tsparticles
Version:
Easily create highly customizable particle, confetti and fireworks animations and use them as animated backgrounds for your website. Ready to use components available also for React, Vue.js (2.x and 3.x), Angular, Svelte, jQuery, Preact, Riot.js, Inferno.
163 lines (162 loc) • 7.6 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.AbsorberInstance = void 0;
const Utils_1 = require("../../Utils");
const Absorber_1 = require("./Options/Classes/Absorber");
const Core_1 = require("../../Core");
class AbsorberInstance {
constructor(absorbers, container, options, position) {
var _a, _b, _c;
this.absorbers = absorbers;
this.container = container;
this.initialPosition = position ? Core_1.Vector.create(position.x, position.y) : undefined;
if (options instanceof Absorber_1.Absorber) {
this.options = options;
}
else {
this.options = new Absorber_1.Absorber();
this.options.load(options);
}
this.dragging = false;
this.name = this.options.name;
this.opacity = this.options.opacity;
this.size = (0, Utils_1.getRangeValue)(this.options.size.value) * container.retina.pixelRatio;
this.mass = this.size * this.options.size.density * container.retina.reduceFactor;
const limit = this.options.size.limit;
this.limit = {
radius: limit.radius * container.retina.pixelRatio * container.retina.reduceFactor,
mass: limit.mass,
};
this.color = (_a = (0, Utils_1.colorToRgb)(this.options.color)) !== null && _a !== void 0 ? _a : {
b: 0,
g: 0,
r: 0,
};
this.position = (_c = (_b = this.initialPosition) === null || _b === void 0 ? void 0 : _b.copy()) !== null && _c !== void 0 ? _c : this.calcPosition();
}
attract(particle) {
const container = this.container;
const options = this.options;
if (options.draggable) {
const mouse = container.interactivity.mouse;
if (mouse.clicking && mouse.downPosition) {
const mouseDist = (0, Utils_1.getDistance)(this.position, mouse.downPosition);
if (mouseDist <= this.size) {
this.dragging = true;
}
}
else {
this.dragging = false;
}
if (this.dragging && mouse.position) {
this.position.x = mouse.position.x;
this.position.y = mouse.position.y;
}
}
const pos = particle.getPosition();
const { dx, dy, distance } = (0, Utils_1.getDistances)(this.position, pos);
const v = Core_1.Vector.create(dx, dy);
v.length = (this.mass / Math.pow(distance, 2)) * container.retina.reduceFactor;
if (distance < this.size + particle.getRadius()) {
const sizeFactor = particle.getRadius() * 0.033 * container.retina.pixelRatio;
if ((this.size > particle.getRadius() && distance < this.size - particle.getRadius()) ||
(particle.absorberOrbit !== undefined && particle.absorberOrbit.length < 0)) {
if (options.destroy) {
particle.destroy();
}
else {
particle.needsNewPosition = true;
this.updateParticlePosition(particle, v);
}
}
else {
if (options.destroy) {
particle.size.value -= sizeFactor;
}
this.updateParticlePosition(particle, v);
}
if (this.limit.radius <= 0 || this.size < this.limit.radius) {
this.size += sizeFactor;
}
if (this.limit.mass <= 0 || this.mass < this.limit.mass) {
this.mass += sizeFactor * this.options.size.density * container.retina.reduceFactor;
}
}
else {
this.updateParticlePosition(particle, v);
}
}
resize() {
const initialPosition = this.initialPosition;
this.position =
initialPosition && (0, Utils_1.isPointInside)(initialPosition, this.container.canvas.size)
? initialPosition
: this.calcPosition();
}
draw(context) {
context.translate(this.position.x, this.position.y);
context.beginPath();
context.arc(0, 0, this.size, 0, Math.PI * 2, false);
context.closePath();
context.fillStyle = (0, Utils_1.getStyleFromRgb)(this.color, this.opacity);
context.fill();
}
calcPosition() {
var _a, _b;
const container = this.container;
const percentPosition = this.options.position;
return Core_1.Vector.create(((0, Utils_1.getRangeValue)((_a = percentPosition === null || percentPosition === void 0 ? void 0 : percentPosition.x) !== null && _a !== void 0 ? _a : Math.random() * 100) / 100) * container.canvas.size.width, ((0, Utils_1.getRangeValue)((_b = percentPosition === null || percentPosition === void 0 ? void 0 : percentPosition.y) !== null && _b !== void 0 ? _b : Math.random() * 100) / 100) * container.canvas.size.height);
}
updateParticlePosition(particle, v) {
var _a;
if (particle.destroyed) {
return;
}
const container = this.container;
const canvasSize = container.canvas.size;
if (particle.needsNewPosition) {
particle.position.x = Math.floor(Math.random() * canvasSize.width);
particle.position.y = Math.floor(Math.random() * canvasSize.height);
particle.velocity.setTo(particle.initialVelocity);
particle.absorberOrbit = undefined;
particle.needsNewPosition = false;
}
if (this.options.orbits) {
if (particle.absorberOrbit === undefined) {
particle.absorberOrbit = Core_1.Vector.create(0, 0);
particle.absorberOrbit.length = (0, Utils_1.getDistance)(particle.getPosition(), this.position);
particle.absorberOrbit.angle = Math.random() * Math.PI * 2;
}
if (particle.absorberOrbit.length <= this.size && !this.options.destroy) {
const minSize = Math.min(canvasSize.width, canvasSize.height);
particle.absorberOrbit.length = minSize * (1 + (Math.random() * 0.2 - 0.1));
}
if (particle.absorberOrbitDirection === undefined) {
particle.absorberOrbitDirection =
particle.velocity.x >= 0 ? "clockwise" : "counter-clockwise";
}
const orbitRadius = particle.absorberOrbit.length;
const orbitAngle = particle.absorberOrbit.angle;
const orbitDirection = particle.absorberOrbitDirection;
particle.velocity.x = 0;
particle.velocity.y = 0;
const updateFunc = {
x: orbitDirection === "clockwise" ? Math.cos : Math.sin,
y: orbitDirection === "clockwise" ? Math.sin : Math.cos,
};
particle.position.x = this.position.x + orbitRadius * updateFunc.x(orbitAngle);
particle.position.y = this.position.y + orbitRadius * updateFunc.y(orbitAngle);
particle.absorberOrbit.length -= v.length;
particle.absorberOrbit.angle +=
((((_a = particle.retina.moveSpeed) !== null && _a !== void 0 ? _a : 0) * container.retina.pixelRatio) / 100) *
container.retina.reduceFactor;
}
else {
const addV = Core_1.Vector.origin;
addV.length = v.length;
addV.angle = v.angle;
particle.velocity.addTo(addV);
}
}
}
exports.AbsorberInstance = AbsorberInstance;