Gareth,
You need to provide normal vectors too. Otherwise OpenGL & the
raytracer won't be able to light them correctly.
Cheers,
Warren
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of
> Gareth Stockwell
> Sent: Thursday, March 25, 2004 10:04 AM
> To: pymol-users
> Subject: [PyMOL] CGO shading
>
>
> Hi there,
>
> Does anyone know how to get CGO objects to be properly shaded?
>
> For example, if I create two triangles which lie in
> perpendicular planes...
>
> obj = [
>
> BEGIN, TRIANGLES,
>
> COLOR, 1, 0, 0,
> VERTEX, 0, 0, 0,
> VERTEX, 1, 0, 0,
> VERTEX, 1, 1, 0,
>
> COLOR, 1, 0, 0,
> VERTEX, 0, 0, 0,
> VERTEX, 1, 0, 0,
> VERTEX, 1, 0, 1,
>
> END
> ]
>
> cmd.load_cgo(obj,'triangles')
>
>
> ... the colour of both triangles looks identical, in either
> OpenGL or ray-traced rendering.
>
> I want to use CGOs to create 'floor' and 'walls' as a
> backdrop to ray-traced images, to give better perspective.
> At the moment, I have to manually set the shade of each wall
> in order to get it to look right.
>
> Details of my setup:
> PyMOL version 0.95 beta, running on Linux
> GL_VENDOR: 2d3D, Inc
> GL_RENDERER: Mesa DRI Intel(R) 845G 20021115
> GL_VERSION: 1.2 Mesa 4.0.4
>
> Cheers,
> Gareth
>
>
> --
> --------------------------------------------------------------
> -----------------
> Gareth Stockwell
> EMBL - European Bioinformatics Institute Wellcome Trust
> Genome Campus Hinxton
> Cambridge CB10 1SD
> [email protected]
> Tel 01223 492548
> http://www.ebi.ac.uk/~gareth
>
>
>
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