Talk:Ray-casting algorithm

Fortran: The point of pts?

What is pts used for in the Fortran example? --Paddy3118 01:17, 26 May 2009 (UTC)

Ah, It seems there are one set of points for all polygons. --Paddy3118 01:41, 26 May 2009 (UTC)

Yes, I preferred to use a single set, and to index it (it's not an odd technics if a subset of points is shared among several polygons we want to define). --ShinTakezou 16:53, 26 May 2009 (UTC)

AutoHotkey version

The AutoHotkey solution refers to ray_intersects_segment without defining it, but it seems to me that defining ray_intersects_segment is a key part of this task. --Mr2001 07:31, 31 October 2010 (UTC)

Help:ENA Templates will be helpful for flagging this kind of thing. --Michael Mol 13:23, 31 October 2010 (UTC)

"Coherent results"

The C example claims to "reveal the meaning of coherent results", whereby it considers a point lying on the left edge of a square outside, but a point on right side inside. This must be a meaning of "coherent" that I wasn't aware of. Also, the intersection code is terrible: it uses an arbitrarily defined value as a floating point precision limit while not rigorously enforcing it, which will cause all kinds of unexpected behaviors when used in real work. --Ledrug 22:10, 25 July 2011 (UTC)