[LIBART] ART_USE_NEW_INTERSECTOR

[Robin Becker <robin jessikat fsnet co uk>]

Is the new intersector ready for prime time. I have an example where
I seem to see a strange bleed from a simple path when
this is defined and which seems OK when not.

I'm using this kind of code 

preTransSvp = art_svp_vpath_stroke(vpath, join, cap, line_width, miter_limit, flatness);
backVpath = art_vpath_from_svp(preTransSvp);
transVpath = art_vpath_affine_transform(backVpath, affine);
resultSvp = art_svp_from_vpath(transVpath);

and the final rendering is done with

art_rgb_svp_alpha

vpath:
  0: MOVETO  , (70,10)
  1: LINETO  , (70,30)
  2: LINETO  , (90,30)
  3: LINETO  , (90,10)
  4: END     , (0,0)
affine=0.70710678118654757 0.70710678118654746 -0.70710678118654746 0.70710678118654757 0 0 (det: 1)
flatness=0.5 miter_limit=4

In the old working case
resultSvp looks like
seg  0: n_points=3 dir=1
        box=27.576369205827334 56.214025995848068 42.425536512884229 85.55992341527147
        (42.073262202863916 56.214025995848068)
        (27.576369205827334 70.710062704634979)
        (42.425536512884229 85.55992341527147)
seg  1: n_points=3 dir=0
        box=28.990409525204747 56.214025995848068 42.780238814425417 70.710724860599015
        (42.073262202863916 56.214025995848068)
        (42.780238814425417 56.922412720801397)
        (28.990409525204747 70.710724860599015)
seg  2: n_points=2 dir=1
        box=42.426514684098485 70.357472983600118 56.21421740907325 84.146512277854939
        (56.21421740907325 70.357472983600118)
        (42.426514684098485 84.146512277854939)
seg  3: n_points=3 dir=0
        box=42.425536512884229 70.357472983600118 56.922244570649148 85.55992341527147
        (56.21421740907325 70.357472983600118)
        (56.922244570649148 71.064323266748971)
        (42.425536512884229 85.55992341527147)
seg  4: n_points=2 dir=0
        box=28.990409525204747 70.710724860599015 42.426514684098485 84.146512277854939
        (28.990409525204747 70.710724860599015)
        (42.426514684098485 84.146512277854939)

In the ART_USE_NEW_INTERSECTOR defined (non working case) I see
seg  0: n_points=3 dir=1
        box=27.577164466275363 56.214989104330527 42.42640687119286 85.559920523572245
        (42.072853480599584 56.214989104330527)
        (27.577164466275363 70.710678118654755)
        (42.42640687119286 85.559920523572245)
seg  1: n_points=2 dir=0 box=42.072853480599584 56.214989104330527 42.77996026178613 56.922095885517074
        (42.072853480599584 56.214989104330527)
        (42.77996026178613 56.922095885517074)
seg  2: n_points=3 dir=0
        box=28.991378028648455 56.922095885517074 42.77996026178613 70.710678118654755
        (42.77996026178613 56.922095885517074)
        (28.991378028648455 70.710678118654755)
        (28.991378028648455 70.710678118654755)
seg  3: n_points=2 dir=1
        box=42.42640687119286 70.357124728061478 56.214989104330535 84.145706961199153
        (56.214989104330535 70.357124728061478)
        (42.42640687119286 84.145706961199153)
seg  4: n_points=3 dir=0
        box=42.42640687119286 70.357124728061478 56.922095885517081 85.559920523572245
        (56.214989104330535 70.357124728061478)
        (56.922095885517081 71.064231509248017) (42.42640687119286 85.559920523572245)
seg  5: n_points=2 dir=0
        box=42.42640687119286 84.145706961199153 42.42640687119286 84.145706961199153
        (42.42640687119286 84.145706961199153)
        (42.42640687119286 84.145706961199153


-- 
Robin Becker