||
.and_then(|t_actual| {
|
||
let bs = spline_to_bspline(s)?;
|
||
let (t0, t1) = bs.range_tuple();
|
||
Some(t_to_rel(t_actual, t0, t1))
|
||
})
|
||
.unwrap_or(0.5);
|
||
extend_spline(s, t_click, &self.geos)
|
||
}
|
||
_ => None,
|
||
};
|
||
|
||
if let Some(new_entity) = result {
|
||
// Save the extended entity so on_entity_replaced can patch the snapshot
|
||
// with both the new geometry and the real document handle.
|
||
self.pending_replace = Some((handle, new_entity.clone()));
|
||
CmdResult::ReplaceEntity(handle, vec![new_entity])
|
||
} else {
|
||
CmdResult::NeedPoint
|
||
}
|
||
}
|
||
|
||
fn on_entity_replaced(&mut self, old: Handle, new_handles: &[acadrust::Handle]) {
|
||
if let (Some(&new_handle), Some((pending_old, mut new_entity))) =
|
||
(new_handles.first(), self.pending_replace.take())
|
||
{
|
||
if pending_old == old {
|
||
// Update the snapshot entry: replace geometry + assign real handle.
|
||
match &mut new_entity {
|
||
EntityType::Line(l) => l.common.handle = new_handle,
|
||
EntityType::Ellipse(e) => e.common.handle = new_handle,
|
||
EntityType::Spline(s) => s.common.handle = new_handle,
|
||
EntityType::LwPolyline(p) => p.common.handle = new_handle,
|
||
_ => {}
|
||
}
|
||
if let Some(pos) = self
|
||
.all_entities
|
||
.iter()
|
||
.position(|e| e.common().handle == old)
|
||
{
|
||
self.all_entities[pos] = new_entity;
|
||
}
|
||
self.geos = build_geos(&self.all_entities);
|
||
}
|
||
}
|
||
}
|
||
|
||
fn on_hover_entity(&mut self, handle: Handle, pt: Vec3) -> Vec<WireModel> {
|
||
if handle.is_null() {
|
||
return vec![];
|
||
}
|
||
|
||
let entity = self
|
||
.all_entities
|
||
.iter()
|
||
.find(|e| e.common().handle == handle);
|
||
match entity {
|
||
Some(EntityType::Line(l)) => {
|
||
let ax = l.start.x;
|
||
let ay = l.start.y;
|
||
let bx = l.end.x;
|
||
let by = l.end.y;
|
||
let dx = bx - ax;
|
||
let dy = by - ay;
|
||
let len2 = dx * dx + dy * dy;
|
||
let t_click = if len2 > 1e-12 {
|
||
((pt.x as f64 - ax) * dx + (pt.y as f64 - ay) * dy) / len2
|
||
} else {
|
||
0.5
|
||
};
|
||
if let Some(ext) = extend_line(l, t_click, &self.geos) {
|
||
return vec![WireModel::solid(
|
||
"extend_prev".into(),
|
||
entity_pts(&ext),
|
||
WireModel::CYAN,
|
||
false,
|
||
)];
|
||
}
|
||
}
|
||
Some(EntityType::Ellipse(e)) => {
|
||
let a = (e.major_axis.x.powi(2) + e.major_axis.y.powi(2)).sqrt();
|
||
if a >= 1e-9 {
|
||
let (nx, ny) = (e.major_axis.x / a, e.major_axis.y / a);
|
||
let t0 = e.start_parameter;
|
||
let mut t1 = e.end_parameter;
|
||
if t1 <= t0 {
|
||
t1 += TAU;
|
||
}
|
||
let rx = pt.x as f64 - e.center.x;
|
||
let ry = pt.y as f64 - e.center.y;
|
||
let xl = rx * nx + ry * ny;
|
||
let yl = -rx * ny + ry * nx;
|
||
let t_click = arc_t(yl.atan2(xl), t0, t1);
|
||
if let Some(ext) = extend_ellipse(e, t_click, &self.geos) {
|
||
return vec![WireModel::solid(
|
||
"extend_prev".into(),
|
||
entity_pts(&ext),
|
||
WireModel::CYAN,
|
||
false,
|
||
)];
|
||
}
|
||
}
|
||
}
|
||
Some(EntityType::LwPolyline(p)) => {
|
||
if let Some(ext) = extend_lwpoly(p, pt.x as f64, pt.y as f64, &self.geos) {
|
||
return vec![WireModel::solid(
|
||
"extend_prev".into(),
|
||
entity_pts(&ext),
|
||
WireModel::CYAN,
|
||
false,
|
||
)];
|
||
}
|
||
}
|
||
Some(EntityType::Spline(s)) => {
|
||
let t_click = spline_nearest_t(s, pt.x as f64, pt.y as f64)
|
||
.and_then(|t_actual| {
|
||
let bs = spline_to_bspline(s)?;
|
||
let (t0, t1) = bs.range_tuple();
|
||
Some(t_to_rel(t_actual, t0, t1))
|
||
})
|
||
.unwrap_or(0.5);
|
||
if let Some(ext) = extend_spline(s, t_click, &self.geos) {
|
||
return vec![WireModel::solid(
|
||
"extend_prev".into(),
|
||
entity_pts(&ext),
|
||
WireModel::CYAN,
|
||
false,
|
||
)];
|
||
}
|
||
}
|
||
_ => {}
|
||
}
|
||
vec![]
|
||
}
|
||
|
||
fn on_point(&mut self, _pt: Vec3) -> CmdResult {
|
||
CmdResult::NeedPoint
|
||
}
|
||
fn on_enter(&mut self) -> CmdResult {
|
||
CmdResult::Cancel
|
||
}
|
||
fn on_escape(&mut self) -> CmdResult {
|
||
CmdResult::Cancel
|
||
}
|
||
}
|
||
|
||
|
||
// ── Autocomplete registry ─────────────────────────────────
|
||
inventory::submit!(crate::command::CommandRegistration { names: &["EX", "EXTEND"] }); // ExtendCommand
|
||
inventory::submit!(crate::command::CommandRegistration { names: &["TR", "TRIM"] }); // TrimCommand
|