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Re: TEXMAP extension thoughts and findings.
avatarAugust 11, 2014 11:50AM
Quote
Benjamin Moody
Furthermore, the spec doesn't say in which direction the arctangents are computed (i.e., does the image appear in its natural orientation as viewed from the outside of the cylinder, or from the inside?)

I assumed, as the result of the LDraw orientation of up=-y, textures should use top/left orientation for uv at the level texmap is at.


Quote
Benjamin Moody
The spec is even less clear about spherical textures, as it doesn't say whether the third control point corresponds to the "left" or the "right" side of the texture. In my implementation I've been (somewhat arbitrarily) assuming that it goes on the right.

I too used right, thinking the p1,p2,p3 triangle is to be used CCW when calculating the sphere up vector.

Edited 1 time(s). Last edit at 2014-08-11 11:55AM by Roland Melkert.
SubjectAuthorViewsPosted
TEXMAP extension thoughts and findings. Attachments Roland Melkert239August 07, 2014 04:27PM
Re: TEXMAP extension thoughts and findings. Attachments Roland Melkert90August 08, 2014 04:44PM
Re: TEXMAP extension thoughts and findings. Benjamin Moody71August 10, 2014 08:33PM
Re: TEXMAP extension thoughts and findings. Roland Melkert64August 11, 2014 11:50AM
Re: TEXMAP extension thoughts and findings. Benjamin Moody57August 10, 2014 10:19PM
Re: TEXMAP extension thoughts and findings. Roland Melkert86August 11, 2014 11:48AM
Re: TEXMAP extension thoughts and findings. Attachments Benjamin Moody63August 12, 2014 08:27PM
Re: TEXMAP extension thoughts and findings. Attachments Roland Melkert67August 13, 2014 03:51PM
Re: TEXMAP extension thoughts and findings. Attachments Roland Melkert67August 14, 2014 12:47PM
Re: TEXMAP extension thoughts and findings. Benjamin Moody49August 16, 2014 12:33PM
Re: TEXMAP extension thoughts and findings. Magnus Forsberg53August 14, 2014 01:33PM
Re: TEXMAP extension thoughts and findings. Roland Melkert58August 14, 2014 01:42PM
Re: TEXMAP extension thoughts and findings. Attachments Roland Melkert62August 16, 2014 10:58AM
Re: TEXMAP extension thoughts and findings. Benjamin Moody61August 16, 2014 04:38PM
Re: TEXMAP extension thoughts and findings. Benjamin Moody61August 17, 2014 09:58AM
Re: TEXMAP extension thoughts and findings. Steffen67August 20, 2014 03:56PM
Re: TEXMAP extension thoughts and findings. Benjamin Moody46August 21, 2014 09:28PM
Re: TEXMAP extension thoughts and findings. Roland Melkert61August 21, 2014 02:37PM
Re: TEXMAP extension thoughts and findings. Benjamin Moody65August 21, 2014 09:46PM



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