Subject:
[Fwd: Re: [nanogui] GrFillPoly doesn't work on concave polygon]
From:
Jordan Crouse ####@####.####
Date:
1 Mar 2002 15:47:24 -0000
Message-Id: <1014997153.11841.28.camel@cosmic>
This is true.
The previous release had an algorithm that was causing many issues, so
in the interest of stability we pulled it out before 0.89-pre-8. If
anyone is interested these sort of algorithms, then the polygon fill
code definitely needs some tender loving care.
Jordan
On Fri, 2002-03-01 at 08:37, Patrice Mancini wrote:
>
> If I try to fill a concave polygone, nothing is drawn...
>
>
>
> GR_POINT pt1[5] = {{10,20},{150,30},{120,120},{60,60},{15,100}};
> GR_POINT pt2[5] = {{10,20},{150,30},{120,120},{60,160},{15,100}};
>
>
> GrPoly(w1,gc1,5,pt1); // OK
> GrFillPoly(w1,gc1,5,pt1); // Fail to draw
>
> GrPoly(w1,gc1,5,pt2); // OK
> GrFillPoly(w1,gc1,5,pt2); // OK
>
> I have this problem with the last release (0.89-pre-8) seems OK with previous release.
>
> Patrice
