Initial Commit

Java/Processing/processing-3.3.6/modes/java/examples/Topics/Geometry/SpaceJunk/Cube.pde

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+
+class Cube {
+
+  // Properties
+  int w, h, d;
+  int shiftX, shiftY, shiftZ;
+
+  // Constructor
+  Cube(int w, int h, int d, int shiftX, int shiftY, int shiftZ){
+    this.w = w;
+    this.h = h;
+    this.d = d;
+    this.shiftX = shiftX;
+    this.shiftY = shiftY;
+    this.shiftZ = shiftZ;
+  }
+
+  // Main cube drawing method, which looks 
+  // more confusing than it really is. It's 
+  // just a bunch of rectangles drawn for 
+  // each cube face
+  void drawCube(){
+    beginShape(QUADS);
+    // Front face
+    vertex(-w/2 + shiftX, -h/2 + shiftY, -d/2 + shiftZ); 
+    vertex(w + shiftX, -h/2 + shiftY, -d/2 + shiftZ); 
+    vertex(w + shiftX, h + shiftY, -d/2 + shiftZ); 
+    vertex(-w/2 + shiftX, h + shiftY, -d/2 + shiftZ); 
+
+    // Back face
+    vertex(-w/2 + shiftX, -h/2 + shiftY, d + shiftZ); 
+    vertex(w + shiftX, -h/2 + shiftY, d + shiftZ); 
+    vertex(w + shiftX, h + shiftY, d + shiftZ); 
+    vertex(-w/2 + shiftX, h + shiftY, d + shiftZ);
+
+    // Left face
+    vertex(-w/2 + shiftX, -h/2 + shiftY, -d/2 + shiftZ); 
+    vertex(-w/2 + shiftX, -h/2 + shiftY, d + shiftZ); 
+    vertex(-w/2 + shiftX, h + shiftY, d + shiftZ); 
+    vertex(-w/2 + shiftX, h + shiftY, -d/2 + shiftZ); 
+
+    // Right face
+    vertex(w + shiftX, -h/2 + shiftY, -d/2 + shiftZ); 
+    vertex(w + shiftX, -h/2 + shiftY, d + shiftZ); 
+    vertex(w + shiftX, h + shiftY, d + shiftZ); 
+    vertex(w + shiftX, h + shiftY, -d/2 + shiftZ); 
+
+    // Top face
+    vertex(-w/2 + shiftX, -h/2 + shiftY, -d/2 + shiftZ); 
+    vertex(w + shiftX, -h/2 + shiftY, -d/2 + shiftZ); 
+    vertex(w + shiftX, -h/2 + shiftY, d + shiftZ); 
+    vertex(-w/2 + shiftX, -h/2 + shiftY, d + shiftZ); 
+
+    // Bottom face
+    vertex(-w/2 + shiftX, h + shiftY, -d/2 + shiftZ); 
+    vertex(w + shiftX, h + shiftY, -d/2 + shiftZ); 
+    vertex(w + shiftX, h + shiftY, d + shiftZ); 
+    vertex(-w/2 + shiftX, h + shiftY, d + shiftZ); 
+
+    endShape(); 
+
+    // Add some rotation to each box for pizazz.
+    rotateY(radians(1));
+    rotateX(radians(1));
+    rotateZ(radians(1));
+  }
+}

Java/Processing/processing-3.3.6/modes/java/examples/Topics/Geometry/SpaceJunk/SpaceJunk.pde

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+/**
+ * Space Junk  
+ * by Ira Greenberg (zoom suggestion by Danny Greenberg).
+ * 
+ * Rotating cubes in space using a custom Cube class. 
+ * Color controlled by light sources. Move the mouse left
+ * and right to zoom.
+ */
+
+// Used for oveall rotation
+float angle;
+
+// Cube count-lower/raise to test performance
+int limit = 500;
+
+// Array for all cubes
+Cube[] cubes = new Cube[limit];
+
+void setup() {
+  size(640, 360, P3D); 
+  background(0); 
+  noStroke();
+
+  // Instantiate cubes, passing in random vals for size and postion
+  for (int i = 0; i < cubes.length; i++){
+    cubes[i] = new Cube(int(random(-10, 10)), int(random(-10, 10)), 
+                        int(random(-10, 10)), int(random(-140, 140)), 
+                        int(random(-140, 140)), int(random(-140, 140)));
+  }
+}
+
+void draw(){
+  background(0); 
+  fill(200);
+
+  // Set up some different colored lights
+  pointLight(51, 102, 255, 65, 60, 100); 
+  pointLight(200, 40, 60, -65, -60, -150);
+
+  // Raise overall light in scene 
+  ambientLight(70, 70, 10); 
+
+  // Center geometry in display windwow.
+  // you can changlee 3rd argument ('0')
+  // to move block group closer(+) / further(-)
+  translate(width/2, height/2, -200 + mouseX * 0.65);
+
+  // Rotate around y and x axes
+  rotateY(radians(angle));
+  rotateX(radians(angle));
+
+  // Draw cubes
+  for (int i = 0; i < cubes.length; i++){
+    cubes[i].drawCube();
+  }
+  
+  // Used in rotate function calls above
+  angle += 0.2;
+}
+
+