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I have an image 126 x 689 pixels. It is the left figure in the following
images.
Help me figure out how to make this thing work.
None of the following configurations for my box give an image with the
original proportions! Why won't pov do this? Is this a bug?
box{<0,0,0>,<1,1,0.001>
//box{<0,0,0>,<1,689/126,1,0.001>
//box{<0,0,0>,<126/689,1,0.001>
pigment{
image_map{
tga "c:\My Documents\left2.tga"
once
map_type 0
}
}
finish {ambient 1 diffuse 0}
translate <-0.5,-0.5,-0.05>
scale 14
translate -17*x -1.5*y +3*z
}
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Attachments:
Download 'thebody11rebuild3.jpg' (12 KB)
Download 'thebody11rebuild2.jpg' (16 KB)
Preview of image 'thebody11rebuild3.jpg'
Preview of image 'thebody11rebuild2.jpg'
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Here's how I would do it.
box
{
-<1,1,0>/2,<1,1,0>/2
pigment
{
image_map
{
tga "c:\My Documents\left2"
once map_type 0 interpolate 2
}
translate -<1,1,0>/2
}
finish {ambient 1 diffuse 0}
scale 14 translate <-17,-1.5,3>
}
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You don't compensate for aspect ratio:
> box{<0,0,0>,<1,1,0.001>
> pigment{
> image_map{
> tga "c:\My Documents\left2.tga"
> once
> map_type 0
> }
> }
> finish {ambient 1 diffuse 0}
> translate <-0.5,-0.5,-0.05>
scale 14 *vnormalize(<126,689,1>)
> translate -17*x -1.5*y +3*z
> }
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Sigmund Kyrre Aas wrote:
> You don't compensate for aspect ratio:
>
> > box{<0,0,0>,<1,1,0.001>
As I said, none of the following first lines give a sensible solution:
box{<0,0,0>,<1, 1, 0.001>
box{<0,0,0>,<1, 689/126, 0.001>
box{<0,0,0>,<126/689, 1, 0.001>
Post a reply to this message
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'image_map' is a texture though, so it doesn't matter what the 'box' starts off
as. You'll always have to scale the texture either within the image map or
pigment or texture part.
Bob
"Greg M. Johnson" <gre### [at] my-dejanews com> wrote in message
news:38DFAEF8.73E930BE@my-dejanews.com...
| Sigmund Kyrre Aas wrote:
|
| > You don't compensate for aspect ratio:
| >
| > > box{<0,0,0>,<1,1,0.001>
|
| As I said, none of the following first lines give a sensible solution:
|
| box{<0,0,0>,<1, 1, 0.001>
| box{<0,0,0>,<1, 689/126, 0.001>
| box{<0,0,0>,<126/689, 1, 0.001>
|
Post a reply to this message
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> box{<0,0,0>,<1,1,0.001>
> pigment{
> image_map{
> tga "c:\My Documents\left2.tga"
> once
> map_type 0
> }
> }
> finish {ambient 1 diffuse 0}
> translate <-0.5,-0.5,-0.05>
scale <126/689,1,1> /// ***** Added this line
>
> scale 14
> translate -17*x -1.5*y +3*z
> }
>
> ------------------------------------------------------------------------
> [Image] [Image]
--
Josh English
eng### [at] spiritonecom
"May your hopes, dreams, and plans not be destroyed by a few zeros."
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"Greg M. Johnson" wrote:
>
> Sigmund Kyrre Aas wrote:
>
> > You don't compensate for aspect ratio:
> >
> > > box{<0,0,0>,<1,1,0.001>
>
> As I said, none of the following first lines give a sensible solution:
>
> box{<0,0,0>,<1, 1, 0.001>
> box{<0,0,0>,<1, 689/126, 0.001>
> box{<0,0,0>,<126/689, 1, 0.001>
Eh. Did you try the changes I made? It should work. According to the manual all
images are mapped from <0,0,0> to <1,1,0>, regardless of the shape mapped onto.
Scaling must come after that, scaling both the object and the image map.
Post a reply to this message
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Not sure I fully understand the problem, and someone has probably already told
you this, but:
image_maps are automatically one square unit at the origin. If you need the
map to be a different ratio, are scaling the box later, etc, you must
accordingly put a scale in the pigment block.
--
___ _______________________________________________
| \ |_ <dav### [at] faricynet> <ICQ 55354965>
|_/avid |ontaine http://www.faricy.net/~davidf/
"The only difference between me and a madman is that I'm not mad." -Dali
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Greg M. Johnson wrote:
>
> Sigmund Kyrre Aas wrote:
>
> > You don't compensate for aspect ratio:
> >
> > > box{<0,0,0>,<1,1,0.001>
>
> As I said, none of the following first lines give a sensible solution:
>
> box{<0,0,0>,<1, 1, 0.001>
> box{<0,0,0>,<1, 689/126, 0.001>
> box{<0,0,0>,<126/689, 1, 0.001>
The important change he made is this:
scale 14 *vnormalize(<126,689,1>) instead of scale 14
(it's lost in the middle of the original message, which is
why you probably overlooked it...)
Jerome
--
* Doctor Jekyll had something * mailto:ber### [at] inamecom
* to Hyde... * http://www.enst.fr/~jberger
*******************************
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