hi,
this isn't really pertinent to animation, but I was wondering if there
is a  way to scale an image map to an object. For instance, if you have
a logo you  wanted to put on a modeled piece of paper. Can any1 help?
thanx,
chip

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> this isn't really pertinent to animation, but I was wondering if there
> is a  way to scale an image map to an object. For instance, if you have
> a logo you  wanted to put on a modeled piece of paper. Can any1 help?

that should go in povray.advanced-users...  the trick is
image_map {
	<your_image_map_stuff>
	scale <x,y,z>
}

bingo!

the image will fit to the 1/1 ratio, if your image is 600/200 it will be scaled
to 1/1... so you should try:
scale <1, 1/3,1>
since the x=1=600 and y=1=600 too... if you know what I mean...

Hope this helps...
	Simon

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"Simon Lemieux" <lem### [at] yahoocom> wrote in message
news:39519E01.A91C2599@yahoo.com...
| > this isn't really pertinent to animation, but I was wondering if there
| > is a  way to scale an image map to an object. For instance, if you have
| > a logo you  wanted to put on a modeled piece of paper. Can any1 help?

I'd have to say this is more a general question, or a new user question unless
it has to do with UV mapping to the triangles of a crumpled paper.  If just to
image map a thin box then it's not an advanced kind of question.
Ken Tyler has given a suitable answer at povray.general and there was most
likely no need to ask at these other groups anyway.

| that should go in povray.advanced-users...  the trick is
| image_map {
| <your_image_map_stuff>
| scale <x,y,z>
| }
|
| bingo!

Or boing!  Sorry, I just had to say that :-)
The whole thing hinges upon a corner vector located at <0,0,0> if using the
default planar map type.  Best thing a person can do is read (in Scene Help,
Povray.doc, etc.) about image_map types to understand there use.
It's common practice to translate then scale planar image maps (and bump_map,
etc.) rather than scale then translate.  But that can be up to personal
preference. I.e., box {0,1 pigment {image_map {tga "image.tga" map_type 0} }
scale <160,120,1>} versus doing it like box {<-160,-120,0>,<160,120,1> pigment
{image_map {tga "image.tga" map_type 0} translate -0.5 scale <160,120,1>} } in
order to have everything centered on <0,0,0> instead of the lower-left corner
being the point to reference.
Anyway, you can see how people explaining it might be more cumbersome than
doing a little reading.  However I'm not saying don't ask questions, far from
it.

Bob

| the image will fit to the 1/1 ratio, if your image is 600/200 it will be
scaled
| to 1/1... so you should try:
| scale <1, 1/3,1>
| since the x=1=600 and y=1=600 too... if you know what I mean...
|
| Hope this helps...
| Simon

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Please do not post the same article to several newsgroups. See
povray.announce.frequently-asked-questions

-- 
main(i,_){for(_?--i,main(i+2,"FhhQHFIJD|FQTITFN]zRFHhhTBFHhhTBFysdB"[i]
):5;i&&_>1;printf("%s",_-70?_&1?"[]":" ":(_=0,"\n")),_/=2);} /*- Warp -*/

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