A quick example to illustrate the finish maps in mlpov, here we use the same
map for specular and reflection but they could have been different.
Unfortunately the patch is far from complete (there are problems with
transformations, etc)

#declare fmap = function { pigment { image_map { jpeg "metal_44_s.jpg"
map_type 1 interpolate 2 } } }
#declare fmap_g = function { fmap(x,y,z).gray * 2 }
...
finish {
  ambient .1
  diffuse .6
  specular fmap_g
  reflection fmap
  roughness .01
}

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Attachments:
Download 'metal_44_s.jpg' (47 KB) Download 'finish.jpg' (22 KB)

Preview of image 'metal_44_s.jpg'

Preview of image 'finish.jpg'

*blinks*

Hhhheyyyyyyy...

I wannit!

-- 
Tim Cook
http://home.bellsouth.net/p/PWP-empyrean

-----BEGIN GEEK CODE BLOCK-----
Version: 3.12
GFA dpu- s: a?-- C++(++++) U P? L E--- W++(+++)>$
N++ o? K- w(+) O? M-(--) V? PS+(+++) PE(--) Y(--)
PGP-(--) t* 5++>+++++ X+ R* tv+ b++(+++) DI
D++(---) G(++) e*>++ h+ !r--- !y--
------END GEEK CODE BLOCK------

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I think we all do!

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Is there any way to get it working with uv_mapping?

--
-Jide

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> Is there any way to get it working with uv_mapping?

yes, by adding the keyword "uv_mapping" in the finish

M

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Mael wrote:
>A quick example to illustrate the finish maps in mlpov, here we use the same
>map for specular and reflection but they could have been different.
>Unfortunately the patch is far from complete (there are problems with
>transformations, etc)
>
>#declare fmap = function { pigment { image_map { jpeg "metal_44_s.jpg"
>map_type 1 interpolate 2 } } }
>#declare fmap_g = function { fmap(x,y,z).gray * 2 }
>....
>finish {
>  ambient .1
>  diffuse .6
>  specular fmap_g
>  reflection fmap
>  roughness .01
>}
>

Yes, this looks very usefull!  Actualy I wondered why there was  no finish
map in the official release...

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Mael wrote:
> > Is there any way to get it working with uv_mapping?
>
> yes, by adding the keyword "uv_mapping" in the finish

Thanks, it really does work!

I didn't think of adding it to the finish, I tried it in the pigment
function which didn't work (needless to say?)

--
-Jide

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> I didn't think of adding it to the finish, I tried it in the pigment
> function which didn't work (needless to say?)

You need MegaPOV or MLpov.
I suggest the newest incarnation of MegaPOV:

http://www.schunter.etc.tu-bs.de/~chris/megapov/

(temporary link)

Regards,
Hugo

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Hugo Asm wrote:
> > I didn't think of adding it to the finish, I tried it in the pigment
> > function which didn't work (needless to say?)
>
> You need MegaPOV or MLpov.
> I suggest the newest incarnation of MegaPOV:
>
> http://www.schunter.etc.tu-bs.de/~chris/megapov/
>

Yeah, I know. I have MLPov

--
-Jide

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3e686d42@news.povray.org...
> A quick example to illustrate the finish maps in mlpov, here we use the
same
> map for specular and reflection but they could have been different.
> Unfortunately the patch is far from complete (there are problems with
> transformations, etc)

Note that for those who can't wait for the patch, finish map effects can
already be done using image_pattern. The patch may have other advantages of
course.

G.


#include "colors.inc"
global_settings {assumed_gamma 1.0}
camera {location -z*4+y*0.5 direction 1.5*z   right
x*image_width/image_height look_at <0.0, 0.0,  0.0>}
sky_sphere {pigment {gradient y color_map {[0.0 rgb <0.6,0.7,1.0>][0.7 rgb
<0.0,0.1,0.8>]}}}
light_source { 0, rgb 1 translate -z*50 rotate x*30 rotate y*-70}
light_source { 0, rgb 0.5 translate -z*50 rotate x*20 rotate y*50}
plane {  y, -1  pigment { color rgb <0.7,0.5,0.3> }}
#declare N_Sphere=normal{
    average
    normal_map{
        [2 bump_map{jpeg "metal_44_s.jpg" map_type 1 interpolate 2 }
bump_size 0.2]
        [1 bumps 0.4 scale 1/100 ]
    }
}
sphere {
    0.0, 1
    texture {
        image_pattern{jpeg "metal_44_s.jpg" map_type 1 interpolate 2 }
        texture_map{
            [0 pigment{Red*0.1} normal{N_Sphere} finish{ambient 0 diffuse
0.6 specular 0.1 reflection 0 roughness 0.01}]
            [0.001 pigment{White*0.1} normal{N_Sphere} finish{ambient 0
diffuse 0.6 specular 0.1 reflection 0 roughness 0.01}]
            [0.2 pigment{White*0.5} normal{N_Sphere} finish{ambient 0
diffuse 0.6 specular 0.1 reflection 0 roughness 0.01}]
            [0.6 pigment{White*0.5} normal{N_Sphere } finish{ambient 0
diffuse 0.6 specular 1 reflection {0.3,0.8} roughness 0.03}]
        }
    }
    rotate y*20
}

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Attachments:
Download 'test_finishmap.jpg' (11 KB)

Preview of image 'test_finishmap.jpg'