ENH: setting the output size

mapnikOTBClasses.cxx

@@ -33,6 +33,10 @@ int main(int argc, char * argv[])
   typedef otb::VectorDataToImageFilter<VectorDataType, ImageType> VectorDataToImageFilterType;
   VectorDataToImageFilterType::Pointer vectorDataRendering = VectorDataToImageFilterType::New();
   vectorDataRendering->SetInput(projection->GetOutput());
+  ImageType::SizeType size;
+  size[0]=100;
+  size[1]=100;
+  vectorDataRendering->SetSize(size);
 
 
   //Save the image in a file

otbVectorDataToImageFilter.h

@@ -69,6 +69,12 @@ template <class TVectorData, class TImage>
     virtual void SetInput( const VectorDataType *input);
     const VectorDataType * GetInput(void);
 
+    /** Set the size of the output image. */
+    itkSetMacro( Size, SizeType );
+
+    /** Get the size of the output image. */
+    itkGetConstReferenceMacro( Size, SizeType );
+
       /** Set the origin of the vector data.
        * \sa GetOrigin() */
     itkSetMacro(Origin, OriginType);

otbVectorDataToImageFilter.txx

@@ -32,6 +32,11 @@ namespace otb
   ::VectorDataToImageFilter()
   {
     this->SetNumberOfRequiredInputs( 1 );
+    m_Spacing.Fill(1.0);
+    m_Origin.Fill(0.0);
+    m_Direction.SetIdentity();
+    m_Size.Fill( 0 );
+    m_StartIndex.Fill( 0 );
   }
 
 
@@ -130,27 +135,30 @@ namespace otb
           VectorDataToImageFilter<TVectorData, TImage>
   ::GenerateOutputInformation()
   {
-  // call the superclass' implementation of this method
-    Superclass::GenerateOutputInformation();
 
-  // get pointers to the input and output
+    // we can't call the superclass method here.
+
+    // get pointers to the input and output
     ImagePointer outputPtr = this->GetOutput();
     if ( !outputPtr )
     {
       return;
     }
 
-  // Set the size of the output region
+    // Set the size of the output region
     typename TImage::RegionType outputLargestPossibleRegion;
     outputLargestPossibleRegion.SetSize( m_Size );
     outputLargestPossibleRegion.SetIndex( m_StartIndex );
     outputPtr->SetLargestPossibleRegion( outputLargestPossibleRegion );
 
-  // Set spacing and origin
+    // Set spacing and origin
     outputPtr->SetSpacing( m_Spacing );
     outputPtr->SetOrigin( m_Origin );
     outputPtr->SetDirection( m_Direction );
 
+
+    //TODO update or check the projection information
+
     return;
   }