Get the vertical axis of object's array

Processing Coding Questions
5

Thanks for precious feedback, i play a little, im trying to enlarge the cluster, and now it match with the value 3.5, i can’t understand why.
It is not proportional, maybe an int rounded…
Also rotate value, currently i find the right degree by hand, step by step with keyPressed, i wonder if the right prospective could be done in a clean way.

CubeClass[][][] cube = new CubeClass[8][8][8];

float d = 12;

float howMany = 0;
color c1 = color(255,255,0) ;
color c2 = color(0,255,255) ;
color c3 = color(255,0,255) ;


color[] colors  = {  
 c1, c2, c3
};

void setup(){

size(400, 400, P3D);

frameRate(60);

pixelDensity(displayDensity());

genesi();


noStroke();

}

void genesi(){

for (int x = 0; x < 8; x=x+1){

for (int y = 0; y < 8; y=y+1){

for (int z = 0; z < 8; z=z+1){

 

cube[x][y][z] = new CubeClass(x*24,y*24,z*24, parseBoolean(int(random(0,1.4))), int(random(0,3) ) ,int(random(0,3)) ,int(random(0,3)) );


}}}
  
}
void draw(){

background(100);

//howMany = howMany + 0.01;
float im = (-0.6163185) - howMany;
println(im);
ortho(-width/2, width/2, -height/2, height/2); // Same as ortho()
translate(width/2, height/2);
rotateY(im);
rotateX(-QUARTER_PI);
translate(-3.5*24, -3.5*24, -3.5*24);



for (int x = 0; x < 8; x=x+1){  

for (int y = 0; y < 8; y=y+1){

for (int z = 0; z < 8; z=z+1){

 

cube[x][y][z].update();
 

}}}

}



class CubeClass {

float ypos, xpos, zpos;

boolean oN;

int colOne;

int colTwo;

int colTre;

CubeClass (float x, float y, float z, boolean on, int col1, int col2, int col3) {  

ypos = y;

xpos = x;

zpos = z;

oN = on;

colOne = col1;

colTwo = col2;

colTre = col3;


}


void update() {  

if(oN){

pushMatrix();

translate(xpos,ypos,zpos);

beginShape(QUADS);

fill(colors[colOne]);

vertex(-d, -d, d);

vertex( d, -d, d);

vertex( d, d, d);

vertex(-d, d, d);

endShape();

// Back

beginShape(QUADS);

fill(colors[colTwo]);

vertex( d, -d, -d);

vertex(-d, -d, -d);

vertex(-d, d, -d);

vertex( d, d, -d);

endShape();

// Bottom

beginShape(QUADS);

fill(colors[colTre] );

vertex(-d, d, d);

vertex( d, d, d);

vertex( d, d, -d);

vertex(-d, d, -d);

endShape();

// Top

beginShape(QUADS);

fill(colors[colOne] );

vertex(-d, -d, -d);

vertex( d, -d, -d);

vertex( d, -d, d);

vertex(-d, -d, d);

endShape();

// Right

beginShape(QUADS);

fill(colors[colTwo]);

vertex( d, -d, d);

vertex( d, -d, -d);

vertex( d, d, -d);

vertex( d, d, d);

endShape();

// Left

beginShape(QUADS);

fill(colors[colTre]);

vertex(-d, -d, -d);

vertex(-d, -d, d);

vertex(-d, d, d);

vertex(-d, d, -d);

endShape();

popMatrix();

}

} }


void keyPressed(){
if (key == '+'){
howMany = howMany + 0.001;
}

if (key == '-'){
howMany = howMany - 0.001;
}

if (key == 'r'){
genesi();
}
}