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Index › Programming Questions & Help › OpenGL and 3D Libraries › move camera around origin (OCD)
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move camera around origin (OCD) (Read 856 times)
NEONLIGHT
move camera around origin (OCD)
Jun 10th, 2008, 12:33am  
is it possible to move a OCD-camera around the center of a shape, e.g. a cube?
i have tried all of the methods like roll(), truck() and so on, but none seem to do this job.

i need the camera to move around the z-axis of an object and to still aim at the center of this object. rotateZ() doesn't work either.

any suggestions are highly appreciated,
thanks in advance.
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antiplastik
Re: move camera around origin (OCD)
Reply #1 - Jun 10th, 2008, 1:33pm  
use the camera eye and lookat properties:

http://processing.org/reference/camera_.html

Code:
camera(
  cos(angle)*d, 0, sin(angle)*d,
  0, 0, 0,
  0, 1, 0
);
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antiplastik
Re: move camera around origin (OCD)
Reply #2 - Jun 10th, 2008, 1:35pm  
full example:

Code:
float angle = 0.0;
float d = 40;

void setup() {
  size(400, 300, P3D);
}

void draw(){
  angle += PI/300;
  camera(
    cos(angle)*d, 10, sin(angle)*d,
    0, 0, 0,
    0, -1, 0
  );
  background(255);
  box(10);
}
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