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「実践CGへの誘い」例題をPythonで行う　その3

「実践CGへの誘い」p.25
Listing 2.3
list23.jpg



#list23.py

# Copyrighted Pixar 1989

# From the RenderMan Companion p. 25

# Listing 2.3   Control over viewer and color



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())



L= -.5      #* For x: left side     */

R=  .5      # /* For x: right side    */

D= -.5     #  /* For y: down side     */

U=  .5     #  /* For y: upper side    */

F=  .5     #  /* For z: far side      */

N= -.5     #  /* For z: near side     */



#/* UnitCube(): define a cube in the graphics environment */

def UnitCube():

    Cube=[

        [ [L,D,F],  [L,D,N],  [R,D,N],  [R,D,F] ],   #/* Bottom face  */

        [ [L,D,F],  [L,U,F],  [L,U,N],  [L,D,N] ],   #/* Left face    */

        [ [R,U,N],  [L,U,N],  [L,U,F],  [R,U,F] ],   #/* Top  face    */

        [ [R,U,N],  [R,U,F],  [R,D,F],  [R,D,N] ],   #/* Right face   */

        [ [R,D,F],  [R,U,F],  [L,U,F],  [L,D,F] ],   #/* Far face     */

        [ [L,U,N],  [R,U,N],  [R,D,N],  [L,D,N] ]    #/* Near face    */

    ];

    for i in range(6):

        RiPolygon(P=Cube[i])





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



color=(.2,.4,.6)



RiBegin(RI_NULL)

RiDisplay("list23.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()

#RiPolygon(P=square)

RiWorldEnd()

RiEnd()

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