Computer Aided Design : 14709


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Subject:	Re: LDraw File Format Spec 1.0 DRAFT - Call for Public Comments
Newsgroups:	lugnet.cad
Date:	Tue, 21 Aug 2007 20:30:20 GMT
Viewed:	3800 times

> > I think it would be helpful to mention the used matrix in line type 1 is > row orientated (more clearly then 'standard matrix'). > Just my thoughts, > > Roland Is this really what the LDRAW spec is stating? Because that would be contrary to the OpenGL spec, in which the standard ordering of matrices is column-major. So if you have a row like a b c d e f g h That would be interpreted in OpenGL as a e b f c g d h and NOT a b c d e f g h Rob

Message has 2 Replies:

		Re: LDraw File Format Spec 1.0 DRAFT - Call for Public Comments
(...) Umm, so what? LDraw is not, and should not, be dependent on OpenGL. Having worked with transformation matrix in both formats, I find the row-major format much easier to hand-edit than column-major organization. At least for LDraw-type usage (...) (17 years ago, 21-Aug-07, to lugnet.cad)

		Re: LDraw File Format Spec 1.0 DRAFT - Call for Public Comments
(...) Hi Rob, Not to be indelicate, but LDraw was around before OpenGL. That said, I think the document must explicitly show something like this: a b c d e f g h i Furthermore I think the document must explain x, y and z. If I remember correctly (...) (17 years ago, 28-Aug-07, to lugnet.cad)

Message is in Reply To:

		Re: LDraw File Format Spec 1.0 DRAFT - Call for Public Comments
(...) After reading the text (Great work on part of the LSC), these are my comments. I think it would be helpful to mention the used matrix in line type 1 is row orientated (more clearly then 'standard matrix'). A paragraph about line type 1 (...) (17 years ago, 21-Aug-07, to lugnet.cad)

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