Julia set: Difference between revisions

Content added Content deleted

Inline

@@ Line 497: / Line 497: @@
     }
     ( $r, $g, $b ) = map { (($_+$m) * 255).Int }, $r, $g, $b;
+}</lang>
+=={{header|Processing}}==
+<lang java>void setup() {
+  size(640, 480);
+}
+float cX = -0.7;
+float cY = 0.27015;
+float zx, zy;
+float maxIter = 300;
+void draw() {
+  for (int x = 0; x < width; x++) {
+    for (int y = 0; y < height; y++) {
+      zx = 1.5 * (x - width / 2) / (0.5 * width);
+      zy = (y - height / 2) / (0.5 * height);
+      float i = maxIter;
+      while (zx * zx + zy * zy < 4 && i > 0) {
+        float tmp = zx * zx - zy * zy + cX;
+        zy = 2.0 * zx * zy + cY;
+        zx = tmp;
+        i -= 1;
+      }
+      color c = hsv2rgb(i / maxIter * 360, 1, i > 1 ? 1 : 0);
+      set(x, y, c);
+    }
+  }
+  noLoop();
+}
+color hsv2rgb(float h, float s, float v) {
+  float c = v * s;
+  float x = c * (1 - abs(((h/60) % 2) - 1));
+  float m = v - c;
+  float r, g, b;
+  if (h < 60) {
+    r = c;
+    g = x;
+    b = 0;
+  } else if (h < 120) {
+    r = x;
+    g = c;
+    b = 0;
+  } else if (h < 180) {
+    r = 0;
+    g = c;
+    b = x;
+  } else if (h < 240) {
+    r = 0;
+    g = x;
+    b = c;
+  } else if (h < 300) {
+    r = x;
+    g = 0;
+    b = c;
+  } else {
+    r = c;
+    g = 0;
+    b = x;
+  }
+  int ri = round((r + m) * 255);
+  int gi = round((g + m) * 255);
+  int bi = round((b + m) * 255);
+  return color(ri, gi, bi);
 }</lang>