Nyad

11-23-2007, 04:20 PM

I want to calculate if a 3d point is in the view frustum or not.

I have my Frustum width and height calculated.

My point has its values - px,py,pz

If I want to find the frustum width at that point's z value

would I do this:

pz * fw and pz * fh

But must I first transform this point by the camera matrix, modelview matrix, and projection matrix?

I have my Frustum width and height calculated.

My point has its values - px,py,pz

If I want to find the frustum width at that point's z value

would I do this:

pz * fw and pz * fh

But must I first transform this point by the camera matrix, modelview matrix, and projection matrix?