tsparticles-engine
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.
40 lines (39 loc) • 2.22 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.Retina = void 0;
const NumberUtils_1 = require("../Utils/NumberUtils");
const Utils_1 = require("../Utils/Utils");
class Retina {
constructor(container) {
this.container = container;
this.pixelRatio = 1;
this.reduceFactor = 1;
}
init() {
const container = this.container, options = container.actualOptions;
this.pixelRatio = !options.detectRetina || (0, Utils_1.isSsr)() ? 1 : window.devicePixelRatio;
this.reduceFactor = 1;
const ratio = this.pixelRatio;
if (container.canvas.element) {
const element = container.canvas.element;
container.canvas.size.width = element.offsetWidth * ratio;
container.canvas.size.height = element.offsetHeight * ratio;
}
const particles = options.particles, moveOptions = particles.move;
this.attractDistance = (0, NumberUtils_1.getRangeValue)(moveOptions.attract.distance) * ratio;
this.maxSpeed = (0, NumberUtils_1.getRangeValue)(moveOptions.gravity.maxSpeed) * ratio;
this.sizeAnimationSpeed = (0, NumberUtils_1.getRangeValue)(particles.size.animation.speed) * ratio;
}
initParticle(particle) {
const options = particle.options, ratio = this.pixelRatio, moveOptions = options.move, moveDistance = moveOptions.distance, props = particle.retina;
props.attractDistance = (0, NumberUtils_1.getRangeValue)(moveOptions.attract.distance) * ratio;
props.moveDrift = (0, NumberUtils_1.getRangeValue)(moveOptions.drift) * ratio;
props.moveSpeed = (0, NumberUtils_1.getRangeValue)(moveOptions.speed) * ratio;
props.sizeAnimationSpeed = (0, NumberUtils_1.getRangeValue)(options.size.animation.speed) * ratio;
const maxDistance = props.maxDistance;
maxDistance.horizontal = moveDistance.horizontal !== undefined ? moveDistance.horizontal * ratio : undefined;
maxDistance.vertical = moveDistance.vertical !== undefined ? moveDistance.vertical * ratio : undefined;
props.maxSpeed = (0, NumberUtils_1.getRangeValue)(moveOptions.gravity.maxSpeed) * ratio;
}
}
exports.Retina = Retina;