Fixed bugs in black glass transmission and source weight computation
Added -R option for pure Monte Carlo rendering, replacing -DMC compile option
Fixe in rtcontrib -M option
Fixed bug where rtrace would quit after 2^31 primary rays
Changed rtrace to default to Russian roulette ray termination
Added binary i/o options to total and piped output to rtcontrib
Got rtcontrib working and wrote basic man page
Created rtcontrib program for computing ray contributions and coefficients
Extensive changes to enable rtrace -oTW option for tracking ray contributions
Added -oM option to rtrace to output material
Increased defaults and allowed for compiler override related to -a{E,I} options
Continued ANSIfication. There are only bits and pieces left now.
Increased -aa default settings
More adjustments and corrections to default parameters
Increased default ambient options in rpict, rtrace, rview, rad & mkillum
Eliminated copystruct() macro, which is unnecessary in ANSI. Reduced ambiguity warnings for nested if/if/else clauses.
Minor compile fixes
Replaced most outdated BSD function calls with their posix equivalents, and cleaned up a few other platform dependencies.
Macros for setting binary file mode. Replacing MSDOS by _WIN32.
Added rtrace -oc option to output local (u,v) coordinates
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
modified code so zero record flushing happens unless -x > 0 && -y > 0
added -ld boolean option to rtrace for limiting ray distance
changed rtrace behavior to send bogus record when ray dir==0
fixed bug in printing void materials.
changed albedo to 3-color parameter
added -aw option for ambient value weight
added M_MIST (mist) material and global participating medium
increase default parameters for more accurate calculations
added -bv option for back face visibility (normally on)
added -vo and -va (fore and aft clipping plane) view options
consistency improvements related to -I option
added -ti, -te, -tI and -tE options to rtrace for exclude/include traces
made sure that -I option completely overrides -o option
portability fixes (removed gcc warnings)
bug fixes and improvements on stdio flushing
added -P and -PP persist options
changed -di to ! -dv
added -oN for unperturbed surface normal and made -on perturbed
added setmode(fd,O_BINARY) where needed for MSDOS
fixed bug introduced in last change with -h- option of rtrace
added ability to print COLRFMT output of values
added -oL output option for single-ray length
changed default values and handling of specthresh
added -sj and -st options and changed old -s options to -p
removed atof() declarations for NeXT
updated revision number for release 2.0
added source sampling (-ds option)
got rid of scanf() call
added -di option for direct source invisibility
increased defaults for -dp parameter
added virtual source visibility pretesting
added virtual sources
added stratified random sampling with urand
added -i option for irradiance calculation
added -oI option for irradiance after intersection
added conditional ray casting to rtrace for efficiency
Nit-picking for Stardent C-compiler
Added rt field to RAY structure for more accurate z-buffering
improved portability and speed of bcopy()
added flushing for zero input direction vector
Reduced default ambient resolution
Added direct certainty variable (compromise btwn. thresh. & tol.)
Changed direct threshold testing so that it is certain
Efficient approximation to direct component with many sources Glow type changed Spot type eliminated
eliminated unused variable
Initial revision
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