Rendering学習日記

• RenderMan
• 2010.11.28 Sunday

ケッソン先生のCG References & Tutorials(fundza.com)の RenderMan Procedural Primitives、Randomnessのサンプルをimport prmanでできるようにしてみた。ありがとうございます。
ri.Points({ri.P:points,ri.CS:colour,ri.CONSTANTWIDTH:size})
TypeError: Problem parsing parameterlist entry: varying color Cs
とエラーが出ていたが、pointsのリスト表記を[[1,2,3],[4,5,6],・・・]としていたのが原因だった。[1,2,3,4,5,6,・・・]となるように書き換えた。

Pointsを50000個、直方体に配置してみました。さらに勉強します。

#rectangularbox_pr2.py

#Modified from RenderMan Procedural Primitives/ Randomness Examples

# in CG References & Tutorials(fundza.com) 



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

import getpass

import time

# import the python renderman library

import prman



import random,math



def randBetween(min, max):

    return random.random() * (max - min) + min 



def length(x, y, z):

    return math.sqrt(x*x + y*y + z*z)



def normalize(x, y, z):

    len = length(x, y, z)

    return x/len, y/len, z/len 



def scaleVector(x, y, z, sc):

    return x*sc, y*sc, z*sc



def box(width, height, depth, num, size):

    points=[]

    pappend=points.append

    for n in range(num):

        x = randBetween(-width/2, width/2)

        y = randBetween(-height/2, height/2)

        z = randBetween(-depth/2, depth/2)

        pappend(x)

        pappend(y)

        pappend(z)

    colour=[]

    for n in range(num):

        r = randBetween(0, 1)

        g = randBetween(0, 1)

        b = randBetween(0, 1)

        colour.append(r)

        colour.append(g)

        colour.append(b)

        

    

    ri.Points({ri.P:points,ri.CS:colour,ri.CONSTANTWIDTH:size})





ri = prman.Ri() # create an instance of the RenderMan interface

ri.Option("rib", {"string asciistyle": "indented"})



filename = "rectangularbox.rib"

ri.Begin(ri.RENDER)

#ri.Begin(filename)

# ArchiveRecord is used to add elements to the rib stream in this case comments

# note the function is overloaded so we can concatinate output

ri.ArchiveRecord(ri.COMMENT, 'File ' +filename)

ri.ArchiveRecord(ri.COMMENT, "Created by " + getpass.getuser())

ri.ArchiveRecord(ri.COMMENT, "Creation Date: " +time.ctime(time.time()))



# now we add the display element using the usual elements

# FILENAME DISPLAY Type Output format

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

ri.Format(512, 384, -1.0)

ri.Imager("background", {"color color":(.76,.79,.82)})

# now set the projection to perspective

ri.Projection(ri.PERSPECTIVE,{ri.FOV:50}) 



# now we start our world

ri.WorldBegin()

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

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



ri.Translate(0,0.25,3)

ri.Rotate(-40,1,0,0)

ri.TransformBegin()

ri.Rotate(35,0,1,0)

ri.Surface("plastic")

box(2.0, 1.0, 2.0, 50000, 0.02)

ri.TransformEnd()

ri.WorldEnd()

ri.End()

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• RenderMan
• 2010.11.28 Sunday

ケッソン先生のページを参照しました。Thank you
import prmanを使っています。
ありがとうございます。
ring(rad, num, size)
ring(1.5, 150, 0.2)

#ring_pr.py

#Modified from RenderMan Procedural Primitives/ Randomness Examples

# in CG References & Tutorials(fundza.com) 



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

import getpass

import time

# import the python renderman library

import prman



import random,math



def randBetween(min, max):

    return random.random() * (max - min) + min 



def length(x, y, z):

    return math.sqrt(x*x + y*y + z*z)



def normalize(x, y, z):

    len = length(x, y, z)

    return x/len, y/len, z/len 



def scaleVector(x, y, z, sc):

    return x*sc, y*sc, z*sc



def ring(rad, num, size):

    points=[]

    pappend=points.append

    for n in range(num):

        x = randBetween(-1, 1)

        y = 0

        z = randBetween(-1, 1)

        x,y,z = normalize(x,y,z)

        x,y,z = scaleVector(x,y,z,rad)

        pappend(x)

        pappend(y)

        pappend(z)

    colour=[]

    for n in range(num):

        r = randBetween(0, 1)

        g = randBetween(0, 1)

        b = randBetween(0, 1)

        colour.append(r)

        colour.append(g)

        colour.append(b)

