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Index › Programming Questions & Help › Syntax Questions › multiple cameras
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multiple cameras (Read 386 times)
mattaspen
multiple cameras
Jun 23rd, 2008, 11:17pm  
Hello Everyone,

I wanted to get some guidance on getting a Processing application (I'm working in Eclipse using OpenGl) that has 2 cameras; 1. shows the entire scene 2. is 'looking' at a subset of this scene.

I'm thinking that I probably need a JFrame w/ 2 windows, one for each of the 2 cameras, but am not sure how to implement this yet.

Thanks!
--MA
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JohnG
Re: multiple cameras
Reply #1 - Jun 23rd, 2008, 11:33pm  
You can do this with a little bit of messing around in pure GL mode with:

Code:
import javax.media.opengl.*;

//....
  GL gl=((PGraphicsOpenGL)g).beginGL();
  gl.glViewport(0,0,width/2,height);
  ((PGraphicsOpenGL)g).endGL();
  perspective(PI/3.0,(width/2.0)/height,0.001,1000);
  //this will only draw in the left half of the screen...
  //draw stuff...
  GL gl=((PGraphicsOpenGL)g).beginGL();
  gl.glViewport(width/2,0,width/2,height);
  ((PGraphicsOpenGL)g).endGL();
  //this will only draw in the right half.
  //draw stuff again.

//...
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