Hello,

I'm having a problem with this sketch. I'm using the draw function to put some matrices on display, but they are only drawn 3 times (one for each matrix) and then the conditional stops.

I would like to rotate freely around the displayed objects, but I can't. I've tried putting various rotateX/rotateY on draw(), and I've also played with putting a camera(), but not one responds in real-time, they only function on the 3 first iterations of the draw method.

Please, any advice on rotating the object (or camera) to see the dislay at various angles at runtime is appreciated!!!

Code:

import processing.opengl.*;
import de.cappelnord.ppm.*;

int dim;
int size = 24;

float drehI = 0.0;

PPMatrix m1;
PPMatrix m2;
PPMatrix m3; 

PPMatrix[] history;

PPMatrixList list;
Iterator it;

boolean[][] mat1;
boolean[][] mat2;
boolean[][] mat3;

final static int NUM = 6;

float rotx = PI/4;
float roty = PI/4;

void mouseDragged() {
  float rate = 0.01;
  rotx += (pmouseY-mouseY) * rate;
  roty += (mouseX-pmouseX) * rate;
}

void setup()
{
  dim = PublicPixelMatrix.DIM;
  size(1024, 576, OPENGL);
  frameRate(25);
  smooth();

  mat1 = new boolean[dim][dim];
  mat2 = new boolean[dim][dim];
  mat3 = new boolean[dim][dim];

  for(int i=0; i<dim; i++) {
    for(int j=0; j<dim; j++) {
	  boolean bool =  ((int)random(2)) == 1 ? true : false;
	  mat1[j][i] = bool;
    }
  }


  arrayCopy(mat1, mat2);
  arrayCopy(mat2, mat3);

  m1 = new PPMatrix(1249422542, mat1);
  m2 = new PPMatrix(1249422543, mat2);
  m3 = new PPMatrix(1249422544, mat3);

  list = new PPMatrixList();
  list.add(m1);
  list.add(m2);
  list.add(m3);
  //list = PublicPixelMatrix.readPPMatrixListFromURL("XXX");  

  it = list.iterator();

  history = new PPMatrix[NUM];
}

void draw()
{  
  if(it.hasNext())
  {
    background(0);
    noStroke();
    
    PPMatrix matrix = (PPMatrix) it.next();

    for(int i = history.length - 2; i >= 0; i--)
    {
	history[i+1] = history[i]; 
    }
    history[0] = matrix;

    pushMatrix();
    translate(width/2, height / 2 - ((dim * size) / 2));

    drehI  = drehI + 0.011;
    
    rotateY( PI + (sin(drehI) * (PI/4)));
    translate(-((dim * size) / 2),0);
    
    for(int i = 0; i < history.length; i++)
    {
	if(history[i] != null)
	{
	  pushMatrix();
	  translate(0,0,i*-80 );

	  float alpha = 255 - (((float) i / (float) history.length) * 220);
	   
	  for(int y = 0; y < dim; y++)
	  {
	    for(int x = 0; x < dim; x++)
	    {   
		fill(0,history[i].get(x,y) ? 0 : 255,0, alpha);
		rect(x * size, y * size, size , size);
	    }
	  }  
	  popMatrix();
	}   
    }
    popMatrix();   
    fill(255);
  }
 ///camera(rotx, 0., 0., 50.0, 50.0, 0.0, rotx, 1.0, 1.0);
}    
 

Thank you very, very much JR for your help.

My problem is solved, and for future inquiries, I promise to be more empathic with any potential helpers.

Greetings,


-RT