        

    

    ri.Points({ri.P:points,ri.CS:colour,ri.CONSTANTWIDTH:size})

    





ri = prman.Ri() # create an instance of the RenderMan interface

ri.Option("rib", {"string asciistyle": "indented"})



filename = "rectangularbox.rib"

ri.Begin(ri.RENDER)

#ri.Begin(filename)

# ArchiveRecord is used to add elements to the rib stream in this case comments

# note the function is overloaded so we can concatinate output

ri.ArchiveRecord(ri.COMMENT, 'File ' +filename)

ri.ArchiveRecord(ri.COMMENT, "Created by " + getpass.getuser())

ri.ArchiveRecord(ri.COMMENT, "Creation Date: " +time.ctime(time.time()))



# now we add the display element using the usual elements

# FILENAME DISPLAY Type Output format

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

ri.Format(512, 384, -1.0)

ri.Imager("background", {"color color":(.76,.79,.82)})

# now set the projection to perspective

ri.Projection(ri.PERSPECTIVE,{ri.FOV:50}) 



# now we start our world

ri.WorldBegin()

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

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



ri.Translate(0,0.25,3)

ri.Rotate(-40,1,0,0)

ri.TransformBegin()

ri.Rotate(35,0,1,0)

ri.Surface("plastic")

ring(1.5, 150, 0.2)

ri.TransformEnd()

ri.WorldEnd()

ri.End()

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• RenderMan
• 2010.11.28 Sunday

さらに、diskでやってみました。面白いですね。
import prmanを使っています。

#disk_pr.py

#Modified from RenderMan Procedural Primitives/ Randomness Examples

# in CG References & Tutorials(fundza.com) 



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

import getpass

import time

# import the python renderman library

import prman



import random,math



def randBetween(min, max):

    return random.random() * (max - min) + min 



def length(x, y, z):

    return math.sqrt(x*x + y*y + z*z)



def normalize(x, y, z):

    len = length(x, y, z)

    return x/len, y/len, z/len 



def scaleVector(x, y, z, sc):

    return x*sc, y*sc, z*sc



def disk(rad, num, size):

    points=[]

    pappend=points.append

    for n in range(num):

        x = randBetween(-1, 1)

        y = 0

        z = randBetween(-1, 1)

        x,y,z = normalize(x,y,z)

        randRadius = randBetween(0, rad)

        x,y,z = scaleVector(x,y,z,randRadius)

        pappend(x)

        pappend(y)

        pappend(z)

    colour=[]

    for n in range(num):

        r = randBetween(0, 1)

        g = randBetween(0, 1)

        b = randBetween(0, 1)

        colour.append(r)

        colour.append(g)

        colour.append(b)

        

    

    ri.Points({ri.P:points,ri.CS:colour,ri.CONSTANTWIDTH:size})

    





ri = prman.Ri() # create an instance of the RenderMan interface

ri.Option("rib", {"string asciistyle": "indented"})



filename = "rectangularbox.rib"

ri.Begin(ri.RENDER)

#ri.Begin(filename)

# ArchiveRecord is used to add elements to the rib stream in this case comments

# note the function is overloaded so we can concatinate output

ri.ArchiveRecord(ri.COMMENT, 'File ' +filename)

ri.ArchiveRecord(ri.COMMENT, "Created by " + getpass.getuser())

ri.ArchiveRecord(ri.COMMENT, "Creation Date: " +time.ctime(time.time()))



# now we add the display element using the usual elements

# FILENAME DISPLAY Type Output format

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

ri.Format(512, 384, -1.0)

ri.Imager("background", {"color color":(.76,.79,.82)})

