diff options
| author | Fridrich Štrba <fridrich.strba@bluewin.ch> | 2011-06-22 09:36:20 +0200 |
|---|---|---|
| committer | Fridrich Štrba <fridrich.strba@bluewin.ch> | 2011-06-22 12:54:25 +0200 |
| commit | bfc8f933669f486931da4808211154ff6d6965c0 (patch) | |
| tree | ba7ddd6000964e29b41dc60ecbe61ecc2fbfcfed /basegfx/source/polygon | |
| parent | 39770935e4bb889fa987d51af91509932c2fac1d (diff) | |
Use the sweep flag to determine the drawing direction
The previous solution was giving somehow acceptable results
in the majority of cases, but was pretty broken
with corner cases where the arc is exactly half of the whole ellipse and where
the large arc flag is largely irrelevant.
If the sweep flag is equal to 0 drawing goes in the sense of decreasing angles.
If it is set, drawing goes in the sense of increasing angles.
Diffstat (limited to 'basegfx/source/polygon')
| -rw-r--r-- | basegfx/source/polygon/b2dsvgpolypolygon.cxx | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/basegfx/source/polygon/b2dsvgpolypolygon.cxx b/basegfx/source/polygon/b2dsvgpolypolygon.cxx index 50a04dbaa075..074cfd9e25d5 100644 --- a/basegfx/source/polygon/b2dsvgpolypolygon.cxx +++ b/basegfx/source/polygon/b2dsvgpolypolygon.cxx @@ -787,10 +787,7 @@ namespace basegfx // (since // createPolygonFromEllipseSegment() // normalizes to e.g. cw arc) - const bool bLessThanPi(fmod(fTheta2+2*M_PI-fTheta1, - 2*M_PI)<M_PI); - const bool bFlipSegment( (bLargeArcFlag!=0) == bLessThanPi ); - if( bFlipSegment ) + if( !bSweepFlag ) std::swap(fTheta1,fTheta2); // finally, create bezier polygon from this @@ -812,7 +809,7 @@ namespace basegfx // always creates arcs that are // positively oriented - flip polygon // if we swapped angles above - if( bFlipSegment ) + if( !bSweepFlag ) aSegment.flip(); aCurrPoly.append(aSegment); } |