ENH: Handling path drawing

Code/Visu/otbImageViewerBase.h

@@ -27,6 +27,7 @@ PURPOSE.  See the above copyright notices for more information.
 #include "otbStreamingShrinkImageFilter.h"
 #include "otbImageWidgetBoxForm.h"
 #include "otbImageWidgetPolygonForm.h"
+#include "otbImageWidgetPolylineForm.h"
 #include "otbImageWidgetCircleForm.h"
 #include "itkListSample.h"
 #include "otbObjectList.h"
@@ -165,6 +166,14 @@ namespace otb
       typedef typename ImageWidgetCircleFormType::Pointer ImageWidgetCircleFormPointerType;
       typedef std::map<LabelType,ColorType> ROIColorMapType;
 
+      typedef otb::PolyLineParametricPathWithValue<double,2> PathType;
+      typedef typename PathType::VertexListIteratorType PathIteratorType;
+      typedef otb::ObjectList<PathType> PathListType;
+      typedef typename PathListType::Pointer PathListPointerType;
+      typedef typename PathListType::Iterator PathListIteratorType;
+      typedef ImageWidgetPolylineForm<double> ImageWidgetPolylineFormType;
+      typedef typename ImageWidgetPolylineFormType::Pointer ImageWidgetPolylineFormPointerType;
+          
       /// Accessors
       itkGetMacro(Built,bool);
       itkGetMacro(ShrinkFactor,unsigned int);
@@ -184,6 +193,8 @@ namespace otb
       itkGetMacro(UseScroll,bool);
       itkGetObjectMacro(PolygonROIList, PolygonListType);
       itkSetObjectMacro(PolygonROIList, PolygonListType);
+      itkGetObjectMacro(PathList, PathListType);
+      itkSetObjectMacro(PathList, PathListType);
       itkGetObjectMacro(InterfaceBoxesList,FormListType);
       itkSetObjectMacro(InterfaceBoxesList,FormListType);
       itkSetMacro(InterfaceBoxesColor,ColorType);
@@ -473,6 +484,8 @@ namespace otb
       OffsetListType m_LinkedViewerOffsetList;
       /// PolygonList
       PolygonListPointerType m_PolygonROIList;
+      /// PathList
+      PathListPointerType m_PathList;
       /// Interface boxes
       FormListPointerType m_InterfaceBoxesList;
       /// Next ROI color 

Code/Visu/otbImageViewerBase.txx

@@ -60,6 +60,7 @@ namespace otb
     m_LinkedViewerList = ViewerListType::New();
     m_Updating = false;
     m_PolygonROIList = PolygonListType::New(); 
+    m_PathList = PathListType::New();
     m_InterfaceBoxesList = FormListType::New();
     m_ShowFullWidget = true;
     m_ShowScrollWidget = true;
@@ -565,6 +566,19 @@ namespace otb
               new_list->PushBack(new_poly);
         }
         
+        for(PathListIteratorType it2 = m_PathList->Begin();
+            it2!=m_PathList->End();++it2)
+        {
+          ImageWidgetPolylineFormPointerType new_line = ImageWidgetPolylineFormType::New();
+          new_line->SetPolyline(it2.Get());
+//           new_line->SetInternalValueToAlphaChannel(true);
+
+          new_line->SetColor(m_DefaultROIColor);
+
+          new_list->PushBack(new_line);
+        }
+        
+        
         if(m_UseScroll)
         {
             m_ScrollWidget->SetFormListOverlay(new_list);