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- // Persistence of Vision Raytracer
- // MTMAND.POV By Dan Farmer
- // Modified by Tim Wegner
-
- #include "shapes.inc"
- #include "colors.inc"
- #include "textures.inc"
- #declare PlanetColor = color red 0.65 green 0.65 blue 1.00
-
- // The following constants simply make it easier to swap images of different
- //scales. Change ScaleX and ScaleZ if you generated the MTMAND.POT file at
- // a resolution different from 360 x 480 which Dan used.
-
- #declare ScaleX = 0.5625 // 360/(pot image width)
- #declare ScaleZ = 1.0 // 480/(pot image height)
-
- camera {
- location <-150.0 300.0 -650.0>
- direction <0.0 0.0 4.0> // "Telephoto" lens, "compresses" distance
- up <0.0 1.0 0.0> // The distance also seems to smooth the h-field
- right <1.333333 0.0 0.0>
- look_at <-40.0 150.0 0.0>
- }
-
- // Define a couple of colors for the light sources.
- #declare MainLight = color red 0.8 green 0.8 blue 0.8
- #declare FillLight = color red 0.23 green 0.23 blue 0.25
- // Light source (main)
- object { light_source { <-400.0 300.0 -60.0> color MainLight } }
- // Light source ( shadow filler )
- object { light_source { <-50.0 300.0 -60.0> color FillLight } }
-
- object {
- height_field {
- // 16 bit continuous potential Fractint fractal,
- // floating point activated to allow a large bailout value
- // Fractint parameters are:
- // type=mandel
- // corners=-0.1992/-0.1099914/1.0000046/1.06707
- // float=yes
- // maxiter=1500
- // potential=255/2200/1000/16bit
- // savename=mtmand
-
- pot "mtmand.pot"
- scale <640 256 480>
- water_level 0.0
- }
-
- texture {
- 0.025 // dither - not used often, but this image needs it.
- color White
- ambient 0.2 // Very dark shadows
- diffuse 0.8 // Whiten the whites
- phong 0.75 // Fairly shiny
- phong_size 100.0 // with tight highlights
- specular 1.0
- roughness 0.005
- }
- scale <ScaleX 0.5 ScaleZ> // Reduce the height, scale to 360 x 480
- translate <-180 0.0 -240> // Center the image by half of ScaleX and ScaleZ
- color Brown
- }
-
- // Sky sphere
- object {
- sphere { <0.0 0.0 0.0> 1200.0 }
- color SummerSky
- texture {
- gradient <0 1 0> // Fade from yellow to orange to red to black
- color_map {
- [0.00 0.10 color Yellow color Orange] // Yellow at horizon
- [0.10 0.15 color Orange color Red] // Fade to orange to red
- [0.15 0.27 color Red color Black ] // then to dark red
- [0.27 1.01 color Black color Black ] // to Black at zenith
- }
- scale <1000 1000 1000> // Big enough to surround the universe
- translate <0.0 -240.0 0.0> // This ajusts for the viewer position
- ambient 1.0 // Keep objects from casting shadows
- diffuse 0.0 // All light comes from ambient sources
- }
- }
-
-
- object { // Planet
- sphere { <-95.0 50.0 600.0> 35.0 }
- texture {
- color PlanetColor
- bump_map { // Bump texture with corresponding julia image
- // type=julia
- // corners=-1.568/1.568/-1.176/1.176
- // params=-0.1545957/1.0335373
- // float=yes
- // maxiter=256
- <1.0 -1.0 0.0> gif "mtmandj.gif"
- bump_size 15.0
- interpolate 4.0 // Smooth the image
- }
- // mapped image is 1x1x1, with lower left corner at 0,0,0
- translate <-0.5 -0.5 0.0> // Center the image at origin
- scale <35.0 35.0 35.0>
- rotate <0.0 00.0 95.0> // Tweak the positioning a little
- specular 0.35 // Fairly "dull" surface
- roughness 0.5 // spread the highlight
- ambient 0.0 // Dark shadows
- diffuse 0.75
- }
- }
-
- // end of file
-