float spin = 0.0;
int sizeX = 5;
int sizeY = 5;
int sizeZ = 5;
int wuerfel[][][] = new int[sizeX][sizeY][sizeZ]; //stores the size for each box
int gridDistance = 40;


void setup() 
{
  size(400, 400, P3D);
  mouseY=100;
  setupBoxes();
}

void draw() 
{
  background(0);
  lights();
  spin += 0.02;
  
  camera(width/2.0, height/2.0, 300.0, width/2.0, height/2.0, 0.0, 0.0, 1.0, 0.0);
  
  translate(width/2 , height/2 , 0);
  rotateX(PI/9 +spin/9.0);
  rotateY(PI/5 + spin);
  
  
  for (int i = 0; i < sizeX; i++)
  {
    for (int k = 0; k < sizeY; k++)
    {
      for (int l = 0; l < sizeZ; l++)
      {
        fill(200/sizeX *i +55, 
             200/sizeY *k +55, 
             200/sizeZ *l +55); //create a RGB-value according to the boxes position
             
        pushMatrix();
        translate(-(sizeX-1)*gridDistance/2.0, -(sizeY-1)*gridDistance/2.0, -(sizeZ-1)*gridDistance/2.0);
        translate(gridDistance *i, gridDistance *k, gridDistance*l );
        float center = wuerfel[i][k][l] /2.0;
        box(wuerfel[i][k][l]);

        popMatrix();
      }
    }
  }
  
  if (mousePressed) setupBoxes();
}

void setupBoxes()
{
  float upperTreshold = gridDistance -5;
  for (int i = 0; i < sizeX; i++)
  {
    for (int k = 0; k < sizeY; k++)
    {
      for (int l = 0; l < sizeZ; l++)
      {
        wuerfel[i][k][l] = round( random(5, upperTreshold/ height *mouseY +5) ); //creates new random sizes
      }
    }
  }
}