Rendering学習日記

• python cgkit
• 2010.11.23 Tuesday

「実践CGへの誘い」p.28
Listing 2.5
TransformBegin()〜TransformEnd()を使ったサンプル
ありがたいです。

#list25.py

#/* Copyrighted Pixar 1989 */

#/* From the RenderMan Companion p. 28 */

#/* Listing 2.5  Another cube definition */



import cgkit.cri

from cgkit.cgtypes import *



# Load the RenderMan API.

# Replace the library name with whatever renderer you want to use.

ri = cgkit.cri.loadRI("3delight")

cgkit.cri.importRINames(ri, globals())



#/* UnitCube(): Enter a unit cube into the scene */



def UnitCube():

    square = [ [.5,.5,.5], [-.5,.5,.5], [-.5,-.5,.5], [.5,-.5,.5] ]

    RiTransformBegin()

    #/* far square */

    RiPolygon( RI_P, square, RI_NULL)

    #/* right face */

    RiRotate(90.0, 0.0, 1.0, 0.0)

    RiPolygon( RI_P, square, RI_NULL)

    #/* near face */

    RiRotate(90.0, 0.0, 1.0, 0.0)

    RiPolygon( RI_P, square, RI_NULL)

    #/* left face */

    RiRotate(90.0, 0.0, 1.0, 0.0)

    RiPolygon( RI_P, square, RI_NULL)

    RiTransformEnd()

    

    RiTransformBegin()

    #/* bottom face */

    RiRotate(90.0, 1.0, 0.0, 0.0)

    RiPolygon( RI_P, square, RI_NULL)

    RiTransformEnd()

    

    RiTransformBegin()

    #/* top face */

    RiRotate(-90.0, 1.0, 0.0, 0.0)

    RiPolygon( RI_P, square, RI_NULL)

    RiTransformEnd()



color=(.9,.1,.2)



RiBegin(RI_NULL)

RiDisplay("list25.tif", RI_FRAMEBUFFER, RI_RGB)

RiFormat(640,480, -1.0)

RiShadingRate(1.0)

RiLightSource("distantlight", RI_NULL)

RiProjection(RI_PERSPECTIVE)

RiWorldBegin()

RiTranslate(0.0, 0.0, 1.5)

RiRotate(40.0, -1.0, 1.0, 0.0)

RiSurface("matte",RI_NULL)

RiColor(color)

UnitCube()

RiWorldEnd()

RiEnd()

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