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// Daniel Shiffman
// http://codingtra.in
// http://patreon.com/codingtrain
// Code for: https://youtu.be/BjoM9oKOAKY
class Particle {
constructor() {
this.pos = createVector(random(width), random(height));
this.vel = createVector(0, 0);
this.acc = createVector(0, 0);
this.red = random(0, 255);
this.clr = {
r: random(0, 255),
g: random(0, 255),
b: random(0, 255)
};
this.redIter = 0.01;
this.maxspeed = 4;
this.prevPos = this.pos.copy();
}
update() {
this.vel.add(this.acc);
this.vel.limit(this.maxspeed);
this.pos.add(this.vel);
this.acc.mult(0);
// this.red += this.redIter;
}
follow(vectors) {
var x = floor(this.pos.x / scl);
var y = floor(this.pos.y / scl);
var index = x + y * cols;
var force = vectors[index];
this.applyForce(force);
}
applyForce(force) {
this.acc.add(force);
}
show() {
// let finalRed = noise(this.red);
stroke(this.clr.r, this.clr.g, this.clr.b, 10);
strokeWeight(1);
line(this.pos.x, this.pos.y, this.prevPos.x, this.prevPos.y);
this.updatePrev();
}
updatePrev() {
this.prevPos.x = this.pos.x;
this.prevPos.y = this.pos.y;
}
edges() {
if (this.pos.x > width) {
this.pos.x = 0;
this.updatePrev();
}
if (this.pos.x < 0) {
this.pos.x = width;
this.updatePrev();
}
if (this.pos.y > height) {
this.pos.y = 0;
this.updatePrev();
}
if (this.pos.y < 0) {
this.pos.y = height;
this.updatePrev();
}
}
}