November 12, 2014 19:07 · Nov 12, 2014
diff --git a/gistfile1.pde b/gistfile1.pde
@@ -0,0 +1,126 @@
+// lol forgive me for this code
+
+int[][] result;
+float t;
+
+float ease(float p) {
+  return 3*p*p - 2*p*p*p;
+}
+
+float ease(float p, float g) {
+  if (p < 0.5) 
+    return 0.5 * pow(2*p, g);
+  else
+    return 1 - 0.5 * pow(2*(1 - p), g);
+}
+
+float mn = .5*sqrt(3);
+
+void setup() {
+  setup_();
+  result = new int[width*height][3];
+}
+
+void draw() {
+
+  if (!recording) {
+    t = mouseX*1.0/width;
+    draw_();
+  } else {
+    for (int i=0; i<width*height; i++)
+      for (int a=0; a<3; a++)
+        result[i][a] = 0;
+
+    for (int sa=0; sa<samplesPerFrame; sa++) {
+      t = map(frameCount-1 + sa*shutterAngle/samplesPerFrame, 0, numFrames, 0, 1);
+      draw_();
+      loadPixels();
+      for (int i=0; i<pixels.length; i++) {
+        result[i][0] += pixels[i] >> 16 & 0xff;
+        result[i][1] += pixels[i] >> 8 & 0xff;
+        result[i][2] += pixels[i] & 0xff;
+      }
+    }
+
+    loadPixels();
+    for (int i=0; i<pixels.length; i++)
+      pixels[i] = 0xff << 24 | 
+        int(result[i][0]*1.0/samplesPerFrame) << 16 | 
+        int(result[i][1]*1.0/samplesPerFrame) << 8 | 
+        int(result[i][2]*1.0/samplesPerFrame);
+    updatePixels();
+
+    saveFrame("f###.gif");
+    if (frameCount==numFrames)
+      exit();
+  }
+}
+
+//////////////////////////////////////////////////////////////////////////////
+
+int samplesPerFrame = 4;
+int numFrames = 180;        
+float shutterAngle = .6;
+
+boolean recording = true;
+
+void setup_() {
+  size(500, 500, P2D);
+  rectMode(CENTER);
+  stroke(32);
+  strokeWeight(1.4);
+  smooth(8);
+  noFill();
+}
+
+float x, y, tt, ttt;
+float l, w;
+int N = 12;
+float d = 40, th;
+
+void arc_(){
+  beginShape();
+  for(int i=0; i<=N; i++){
+    th = i*HALF_PI/N;
+    x = -l/2 + l/2*cos(th);
+    y = -w/2 + w/2*sin(th);
+   vertex(x,y);
+  }
+  endShape();
+} 
+
+void draw_() {
+  background(250); 
+  pushMatrix();
+
+  translate(width/2, height/2);
+  for (int i=-N; i<=N; i++) {
+    for (int j=-N; j<=N; j++) {
+      tt = (t + 100 - 0.04*(abs(i)+abs(j)));
+      tt %= 1;
+      ttt = (2*tt) % 1;
+      ttt = min(1,1.4*ttt);
+      l = d*ease(pow(ttt,.75),2.5);
+      w = d*ease(pow(1-ttt,.75),2.5);
+      pushMatrix();
+      translate(d*i, d*j);
+      if(tt>=.5)
+        rotate(HALF_PI);
+      arc_();
+      pushMatrix();
+      scale(1,-1);
+      arc_();
+      popMatrix();
+      pushMatrix();
+      scale(-1,1);
+      arc_();
+      popMatrix();
+      pushMatrix();
+      scale(-1,-1);
+      arc_();
+      popMatrix();
+      popMatrix();
+    }
+  }
+  popMatrix();
+}