Tin2d.h

//
// Tin2d.h
//
// Copyright (c) 2005-2011 Virtual Terrain Project
// Free for all uses, see license.txt for details.
//

#pragma once

#include "vtdata/vtTin.h"
#include "ScaledView.h"

class vtElevationGrid;
class vtFeatureSetPoint3D;
class vtFeatureSetPolygon;

#include <set>

struct IntPair
{
    IntPair() {}
    bool operator <(const IntPair &b) const
    {
        if (v0 < b.v0)
            return true;
        else if (v0 > b.v0)
            return false;
        else
        {
            if (v1 < b.v1)
                return true;
            else
                return false;
        }
    }
    bool operator==(const IntPair &b)
    {
        return (v0 == b.v0 && v1 == b.v1);
    }
    IntPair(int i0, int i1) { v0 = i0; v1 = i1; }
    int v0, v1;
};

struct Outline : public std::set<IntPair>
{
    void AddUniqueEdge(const IntPair &b)
    {
        iterator it = find(b);
        if (it != end())
            erase(it);
        else
            insert(b);
    }
};

class vtTin2d : public vtTin
{
public:
    vtTin2d();
    ~vtTin2d();

    vtTin2d(vtElevationGrid *grid);
    vtTin2d(vtFeatureSetPoint3D *set);
    vtTin2d(vtFeatureSetPolygon *set, int iFieldNum);

    void DrawTin(wxDC *pDC, vtScaledView *pView);
    void ComputeEdgeLengths();
    void CullLongEdgeTris();
    void FreeEdgeLengths();
    void SetConstraint(bool bConstrain, double fMaxEdge);
    void MakeOutline();
    int GetMemoryUsed() const;

    double *m_fEdgeLen;
    bool m_bConstrain;
    double m_fMaxEdge;

    Outline m_edges;
};