OsgMeshMinVertexDistanceVisitor.h

#pragma once

namespace OsgAnimatSim
{
        namespace Visualization
        {

// Visitor to return the world coordinates of a node.
// It traverses from the starting node to the parent.
// The first time it reaches a root node, it stores the world coordinates of 
// the node it started from.  The world coordinates are found by concatenating all 
// the matrix transforms found on the path from the start node to the root node.

class ANIMAT_OSG_PORT OsgMeshMinVertexDistanceVisitor : public osg::NodeVisitor 
{
public:
   OsgMeshMinVertexDistanceVisitor():
      osg::NodeVisitor(NodeVisitor::TRAVERSE_ALL_CHILDREN)
      {
                        m_fltMinVertDist = -1;
                        m_iP = -1;
                        m_iQ = -1;
                        m_lpGeom = NULL;
      }
      virtual void apply(osg::Node &node);

      float MinVertexDistance() 
      {
         return m_fltMinVertDist;
      }
protected:
        void FindMinVertex(osg::Geometry *osgGeom, osg::Vec3Array *aryVert);

        float m_fltMinVertDist;
        osg::Vec3 m_vP;
        osg::Vec3 m_vQ;
        int m_iP;
        int m_iQ;
        osg::Geometry *m_lpGeom;
};

        }// end Visualization
}//end OsgAnimatSim