raster projector fixes

Author: blazek

src/core/qgsrasterprojector.cpp

@@ -15,6 +15,7 @@
  *                                                                         *
  ***************************************************************************/
 
+#include "qgsrasterdataprovider.h"
 #include "qgslogger.h"
 #include "qgsrasterprojector.h"
 #include "qgscoordinatetransform.h"
@@ -59,35 +60,46 @@ QgsRasterProjector::QgsRasterProjector(
 }
 
 QgsRasterProjector::QgsRasterProjector()
-    : QgsRasterInterface( 0)
+    : QgsRasterInterface( 0 )
     , pHelperTop( 0 ), pHelperBottom( 0 )
 {
   QgsDebugMsg( "Entered" );
 }
 
 QgsRasterProjector::~QgsRasterProjector()
 {
-  delete pHelperTop;
-  delete pHelperBottom;
+  delete[] pHelperTop;
+  delete[] pHelperBottom;
 }
 
 void QgsRasterProjector::setCRS( QgsCoordinateReferenceSystem theSrcCRS, QgsCoordinateReferenceSystem theDestCRS )
 {
   mSrcCRS = theSrcCRS;
   mDestCRS = theDestCRS;
-  mCoordinateTransform.setSourceCrs( theSrcCRS );
-  mCoordinateTransform.setDestCRS( theDestCRS );
+  mCoordinateTransform.setSourceCrs( theDestCRS );
+  mCoordinateTransform.setDestCRS( theSrcCRS );
 }
 
 void QgsRasterProjector::calc()
 {
   QgsDebugMsg( "Entered" );
   mCPMatrix.clear();
-  delete pHelperTop;
+  delete[] pHelperTop;
   pHelperTop = 0;
-  delete pHelperBottom;
+  delete[] pHelperBottom;
   pHelperBottom = 0;
 
+  // Get max source resolution if possible
+  if ( mInput )
+  {
+    QgsRasterDataProvider *provider = dynamic_cast<QgsRasterDataProvider*>( mInput->srcInput() );
+    if ( provider && ( provider->capabilities() & QgsRasterDataProvider::ExactResolution ) )
+    {
+      mMaxSrcXRes = provider->extent().width() / provider->xSize();
+      mMaxSrcYRes = provider->extent().height() / provider->ySize();
+    }
+  }
+
   mDestXRes = mDestExtent.width() / ( mDestCols );
   mDestYRes = mDestExtent.height() / ( mDestRows );
 
@@ -139,13 +151,13 @@ void QgsRasterProjector::calc()
       mApproximate = false;
       break;
     }
-
   }
   QgsDebugMsg( QString( "CPMatrix size: mCPRows = %1 mCPCols = %2" ).arg( mCPRows ).arg( mCPCols ) );
   mDestRowsPerMatrixRow = ( float )mDestRows / ( mCPRows - 1 );
   mDestColsPerMatrixCol = ( float )mDestCols / ( mCPCols - 1 );
 
-  //QgsDebugMsg( "CPMatrix:\n" + cpToString() );
+  QgsDebugMsgLevel( "CPMatrix:", 5 );
+  QgsDebugMsgLevel( cpToString(), 5 );
 
   // Calculate source dimensions
   calcSrcExtent();
@@ -568,7 +580,8 @@ bool QgsRasterProjector::checkRows()
 
 void * QgsRasterProjector::readBlock( int bandNo, QgsRectangle  const & extent, int width, int height )
 {
-  QgsDebugMsg( "Entered" );
+  QgsDebugMsg( QString( "extent:\n%1" ).arg( extent.toString() ) );
+  QgsDebugMsg( QString( "width = %1 height = %1" ).arg( width ).arg( height ) );
   if ( !mInput ) return 0;
 
   if ( ! mSrcCRS.isValid() || ! mDestCRS.isValid() || mSrcCRS == mDestCRS )

src/core/qgsrasterprojector.h

@@ -130,9 +130,6 @@ class CORE_EXPORT QgsRasterProjector : public QgsRasterInterface
     /** get source extent */
     QgsRectangle srcExtent() { return mSrcExtent; }
 
-    /** set source extent */
-    void  setSrcExtent( const QgsRectangle theExtent ) { mSrcExtent = theExtent; }
-
     /** get/set source width/height */
     int srcRows() { return mSrcRows; }
     int srcCols() { return mSrcCols; }
@@ -154,7 +151,7 @@ class CORE_EXPORT QgsRasterProjector : public QgsRasterInterface
     /** Destination CRS */
     QgsCoordinateReferenceSystem mDestCRS;
 
-    /** Coordinate transform */
+    /** Reverse coordinate transform (from destination to source) */
     QgsCoordinateTransform mCoordinateTransform;
 
     /** Destination extent */

src/core/raster/qgsrasterlayer.cpp

@@ -829,30 +829,6 @@ void QgsRasterLayer::draw( QPainter * theQPainter,
   // procedure to use :
   //
 
-  double maxSrcXRes = 0;
-  double maxSrcYRes = 0;
-
-  if ( mDataProvider->capabilities() & QgsRasterDataProvider::ExactResolution )
-  {
-    maxSrcXRes = mDataProvider->extent().width() / mDataProvider->xSize();
-    maxSrcYRes = mDataProvider->extent().height() / mDataProvider->ySize();
-  }
-  /*
-    if ( mRenderer )
-    {
-      //QgsRasterDrawer drawer( mRenderer );
-      //QgsRasterDrawer drawer( mResampleFilter );
-
-
-      QgsRasterProjector projector( theRasterViewPort->mSrcCRS, theRasterViewPort->mDestCRS, maxSrcXRes, maxSrcYRes, mDataProvider->extent() );
-
-      projector.setInput( mResampleFilter );
-
-      QgsRasterDrawer drawer( &projector );
-      drawer.draw( theQPainter, theRasterViewPort, theQgsMapToPixel );
-    }
-  */
-
   QgsRasterProjector *projector = mPipe.projector();
   // TODO: add in init?
   if ( !projector )
@@ -866,8 +842,6 @@ void QgsRasterLayer::draw( QPainter * theQPainter,
   if ( projector )
   {
     projector->setCRS( theRasterViewPort->mSrcCRS, theRasterViewPort->mDestCRS );
-    projector->setMaxSrcRes( maxSrcXRes, maxSrcYRes );
-    projector->setSrcExtent( mDataProvider->extent() );
   }
 
   // Drawer to pipe?

src/core/raster/qgsrasterresamplefilter.cpp

@@ -68,7 +68,7 @@ void * QgsRasterResampleFilter::readBlock( int bandNo, QgsRectangle  const & ext
   {
     QgsRasterDataProvider *provider = dynamic_cast<QgsRasterDataProvider*>( mInput->srcInput() );
     // Do not oversample if data source does not have fixed resolution (WMS)
-    if ( provider && ( provider->capabilities() & QgsRasterDataProvider::Size ) )
+    if ( provider && ( provider->capabilities() & QgsRasterDataProvider::ExactResolution ) )
     {
       double xRes = extent.width() / width;
       double providerXRes = provider->extent().width() / provider->xSize();
@@ -92,7 +92,6 @@ void * QgsRasterResampleFilter::readBlock( int bandNo, QgsRectangle  const & ext
 
   // TODO: we must also increase the extent to get correct result on borders of parts
 
-
   int resWidth = width * oversamplingX;
   int resHeight = height * oversamplingY;