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89 lines
2.2 KiB
89 lines
2.2 KiB
class Star extends Decoration{
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raysCount: number
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triangles: p5.Vector[][]
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innerRadius: number
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constructor(properties: object){
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super(properties);
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this.createTriangles();
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}
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get properties(): object{
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let obj = super.properties;
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obj['raysCount'] = this.raysCount;
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obj['innerRadius'] = this.innerRadius;
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return obj;
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}
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createTriangles(){
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this.triangles = [];
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let increment = p.TWO_PI / this.raysCount / 2,
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firstOuter = true;
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for (let i = 0; i < p.TWO_PI; i += increment){
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let x1 = p.sin(i),
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y1 = -p.cos(i),
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x2 = p.sin(i + increment),
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y2 = -p.cos(i + increment);
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if (firstOuter){
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x1 *= this.radius,
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y1 *= this.radius,
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x2 *= this.innerRadius,
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y2 *= this.innerRadius;
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} else {
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x2 *= this.radius,
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y2 *= this.radius,
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x1 *= this.innerRadius,
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y1 *= this.innerRadius;
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}
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firstOuter = !firstOuter;
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this.triangles.push([
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p.createVector(x1, y1),
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p.createVector(x2, y2),
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p.createVector(0, 0)
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]);
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}
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}
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brightness(value: number) {
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this.triangles.forEach((t, i) => {
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p.fill(0, 0, 0, value);
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p.triangle(t[0].x, t[0].y, t[1].x, t[1].y, t[2].x, t[2].y);
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});
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}
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display(pos?: p5.Vector, dim?: p5.Vector){
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super.display(pos, dim);
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p.noStroke();
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this.triangles.forEach((t, i) => {
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let color = this.colors[i % this.colors.length];
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p.fill(color);
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p.triangle(t[0].x, t[0].y, t[1].x, t[1].y, t[2].x, t[2].y);
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});
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if (this.mouseIsOver){
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this.brightness(70);
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}
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p.pop();
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}
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update(){
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super.update();
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}
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toJSON(index){
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let list = [
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"raysCount",
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"innerRadius"
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]
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let obj = super.toJSON(index);
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for (let item of list){
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obj[item] = this[item];
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}
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return obj;
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}
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} |