On Wed, 2007-05-09 at 10:11 -0400, nosehair911@bellsouth.net wrote:
Roman, Thanks for your help. Chris just clued me in on gemlist_info, check out the help file it looks like what we both have been looking for. Plus you can do as many transformations as you like and then put gemlist_info at the end of the chain to give you the absolute position, shear, size and orientation. But thanks for the abstactions you wrote, they will come in handy.
i am not sure, if they make any sense at all, since there is [gemlist_info]. they might be usefull for an non-gem context, though...
roman
Alain
From: Roman Haefeli reduzierer@yahoo.de Date: 2007/05/09 Wed AM 10:00:54 EDT To: nosehair911@bellsouth.net CC: pd-list@iem.at Subject: Re: [PD] Geo absolute position
hi alain
because of the same problem, i wrote a small collection of vector processing abstractions. instead of using several [translateXYZ] and [rotateXYZ] objects in one chain, i decided to only use one [translateXYZ] for the position of the geo and one [rotatateXYZ] for its orientation. for calculating the the positions and orientations, i used the abstractions, i mentioned above. it seems awkard to have to compute all that stuff yourself, since there are object, that should make life easier, but i din't find any better way to overcome that problem yet.
you can find the abstractions here: http://www.romanhaefeli.net/software/pd/vector_abs.tar.gz
On Wed, 2007-05-09 at 09:25 -0400, nosehair911@bellsouth.net wrote:
I have been looking for this answer for a while now. In Gem, is there a way to get the absolute position of a geo after its been rotated, moved, rotated again, etc...? For example:
[gemhead] | [translateXYZ 0 1 0] | [rotateXYZ 0 0 90] | [translateXYZ 1 0 0] | [circle 0.1] | [absolute position]
i think, it would also be cool to not only know the position, but also its orientation. further would it be usefull to have some angel-to-vector conversion, so that an orientation given in angles would be outputted as the three vectors rotated by these angles.
roman
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