Elastic.h

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

#pragma once


class ElasticPolyline
{
public:
    ElasticPolyline();

    void SetTerrain(vtTerrain *pTerr);
    void SetPostHeight(float fMeters) { m_fPostHeight = fMeters; }
    void SetLineHeight(float fMeters) { m_fLineHeight = fMeters; }
    void SetLineColor(const RGBAf &color);

    void SetPolyline(const DLine2 &line);
    void AddPoint(const DPoint2 &point, bool bEnforceRightAngles = false);
    void RemovePoint(int iPoint);
    void SetPoint(int iPoint, const DPoint2 &point, bool bEnforceRightAngles = false);
    void EnforceRightAngles();
    void Clear();

    DLine2 &GetPolyline() { return m_Line; }
    uint NumPoints() { return m_Line.GetSize(); }

protected:
    void Realize();

    vtMaterialArrayPtr m_Materials;
    vtGroupPtr  m_Container;
    DLine2      m_Line;
    vtGeodePtr m_Marker;
    vtTerrain *m_pTerr;
    float       m_fPostHeight;
    float       m_fLineHeight;
};
  // utility