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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 Melkert215August 07, 2014 04:27PM
Re: TEXMAP extension thoughts and findings. Attachments Roland Melkert85August 08, 2014 04:44PM
Re: TEXMAP extension thoughts and findings. Benjamin Moody63August 10, 2014 08:33PM
Re: TEXMAP extension thoughts and findings. Roland Melkert57August 11, 2014 11:50AM
Re: TEXMAP extension thoughts and findings. Benjamin Moody50August 10, 2014 10:19PM
Re: TEXMAP extension thoughts and findings. Roland Melkert73August 11, 2014 11:48AM
Re: TEXMAP extension thoughts and findings. Attachments Benjamin Moody58August 12, 2014 08:27PM
Re: TEXMAP extension thoughts and findings. Attachments Roland Melkert59August 13, 2014 03:51PM
Re: TEXMAP extension thoughts and findings. Attachments Roland Melkert61August 14, 2014 12:47PM
Re: TEXMAP extension thoughts and findings. Benjamin Moody43August 16, 2014 12:33PM
Re: TEXMAP extension thoughts and findings. Magnus Forsberg46August 14, 2014 01:33PM
Re: TEXMAP extension thoughts and findings. Roland Melkert52August 14, 2014 01:42PM
Re: TEXMAP extension thoughts and findings. Attachments Roland Melkert54August 16, 2014 10:58AM
Re: TEXMAP extension thoughts and findings. Benjamin Moody54August 16, 2014 04:38PM
Re: TEXMAP extension thoughts and findings. Benjamin Moody55August 17, 2014 09:58AM
Re: TEXMAP extension thoughts and findings. Steffen62August 20, 2014 03:56PM
Re: TEXMAP extension thoughts and findings. Benjamin Moody40August 21, 2014 09:28PM
Re: TEXMAP extension thoughts and findings. Roland Melkert53August 21, 2014 02:37PM
Re: TEXMAP extension thoughts and findings. Benjamin Moody58August 21, 2014 09:46PM



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