48 lines
767 B
JavaScript
48 lines
767 B
JavaScript
import {compose, Property} from '@avocado/core';
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import {Shape} from './shape';
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const decorate = compose(
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Property('radius', {
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track: true,
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}),
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);
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export class CircleShape extends decorate(Shape) {
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constructor() {
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super();
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this.on('radiusChanged', () => {
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this.emit('aabbChanged');
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});
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}
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get aabb() {
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const [x, y] = this.position;
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const halfRadius = this.radius / 2;
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return [
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x - halfRadius,
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y - halfRadius,
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x + halfRadius,
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y + halfRadius,
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];
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}
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fromJSON(json) {
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super.fromJSON(json);
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if (json.radius) {
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this.radius = json.radius;
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}
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return this;
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}
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toJSON() {
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return {
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...super.toJSON(),
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type: 'circle',
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radius: this.radius,
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}
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}
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}
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