Snap: Center-/Quadrant-Snaps für Kreise + Bögen (Bogen nur im Spannbereich) + Bogen-Endpunkte, mit Tests
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@@ -12,7 +12,7 @@
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import { describe, it, expect } from "vitest";
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import { computeSnap, wallLayerBoundarySegments } from "./snapping";
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import { DEFAULT_SNAP } from "./types";
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import type { Project, Vec2, Wall } from "../model/types";
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import type { Drawing2D, Project, Vec2, Wall } from "../model/types";
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/** Minimalprojekt mit einer dreischichtigen Wand (0.1 / 0.15 / 0.2 m). */
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function wallProject(wall: Wall): Project {
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@@ -134,3 +134,95 @@ describe("computeSnap — fängt auf Wand-Schichttrennlinien", () => {
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expect(result!.point.y).toBeCloseTo(0.025, 6);
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});
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});
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// ── Kreis-/Bogen-Snaps (Center/Quadrant/Bogen-Endpunkt) ──────────────────────
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/** Minimalprojekt mit gegebenen 2D-Geometrien auf dem Geschoss „eg". */
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function drawProject(geoms: Drawing2D["geom"][]): Project {
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return {
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id: "t",
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name: "T",
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lineStyles: [],
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hatches: [],
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components: [{ id: "c", name: "C", color: "#ccc", hatchId: "none", joinPriority: 10 }],
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wallTypes: [],
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drawingLevels: [
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{
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id: "eg",
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name: "EG",
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kind: "floor",
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visible: true,
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locked: false,
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floorHeight: 2.6,
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cutHeight: 1.0,
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baseElevation: 0,
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},
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],
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layers: [{ code: "20", name: "Zeichnung", color: "#0a0a0a", lw: 0.5, visible: true, locked: false }],
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walls: [],
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doors: [],
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openings: [],
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ceilings: [],
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stairs: [],
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rooms: [],
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drawings2d: geoms.map((geom, i) => ({
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id: `d${i}`,
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type: "drawing2d" as const,
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levelId: "eg",
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categoryCode: "20",
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geom,
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})),
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context: [],
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};
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}
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function snapAt(project: Project, raw: Vec2, settings = DEFAULT_SNAP) {
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return computeSnap({
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raw,
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project,
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levelId: "eg",
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visibleCodes: new Set(["20"]),
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settings,
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draftPoints: [],
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lastPoint: null,
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pxPerMeter: 100,
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shift: false,
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ctrl: false,
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});
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}
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describe("computeSnap — Kreis/Bogen", () => {
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const withCenter = { ...DEFAULT_SNAP, center: true };
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it("fängt Mittelpunkt + Quadranten eines Kreises (center aktiv)", () => {
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const p = drawProject([{ shape: "circle", center: { x: 0, y: 0 }, r: 1 }]);
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const c = snapAt(p, { x: 0, y: 0 }, withCenter);
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expect(c?.kind).toBe("center");
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expect(c!.point.x).toBeCloseTo(0, 6);
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expect(c!.point.y).toBeCloseTo(0, 6);
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const q = snapAt(p, { x: 1, y: 0 }, withCenter);
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expect(q?.kind).toBe("quadrant");
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expect(q!.point.x).toBeCloseTo(1, 6);
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expect(q!.point.y).toBeCloseTo(0, 6);
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});
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it("fängt Bogen-Endpunkte (endpoint per Default aktiv)", () => {
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// Viertelbogen um (5,0), r=1, 0…90° → Endpunkte (6,0) und (5,1).
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const p = drawProject([
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{ shape: "arc", center: { x: 5, y: 0 }, r: 1, a0: 0, a1: Math.PI / 2 },
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]);
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const e = snapAt(p, { x: 6, y: 0 });
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expect(e?.kind).toBe("endpoint");
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expect(e!.point.x).toBeCloseTo(6, 6);
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expect(e!.point.y).toBeCloseTo(0, 6);
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});
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it("bietet Quadranten AUSSERHALB der Bogen-Spanne NICHT an", () => {
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// Viertelbogen 0…90°: der West-Quadrant (4,0) liegt NICHT im Bogen.
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const p = drawProject([
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{ shape: "arc", center: { x: 5, y: 0 }, r: 1, a0: 0, a1: Math.PI / 2 },
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]);
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const r = snapAt(p, { x: 4, y: 0 }, withCenter);
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expect(r?.kind).not.toBe("quadrant");
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});
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});
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@@ -108,6 +108,28 @@ function collectSegments(input: SnapInput): Seg[] {
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return segs;
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}
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/** Kreis-/Bogen-Geometrie für Center-/Quadrant-/Endpunkt-Snaps. `arc=null` =
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* Vollkreis (keine Endpunkte, alle vier Quadranten). */
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interface CircleGeom {
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center: Vec2;
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r: number;
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arc: { a0: number; a1: number } | null;
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}
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/** Sammelt sichtbare Kreise/Bögen des aktiven Geschosses (aus `drawings2d`). */
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function collectCircles(input: SnapInput): CircleGeom[] {
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const out: CircleGeom[] = [];
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for (const d of input.project.drawings2d) {
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if (d.levelId !== input.levelId) continue;
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if (!input.visibleCodes.has(d.categoryCode)) continue;
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const g = d.geom;
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if (g.shape === "circle") out.push({ center: g.center, r: g.r, arc: null });
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else if (g.shape === "arc")
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out.push({ center: g.center, r: g.r, arc: { a0: g.a0, a1: g.a1 } });
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}
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return out;
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}
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/** Lotfußpunkt von p auf die Strecke a-b, auf das Segment geklemmt. */
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function perpFoot(p: Vec2, a: Vec2, b: Vec2): Vec2 {
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const dx = b.x - a.x, dy = b.y - a.y;
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@@ -184,6 +206,34 @@ export function computeSnap(input: SnapInput): SnapResult | null {
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for (const [a, b] of segs) consider(perpFoot(raw, a, b), "onEdge");
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}
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// Kreis-/Bogen-Snaps: Mittelpunkt + Quadranten (Ost/Nord/West/Süd); bei Bögen
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// nur die Quadranten IM Bogen-Bereich, plus die beiden Bogen-Endpunkte. Center/
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// Quadrant hängen an der `center`-Einstellung, die Endpunkte an `endpoint`.
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if (settings.center || settings.endpoint) {
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const TAU = Math.PI * 2;
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const norm = (x: number) => ((x % TAU) + TAU) % TAU;
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const onCircle = (c: CircleGeom, ang: number): Vec2 => ({
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x: c.center.x + c.r * Math.cos(ang),
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y: c.center.y + c.r * Math.sin(ang),
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});
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for (const c of collectCircles(input)) {
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if (settings.center) {
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consider(c.center, "center");
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// Volle CCW-Spanne (0 ⇒ Vollkreis); Quadrant nur, wenn im Bogen liegt.
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const sweep = c.arc ? norm(c.arc.a1 - c.arc.a0) || TAU : TAU;
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for (let q = 0; q < 4; q++) {
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const ang = q * (Math.PI / 2);
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if (c.arc && norm(ang - c.arc.a0) > sweep + 1e-9) continue;
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consider(onCircle(c, ang), "quadrant");
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}
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}
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if (settings.endpoint && c.arc) {
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consider(onCircle(c, c.arc.a0), "endpoint");
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consider(onCircle(c, c.arc.a1), "endpoint");
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}
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}
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}
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if (best) return best;
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// Ortho / Winkelraster (Projektion relativ zum letzten Punkt).
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