OpenGL, OpenSceneGraph, Maya

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OpenGL, OpenSceneGraph, Maya

• Erik Brisson
• ebrisson_at_bu.edu

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Using graphics tools

• OpenGL
• Program from scratch
• Access to all graphics card features
• OpenSceneGraph
• Program using scene graph paradigm
• Lots of utility functions
• Autodesk Maya
• Powerful modeling and animation package
• Highly interactive
• Beautiful rendering

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OpenGL primitives
SCV Visualization Workshop Fall 2008
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OpenGL basic paradigm (cube.c)

• for (i 0 i lt 6 i)
• glBegin(GL_QUADS)
• glNormal3fv(ni0)
• glVertex3fv(vfacesi00)
• glVertex3fv(vfacesi10)
• glVertex3fv(vfacesi20)
• glVertex3fv(vfacesi30)
• glEnd()

SCV Visualization Workshop Fall 2008
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OpenGL simple_xyzc.c output
SCV Visualization Workshop Fall 2008
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OpenSceneGraph

• Open source
• OpenGL based
• Similar to SGI Performer
• Many utility functions
• Notably, 3-D file readers

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OpenSceneGraph demo
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Maya demo
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Image credits

• OpenGL geometric data structures
• The OpenGL Programming Guide (The Red Book)
  Addison-Wesley
• Scene Graph
• www.opensg.org