Processing 1.0 - Processing Discourse - OpenGL and Capture. Solution?

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Index › Programming Questions & Help › OpenGL and 3D Libraries › OpenGL and Capture. Solution

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OpenGL and Capture. Solution? (Read 485 times)

kroko

OpenGL and Capture. Solution?
Dec 18^th, 2008, 10:50pm

This is working:

Code:


import processing.video.*;
Capture myCapture1;

void setup() {
  size(800, 600, P3D);
  fill(0, 153);
  noStroke();
  myCapture1 = new Capture(this, 320, 240, 24);
}

void draw() {
  background(255);
  myCapture1.read();
  image(myCapture1, 0, 0);
  translate(width/2, height/2);
  rect(-200, -200, 400, 400);
}

this isn't:

Code:


import processing.opengl.*;
import processing.video.*;
Capture myCapture1;

void setup() {
  size(800, 600, OPENGL);
  fill(0, 153);
  noStroke();
  myCapture1 = new Capture(this, 320, 240, 24);
}

void draw() {
  background(255);
  myCapture1.read();
  image(myCapture1, 0, 0);
  translate(width/2, height/2);
  rect(-200, -200, 400, 400);
}

Why? What would be the solution if I wanted to use OpenGL as render, when there are data in the sketch that are retrieved from webcamera?

Actually I don't even need to "show" video on the screen, just to do math from webcamera data, i.e.,

Code:


import processing.opengl.*;
import processing.video.*;
Capture myCapture1;

void setup() {
  size(800, 600, OPENGL);
  fill(0, 153);
  noStroke();
  myCapture1 = new Capture(this, 320, 240, 24);
}

void draw() {
  background(255);
  myCapture1.read();
  myCapture1.loadPixels();

  do some maths based on myCapture1.pixels[] values

  translate(width/2, height/2);

  rect(drawn based on myCapture1.pixels[] values);

}

Thanks in advance,
kroko

kroko

Re: OpenGL and Capture. Solution?
Reply #1 - Dec 18^th, 2008, 11:53pm

mkay, solved using JMyron

Code:


import processing.opengl.*; 
import JMyron.*;

JMyron bCapture;
PImage aCapture;

int h = 320;
int w = 240;
 
void setup() { 
  size(800, 600, OPENGL); 
  fill(0, 153); 
  noStroke(); 
  bCapture = new JMyron();
  bCapture.start(h, w);
  bCapture.findGlobs(0);
  aCapture = new PImage(h, w);
  frameRate(30);
} 
 
void draw() { 
  background(255); 
  bCapture.update();
  aCapture.loadPixels();
  bCapture.imageCopy(aCapture.pixels);
  aCapture.updatePixels();  
  image(aCapture, 0, 0); 
  translate(width/2, height/2); 
  rect(-200, -200, 400, 400); 
}

public void stop(){
  bCapture.stop();
  super.stop();
}

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