#7892 Basic support for display of surface lines and bands on intersections

Guard divide by zero issues
2D Intersection View: Do not add parts with wrong coordinates
Add bounding box search tree
Add support display of intersection lines for selected surfaces
Show band between two first intersection lines

ApplicationLibCode/ReservoirDataModel/RigSurface.h

@@ -25,6 +25,12 @@
 #include <map>
 #include <vector>
 
+namespace cvf
+{
+class BoundingBox;
+class BoundingBoxTree;
+} // namespace cvf
+
 class RigSurface : public cvf::Object
 {
 public:
@@ -40,8 +46,16 @@ public:
     std::vector<float>   propertyValues( const QString& propertyName ) const;
     std::vector<QString> propertyNames() const;
 
+    void ensureIntersectionSearchTreeIsBuilt();
+    void findIntersectingTriangles( const cvf::BoundingBox& inputBB, std::vector<size_t>* triangleStartIndices ) const;
+
+private:
+    size_t triangleCount() const;
+
 private:
     std::vector<unsigned>                 m_triangleIndices;
     std::vector<cvf::Vec3d>               m_vertices;
     std::map<QString, std::vector<float>> m_verticeResults;
+
+    cvf::ref<cvf::BoundingBoxTree> m_surfaceBoundingBoxTree;
 };