FMBulgeSeg2D.h

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// Copyright (C) 2002-2024, Open Design Alliance (the "Alliance"). 
// All rights reserved. 
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// with their copyright notices:
//   
//   This application incorporates Open Design Alliance software pursuant to a license 
//   agreement with Open Design Alliance.
//   Open Design Alliance Copyright (C) 2002-2024 by Open Design Alliance. 
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#ifndef __FM_BULGESEG2D_H__
#define __FM_BULGESEG2D_H__
 
#include "Contours/FMImpCommonSeg2D.h"
 
namespace FacetModeler
{

//
// BulgeSeg2D is a convex 2-D curve given by 2 points and a bulge value
// If the 2 points coincide, the segment has estCoincident type
// Otherwise, if bulge==0, the segment is a straight line segment
//            otherwise it is a circular arc, and bulge=tan(Angle/4)
//
 
class FMGEOMETRY_API BulgeSeg2D : public CommonSeg2DImpl
{
public:
    // Constructors ...
 
    // default constructor
    BulgeSeg2D() : m_dBulge(0) { };
 
    // constructor: 2 endpoints and a bulge value ( tan(a/4) )
    BulgeSeg2D( const OdGePoint2d & ptA, const OdGePoint2d & ptB, double dBulge=0.0 )
        : m_ptStart(ptA)
        , m_ptEnd(ptB)
        , m_dBulge(dBulge)
        { };
 
    BulgeSeg2D( const OdGePoint2d & ptA, const OdGePoint2d & ptB, double dBulge, const Attributes2D& rAttr )
        : m_ptStart(ptA)
        , m_ptEnd(ptB)
        , m_dBulge(dBulge)
        , m_Attr(rAttr)
        { };
 
    // constructor: 2 endpoints and an intermediate point
    BulgeSeg2D( const OdGePoint2d & ptA, const OdGePoint2d & ptB, const OdGePoint2d & ptIntermediate );
 
    // fast copy constructor
    BulgeSeg2D( const BulgeSeg2D  & rSeg )
        : m_ptStart( rSeg.m_ptStart )
        , m_ptEnd( rSeg.m_ptEnd )
        , m_dBulge( rSeg.m_dBulge )
        , m_Attr( rSeg.m_Attr )
        { };
 
    // slower copy constructor
    BulgeSeg2D( const IBulgeSeg2D & rAnySeg );
 
 
    // type info: returns esicBulgeSeg2D
    virtual SegmentImplClass implClass( ) const;

    // Implementation of data getters, not implemented in CommonSeg2DImpl
 
    // returns reference to the starting point
    virtual const OdGePoint2d & startPt() const;
 
    // returns reference to the ending point
    virtual const OdGePoint2d & endPt  () const;
 
    // returns bulge value
    virtual double              bulge  () const;
 

    // Implementation of non-const methods, not implemented in CommonSeg2DImpl
 
    using CommonSeg2DImpl::set;
 
    // Update ends and bulge
    virtual Result set( const OdGePoint2d & ptA, const OdGePoint2d & ptB, double dBulge, const Attributes2D& rAttr );
 
    // VC6 compatibility
    virtual Result set( const OdGePoint2d & ptA, const OdGePoint2d & ptB, double dBulge=0.0 )
    {
        return CommonSeg2DImpl::set( ptA, ptB, dBulge );
    }
 
    virtual Result set( const OdGePoint2d & ptA, const OdGePoint2d & ptB, const OdGePoint2d & ptIntermediate )
    {
        return CommonSeg2DImpl::set( ptA, ptB, ptIntermediate );
    }
 
    virtual Result set( const IBulgeSeg2D& rSeg )
    {
        return CommonSeg2DImpl::set( rSeg );
    }
 
    virtual Result set( const OdGeLineSeg2d& geLine )
    {
        return CommonSeg2DImpl::set( geLine );
    }
 
    virtual Result set( const OdGeCircArc2d& geArc )
    {
        return CommonSeg2DImpl::set( geArc );
    }
 
    // Get attributes (including metadata)
    virtual const Attributes2D& attributes() const;
 
    // Get attributes (including metadata) for update
    virtual       Attributes2D& attributes4U();

    //  overrides ( a faster implementation of some methods )
 
 
    // returns the type of this segment
    virtual SegmentType type() const;
 
 
 
    // To Do ...
 
 
protected:

    // necessary data members
 
    OdGePoint2d m_ptStart; // Starting point
 
    OdGePoint2d m_ptEnd;   // Ending point
 
    double      m_dBulge;  // Bulge value = tan(angle/4)
 
    Attributes2D m_Attr;   // 
};
 
 
 
};
 
 
#endif  //__FM_BULGESEG2D_H__