# now set the projection to perspective

ri.Projection(ri.PERSPECTIVE,{ri.FOV:50}) 



# now we start our world

ri.WorldBegin()

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

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



ri.Translate(0,0.25,3)

ri.Rotate(-40,1,0,0)

ri.TransformBegin()

ri.Rotate(35,0,1,0)

ri.Surface("plastic")

disk(1.5, 10000, 0.02)

ri.TransformEnd()

ri.WorldEnd()

ri.End()

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• RenderMan
• 2010.11.28 Sunday

ケッソン先生のページを参照しました。Thank you
import prmanを使っています。
ありがとうございます。円すいを作ってみました。

#cone_pr.py

#Modified from RenderMan Procedural Primitives/ Randomness Examples

# in CG References & Tutorials(fundza.com) 



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

import getpass

import time

# import the python renderman library

import prman



import random,math



def randBetween(min, max):

    return random.random() * (max - min) + min 



def length(x, y, z):

    return math.sqrt(x*x + y*y + z*z)



def normalize(x, y, z):

    len = length(x, y, z)

    return x/len, y/len, z/len 



def scaleVector(x, y, z, sc):

    return x*sc, y*sc, z*sc



def cone(rad, num, size):

    points=[]

    pappend=points.append

    for n in range(num):

        x = randBetween(-1, 1)

        y = 0

        z = randBetween(-1, 1)

        x,y,z = normalize(x,y,z)

        randRadius = randBetween(0, rad)

        x,y,z = scaleVector(x,y,z,randRadius)

        y += 1 - randRadius # <<---

        pappend(x)

        pappend(y)

        pappend(z)

    colour=[]

    for n in range(num):

        r = randBetween(0, 1)

        g = randBetween(0, 1)

        b = randBetween(0, 1)

        colour.append(r)

        colour.append(g)

        colour.append(b)

        

    

    ri.Points({ri.P:points,ri.CS:colour,ri.CONSTANTWIDTH:size})

    





ri = prman.Ri() # create an instance of the RenderMan interface

ri.Option("rib", {"string asciistyle": "indented"})



filename = "cone_pr.rib"

ri.Begin(ri.RENDER)

#ri.Begin(filename)

# ArchiveRecord is used to add elements to the rib stream in this case comments

# note the function is overloaded so we can concatinate output

ri.ArchiveRecord(ri.COMMENT, 'File ' +filename)

ri.ArchiveRecord(ri.COMMENT, "Created by " + getpass.getuser())

ri.ArchiveRecord(ri.COMMENT, "Creation Date: " +time.ctime(time.time()))



# now we add the display element using the usual elements

# FILENAME DISPLAY Type Output format

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

ri.Format(512, 384, -1.0)

ri.Imager("background", {"color color":(.76,.79,.82)})

# now set the projection to perspective

ri.Projection(ri.PERSPECTIVE,{ri.FOV:50}) 



# now we start our world

ri.WorldBegin()

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

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



ri.Translate(0,0.25,3)

ri.Rotate(-40,1,0,0)

ri.TransformBegin()

ri.Rotate(35,0,1,0)

ri.Surface("plastic")

cone(1.5, 10000, 0.02)

ri.TransformEnd()

ri.WorldEnd()

ri.End()

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• RenderMan
• 2010.11.28 Sunday

円柱つくりました。
ケッソン先生のページを参照しました。Thank you
import prmanを使っています。
ありがとうございます。

#cylinder_pr.py

#Modified from RenderMan Procedural Primitives/ Randomness Examples

# in CG References & Tutorials(fundza.com) 



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

import getpass

import time

# import the python renderman library

import prman



import random,math



def randBetween(min, max):

    return random.random() * (max - min) + min 



def length(x, y, z):

    return math.sqrt(x*x + y*y + z*z)



def normalize(x, y, z):

    len = length(x, y, z)

    return x/len, y/len, z/len 



def scaleVector(x, y, z, sc):

    return x*sc, y*sc, z*sc





def cylinder(rad, depth, height, num, size):

    points=[]

    pappend=points.append

    for n in range(num):

        x = randBetween(-1, 1)

        y = 0

        z = randBetween(-1, 1)

        x,y,z = normalize(x,y,z)

        y = randBetween(depth, height) # <<---

        pappend(x)

        pappend(y)

        pappend(z)

    colour=[]

    for n in range(num):

        r = randBetween(0, 1)

        g = randBetween(0, 1)

        b = randBetween(0, 1)

        colour.append(r)

        colour.append(g)

        colour.append(b)

