hexes

hexes/README.md

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+# hexes
+
+![output](export.gif)

hexes/hexes.pde

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+import gifAnimation.*;
+GifMaker gifExport;
+
+int loopFrames = 60;
+PVector maskOrigin;
+Float maskWidth = 250.0;
+float orbitWidth = 100.0;
+
+void setup() {
+  gifExport = new GifMaker(this, "export.gif", 30);
+  gifExport.setRepeat(0); // make it an "endless" animation
+
+  maskOrigin = new PVector();
+  smooth();
+  size(500, 500);
+  noStroke();  
+  colorMode(HSB, 100, 100, 100, 100);
+}
+
+void draw() {
+  background(0, 0, 100);
+  float phase = norm(frameCount % loopFrames, 0, loopFrames) * TWO_PI;
+  maskOrigin.x = sin(phase) * orbitWidth + width / 2.0;
+  maskOrigin.y = cos(phase) * orbitWidth + height / 2.0;
+  
+  float r = 16.0;
+  float w = 2.0 * sin(PI/3.0) * r;
+  boolean flip = false;
+  for (float x = 2.0 * r; x < width - r; x += w) {
+    flip = !flip;
+    for (float y = 3.0 * r; y < height - r; y+= (r * 2.0)) {
+      if (flip) {
+        drawHex(x, y - r, r);
+      } else {
+        drawHex(x, y, r);
+      }
+    } 
+  }
+  export();
+}
+
+void drawHex(float x, float y, float size) {
+  float n = 6.0;
+  float t = TWO_PI/n;
+  PVector hexOrigin = new PVector(x, y);
+  float d = hexOrigin.dist(maskOrigin);
+  float saturation = norm(d, maskWidth / 2.0, 0) * 200.0 * noise(x, y, 1);
+  float hue = map(noise(x, y), 0.0, 1.0, 55, 60);
+  
+  fill(hue, saturation, 100);
+  pushMatrix();  
+  translate(-size * cos(t), -size * sin(t));
+  translate(x, y);
+  rotate(norm(frameCount % loopFrames, 0, loopFrames) * TWO_PI);
+
+  beginShape();
+  for (int i = 0; i < n; i++) {
+    x = size * cos(float(i) * t);
+    y = size * sin(float(i) * t);
+    vertex(x, y);
+  }
+  endShape(CLOSE);
+  popMatrix();
+}
+
+void export() {
+  if(frameCount < loopFrames) {
+    gifExport.setDelay(100);
+    gifExport.addFrame();
+  } else {
+    gifExport.finish();
+    println("gif saved");
+    exit();
+  }
+}