A tutorial looking at using point clouds in shading, and the pcopen, pciterate, and pcimport nodes in VOPs. It also gives a further example of a POP network.
A point cloud is just a collection of points with their associated attributes (position, normal etc) which is usually recorded in a file. Nodes in VOPs allow you to access points near to a chosen position, and examine their attributes.
This first part establishes the basics of the scene and sets up the POP network.
The project file is available from sites.google.com/site/pqhoudinitutorial/
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