add a kind of clound and noise random walker

cloud/cloud.pde

@@ -0,0 +1,25 @@
+void setup() {
+  size(640, 240);
+  background(255);
+}
+
+void draw(){
+  loadPixels();
+  float xoff = 0.0;
+  for (int x = 0; x < width; x++) {
+    float yoff = 0.0;
+    for (int y = 0; y < height; y++) {
+      noiseDetail(2,0.65);
+      float brightr = map(noise(xoff,yoff), 0, 1, 80, 200);
+      noiseDetail(12,0.65);
+      float brightg = map(noise(xoff,yoff), 0, 1, 80, 200);
+      noiseDetail(8,0.65);
+      float brightb = map(noise(xoff,yoff), 0, 1, 80, 200);
+      //float bright = random(255);
+      pixels[x+y*width] = color(brightr, brightg, brightb);
+      yoff += 0.01;
+    }
+    xoff += 0.01;
+  }
+  updatePixels();
+}