        

    

    ri.Points({ri.P:points,ri.CS:colour,ri.CONSTANTWIDTH:size})

    





ri = prman.Ri() # create an instance of the RenderMan interface

ri.Option("rib", {"string asciistyle": "indented"})



filename = "cylinder_pr.rib"

ri.Begin(ri.RENDER)

#ri.Begin(filename)

# ArchiveRecord is used to add elements to the rib stream in this case comments

# note the function is overloaded so we can concatinate output

ri.ArchiveRecord(ri.COMMENT, 'File ' +filename)

ri.ArchiveRecord(ri.COMMENT, "Created by " + getpass.getuser())

ri.ArchiveRecord(ri.COMMENT, "Creation Date: " +time.ctime(time.time()))



# now we add the display element using the usual elements

# FILENAME DISPLAY Type Output format

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

ri.Format(512, 384, -1.0)

ri.Imager("background", {"color color":(.76,.79,.82)})

# now set the projection to perspective

ri.Projection(ri.PERSPECTIVE,{ri.FOV:50}) 



# now we start our world

ri.WorldBegin()

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

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



ri.Translate(0,0.25,3)

ri.Rotate(-40,1,0,0)

ri.TransformBegin()

ri.Rotate(35,0,1,0)

ri.Surface("plastic")

cylinder(1.5, -1.2, 1.0, 20000, 0.02)

ri.TransformEnd()

ri.WorldEnd()

ri.End()

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• RenderMan
• 2010.11.28 Sunday

球体つくりました。
ケッソン先生のページを参照しました。Thank you
import prmanを使っています。
ありがとうございます。さらに勉強ですね。

#spheres_pr.py

#Modified from RenderMan Procedural Primitives/ Randomness Examples

# in CG References & Tutorials(fundza.com) 



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

import getpass

import time

# import the python renderman library

import prman



import random,math



def randBetween(min, max):

    return random.random() * (max - min) + min 



def length(x, y, z):

    return math.sqrt(x*x + y*y + z*z)



def normalize(x, y, z):

    len = length(x, y, z)

    return x/len, y/len, z/len 



def scaleVector(x, y, z, sc):

    return x*sc, y*sc, z*sc



def spheres(rad, num, size):

    for n in range(num):

        x = randBetween(-1.0, 1.0)

        y = randBetween(-1.0, 1.0)

        z = randBetween(-1.0, 1.0)

        x,y,z = normalize(x,y,z)

        ri.TransformBegin()

        ri.Translate(x,y,z)

        ri.Color((x,y,z))

        ri.Sphere(size, -size, size,360)

        ri.TransformEnd()





ri = prman.Ri() # create an instance of the RenderMan interface

ri.Option("rib", {"string asciistyle": "indented"})



filename = "spheres_pr.rib"

ri.Begin(ri.RENDER)

#ri.Begin(filename)

# ArchiveRecord is used to add elements to the rib stream in this case comments

# note the function is overloaded so we can concatinate output

ri.ArchiveRecord(ri.COMMENT, 'File ' +filename)

ri.ArchiveRecord(ri.COMMENT, "Created by " + getpass.getuser())

ri.ArchiveRecord(ri.COMMENT, "Creation Date: " +time.ctime(time.time()))



# now we add the display element using the usual elements

# FILENAME DISPLAY Type Output format

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

ri.Format(512, 384, -1.0)

ri.Imager("background", {"color color":(.76,.79,.82)})

