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This commit is contained in:
nora 2021-06-17 14:45:43 +02:00
parent add4166030
commit 78853473ff
5 changed files with 122 additions and 16 deletions
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35
src/draw/Particles.ts
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@ -1,11 +1,15 @@
import {Ctx} from "./MainDraw";
import Particle from "./classes/Particle";
import Particle, {colorFromCharge} from "./classes/Particle";
import Vector from "./classes/Vector";
import {CANVAS_HEIGHT, CANVAS_WIDTH} from "../App";
import {circle} from "./Shapes";
const particles: Particle[] = [];
let particles: Particle[] = [];
let mouseProperties: MouseProperties = {charge: 0, strength: 1, pos: new Vector()};
export function initParticles() {
particles = [];
const chargeToMass = [0.1, 1, 10];
for (let i = 0; i < 200; i++) {
const charge = Math.random() < 0.3 ? 0 : Math.random() < 0.5 ? 1 : -1;
@ -16,8 +20,19 @@ export function initParticles() {
}
}
interface MouseProperties {
charge: number,
strength: number,
pos: Vector
}
export function changeMouseProperties(transformer: (old: MouseProperties) => MouseProperties) {
mouseProperties = transformer(mouseProperties);
}
export function drawParticles(ctx: Ctx) {
particles.forEach(p => p.draw(ctx));
circle(ctx, mouseProperties.pos.x, mouseProperties.pos.y, 5, colorFromCharge(mouseProperties.charge));
}
export function updateParticles() {
@ -33,7 +48,7 @@ function calculateChargedForces() {
const innerParticle = particles[j];
if (innerParticle.charge !== 0) {
const dist = particle.position.distance(innerParticle.position);
if (dist < 1000 && dist > 0.30) {
if (dist < 300 && dist > 0.30) {
const f1 = innerParticle.position.sub(particle.position).scale(0.5 / dist ** 2);
if (particle.charge === innerParticle.charge) {
particle.applyForce(f1.negated());
@ -45,6 +60,20 @@ function calculateChargedForces() {
}
}
}
// mouse
const dist = particle.position.distance(mouseProperties.pos);
if (mouseProperties.charge !== 0 && dist < 10000 && dist > 0.30) {
const f1 = mouseProperties.pos
.sub(particle.position)
.scale(0.5 / dist ** 2)
.scale(mouseProperties.strength * 5);
if (particle.charge === mouseProperties.charge) {
particle.applyForce(f1.negated());
} else {
particle.applyForce(f1);
}
}
}
}
}