Renamed JS folder and started learning Crystal

This commit is contained in:
plane000
2018-06-17 19:47:18 +01:00
parent 27998205c2
commit 348ba8e737
49 changed files with 4 additions and 0 deletions

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function Star() {
this.x = random(-width, width);
this.y = random(-height, height);
this.z = random(width);
this.pz = this.z;
this.update = function() {
this.z = this.z - speed;
if (this.z < 1) {
this.z = width;
this.x = random(-width, width);
this.y = random(-height, height);
this.pz = this.z;
}
}
this.show = function() {
fill(255);
noStroke();
var sx = map(this.x / this.z, 0, 1, 0, width);
var sy = map(this.y / this.z, 0, 1, 0, height);
var r = map(this.z, 0, width, 4, 0);
ellipse(sx, sy, r, r);
var px = map(this.x / this.pz, 0, 1, 0, width);
var py = map(this.y / this.pz, 0, 1, 0, height);
this.pz = this.z;
stroke(255);
line(px, py, sx, sy);
}
}

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var stars = [];
var speed;
function setup() {
createCanvas(600, 600);
for (var i = 0; i < 800; i++) {
stars[i] = new Star();
}
}
function draw() {
speed = map(mouseX, 0, width, 0, 20);
background(0);
translate(width / 2, height / 2);
for (var i = 0; i < stars.length; i++) {
stars[i].update();
stars[i].show();
}
}