The code was born in 2009 by Paul Ramsey.
https://github.com/postgis/postgis/commit/6adec1b2be11e7d0fe5c482e50ce0872c400cfd6#diff-5705dd09236e9a6e8fa456b7b9599ed7R205-R211
Either a comment is needed on this, or a patch. Easiest way to check a
hypothesis that this may be a bug is to change L526 (g
Hello Darafei,
It looks to me the first_cross should be SEG_CROSS_RIGHT, not
SEG_CROSS_LEFT here.
If it is expected, L574 shall never become true. Right?
| at L526:
| if ( this_cross == SEG_CROSS_RIGHT )
| {
| LWDEBUG(4,"this_cross == SEG_CROSS_RIGHT");
| cross_right++;
| if ( ! first
Hi,
the link you have is setting variable this_cross, and L526 sets
first_cross from it if it was not set and there is LEFT or RIGHT cross
(not no-cross and not COLLINEAR). Looks expected to me.
On Sat, Apr 18, 2020 at 6:32 PM Kohei KaiGai wrote:
>
> Hello,
>
> I noticed a strange code at liblwg
