How to face the camera

Programming Questions

mrsprock

in Programming Questions • 3 years ago

Hi there,

I've tried alot of things to make my 2d-Particles always face the camera from the front to create a billboarding effect.
But nothing seemed to work. Can anyone show me some code to get this working? Would be highly appreciated!

Replies(4)

amnon.owed

Re: How to face the camera

3 years ago

I don't have a readymade solution, but the code presented here may be helpful for ideas.

Also when using PeasyCam, this function...

float[] rotations = camera.getRotations();

...might be helpful.

Once you have a working code snippet share it here for future generations

mrsprock

Re: How to face the camera

3 years ago

thx, I already found out now that I just need to invert the rotation of the camera.. ;)

nardove

Re: How to face the camera

3 years ago

For a more in depth method check out http://www.lighthouse3d.com/opengl/billboarding/

Cheers

rapatski

Re: How to face the camera

3 years ago

In the documentation of peasyCam's getRotation() this issue is addressed specifically?

float[] rotations = cam.getRotations();
rotateX(rotations[0]);
rotateY(rotations[1]);
rotateZ(rotations[2]);
text("Here I am!", 0, 0, 0);

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