refactor: Created comparison macros for RREAL and FVECT types
Moved declaration of popen to paths.h and put convert_command() into module
Changed to calling asin() for safety
Fixed bug in rotation computation when X' is aligned with Z-axis
Made scene i/o work for identifiers with spaces and quotes
Increased maximum number of markers from 32 to 128 and added error check
Fixed messed-up RCCS Id at top of file
Added -I option to replmarks to replace markers with mesh instances
Removed outdated -e option sent to xform command
Continued ANSIfication and reduced other compile warnings.
Various compatibility fixes.
Reduced compile warnings/errors on Windows.
Compile fixes for Linux
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
changed M_PI definition to ward off long double problems
Added conditional declaration of atof()
added ability to accept multiple mark modifiers
updated revision number for release 2.0
added -m option to xform
Initial revision
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