[QGIS Commit] r15076 - trunk/qgis/src/core/symbology-ng
svn_qgis at osgeo.org
svn_qgis at osgeo.org
Tue Jan 25 03:23:52 EST 2011
Author: jef
Date: 2011-01-25 00:23:52 -0800 (Tue, 25 Jan 2011)
New Revision: 15076
Modified:
trunk/qgis/src/core/symbology-ng/qgslinesymbollayerv2.cpp
Log:
fix #3434
Modified: trunk/qgis/src/core/symbology-ng/qgslinesymbollayerv2.cpp
===================================================================
--- trunk/qgis/src/core/symbology-ng/qgslinesymbollayerv2.cpp 2011-01-25 07:43:44 UTC (rev 15075)
+++ trunk/qgis/src/core/symbology-ng/qgslinesymbollayerv2.cpp 2011-01-25 08:23:52 UTC (rev 15076)
@@ -622,19 +622,6 @@
{
}
-static double _calculateAngle( double x1, double y1, double x2, double y2 )
-{
- // return angle (in radians) between two points
- if ( x1 == x2 )
- return M_PI *( y2 >= y1 ? 1 / 2 : 3 / 2 ); // angle is 90 or 270
-
- double t = ( y2 - y1 ) / ( x2 - x1 );
- if ( t >= 0 )
- return atan( t ) + ( y2 >= y1 ? 0 : M_PI );
- else // t < 0
- return atan( t ) + ( y2 >= y1 ? M_PI : 0 ); // atan is positive / negative
-}
-
void QgsLineDecorationSymbolLayerV2::renderPolyline( const QPolygonF& points, QgsSymbolV2RenderContext& context )
{
// draw arrow at the end of line
@@ -648,8 +635,8 @@
int cnt = points.count();
QPointF p1 = points.at( cnt - 2 );
QPointF p2 = points.at( cnt - 1 );
- double angle = _calculateAngle( p1.x(), p1.y(), p2.x(), p2.y() );
+ double angle = atan2( p2.y() - p1.y(), p2.x() - p1.x() );
double size = context.outputLineWidth( mWidth * 8 );
double angle1 = angle + M_PI / 6;
double angle2 = angle - M_PI / 6;
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