Hello together...

May you know the RGB 3D Cube from the Examples.. I want to rotate the cube with the values from my color sensor.
in that way if my sensor is black -> the black edge of the RGB Cube is poping in the front...If the sensor is blue-> the blue edge of the cube is int the fornt.
I try to transform the 3D Color Vecor to a 2D Vektor to rotate the cube

Well I try with that kind of code... but Iam stucking


// X= Red Y=green Z = Blue
// RGB Value Scale 0-1024
// I try to transform the 3D Color Vecor to a 2D Vektor to rotate the cube
 v1 = new PVector(x,0,0);
v2 = new PVector(sin (30)*-y,sin (60)*y);
v3= new PVector(cos(60)*-z,sin(60)*-z);
v4 =new PVector(0,0,0);
cx= new PVector(0,0,0);
cy= new PVector(0,0,0);
v4.add(v1);
v4.add(v2);
v4.add(v3);
//Rotating Cube
 pushMatrix();
 
  translate(width/2+300, height/2, -30);
 
 

// Divide trough 1024 to scale down... 
  rotateX(((-v4.x)/2024)+1.2);
  rotateY(((-v4.y)/1024)+2.2);


 
  scale(80);
  beginShape(QUADS);

  fill(0, 1024, 1024); vertex(-1,  1,  1);
  fill(1024, 1024, 1024); vertex( 1,  1,  1);
  fill(1024, 0, 1024); vertex( 1, -1,  1);
  fill(0, 0, 1024); vertex(-1, -1,  1);

  fill(1024, 1024, 1024); vertex( 1,  1,  1);
  fill(1024, 1024, 0); vertex( 1,  1, -1);
  fill(1024, 0, 0); vertex( 1, -1, -1);
  fill(1024, 0, 1024); vertex( 1, -1,  1);

  fill(1024, 1024, 0); vertex( 1,  1, -1);
  fill(0, 1024, 0); vertex(-1,  1, -1);
  fill(0, 0, 0); vertex(-1, -1, -1);
  fill(1024, 0, 0); vertex( 1, -1, -1);

  fill(0, 1024, 0); vertex(-1,  1, -1);
  fill(0, 1024, 1024); vertex(-1,  1,  1);
  fill(0, 0, 1024); vertex(-1, -1,  1);
  fill(0, 0, 0); vertex(-1, -1, -1);

  fill(0, 1024, 0); vertex(-1,  1, -1);
  fill(1024, 1024, 0); vertex( 1,  1, -1);
  fill(1024, 1024, 1024); vertex( 1,  1,  1);
  fill(0, 1024, 1024); vertex(-1,  1,  1);

  fill(0, 0, 0); vertex(-1, -1, -1);
  fill(1024, 0, 0); vertex( 1, -1, -1);
  fill(1024, 0, 1024); vertex( 1, -1,  1);
  fill(0, 0, 1024); vertex(-1, -1,  1);

  endShape();
 
  popMatrix();

Hello Together

I have a color sensor that sends me its values over a PIC32 over RS 232 to processing.
Well, I have to transform the ADC measurements into the color space.

Well for that I need a matrix multiplication:

|Radc|    |3.037;   -1.25 ;  0.239|    |x|
|Gadc| x |0.42  ;   2.325; -1.244|  =|y|
|Badc|    |-0.689;  0.20  ;  7.45  |    |z|

Is there a good libray maybe from rotating cubes (ore some 3D libs) I can make a quicke step ?

What cool someone can help me with the matrix stuff

Thx in advance
Raph