CUDA: Add reset methods for data holder classes (#4885)

Author: oitel

source/MRCuda/MRCudaPolyline.cpp

@@ -29,6 +29,13 @@ Polyline2Data Polyline2DataHolder::data() const
     };
 }
 
+void Polyline2DataHolder::reset()
+{
+    nodes_.resize( 0 );
+    points_.resize( 0 );
+    orgs_.resize( 0 );
+}
+
 size_t Polyline2DataHolder::heapBytes( const Polyline2& polyline )
 {
     return sizeof( Node2 )  * polyline.getAABBTree().nodes().size()
@@ -58,6 +65,13 @@ Polyline3Data Polyline3DataHolder::data() const
     };
 }
 
+void Polyline3DataHolder::reset()
+{
+    nodes_.resize( 0 );
+    points_.resize( 0 );
+    orgs_.resize( 0 );
+}
+
 size_t Polyline3DataHolder::heapBytes( const Polyline3& polyline )
 {
     return sizeof( Node3 )  * polyline.getAABBTree().nodes().size()

source/MRCuda/MRCudaPolyline.h

@@ -24,6 +24,9 @@ class Polyline2DataHolder
     MRCUDA_API Polyline2Data data() const;
     operator Polyline2Data () const { return data(); }
 
+    /// Resets data buffers.
+    MRCUDA_API void reset();
+
     /// Computes the GPU memory amount required to allocate data for the polyline.
     MRCUDA_API static size_t heapBytes( const Polyline2& polyline );
 
@@ -45,6 +48,9 @@ class Polyline3DataHolder
     MRCUDA_API Polyline3Data data() const;
     operator Polyline3Data () const { return data(); }
 
+    /// Resets data buffers.
+    MRCUDA_API void reset();
+
     /// Computes the GPU memory amount required to allocate data for the polyline.
     MRCUDA_API static size_t heapBytes( const Polyline3& polyline );