BUG: add test for ImageWidget dump image. bug #323

Testing/Code/Visualization/CMakeLists.txt

@@ -40,6 +40,29 @@ ${INPUTDATA}/poupees.png 1
 )
 ENDIF(OTB_GL_USE_ACCEL)
 
+
+ADD_TEST(vrTvImageWidgetImageDumpWithoutGlAcceleration ${VISUALIZATION_TESTS1}
+--compare-image ${NOTOL}
+${BASELINE}/vrTvImageWidgetImageDumpWithoutGlAcceleration.png
+${TEMP}/vrTvImageWidgetImageDumpWithoutGlAcceleration.png
+otbImageWidgetImageDump
+${INPUTDATA}/qb_RoadExtract2sub200x200.tif # input image
+0 # use glAcceleration
+2 # resize factor
+${TEMP}/vrTvImageWidgetImageDumpWithoutGlAcceleration.png
+)
+
+IF(OTB_GL_USE_ACCEL)
+ADD_TEST(vrTvImageWidgetImageDumpWithGlAcceleration ${VISUALIZATION_TESTS1}
+${BASELINE}/vrTvImageWidgetImageDumpWithGlAcceleration.png
+${TEMP}/vrTvImageWidgetImageDumpWithGlAcceleration.png
+otbImageWidgetImageDump
+${INPUTDATA}/qb_RoadExtract2sub200x200.tif 
+1
+${TEMP}/vrTvImageWidgetImageDumpWithGlAcceleration.png
+)
+ENDIF(OTB_GL_USE_ACCEL)
+
 #------------ otb::ImageWidgetActionHandler -------------
 
 ADD_TEST(vrTuImageWidgetActionHandlerNew ${VISUALIZATION_TESTS1}
@@ -445,6 +468,7 @@ SET(Visualization_SRCS1
 otbVisualizationTests1.cxx
 otbImageWidgetNew.cxx
 otbImageWidget.cxx
+otbImageWidgetImageDump.cxx
 otbImageWidgetActionHandlerNew.cxx
 otbImageWidgetControllerNew.cxx
 otbImageWidgetController.cxx

Testing/Code/Visualization/otbImageWidgetImageDump.cxx

+/*=========================================================================
+
+  Program:   ORFEO Toolbox
+  Language:  C++
+  Date:      $Date$
+  Version:   $Revision$
+
+
+  Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
+  See OTBCopyright.txt for details.
+
+
+     This software is distributed WITHOUT ANY WARRANTY; without even
+     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
+     PURPOSE.  See the above copyright notices for more information.
+
+=========================================================================*/
+#define OTB_DISABLE_GL_USE_ACCEL
+#include "otbImageWidget.h"
+#include "otbImageFileReader.h"
+#include <FL/Fl.H>
+
+#include "otbScalarBufferToImageFileWriter.h"
+
+int otbImageWidgetImageDump(int argc, char * argv[])
+{
+  const char * infname    =      argv[1];
+  const bool   useAccel   = atoi(argv[2]);
+  unsigned int sizeFactor = atoi(argv[3]);
+  const char * filename   = argv[4];
+
+
+  // typedefs
+  typedef otb::ImageWidget<>                                               WidgetType;
+  typedef WidgetType::InputImageType                                       ImageType;
+  typedef otb::ImageFileReader<ImageType>                                  ReaderType;
+  typedef otb::ScalarBufferToImageFileWriter<unsigned char, unsigned char> DumperType;
+
+  // Reading the input image
+  ReaderType::Pointer reader = ReaderType::New();
+  reader->SetFileName(infname);
+  reader->Update();
+  ImageType::RegionType region = reader->GetOutput()->GetLargestPossibleRegion();
+  ImageType::RegionType::SizeType size = region.GetSize();
+  
+  size[0] /= sizeFactor;
+  size[1] /= sizeFactor;
+  region.SetSize(size);
+  
+  // Create a widget
+  WidgetType::Pointer widget = WidgetType::New();
+  // Set the acceleration mode
+  widget->SetUseGlAcceleration(useAccel);
+
+  // Resize it
+  widget->resize(0, 0, region.GetSize()[0], region.GetSize()[1]);
+  // Show it
+  widget->show();
+  // Refresh display
+  Fl::check();
+
+  // Read the OpenGl buffer
+  widget->ReadBuffer(reader->GetOutput(), region);
+  // Redraw it
+  widget->redraw();
+  // Refresh display
+  Fl::check();
+
+ // Dump image
+  DumperType::Pointer dumper = DumperType::New();
+ 
+  dumper->SetNumberOfChannels(3);
+  dumper->SetBuffer( widget->GetOpenGlBuffer() );
+  dumper->SetImageSize(widget->GetOpenGlBufferedRegion().GetSize());
+  dumper->SetFileName(filename);
+  dumper->SetInverseXSpacing(true);
+  dumper->Update();
+  
+  return EXIT_SUCCESS;
+}

Testing/Code/Visualization/otbVisualizationTests1.cxx

@@ -26,6 +26,7 @@ void RegisterTests()
 {
   REGISTER_TEST(otbImageWidgetNew);
   REGISTER_TEST(otbImageWidget);
+  REGISTER_TEST(otbImageWidgetImageDump);
   REGISTER_TEST(otbImageWidgetActionHandlerNew);
   REGISTER_TEST(otbImageWidgetControllerNew);
   REGISTER_TEST(otbImageWidgetController);