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- POV-Ray Tutorial
Design di Superfici
- Colori e Texture
Index
Sintassi di texture
Testure pronto per l'uso
Colori Do-it-yourself
Motivi - patterns
Liste di motivi
Warps
uv_mapping
Mapping
- metodi di mapping
- color_map{...}
- pigment_map{...}
- texture_map{...}
- normal_map{...}
- average
- material_map{...}
- image_map{...}
- image_map+gif 1
- image_map+gif 2
> image_map+gamma
- bump_map{ ... }
- transparency maps 1
- transparency maps 2
- transparency maps 3
Sovrapposizioni
Vostre testure
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"image_map{ ... }" e "gamma"
Una nuova funzione per immagini in image_map, nuovo in POV-Ray version 3.7
C'è una grande differenza tra POV-Ray version 3.6.2 e version 3.7
nella gestione la gamma delle immagini utilizzate in image_map:
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"image_map" con POV-Ray 3.6.2:
//--------------------------------------
#version 3.6;
global_settings{ assumed_gamma 1.0 }
#default{ finish{ ambient 0.1 diffuse 0.9}}
//--------------------------------------
// ...
// box with layered textures
box { < -0.04, -0.04,0>,< 1.03, 1.04, 0.01>
// 1st layer: White
texture{
pigment{ color rgb<1,1,1>*1.1 }
finish{ phong 1}
} // ------------------------------
// 2nd layer: image_map
texture{
pigment{
image_map{
jpeg "Image_gamma_0.jpg"
map_type 0
interpolate 2
once
} // end of image_map
} // end of pigment
} // end of texture
scale <4/3,1,1>*1.75
translate<-1.5,0.1,-2>
} // end of box //----------------------- |
Un macro per l'adattamento di gamma d'immagine
in image_maps con POV-Ray version 3.6.2. è
qui.
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L' immagine usato qui per image_map
Image file: Image_gamma_0.jpg
image_map con POV-Ray 3.6 ... un problema gamma!
POV-Ray 3.6.2 scene file: Image_gamma36_1.pov
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"image_map" con POV-Ray 3.7 (RC6):
//--------------------------------------
#version 3.7;
global_settings{ assumed_gamma 1.0 }
#default{ finish{ ambient 0.1 diffuse 0.9}}
//--------------------------------------
// ...
// box with layered textures
box { < -0.04, -0.04,0>,< 1.03, 1.04, 0.01>
// 1st layer: White
texture{
pigment{ color rgb<1,1,1>*1.1 }
finish{ phong 1}
} // ------------------------------
// 2nd layer: image_map
texture{
pigment{
image_map{
jpeg "Image_gamma_0.jpg"
map_type 0
interpolate 2
once
} // end of image_map
} // end of pigment
} // end of texture
scale <4/3,1,1>*1.75
translate<-1.5,0.1,-2>
} // end of box //----------------------- |
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image_map con POV-Ray 3.7, default gamma handling
POV-Ray 3.7 scene file: Image_gamma37_1.pov
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"image_map" in POV-Ray 3.7 (RC6)
con correzine gamma con immagine input:
Possiamo definire un gamma diffente del default gamma!
// box with layered textures
box { < -0.04, -0.04,0>,< 1.03, 1.04, 0.01>
// 1st layer: White
texture{
pigment{ color rgb<1,1,1>*1.1 }
finish{ phong 1}
} // ------------------------------
// 2nd layer: image_map
texture{
pigment{
image_map{
jpeg "Image_gamma_0.jpg"
gamma 2.0
map_type 0
interpolate 2
once
} // end of image_map
} // end of pigment
} // end of texture
scale <4/3,1,1>*1.75
translate<-1.5,0.1,-2>
} // end of box //----------------------- |
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image_map con POV-Ray 3.7 e 'gamma 2.0'
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"image_map" con POV-Ray 3.7 (RC6)
con correzione gamma + emission:
// box with layered textures
box { < -0.04, -0.04,0>,< 1.03, 1.04, 0.01>
// 1st layer: White
texture{
pigment{ color rgb<1,1,1>*1.1 }
finish{ phong 1}
} // ------------------------------
// 2nd layer: image_map
texture{
pigment{
image_map{
jpeg "Image_gamma_0.jpg"
gamma 2.5
map_type 0
interpolate 2
once
} // end of image_map
} // end of pigment
finish{ emission 0.3 }
} // end of texture
scale <4/3,1,1>*1.75
translate<-1.5,0.1,-2>
} // end of box //----------------------- |
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image_map con POV-Ray 3.7
e 'gamma 2.5' + 'emission 0.3'
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