diff options
| author | Gunnar Sletta <gunnar@trolltech.com> | 2009-10-26 07:36:38 (GMT) |
|---|---|---|
| committer | Gunnar Sletta <gunnar@trolltech.com> | 2009-10-26 08:59:52 (GMT) |
| commit | 6c83dadea241f2e52d0cbcfa5c81e43c7eaeb90f (patch) | |
| tree | 49085e7e186175740509a57b4f0825322f2433ca /src/opengl/gl2paintengineex/qtriangulatingstroker_p.h | |
| parent | 9a1ee410d24321e7eedaea6bb4f1b21fcc6fb427 (diff) | |
| download | Qt-6c83dadea241f2e52d0cbcfa5c81e43c7eaeb90f.zip Qt-6c83dadea241f2e52d0cbcfa5c81e43c7eaeb90f.tar.gz Qt-6c83dadea241f2e52d0cbcfa5c81e43c7eaeb90f.tar.bz2 | |
Kill a tiny few sin/cos/sqrt calls in the new stroker
Reviewed-by: Eskil
Diffstat (limited to 'src/opengl/gl2paintengineex/qtriangulatingstroker_p.h')
| -rw-r--r-- | src/opengl/gl2paintengineex/qtriangulatingstroker_p.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h b/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h index b7354db..ae56e87 100644 --- a/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h +++ b/src/opengl/gl2paintengineex/qtriangulatingstroker_p.h @@ -124,7 +124,16 @@ inline void QTriangulatingStroker::normalVector(float x1, float y1, float x2, fl { float dx = x2 - x1; float dy = y2 - y1; - float pw = m_width / sqrt(dx*dx + dy*dy); + + float pw; + + if (dx == 0) + pw = m_width / dy; + else if (dy == 0) + pw = m_width / dx; + else + pw = m_width / sqrt(dx*dx + dy*dy); + *nx = -dy * pw; *ny = dx * pw; } |