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-rw-r--r--sketch.js64
1 files changed, 64 insertions, 0 deletions
diff --git a/sketch.js b/sketch.js
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index 0000000..77a4899
--- /dev/null
+++ b/sketch.js
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+function v2(x, y) {
+ this.x = x;
+ this.y = y;
+}
+
+function gradient() {
+ this.color = [255, 0, 0];
+ this.index = 1;
+ this.direction = 1;
+}
+
+gradient.prototype.next = function() {
+ this.color[this.index] += this.direction;
+ if (this.color[this.index] == max(this.direction, 0) * 255) {
+ this.index = (this.index + 2) % 3;
+ this.direction *= -1;
+ }
+ return this.color;
+};
+
+let count = 250;
+let multiple = 1;
+let radius = 400;
+let step = 0.01;
+let center = new v2(radius, radius);
+
+let theta = 2 * Math.PI / count;
+
+let alpha = n => (theta * n) % count;
+
+let f_x = n => cos(alpha(n)) * radius + center.x;
+let f_y = n => sin(alpha(n)) * radius + center.y;
+
+let f = n => new v2(f_x(n), f_y(n));
+
+let canvasW = radius * 2;
+let canvasH = radius * 2;
+
+function setup() {
+ createCanvas(canvasW, canvasH);
+}
+
+let grad = new gradient();
+
+function draw() {
+ background(0);
+
+ fill(0);
+
+ c = grad.next();
+ stroke(c);
+
+ circle(center.x, center.y, radius * 2);
+
+ for (n = 0; n < count; n++)
+ {
+ p1 = f(n);
+ p2 = f(multiple * n);
+ stroke(c);
+ line(p1.x, p1.y, p2.x, p2.y);
+ }
+
+ multiple += step;
+}