58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
import { Vector } from '@doodle3d/cal';
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import transposeEvents from '../utils/transposeEvents.js';
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import { PIXEL_RATIO } from '../constants/general.js';
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import { convertEvent } from '../utils/pointerUtils.js';
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// import createDebug from 'debug';
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// const debug = createDebug('d3d:design:EraserPointer');
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export default class EraserPointer {
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constructor() {
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this.visible = true;
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this.active = true;
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this.depth = 20000;
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this.radius = 0;
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this.mousePosition = new Vector();
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this.erasing = false;
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this.showMouse = false;
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}
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onEvent = transposeEvents;
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dragStart({ position }) {
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this.erasing = true;
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this.mousePosition.copy(position);
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if (this.onChanged) this.onChanged();
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}
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dragEnd() {
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this.erasing = false;
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if (this.onChanged) this.onChanged();
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}
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pointerMove(event) {
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this.showMouse = event.pointerType === 'mouse';
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if (this.erasing || this.showMouse) {
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this.mousePosition.copy(convertEvent(event.target, event));
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if (this.onChanged) this.onChanged();
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}
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}
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pointerOut() {
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this.showMouse = false;
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if (this.onChanged) this.onChanged();
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}
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draw(context) {
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if (!this.erasing && !this.showMouse) return;
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const x = this.mousePosition.x * PIXEL_RATIO;
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const y = this.mousePosition.y * PIXEL_RATIO;
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const radius = this.radius * PIXEL_RATIO;
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const color = '#72bcd4';
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const alpha = this.erasing ? 1.0 : 0.25;
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const lineWidth = 2.0 * PIXEL_RATIO;
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context.strokeStyle = color;
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context.globalAlpha = alpha;
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context.lineWidth = lineWidth;
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context.beginPath();
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context.arc(x, y, radius, 0, Math.PI * 2.0);
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context.stroke();
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}
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}
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