@tsparticles/interaction-particles-attract/umd/Attractor.js

tsParticles attract particles interaction

(function (factory) {
    if (typeof module === "object" && typeof module.exports === "object") {
        var v = factory(require, exports);
        if (v !== undefined) module.exports = v;
    }
    else if (typeof define === "function" && define.amd) {
        define(["require", "exports", "@tsparticles/engine"], factory);
    }
})(function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    exports.Attractor = void 0;
    const engine_1 = require("@tsparticles/engine");
    const attractFactor = 1000, identity = 1;
    class Attractor extends engine_1.ParticlesInteractorBase {
        constructor(container) {
            super(container);
        }
        clear() {
        }
        init() {
        }
        interact(p1) {
            const container = this.container;
            if (p1.attractDistance === undefined) {
                p1.attractDistance = (0, engine_1.getRangeValue)(p1.options.move.attract.distance) * container.retina.pixelRatio;
            }
            const distance = p1.attractDistance, pos1 = p1.getPosition(), query = container.particles.quadTree.queryCircle(pos1, distance);
            for (const p2 of query) {
                if (p1 === p2 || !p2.options.move.attract.enable || p2.destroyed || p2.spawning) {
                    continue;
                }
                const pos2 = p2.getPosition(), { dx, dy } = (0, engine_1.getDistances)(pos1, pos2), rotate = p1.options.move.attract.rotate, ax = dx / (rotate.x * attractFactor), ay = dy / (rotate.y * attractFactor), p1Factor = p2.size.value / p1.size.value, p2Factor = identity / p1Factor;
                p1.velocity.x -= ax * p1Factor;
                p1.velocity.y -= ay * p1Factor;
                p2.velocity.x += ax * p2Factor;
                p2.velocity.y += ay * p2Factor;
            }
        }
        isEnabled(particle) {
            return particle.options.move.attract.enable;
        }
        reset() {
        }
    }
    exports.Attractor = Attractor;
});