41 lines
1.3 KiB
JavaScript
41 lines
1.3 KiB
JavaScript
import { getRandom } from "tsparticles-engine";
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function randomSquareCoordinate(position, offset) {
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return position + offset * (getRandom() - 0.5);
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}
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export class SquareShape {
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randomPosition(position, size, fill) {
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if (fill) {
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return {
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x: randomSquareCoordinate(position.x, size.width),
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y: randomSquareCoordinate(position.y, size.height),
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};
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}
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else {
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const halfW = size.width / 2, halfH = size.height / 2, side = Math.floor(getRandom() * 4), v = (getRandom() - 0.5) * 2;
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switch (side) {
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case 0:
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return {
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x: position.x + v * halfW,
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y: position.y - halfH,
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};
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case 1:
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return {
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x: position.x - halfW,
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y: position.y + v * halfH,
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};
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case 2:
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return {
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x: position.x + v * halfW,
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y: position.y + halfH,
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};
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case 3:
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default:
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return {
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x: position.x + halfW,
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y: position.y + v * halfH,
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};
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}
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}
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}
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}
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