# now set the projection to perspective

ri.Projection(ri.PERSPECTIVE,{ri.FOV:50}) 



# now we start our world

ri.WorldBegin()

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

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



ri.Translate(0,0,3)

ri.Rotate(-40,1,0,0)

ri.TransformBegin()

ri.Rotate(35,0,1,0)

ri.Surface("plastic")

spheres(1.2, 1000, 0.06)

ri.TransformEnd()

ri.WorldEnd()

ri.End()

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• RenderMan
• 2010.11.28 Sunday

Jon Macey Computer Animation Pages参考にしています。Thank you.
Torus animationです。

#proc_geom.py

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

import getpass

import time

# import the python renderman library

import prman



def TorusWave(ri,nwaves,thetamax) :

    if(nwaves < 1) :

        print "need positive number of waves"

        return

    innerrad = 2.0/(8.0 * nwaves +2)

    ri.Rotate(90.0,1.0,0.0,0.0)

    ri.Sphere(innerrad,-innerrad,0,thetamax)

    outerrad =0.0

    for wave in range(1,nwaves) :

        outerrad=outerrad+(innerrad*2)

        ri.Torus(outerrad,innerrad,0.0,180.0,thetamax)

        outerrad=outerrad+(innerrad*2)

        ri.Torus(outerrad,innerrad,180.0,360.0,thetamax)

    





ri = prman.Ri() # create an instance of the RenderMan interface

ri.Option("rib", {"string asciistyle": "indented"})





for frame in range(1,30) :

    filename = "Wave.%03d.rib" %(frame)

    ri.Begin(ri.RENDER)

    # this is the begining of the rib archive generation we can only

    # make RI calls after this function else we get a core dump

    # ArchiveRecord is used to add elements to the rib stream in this case comments

    # note the function is overloaded so we can concatinate output

    ri.ArchiveRecord(ri.COMMENT, 'File ' +filename)

    ri.ArchiveRecord(ri.COMMENT, "Created by " + getpass.getuser())

    ri.ArchiveRecord(ri.COMMENT, "Creation Date: " +time.ctime(time.time()))

    

    # now we add the display element using the usual elements

    # FILENAME DISPLAY Type Output format

    ri.Display("ProcGeom%03d.tif" %(frame), "file", "rgb")

    # Specify PAL resolution 1:1 pixel Aspect ratio

    ri.Format(512, 384, -1.0)

    # now set the projection to perspective

    ri.Projection(ri.PERSPECTIVE,{ri.FOV:50}) 

    

    # now we start our world

    ri.WorldBegin()

    

    ri.Translate(0,0,2)

    

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

    

    ri.TransformBegin()

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

    TorusWave(ri,frame,360.0)

    ri.TransformEnd()

    ri.WorldEnd()

    

    # and finally end the rib file

    ri.End()

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• RenderMan
• 2010.11.28 Sunday

ドーナツ作り。以前の記事を書き換えたものです。ありがとうございます。

#proc_torus2_pr.py

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

import getpass

import time

# import the python renderman library

import prman



ri = prman.Ri() # create an instance of the RenderMan interface

ri.Option("rib", {"string asciistyle": "indented"})



filename = "proc_geom.rib"



ri.Begin(ri.RENDER)



def TorusWave(ri,nwaves,thetamax) :

	if(nwaves < 1) :

		print "need positive number of waves"

		return

	innerrad = 2.0/(8.0 * nwaves +2)

	ri.Rotate(90.0,1.0,0.0,0.0)

	ri.Sphere(innerrad,-innerrad,0,thetamax)

	outerrad =0.0

	for wave in range(1,nwaves) :

		outerrad=outerrad+(innerrad*2)

		ri.Torus(outerrad,innerrad,0.0,180.0,thetamax)

		outerrad=outerrad+(innerrad*2)

		ri.Torus(outerrad,innerrad,180.0,360.0,thetamax)

		



