29 lines
1.3 KiB
JavaScript
29 lines
1.3 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.CircleShape = void 0;
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const tsparticles_engine_1 = require("tsparticles-engine");
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class CircleShape {
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randomPosition(position, size, fill) {
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const generateTheta = (x, y) => {
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const u = (0, tsparticles_engine_1.getRandom)() / 4.0, theta = Math.atan((y / x) * Math.tan(2 * Math.PI * u)), v = (0, tsparticles_engine_1.getRandom)();
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if (v < 0.25) {
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return theta;
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}
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else if (v < 0.5) {
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return Math.PI - theta;
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}
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else if (v < 0.75) {
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return Math.PI + theta;
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}
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else {
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return -theta;
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}
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}, radius = (x, y, theta) => (x * y) / Math.sqrt(Math.pow((y * Math.cos(theta)), 2) + Math.pow((x * Math.sin(theta)), 2)), [a, b] = [size.width / 2, size.height / 2], randomTheta = generateTheta(a, b), maxRadius = radius(a, b, randomTheta), randomRadius = fill ? maxRadius * Math.sqrt((0, tsparticles_engine_1.getRandom)()) : maxRadius;
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return {
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x: position.x + randomRadius * Math.cos(randomTheta),
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y: position.y + randomRadius * Math.sin(randomTheta),
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};
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}
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}
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exports.CircleShape = CircleShape;
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