Replaced inline copyright notice with #include "copyright.h"
Changes and check-in for 3.5 release Includes new source files and modifications not recorded for many years See ray/doc/notes/ReleaseNotes for notes between 3.1 and 3.5 release
added viewopt() routine to get minimal view specification
added cylindrical view type
added -vo and -va (fore and aft clipping plane) parameters
portability improvements
Removed problematic math function declarations
updated revision number for release 2.0
added VIEWSTRL
added fisheye view types
improved portability of bcopy()
got rid of resolution and added shift and lift options
changed vhs2 and vvs2 to vhn2 and vvn2
added pixelview() and sskip() routines
Initial revision
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