#ArchiveRecord is used to add elements to the rib stream in this case comments

# note the function is overloaded so we can concatinate output

ri.ArchiveRecord(ri.COMMENT, 'File ' +filename)

ri.ArchiveRecord(ri.COMMENT, "Created by " + getpass.getuser())

ri.ArchiveRecord(ri.COMMENT, "Creation Date: " +time.ctime(time.time()))



# now we add the display element using the usual elements

# FILENAME DISPLAY Type Output format

ri.Display("proc_torus2.png", "file", "rgb")

ri.Format(512, 384, -1.0)

ri.Projection(ri.PERSPECTIVE,{ri.FOV:30}) 



# now we start our world

colours ={

	"red":[1,0,0],

	"white":[1,1,1],

	"green":[0,1,0],

	"blue":[0,0,1],

	"black":[0,0,0],

	"yellow":[1,1,0]

	}



# start our world

ri.WorldBegin()

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

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



ri.Translate(0,0,9) #move the global view position

ri.Surface("plastic")



ri.TransformBegin()

ri.Rotate(40,1,0,0)

ri.Color(colours["red"])

ri.Attribute ("identifier",{"name": "Wave1"})

TorusWave(ri,8,360.0)

ri.TransformEnd()



ri.TransformBegin()

ri.Rotate(55,1,0,0)

ri.Color(colours["green"]) 

ri.Translate(2.2,0,0)

ri.Attribute( "identifier",{ "name" :"Wave2"})

TorusWave(ri,8,360.0)

ri.TransformEnd()



ri.TransformBegin()

ri.Rotate(35,1,0,0)

ri.Color(colours["blue"])

ri.Translate(-2.2,0,0)

ri.Attribute("identifier",{ "name" : "Wave3"})

TorusWave(ri,8,360.0)

ri.TransformEnd()

#end our world



ri.WorldEnd()

ri.End()

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• RenderMan
• 2010.11.28 Sunday

レイトレーシングを使わないで、それらしく見せる反射トリックですね。
レンダリングは速いです。
過去のPixarのC言語によるシーン記述をPythonで書き換えてみました。
まだまだ課題がありますが、チャレンジですね。ありがとうございます。

#generate_scn_pr.py

#Modified from a C program that generates a scene, May,1990, Pixar

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

# import the python renderman library

import prman



ri = prman.Ri() # create an instance of the RenderMan interface

ri.Option("rib", {"string asciistyle": "indented"})



filename = "generate_scn.rib"



"""

 * Set RenderMan options for medium quality/speed tradeoff.

"""



REFLECTION=0





def SetupOptions():

    global REFLECTION

    ASPECT_RATIO=1.33333

    TEXTURE_ROWS=256

    IMAGE_ROWS=300

    gsz = 32

    bktsz = [12, 12]

    splits = 5

    

    #ri.Option("limits", {"gridsize": gsz,"eyesplits",:splits,"bucketsize": bktsz})

    ri.ShadingRate(2.)

    ri.PixelSamples(2., 2.)

    ri.PixelFilter(ri.BoxFilter, 1., 1.)

    

    if REFLECTION:

        ri.Display("refl.tif","file", "rgb")

        ri.Format(TEXTURE_ROWS, TEXTURE_ROWS, ASPECT_RATIO);

    else:

        ri.Display("generate_scn.tif","file", "rgb")

        ri.Format(512, 384, -1.0)

    



"""

/*

 * Set RenderMan camera parameters.

 */

"""



def SetupCamera():

    global REFLECTION

    m = [

    .970143, -0.004705, -.24249, 0,

    0, .999812, -0.0193992, 0,

    .242536, 0.01882, .96996, 0,

    -7.27607, -1.96434, 53.406, 1

    ]

    

    fov = 25.0

    

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

    ri.Transform(m)

    

    if REFLECTION:

        #/* Transform z=0 plane to coincide with reflection plane. */

        ri.Translate(0., 0., -0.05)

        

        #/* Reflect camera through the reflection plane z=0. */

        ri.Scale(1., 1., -1.)

