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#9686: fix simplification of no-closed polygons

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ahuarte47 2014-03-02 14:53:48 +01:00 committed by Matthias Kuhn
parent fc6cd5428a
commit 60e1a9b721
1 changed files with 18 additions and 0 deletions
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18
src/core/qgsmaptopixelgeometrysimplifier.cpp
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@ -207,6 +207,24 @@ bool QgsMapToPixelSimplifier::simplifyWkbGeometry( int simplifyFlags, QGis::WkbT
double* ptr = ( double* )targetWkb; double* ptr = ( double* )targetWkb;
map2pixelTol *= map2pixelTol; //-> Use mappixelTol for 'LengthSquare' calculations. map2pixelTol *= map2pixelTol; //-> Use mappixelTol for 'LengthSquare' calculations.
// Check whether the LinearRing is really closed.
if ( isaLinearRing )
{
double x1, y1, x2, y2;
unsigned char* startWkbX = sourceWkb;
unsigned char* startWkbY = startWkbX + sizeOfDoubleX;
unsigned char* finalWkbX = sourceWkb + ( numPoints - 1 ) * ( sizeOfDoubleX + sizeOfDoubleY );
unsigned char* finalWkbY = finalWkbX + sizeOfDoubleX;
memcpy( &x1, startWkbX, sizeof( double ) );
memcpy( &y1, startWkbY, sizeof( double ) );
memcpy( &x2, finalWkbX, sizeof( double ) );
memcpy( &y2, finalWkbY, sizeof( double ) );
isaLinearRing = ( x1 == x2 ) && ( y1 == y2 );
}
// Process each vertex... // Process each vertex...
for ( int i = 0, numPoints_i = ( isaLinearRing ? numPoints - 1 : numPoints ); i < numPoints_i; ++i ) for ( int i = 0, numPoints_i = ( isaLinearRing ? numPoints - 1 : numPoints ); i < numPoints_i; ++i )
{ {