#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/ModelVisualization/WindowEdgeAxesOverlayItem/RivWindowEdgeAxesOverlayItem.cpp

@@ -132,6 +132,9 @@ void RivWindowEdgeAxesOverlayItem::updateFromCamera( const Camera* camera )
         windowMaxInDomain   = m_dispalyCoordsTransform->transformToDomainCoord( windowMaxInDomain );
     }
 
+    // For extreme zoom factors we might end up with both variables as zero. Return to avoid divide by zero.
+    if ( windowOrigoInDomain == windowMaxInDomain ) return;
+
     double domainMinX = windowOrigoInDomain.x();
     double domainMaxX = windowMaxInDomain.x();