Rendering学習日記

#sphere_check.pyg

Output ("sphere_check.tif", "tiff", "rgb", "camera", "float gain", 1, "float gamma",

 1, "string filter", "gaussian", "float[2] filterwidth", (2, 2))

Attribute ("string projection", "perspective")

Attribute ("float fov", 45)

Attribute ("int[2] resolution", (640, 480))

Light ("light1", "ambientlight", "float intensity", 0.1)

Light ("light2", "distantlight", "point from", (1, 1, -1), "point to", (0, 0, 0)

, "float intensity", 1.5)

Rotate (-10.14, 1, 0, 0)

Rotate (26.57, 0, 1, 0)

Translate (-5, -2, 10)

World ()



ShaderGroupBegin ()

Attribute ("color C", (1, 1, 0))

Shader ("surface", "checker", "checklayer","float stilesize",0.1,"float ttilesize",0.1,"color color2", ( 0, 0, 1 ))

Shader ("surface", "plastic", "plasticlayer")

ConnectShaders ("checklayer", "Cout", "plasticlayer", "C")

ConnectShaders ("checklayer", "fout", "plasticlayer", "Ks")

ShaderGroupEnd ()

Rotate (90, 1, 0, 0)

Sphere (3, -3, 3, 360)

Render()

Shaderをレイヤーで合わせることができるから、ちょっと面白いかも。
とりあえず、繰り返し処理はfor文を使う。

#box_check.pyg

Output ("box_check.tif", "tiff", "rgb", "camera", "float gain", 1, "float gamma",

 1, "string filter", "gaussian", "float[2] filterwidth", (2, 2))

Attribute ("float shadingquality",1.2)

Attribute ("string projection", "perspective")

Attribute ("float fov", 20)

Attribute ("int[2] resolution", (640, 480))

#placecam 10 5 -10 0 0 0

Rotate (-19.47, 1.00, 0.00, 0.00)

Rotate (45.00, 0.00, 1.00, 0.00)

Translate (-10.00, -5.00, 10.00)



#Attribute ( "int ray:shadows", 0 )

Attribute ("string geometryset", "+shadows")

Attribute ("string geometryset", "+reflection")



World ()

Light ("light1", "pointlight", "float intensity", 400, "point from", (-10, 10, -10),"string shadowname", "shadows")

Light ("light2", "pointlight", "float intensity", 400, "point from", (10, 10, -10),"string shadowname", "shadows")



PushTransform ()

Attribute ("color C", (0.2, 0.4, 0.75))

Sphere (100, -100, 100, 360)

PopTransform ()



for i in range(5):

    PushTransform ()

    Attribute ("color C", (1, 1, 1))

    Shader ( "surface", "metal","string envname","reflection" )

    #Shader ("surface", "plastic")

    i=1.2*i

    Translate ( 0, 0.5, i-2)

    Input ("BoxGeom.rib")

    PopTransform ()





Attribute ("color C", (1, 1, 1))

Rotate (90.00, 1.00, 0.00, 0.00)

ShaderGroupBegin ()

Shader ("surface", "checker","layer1","float stilesize", .1, "float ttilesize", .1)

Shader ("surface", "plastic", "layer2")

ConnectShaders ("layer1", "Cout", "layer2", "C")

ShaderGroupEnd ()

Input("PlaneGeom.rib")

Render()

まず、AO(ambient-occlusion)を求める。

#sphere32ao.pyg



Attribute ("int ray:maxdepth", 1)



Output ("sphere32ao.tif", "tiff", "rgb", "camera", "float gain", 1, "float gamma",

 1, "string filter", "gaussian", "float[2] filterwidth", (2, 2))

Attribute ("float shadingquality",2)

Attribute ("string projection", "perspective")

Attribute ("float fov", 13)

Attribute ("int[2] resolution", (640, 480))

#placecam -20 15 0 0 0 0

Rotate (-36.87, 1.00, 0.00, 0.00)

Rotate (-90.00, 0.00, 1.00, 0.00)

Translate (20.00, -15.00, 0.00)



Attribute ("string occlusion:spatialdb", "occ.sdb");

Attribute ("string spatialdb:write", "occ.sdb");



World ()

Shader ("surface", "ambocclude", "string occlusionname", "localocclusion", "float samples", 256, "float bias", 0.01)



Attribute ("string geometryset", "+localocclusion")

Attribute ("float occlusion:maxpixeldist", 20)

Attribute ("float occlusion:maxerror", 0.25)



PushTransform ()

Attribute ("color C", (1, 1, 0.25))  #yellow

Translate ( 0, 1, 0)

Sphere (1, -1, 1, 360)

PopTransform ()



PushTransform ()

Attribute ("color C", (0.25, 0.25, 1))  #blue

Translate ( 0, 1, 2.5)

Sphere (1, -1, 1, 360)

PopTransform ()



PushTransform ()

Attribute ("color C", (1, 0.25, 0.25))  #red

Translate ( 0, 1, -2.5)

Sphere (1, -1, 1, 360)

PopTransform ()



Attribute ("color C", (1, 1, 1))

Rotate (90.00, 1.00, 0.00, 0.00)

Input("PlaneGeom.rib")

Render()

つづいて、Photoshopでレイヤーに入れて乗算処理する。