| RE: [AD] Patch for the documentation of polygon_z_normal() |
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- To: <alleg-developers@xxxxxxxxxx>
- Subject: RE: [AD] Patch for the documentation of polygon_z_normal()
- From: "Robert Ohannessian" <ROhannessian@xxxxxxxxxx>
- Date: Tue, 7 Jun 2005 08:32:11 -0700
- Thread-index: AcVraBzxXyjynNGAQIild9rAFbcMSAAC/YcAAAB7LpA=
- Thread-topic: [AD] Patch for the documentation of polygon_z_normal()
> That's probably too difficult for a beginners guide. You can't just do
> camera->poly dot normal > 0 and have that work, you need to compare
> against a range of values (which can be negative), based on the
> projection transform, and clip against that.
Now that I think about it, this can't work either. You need to have your
geometry in screen-space.