Route.h

//
// Route.h
//
// Copyright (c) 2001-2011 Virtual Terrain Project
// Free for all uses, see license.txt for details.
//

#ifndef ROUTEH
#define ROUTEH

#include "vtdata/vtString.h"

class vtHeightField3d;
class vtTerrain;
class vtMesh;
class vtUtilStruct;

class vtUtilNode
{
public:
    vtUtilNode();
    void Offset(const DPoint2 &delta);

    DPoint2 m_dpOffsetElevations;   // x=Left, y=Right
    DPoint2 m_dpOffsetDistances;    // x=Left, y=Right
    double dRadAzimuth;             // azimuth (orientation to next node)
    vtUtilStruct *m_struct;         // Object to draw.
    vtString m_sStructName;         // Structure Family

    DPoint2 m_Point;

    vtTransformPtr m_pTrans;
};

class vtRoute
{
public:
    vtRoute(vtTerrain* pT);
    ~vtRoute();

    void AddPoint(const DPoint2 &epos, const char *structname);

    void BuildGeometry(vtHeightField3d *pHeightField);
    void DestroyGeometry();
    void Dirty();

    vtGeode *GetGeom() { return m_pWireGeom; }

    // Station set readers.
    vtUtilNode *GetAt(uint iter)
    {
        return (iter < m_Nodes.GetSize() ? m_Nodes[iter] : NULL);
    }
    long GetSize() { return m_Nodes.GetSize(); }

protected:
    bool _LoadStructure(vtUtilNode *node);
    // bool _WireReader(const char *filename, vtUtilStruct *st);
    void _ComputeStructureRotations();
    void _CreateStruct(int iNode);
    void _DeleteStruct(int iNode);
    void _AddRouteMeshes(vtHeightField3d *pHeightField);
    void _StringWires(long lTowerIndex, vtHeightField3d *pHeightField);
    void _DrawCat(FPoint3 p0, FPoint3 p1,
        double catenary, int iNumSegs, vtMesh *pWireMesh);

    // all routes share the same set of materials
    static vtMaterialArray *m_pRouteMats;
    static void _CreateMaterials();
    static int m_mi_wire;

    vtGeode     *m_pWireGeom;
    vtTerrain   *m_pTheTerrain;
    vtArray<vtUtilNode*>        m_Nodes;

    bool m_bBuilt;
    bool m_bDirty;
};

class vtRouteMap : public vtArray<vtRoute *>
{
public:
    virtual ~vtRouteMap() { Empty(); free(m_Data); m_Data = NULL; m_MaxSize = 0; }
    void DestructItems(uint first, uint last)
    {
        for (uint i = first; i <= last; i++)
            delete GetAt(i);
    }

    bool FindClosestUtilNode(const DPoint2 &point, double error,
                       vtRoute* &route, vtUtilNode* &node, double &closest);
    void BuildGeometry(vtHeightField3d *pHeightField);
    bool FindRouteFromNode(osg::Node *pNode, int &iOffset);
};

#endif //ROUTEH