wfpokorny

Numerical inaccuracy in shapes2.inc

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### Summary Numerical inaccuracy in shapes2.inc's as reported by Robert Munyer on July 21, 2019 in the newsgroup threads: http://news.povray.org/povray.binaries.images/thread/%3C87imrvxg7g.fsf%40munyer.com%3E/ and http://news.povray.org/povray.general/thread/%3C5d357b5e%241%40news.povray.org%3E/ ### Environment A shipped include file, so any...

Investigate and review use of CRITICAL_LENGTH in code.

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### Summary Issue originally raised by Andreas Kaiser in a post to povray.bugreports news group. See the thread at: http://news.povray.org/povray.bugreports/thread/%3C5d5d186c%241%40news.povray.org%3E/ Not really a bug as when the value is reduced...

Port of FS242 - Algorithm to fix the so-called shadow line artifact

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http://bugs.povray.org/task/242 See too github issue #132 ------------ Details The so-called shadow line artifact (http://wiki.povray.org/content/Knowledgebase:The_Shadow_Line_Artifact) which affects objects with a `normal` statement as well as smooth meshes and heightfields can be...

Port of FS81 - sphere_sweep generating artifacts

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http://bugs.povray.org/task/81 (See too github sphere_sweep issues #59 #285 #287) Also: FS92.zip where FS92 closed but referenced herein. ------------ Details I'm running POV-Ray for (64 bit) Windows v3.62 on (64 bit)...

Port of FS288 - Tolerance problem with refraction in blobs in CSG intersections.

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http://bugs.povray.org/task/288 Status as of January 2017: Blob accuracy has been looked at in some detail over 2016. A collection of many other problem blob scenes from years past gathered and...

Port of FS202 - Numerical oddities in Julia_Fractal

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http://bugs.povray.org/task/202 ---------------- Details I understand that some things have changed in the way certain computations in POV-Ray decide when something is "good enough" and I think this is biting me...

Port of FS246 - Regression on scale limit between 3.7 and previous releases

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http://bugs.povray.org/task/246 (Ported on the chance some change in behavior might be considered, but I think closing OK. Confirmed behavior remains unchanged as of today. All older POV-Ray source I have...

Update scene files for best practice 3.7 onward gamma handling.

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http://bugs.povray.org/task/106 (Issue originally opened way back in 2011 and looks to have never been completely implemented. I argue strongly we not use conversion macros as suggested, but rather re-write where...

Port of FS41 - improve command-line parsing error messages

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http://bugs.povray.org/task/41 --------------- Details: POV-Ray 3.6, upon encountering problems when parsing command line and/or .ini file options, would quote the offending option in the error message. POV-Ray 3.7 currently just reports...

Port of FS28 - #debug message not displayed.

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http://bugs.povray.org/task/28 --------------- Details: The #debug message stream is only being flushed when it hits a newline character, instead of after each #debug statement. This means that some final strings don't...