// Source: http://www.somerandomdude.net/processing/helix/helix.pde
/*
Sketch:		Helix

Author: 	P.J. Onori
URL: 		http://www.somerandomdude.net

Date: 		2007.11.13
Details: 	3d visualization based on the rotation of grid elements and colored based on color 
		 	values derived from captured webcam data. 

Note: 		WEBCAM NEEDED FOR THIS APP TO RUN. IF YOU DO NOT HAVE A WEBCAM,
	  		REMOVE ALL REFERENCES FROM FILE.
*/

import processing.video.*;
import processing.opengl.*;

Capture video;

float rot1=0;
float rot2=0;
float r=0;
float g=0;
float b=0;

void setup() {
  size(640, 480, OPENGL);
  hint(ENABLE_OPENGL_4X_SMOOTH);
  video = new Capture(this, width, height, 30);

  noStroke();
}

void draw() {
  if (video.available()) {
    background(255);
    video.read();
    video.loadPixels();
    
    int rows=48;
    int columns=64;
    
    rot1 += 0.005;
    translate(width/2,height/2);
    for (int y = 0; y < height; y+=height/rows) {
      for (int x = 0; x < width; x+=width/columns) {      
        rot2 -= 0.000005;
        
        int pixelValue = video.pixels[x*y]; 
        /*
        r = red(pixelValue);
        g = green(pixelValue);
        b = blue(pixelValue);
        */
        rotateX(rot1/400);
        rotateY(rot2/200);
        
        fill(pixelValue); 
        
        ellipse(x-width/2, y-height/2, width/columns, height/rows);
        
      }
      translate(width/20,height/40);
      rotateX(rot1/200);
      rotateZ(rot1/400);
    }
    rotateY(-rot1/100);
  }
  println(frameCount + "/" + frameRate);
  
}