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Re-enable geometry simplification while rendering

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This commit is contained in:
Martin Dobias 2014-02-18 12:10:24 +07:00
parent a3af93394e
commit bc07486982
3 changed files with 12 additions and 10 deletions
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3
src/core/qgsvectorlayerfeatureiterator.cpp
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@ -62,9 +62,6 @@ QgsVectorLayerFeatureSource::QgsVectorLayerFeatureSource(QgsVectorLayer *layer)
mChangedAttributeValues = QgsChangedAttributesMap( layer->editBuffer()->changedAttributeValues() );
mAddedAttributes = QList<QgsField>( layer->editBuffer()->addedAttributes() );
mDeletedAttributeIds = QgsAttributeList( layer->editBuffer()->deletedAttributeIds() );
// TODO[MD]: after merge
//mChangedFeaturesRequest.setFilterFids( L->editBuffer()->changedAttributeValues().keys().toSet() );
//}
}
}

15
src/core/qgsvectorlayerrenderer.cpp
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@ -42,6 +42,9 @@ QgsVectorLayerRenderer::QgsVectorLayerRenderer( QgsVectorLayer* layer, QgsRender
mLayerTransparency = layer->layerTransparency();
mFeatureBlendMode = layer->featureBlendMode();
mSimplifyMethod = layer->simplifyMethod();
mSimplifyGeometry = layer->simplifyDrawingCanbeApplied( mContext, QgsVectorLayer::GeometrySimplification );
QSettings settings;
mVertexMarkerOnlyForSelection = settings.value( "/qgis/digitizing/marker_only_for_selected", false ).toBool();
@ -114,21 +117,20 @@ bool QgsVectorLayerRenderer::render()
.setSubsetOfAttributes( mAttrNames, mFields );
// enable the simplification of the geometries (Using the current map2pixel context) before send it to renderer engine.
#if 0 //TODO[MD]: after merge
if ( simplifyDrawingCanbeApplied( mContext, QgsVectorLayer::GeometrySimplification ) )
if ( mSimplifyGeometry )
{
QPainter* p = rendererContext.painter();
QPainter* p = mContext.painter();
double dpi = ( p->device()->logicalDpiX() + p->device()->logicalDpiY() ) / 2;
double map2pixelTol = mSimplifyMethod.threshold() * 96.0f / dpi;
const QgsMapToPixel& mtp = rendererContext.mapToPixel();
const QgsMapToPixel& mtp = mContext.mapToPixel();
map2pixelTol *= mtp.mapUnitsPerPixel();
const QgsCoordinateTransform* ct = rendererContext.coordinateTransform();
const QgsCoordinateTransform* ct = mContext.coordinateTransform();
// resize the tolerance using the change of size of an 1-BBOX from the source CoordinateSystem to the target CoordinateSystem
if ( ct && !(( QgsCoordinateTransform* )ct )->isShortCircuited() )
{
QgsPoint center = rendererContext.extent().center();
QgsPoint center = mContext.extent().center();
double rectSize = ct->sourceCrs().geographicFlag() ? 0.0008983 /* ~100/(40075014/360=111319.4833) */ : 100;
QgsRectangle sourceRect = QgsRectangle( center.x(), center.y(), center.x() + rectSize, center.y() + rectSize );
@ -153,7 +155,6 @@ bool QgsVectorLayerRenderer::render()
featureRequest.setSimplifyMethod( simplifyMethod );
}
#endif
QgsFeatureIterator fit = mSource->getFeatures( featureRequest );

4
src/core/qgsvectorlayerrenderer.h
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@ -22,6 +22,7 @@ typedef QList<int> QgsAttributeList;
#include "qgsfield.h" // QgsFields
#include "qgsfeature.h" // QgsFeatureIds
#include "qgsfeatureiterator.h"
#include "qgsvectorsimplifymethod.h"
#include "qgsmaplayerrenderer.h"
@ -86,6 +87,9 @@ protected:
int mLayerTransparency;
QPainter::CompositionMode mFeatureBlendMode;
QgsVectorSimplifyMethod mSimplifyMethod;
bool mSimplifyGeometry;
};