Initial commit of ResInsight version 0.4.8

VisualizationModules/LibGeometry/cvfOutlineEdgeExtractor.h

@@ -0,0 +1,62 @@
+//##################################################################################################
+//
+//   Custom Visualization Core library
+//   Copyright (C) 2011-2012 Ceetron AS
+//    
+//   This library is free software: you can redistribute it and/or modify 
+//   it under the terms of the GNU General Public License as published by 
+//   the Free Software Foundation, either version 3 of the License, or 
+//   (at your option) any later version. 
+//    
+//   This library is distributed in the hope that it will be useful, but WITHOUT ANY 
+//   WARRANTY; without even the implied warranty of MERCHANTABILITY or 
+//   FITNESS FOR A PARTICULAR PURPOSE.   
+//    
+//   See the GNU General Public License at <<http://www.gnu.org/licenses/gpl.html>> 
+//   for more details. 
+//
+//##################################################################################################
+
+#pragma once
+
+#include "cvfArray.h"
+
+#include <map>
+
+namespace cvf {
+
+
+
+//==================================================================================================
+//
+// 
+//
+//==================================================================================================
+class OutlineEdgeExtractor
+{
+public:
+    OutlineEdgeExtractor(double creaseAngle, const Vec3fValueArray& vertexArray);
+
+public:
+    void            addPrimitives(uint verticesPerPrimitive, const uint* indices, size_t indexCount);
+    void            addPrimitives(uint verticesPerPrimitive, const UIntArray& indices);
+    void            addFaceList(const UIntArray& faceList);
+
+    ref<UIntArray>              lineIndices() const;
+    const std::vector<Vec3f>&   faceNormals();          // Surface normals for the faces, normalized
+
+private:
+    Vec3f           computeFaceNormal(const uint* faceVertexIndices, uint numVerticesInFace) const;
+    bool            isFaceAngleAboveThreshold(size_t faceIdx1, size_t faceIdx2) const;
+
+private:
+    double                  m_creaseAngle;          // Threshold crease angle in radians
+    const Vec3fValueArray&  m_vertexArray;
+    std::map<int64, size_t> m_edgeToFaceIndexMap;   
+    std::vector<Vec3f>      m_faceNormals;          // Surface normals for the faces, normalized
+};
+
+
+}
+
+