mirror of
https://github.com/xibyte/jsketcher
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92 lines
No EOL
2.7 KiB
JavaScript
92 lines
No EOL
2.7 KiB
JavaScript
import {Tool} from './tool'
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import {EndPoint} from '../shapes/point'
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import {Ellipse} from '../shapes/ellipse'
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import Vector from '../../math/vector'
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export const STATE_POINT1 = 0;
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export const STATE_POINT2 = 1;
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export const STATE_RADIUS = 2;
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export class EllipseTool extends Tool {
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constructor(viewer) {
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super('ellipse', viewer);
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this.ellipse = null;
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this.state = STATE_POINT1;
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}
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restart() {
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this.ellipse = null;
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this.state = STATE_POINT1;
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this.sendHint('specify first major axis point')
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}
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cleanup(e) {
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this.viewer.cleanSnap();
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}
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point(e) {
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return this.viewer.snapped ? this.viewer.snapped : this.viewer.screenToModel(e);
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}
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mouseup(e) {
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switch (this.state) {
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case STATE_POINT1: {
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const p = this.point(e);
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this.ellipse = new Ellipse(new EndPoint(p.x, p.y), new EndPoint(p.x, p.y));
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this.snapIfNeed(this.ellipse.ep1);
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this.viewer.activeLayer.objects.push(this.ellipse);
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this.viewer.refresh();
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this.state = STATE_POINT2;
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this.sendHint('specify second major axis point');
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break;
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}
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case STATE_POINT2: {
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const p = this.point(e);
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this.ellipse.ep2.setFromPoint(p);
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this.snapIfNeed(this.ellipse.ep2);
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this.viewer.refresh();
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this.state = STATE_RADIUS;
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this.sendHint('specify minor axis radius');
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break;
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}
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case STATE_RADIUS:
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this.viewer.toolManager.releaseControl();
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}
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}
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mousemove(e) {
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const p = this.viewer.screenToModel(e);
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switch (this.state) {
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case STATE_POINT1:
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this.viewer.snap(p.x, p.y, []);
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break;
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case STATE_POINT2:
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this.ellipse.ep2.setFromPoint(this.viewer.screenToModel(e));
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this.ellipse.r.value = this.ellipse.radiusX * 0.5;
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this.viewer.snap(p.x, p.y, [this.ellipse.ep1, this.ellipse.ep2]);
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break;
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case STATE_RADIUS:
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const polarPoint = this.ellipse.toEllipseCoordinateSystem(p);
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let minorRadius = Ellipse.findMinorRadius(this.ellipse.radiusX, polarPoint.radius, polarPoint.angle);
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if (isNaN(minorRadius)) {
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const projAxis = new Vector(-(this.ellipse.ep2.y - this.ellipse.ep1.y), this.ellipse.ep2.x - this.ellipse.ep1.x);
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projAxis._normalize();
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const v = new Vector(this.ellipse.ep2.x - p.x, this.ellipse.ep2.y - p.y);
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minorRadius = Math.abs(projAxis.dot(v));
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}
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this.ellipse.r.set(minorRadius);
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if (!Tool.dumbMode(e)) {
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this.solveRequest(true);
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}
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break;
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}
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this.viewer.refresh();
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}
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solveRequest(rough) {
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this.solver = this.viewer.parametricManager.prepare([this.ellipse.r]);
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this.solver.solve(rough, 1);
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this.solver.sync();
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}
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} |