Rendering学習日記

prmanでパーティクル。cgkitは使わないです。
イギリスのbournemouth universityを参考にしました。ありがとうございます。Thank you.

#hair2.py

#set PYTHONPATH=C:\Python25;C:\Python\Scripts;%RMANTREE%\bin

import random

from random import uniform as ru

import prman

ri=prman.Ri()



points=[]

pappend=points.append

width=[]

wappend=width.append

npoints=[]

npappend=npoints.append

random.seed(129234)

ru=random.uniform

zpos=-2.0

plus=0.1

minus=-0.1

while(zpos < 2.0 ) :

    xpos=-2.0

    while (xpos < 2.0) :

        pappend(xpos+ru(minus,plus))

        pappend(0)

        pappend(zpos+ru(minus,plus))

        

        pappend(xpos+ru(minus,plus))

        pappend(0.1)

        pappend(zpos+ru(minus,plus))

        

        pappend(xpos+ru(minus,plus))

        pappend(0.2)

        pappend(zpos+ru(minus,plus))

        

        pappend(xpos+ru(minus,plus))

        pappend(0.3+ru(-0.1,0.1))

        pappend(zpos+ru(minus,plus))

        

        wappend(0.006)

        wappend(0.001)

        npappend(4)

        xpos+=0.02

    zpos+=0.02



ri.Begin(ri.RENDER)

ri.Imager("background", {"color color":(.2,.4,.6)})

ri.Display("hair_pr.png", "file", "rgb")

ri.Format(640,480,1)

ri.Projection(ri.PERSPECTIVE, {ri.FOV: 90})

ri.Translate(0,0,2)

ri.Rotate(-25,1,0,0)

ri.WorldBegin()

ri.LightSource("distantlight", {ri.HANDLEID: "1"})

ri.LightSource("ambientlight", {ri.HANDLEID: "2", "intensity":[0.4]})

ri.Color((1,0.2,0.2))

ri.Surface("hair")

ri.Curves( "cubic",npoints,"nonperiodic",{ri.P:points, ri.WIDTH : width})

ri.WorldEnd()

ri.End()

じっくり読んで、勉強します。
繰り返し繰り返しですね。
ありがとうございます。

In depth renderman

イギリスのbournemouth universityを参考にしました。ありがとうございます。Thank you.
import prman使ってます。

#ricurve_pr.py

#set PYTHONPATH=C:\Python25;C:\Python\Scripts;%RMANTREE%\bin

import prman

ri=prman.Ri()



filename="ricurve_pr.rib"



ri.Begin(ri.RENDER)

ri.Imager("background", {"color color":(.2,.4,.6)})

ri.Display ("ricurve_pr.png","file","rgb")

ri.Format(512, 384, -1.0)

ri.PixelSamples( 4, 4)

ri.ShadingRate(1)

ri.Projection(ri.PERSPECTIVE, {ri.FOV: 90})

ri.WorldBegin()

ri.LightSource("distantlight", {ri.HANDLEID: "1","to":[0,0,1]})

ri.LightSource("ambientlight", {ri.HANDLEID: "2", "intensity":[0.4]})

ri.Translate(0,0,1.8)

ri.Surface("plastic")



ri.Color([1,0,0])

points= [0, 0, 0 ,-1, -.5 ,1 ,2 ,.5 ,1 ,1 ,0, -1 ]

width=[0.01,0.04]

ri.Curves( "cubic",[4],"nonperiodic",{ri.P:points, ri.WIDTH : width})



ri.Color([0,0,1])

points2=[0,0,0,3,4,5,-1,-.5,1,2,.5,1,1,0,-1]

ri.Curves("linear",[5],"nonperiodic",{ ri.P:points2 , ri.CONSTANTWIDTH:[0.075]})



ri.WorldEnd()

ri.End()