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Saturday, 23 October 2010 1 #declare a string so we can refer to the Object by name 2 Declare "Spheres" "string" 3 # Now we actually create the Object 4 5 ObjectBegin "Spheres" 6 Sphere 1 -1 1 360 7 Translate 0 0 2 8 Scale 0.5 0.5 0.5 9 Sphere 1 -1 1 360 10 ObjectEnd 11 12 Display "min.tiff" "framebuffer" "rgba" 13 Projection "perspective" "fov" [30] 14 15 # start our world 16 WorldBegin 17 Translate 0 0 14 #move the global view position 18 Rotate 90 1 0 0 19 Color [1 0 0] 20 Attribute "identifier" "name" ["Spheres1"] 21 ObjectInstance "Spheres" 22 Color [0 1 0] 23 Translate 3.2 0 0 24 Attribute "identifier" "name" ["Spheres2"] 25 ObjectInstance "Spheres" 26 Color [0 0 1] 27 Translate -6.2 0 0 28 Attribute "identifier" "name" ["Spheres3"] 29 ObjectInstance "Spheres" 30 #end our world 31 WorldEnd
Named Primitives • It is occasionally useful to give names to individual primitives. For example, when a primitive won't split at the eye plane (see Section 4.8 prman docs) it can be desirable to know which primitive is causing the problem.This can be done using the attribute identifier with the parameter name, as in: 1 RtString name[1] = {"Gigi"}; 2 RiAttribute("identifier","name",(RtPointer)name,RI_NULL); 3 4 or 5 6 Attribute "identifier" "name" ["Spheres3"] • All defined primitives will have this name until the graphics stack is popped (with RiAttributeEnd) or another such RiAttribute call is made. • The error message would then contain a reference to a specific primitive name instead of the mysterious . Saturday, 23 October 2010
Page 1 and 2: Introduction to Renderman using the
Page 3 and 4: Renderman Python • As of Version
Page 5 and 6: Hello World Renderman style • A r
Page 7 and 8: Python Version • The python scrip
Page 9 and 10: Python Path 1 #!/usr/bin/python •
Page 11 and 12: Basic Renderman commands 1 import p
Page 13 and 14: Rib layout • When writing rib fil
Page 15 and 16: Set the display options (file,displ
Page 17 and 18: Transforms 1 ##RenderMan RIB 2 #Fil
Page 19 and 20: ouping Transforms 1 ##RenderMan RIB
Page 21 and 22: Affine Transforms 1 import prman 2
Page 23 and 24: Primitives Renderman Primitives [2]
Page 25 and 26: Note Hyperboloid takes two Points a
Page 27 and 28: Parameter Lists • The parameters
Page 29 and 30: What No Cube? • PRman uses patche
Page 31 and 32: Python Cube Function • The previo
Page 33 and 34: Python Dictionaries • Python dict
Page 35 and 36: Adding Colour • To change the col
Page 37 and 38: Attributes 1 WorldBegin 2 Translate
Page 39 and 40: 1 Preamble and global variable decl
Page 41 and 42: Attributes • Attributes are flags
Page 43 and 44: Shading Rate • This is probably t
Page 45 and 46: Shading Rate III • As long as the
Page 47: Objects • A single geometric prim
Page 51 and 52: 1 ri = prman.Ri() # create an insta
Page 53 and 54: Frame Buffer Control • There are
Page 55 and 56: OpenEXR Driver • This display dri
Page 57 and 58: Search Paths • PhotoRealistic Ren
Page 59 and 60: ReadArchive • The ReadArchive com
Page 61 and 62: Procedural Geometry • The torus w
Page 63 and 64: Exercise • Try to build this Scen
Page 65: References • [1] Ian Stephenson.

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