fix mesh scalar rendering for value 0

PeterPetrik · PeterPetrik · commit f8192880ac49 · 2019-03-20T09:35:47.000+01:00
diff --git a/src/core/mesh/qgsmeshlayerinterpolator.cpp b/src/core/mesh/qgsmeshlayerinterpolator.cpp
@@ -69,7 +69,7 @@ int QgsMeshLayerInterpolator::bandCount() const
 QgsRasterBlock *QgsMeshLayerInterpolator::block( int, const QgsRectangle &extent, int width, int height, QgsRasterBlockFeedback *feedback )
 {
   std::unique_ptr<QgsRasterBlock> outputBlock( new QgsRasterBlock( Qgis::Float64, width, height ) );
-  const double noDataValue = std::numeric_limits<double>::min();
+  const double noDataValue = std::numeric_limits<double>::quiet_NaN();
   outputBlock->setNoDataValue( noDataValue );
   outputBlock->setIsNoData();  // assume initially that all values are unset
   double *data = reinterpret_cast<double *>( outputBlock->bits() );
@@ -146,7 +146,7 @@ QgsRasterBlock *QgsMeshLayerInterpolator::block( int, const QgsRectangle &extent
 
   }
 
-  return outputBlock.release();;
+  return outputBlock.release();
 }
 
 ///@endcond

Original file line number	Diff line number	Diff line change
`@@ -69,7 +69,7 @@ int QgsMeshLayerInterpolator::bandCount() const`
`69`	`69`	`QgsRasterBlock QgsMeshLayerInterpolator::block( int, const QgsRectangle &extent, int width, int height, QgsRasterBlockFeedback feedback )`
`70`	`70`	`{`
`71`	`71`	`std::unique_ptr<QgsRasterBlock> outputBlock( new QgsRasterBlock( Qgis::Float64, width, height ) );`
`72`		`- const double noDataValue = std::numeric_limits<double>::min();`
	`72`	`+ const double noDataValue = std::numeric_limits<double>::quiet_NaN();`
`73`	`73`	`outputBlock->setNoDataValue( noDataValue );`
`74`	`74`	`outputBlock->setIsNoData(); // assume initially that all values are unset`
`75`	`75`	`double data = reinterpret_cast<double >( outputBlock->bits() );`
`@@ -146,7 +146,7 @@ QgsRasterBlock *QgsMeshLayerInterpolator::block( int, const QgsRectangle &extent`
`146`	`146`
`147`	`147`	`}`
`148`	`148`
`149`		`- return outputBlock.release();;`
	`149`	`+ return outputBlock.release();`
`150`	`150`	`}`
`151`	`151`
`152`	`152`	`///@endcond`