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I've noticed that when I use an image map, the surface is usually very low
contrast and/or low saturation. Is there some setting (i.e. specular -
I've tried turning specular off and it doesn't help) that has an effect
here? How (aside from tweaking the image map) can I fix this?
The attached image shows the image map in the background and a rendering in
the foreground. I've fixed this in the past for backgrounds by using
lightgroups and ambient = 1 for the background image map, but in this case
I need the object with the image map to interact with the light.
Any ideas?
Thanks!
Mike
Code:
#declare mars_tex = texture {
pigment {
image_map {
jpeg "mars_nasa_jpl.jpg" // the file to read
(iff/tga/gif/png/jpeg/tiff/sys)
map_type 1 // 0=planar, 1=spherical, 2=cylindrical, 5=torus
interpolate 2 // 0=none, 1=linear, 2=bilinear, 4=normalized distance
once // for no repetitive tiling
} // image_map
}
finish { // (---surface finish---)
ambient 0.05
specular 0.2 // shiny
roughness 1/100
}
}
light_source {
0*x // light's position (translated below)
color rgb <255, 255, 251>/255 // light's color
area_light
<10*Re, 0, 0> <0, 0, 10*Re> // lights spread out across this distance (x *
z)
20, 20 // total number of lights in grid (4x*4z = 16
lights)
adaptive 2 // 0,1,2,3...
circular // make the shape of the light circular
orient // orient light
translate <5*Re, 10*Re, Re> // <x y z> position of light
}
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Attachments:
Download 'mars.jpg' (28 KB)
Preview of image 'mars.jpg'
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