Voronoi Germs

Playing with voronoi regions rendering at a per pixel level. When
scaling up I forgot to scale up the region rendering map, and the
regions stayed small. Kind of like how they clustered, looks like germs.

Also last commit of Grain Waterfall did not include the final source.

README.md

@@ -2,6 +2,9 @@
 
 #### Copyright James Lawrence Turner, 2015, All Rights Reserved
 
+## Voronoi Germs [Sun Feb 1, 2015]
+![Voronoi Germs](/voronoi_germs/output.png?raw=true)
+
 ## Grain Waterfalls [Fri Jan 30, 2015]
 ![Grain Waterfalls](/grain_waterfalls/output.png?raw=true)
 

grain_waterfalls/grain_waterfalls.pde

@@ -14,7 +14,7 @@ PShape logo;
 PGraphics logoMask;
 
 void setup() {
-  size(5000,5000,OPENGL);
+  size(5000,5000);
 
   logo  = loadShape("urx-logo.svg");
   logo.disableStyle();
@@ -39,8 +39,10 @@ void setup() {
 }
 
 void draw() {
-  for(int x = 0; x < width; x++) {
-   for(int y = 0; y < height; y++) {
+  PGraphics output = createGraphics(width,height);
+  output.loadPixels();
+  for(int y = 0; y < height; y++) {
+    for(int x = 0; x < width; x++) {
      color c;
      float distanceToClosestRegion = width;
      for(Region r : regions) {
@@ -49,9 +51,15 @@ void draw() {
         distanceToClosestRegion = distance;
        } 
      }
-     c = color(map(distanceToClosestRegion, 0, 100, 0, 255));
-     set(x, y, c);
+     c = color(map(distanceToClosestRegion, 0, 50, 150, 0));
+     if(logoMask.pixels[y * width + x] == color(255)) {
+       int variance = round(map(distanceToClosestRegion, 0, 50, 0, 150));
+       c = color(variance, 120 + variance, 200 + variance);
+     }
+     output.pixels[y * width + x] = c;
    } 
+   println(y);
   }
-  save("output.png");
+  output.updatePixels();
+  output.save("output.png");
 }

voronoi_germs/sketch.properties

@@ -0,0 +1,2 @@
+mode.id=processing.mode.java.JavaMode
+mode=Java

voronoi_germs/voronoi_germs.pde

@@ -0,0 +1,68 @@
+class Region {
+ float x, y;
+ Region(float x, float y) {
+  this.x = x;
+  this.y = y;
+ }
+ float distanceTo(float x, float y){
+   // Use cheaper manhattan distance calculation
+   return sqrt(sq(this.x - x) + sq(this.y - y));
+   //return abs(this.x - x) + abs(this.y - y);
+   //return sqrt(pow((this.x - x) + (this.y - y),2));
+ }
+}
+
+ArrayList<Region> regions;
+PShape logo;
+PGraphics logoMask;
+
+void setup() {
+  size(5000,5000);
+
+  logo  = loadShape("urx-logo.svg");
+  logo.disableStyle();
+  logo.scale(width / logo.width);
+
+  logoMask = createGraphics(width, height);
+  logoMask.beginDraw();
+  logoMask.background(0);
+  logoMask.translate(width / 8, height/4 + height / 16);
+  logoMask.scale(0.75);
+  logoMask.fill(255);
+  logoMask.shape(logo);
+  logoMask.endDraw();
+
+  smooth();
+  background(color(255));
+  regions = new ArrayList<Region>();
+  for(int i = 0; i < 500; i++) {
+   regions.add(new Region(random(width), random(height))); 
+  }
+  noLoop();
+}
+
+void draw() {
+  PGraphics output = createGraphics(width,height);
+  output.loadPixels();
+  for(int y = 0; y < height; y++) {
+    for(int x = 0; x < width; x++) {
+     color c;
+     float distanceToClosestRegion = width;
+     for(Region r : regions) {
+       float distance = r.distanceTo(x,y);
+       if(distance < distanceToClosestRegion) {
+        distanceToClosestRegion = distance;
+       } 
+     }
+     c = color(map(distanceToClosestRegion, 0, 120, 150, 0));
+     if(logoMask.pixels[y * width + x] == color(255)) {
+       int variance = round(map(distanceToClosestRegion, 0, 120, 150, -50));
+       c = color(variance, 120 + variance, 200 + variance);
+     }
+     output.pixels[y * width + x] = c;
+   } 
+   println(y);
+  }
+  output.updatePixels();
+  output.save("output.png");
+}