Fixed return-value checking for viewloc()
Removed extraneous "extern" and "register" qualifiers
Further tweaked viewloc() output to be 1 only if in view frame
Ansification and prototypes.
Added grouping parens to reduce ambiguity warnings.
Compile fixes noticed on Compaq
Replaced most outdated BSD function calls with their posix equivalents, and cleaned up a few other platform dependencies.
Changed instances of "int4" to "int32" and "int2" to "int16"
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
reduced NNEIGH default from 7 to 5 changed random sampling function to use sampled Voronoi regions
final cut on random resampling algorithm -- fairer choice algorithm
second cut at random sampling -- variable randomness
first cut at random resampling algorithm
bug fix in occlusion culling
put weighting function initialization into separate routine
finished discontinuity implementation and fixed various bugs
added kernel and occlusion culling
Initial revision
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