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adding the old examples to the new opengl lib
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class Cube {
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// Properties
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int w, h, d;
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int shiftX, shiftY, shiftZ;
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// Constructor
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Cube(int w, int h, int d, int shiftX, int shiftY, int shiftZ){
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this.w = w;
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this.h = h;
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this.d = d;
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this.shiftX = shiftX;
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this.shiftY = shiftY;
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this.shiftZ = shiftZ;
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}
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// Main cube drawing method, which looks
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// more confusing than it really is. It's
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// just a bunch of rectangles drawn for
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// each cube face
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void drawCube(){
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beginShape(QUADS);
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// Front face
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vertex(-w/2 + shiftX, -h/2 + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, -h/2 + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, h + shiftY, -d/2 + shiftZ);
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vertex(-w/2 + shiftX, h + shiftY, -d/2 + shiftZ);
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// Back face
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vertex(-w/2 + shiftX, -h/2 + shiftY, d + shiftZ);
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vertex(w + shiftX, -h/2 + shiftY, d + shiftZ);
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vertex(w + shiftX, h + shiftY, d + shiftZ);
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vertex(-w/2 + shiftX, h + shiftY, d + shiftZ);
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// Left face
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vertex(-w/2 + shiftX, -h/2 + shiftY, -d/2 + shiftZ);
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vertex(-w/2 + shiftX, -h/2 + shiftY, d + shiftZ);
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vertex(-w/2 + shiftX, h + shiftY, d + shiftZ);
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vertex(-w/2 + shiftX, h + shiftY, -d/2 + shiftZ);
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// Right face
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vertex(w + shiftX, -h/2 + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, -h/2 + shiftY, d + shiftZ);
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vertex(w + shiftX, h + shiftY, d + shiftZ);
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vertex(w + shiftX, h + shiftY, -d/2 + shiftZ);
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// Top face
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vertex(-w/2 + shiftX, -h/2 + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, -h/2 + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, -h/2 + shiftY, d + shiftZ);
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vertex(-w/2 + shiftX, -h/2 + shiftY, d + shiftZ);
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// Bottom face
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vertex(-w/2 + shiftX, h + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, h + shiftY, -d/2 + shiftZ);
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vertex(w + shiftX, h + shiftY, d + shiftZ);
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vertex(-w/2 + shiftX, h + shiftY, d + shiftZ);
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endShape();
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// Add some rotation to each box for pizazz.
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rotateY(radians(1));
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rotateX(radians(1));
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rotateZ(radians(1));
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}
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}
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@@ -0,0 +1,65 @@
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/**
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* Space Junk
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* by Ira Greenberg.
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* Zoom suggestion
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* by Danny Greenberg.
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*
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* Rotating cubes in space using a custom Cube class.
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* Color controlled by light sources. Move the mouse left
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* and right to zoom.
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*/
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import processing.opengl.*;
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// Used for oveall rotation
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float ang;
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// Cube count-lower/raise to test P3D/OPENGL performance
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int limit = 500;
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// Array for all cubes
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Cube[]cubes = new Cube[limit];
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void setup() {
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size(1024, 768, OPENGL);
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background(0);
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noStroke();
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// Instantiate cubes, passing in random vals for size and postion
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for (int i = 0; i< cubes.length; i++){
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cubes[i] = new Cube(int(random(-10, 10)), int(random(-10, 10)),
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int(random(-10, 10)), int(random(-140, 140)), int(random(-140, 140)),
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int(random(-140, 140)));
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}
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}
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void draw(){
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background(0);
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fill(200);
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// Set up some different colored lights
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pointLight(51, 102, 255, 65, 60, 100);
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pointLight(200, 40, 60, -65, -60, -150);
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// Raise overall light in scene
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ambientLight(70, 70, 10);
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// Center geometry in display windwow.
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// you can change 3rd argument ('0')
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// to move block group closer(+)/further(-)
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translate(width/2, height/2, -200 + mouseX * 0.65);
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// Rotate around y and x axes
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rotateY(radians(ang));
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rotateX(radians(ang));
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// Draw cubes
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for (int i = 0; i < cubes.length; i++){
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cubes[i].drawCube();
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}
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// Used in rotate function calls above
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ang++;
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}
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