Is there a way to do "reflection_map" in POV ?

It's a feature seen in Lightwave 5.6 : You stick a B&W image to an
object, only the white areas will be reflective, while the dark parts
will not reflect anything. Just like a bump_map, but with reflection.

Is there someway to work around this ?

Thanks

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<ffj### [at] club-internetfr> wrote:

>Is there a way to do "reflection_map" in POV ?

Yes, using a texture map of identical textures with the only
difference being the reflection amount.


Peter Popov ICQ : 15002700
Personal e-mail : pet### [at] usanet
TAG      e-mail : pet### [at] tagpovrayorg

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<ffj### [at] club-internetfr> wrote:

> Is there a way to do "reflection_map" in POV ?
> 
> It's a feature seen in Lightwave 5.6 : You stick a B&W image to an
> object, only the white areas will be reflective, while the dark parts
> will not reflect anything. Just like a bump_map, but with reflection.
> 
> Is there someway to work around this ?

This has come up before, I think it was decided that a "finish_map" 
feature would be more useful, but nobody has implemented it yet. In the 
mean time, use material_map(or, if you have MegaPOV, you can use 
texture_map with an image pattern).

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Personal Web page: http://chrishuff.dhs.org/
TAG Web page: http://tag.povray.org/

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Chris Huff wrote:


> <ffj### [at] club-internetfr> wrote:
>
> > Is there a way to do "reflection_map" in POV ?
>
> This has come up before, I think it was decided that a "finish_map"
> feature would be more useful, but nobody has implemented it yet. In the
> mean time, use material_map(or, if you have MegaPOV, you can use
> texture_map with an image pattern).
>

There an example of code here that gives variable reflections using
image_pattern and texture_map:
http://www.inapg.inra.fr/dsa/temp/makingof6.htm
G

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Yes but with texture_map you cannot control precisely the form
of your map. One can try material_map. So you take your B&W 
images you put the same texture for the black and white index 
but with different finish.

Fabian.


> 

> <ffj### [at] club-internetfr> wrote:
> 
> >Is there a way to do "reflection_map" in POV ?
> 
> Yes, using a texture map of identical textures with the only
> difference being the reflection amount.
> 
> Peter Popov ICQ : 15002700
> Personal e-mail : pet### [at] usanet
> TAG      e-mail : pet### [at] tagpovrayorg

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I wiil give a try with your code.

Thanks a lot.


Does anyone know what new features will be incorporated for the very expected
POV 3.5 ? Ken ?




> Chris Huff wrote:
>

> > <ffj### [at] club-internetfr> wrote:
> >
> > > Is there a way to do "reflection_map" in POV ?
> >
> > This has come up before, I think it was decided that a "finish_map"
> > feature would be more useful, but nobody has implemented it yet. In the
> > mean time, use material_map(or, if you have MegaPOV, you can use
> > texture_map with an image pattern).
> >
>
> There an example of code here that gives variable reflections using
> image_pattern and texture_map:
> http://www.inapg.inra.fr/dsa/temp/makingof6.htm
> G

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