        #/* Transform reflection plane back to z=0. */

        ri.Translate(0., 0., 0.05);





"""

 * The model consists of three "walls" of a room (actually two

 * walls and the floor) with a mirror on one of the walls.

 * When rendering the REFLECTION image, the mirror

 * and the wall it is hanging on are both removed so that

 * the camera can see into the room from the other side of

 * the wall.

"""



def SetupModel():

    global REFLECTION

    c = [[ 0.5, 0.4, 0.1], [ 0.3, 0.5, 0.5],[ 1, 1, 1], [ 0.4, 0.2, 0.7]]

    

    if REFLECTION:

        NWALLS=2  #/* Just do two walls. */

        walls = [ [0, 0, -100,  0, 0, 0, 100, 0, -100, 100, 0, 0],[0, 100, -100, 0, 100, 0,  0, 0, -100, 0, 0, 0]]

    else:

        #ri.MakeTexture( "refl.tif", "refl.tex", "periodic", "periodic", "gaussian", 1, 1)

        NWALLS=3     #/* Do three walls and mirror. */

        walls = [ [0, 0, -100,  0, 0, 0,  100, 0, -100, 100, 0, 0],[ 0, 100, -100, 0, 100, 0,  0, 0, -100,  0, 0, 0],[ 0, 100, 0, 100, 100, 0, 0, 0, 0 , 100, 0, 0]]

        mirror = [ 5, 10.5, -.05,  10, 10.5, -.05,5, 0.5, -.05, 10, 0.5, -.05]

        

        ri.AttributeBegin()

        ri.Color(c[2])

        ri.Surface("texmap",{'string texname':"refl.tex"})

        #ri.Surface("shinymetal",{'string texturename':"refl.tex"})

        ri.Patch("bilinear",{'P': mirror})

        ri.AttributeEnd()

        

    

    ri.Color(c[0])

    for i in range(NWALLS):

        ri.Patch("bilinear",{'P': walls[i]})

        ri.Color(c[1])

        

    #/* Put a teapot in the room. */

    ri.Color(c[3])

    ri.TransformBegin()

    ri.Translate(5., 1., -2.)

    ri.Rotate(90., 0., 1., 0.)

    ri.Rotate(-90., 1., 0., 0.)

    ri.Geometry("teapot")

    ri.TransformEnd()

    



ri.Begin(ri.RENDER)



SetupCamera()



SetupOptions()



# start our world

ri.WorldBegin()

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

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



SetupModel()



ri.WorldEnd()

ri.End()

テクスチャについては、
MakeTexture "refl.tif" "refl.tex" "periodic" "periodic" "gaussian" 1 1
を記述したRIBを使ってtexファイルを出力しました。
Wrong state to call RiMakeTexture.なので、調べます。ありがとうございます。

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• RenderMan
• 2010.11.30 Tuesday

jrMan is an open source.
javaは、使ったことがないが、jrManのsrcフォルダにあるjavaファイルをコンパイルする。

>javac GenCubes.java

GenCubes.classが作成される。
次に、

>java GenCubes

と打つと、RIBが表示される。
RIBをファイル出力したいなら、

>java GenCubes >cubes.rib

と打つと、cubes.ribが出力される。

こんな感じです。
TransformBegin
Translate -40 10 -40
Scale 2 2 2
ReadArchive "cube.rib"
TransformEnd
TransformBegin
Translate -20 10 -40
Scale 2 2 2
ReadArchive "cube.rib"
TransformEnd
TransformBegin
Translate 0 10 -40
Scale 2 2 2
ReadArchive "cube.rib"
TransformEnd
TransformBegin
Translate 20 10 -40
Scale 2 2 2
ReadArchive "cube.rib"
TransformEnd
・・・・・・・
ひさしぶり、振り返ってみると
忘れていますね。くりかえし勉強です。
ありがとうございます。


jrManのダウンロードはこちら

javacを使うためには、JRE JDKをインストールしておきます。
さらに、Pathに
インストール先を追加
たとえば、
;C:\Program Files (x86)\Java\jdk1.6.0_22\bin
を環境変数Pathに追加しておきます。

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