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BP_Endpoint.h

/*
 * SOLID - Software Library for Interference Detection
 * 
 * Copyright (C) 2001-2003  Dtecta.  All rights reserved.
 *
 * This library may be distributed under the terms of the Q Public License
 * (QPL) as defined by Trolltech AS of Norway and appearing in the file
 * LICENSE.QPL included in the packaging of this file.
 *
 * This library may be distributed and/or modified under the terms of the
 * GNU General Public License (GPL) version 2 as published by the Free Software
 * Foundation and appearing in the file LICENSE.GPL included in the
 * packaging of this file.
 *
 * This library is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * Commercial use or any other use of this library not covered by either 
 * the QPL or the GPL requires an additional license from Dtecta. 
 * Please contact info@dtecta.com for enquiries about the terms of commercial
 * use of this library.
 */

#ifndef BP_ENDPOINT_H
#define BP_ENDPOINT_H

#include "SOLID_types.h"

class BP_Proxy;

class BP_Link {
public:
      BP_Link() {}
      explicit BP_Link(BP_Proxy *proxy) :
            m_proxy(proxy)
      {}

      DT_Index  m_index;
      DT_Count  m_count;
      BP_Proxy *m_proxy;
};

typedef unsigned int Uint32;

class BP_Endpoint {
public:
    enum { 
            MINIMUM = 0x00000000, 
            MAXIMUM = 0x80000000,   
            TYPEBIT = 0x00000001
      };

    BP_Endpoint() {}
    BP_Endpoint(DT_Scalar pos, Uint32 type, BP_Link *link) 
        :   m_link(link)
      {
            setPos(pos, type);
      }
 
      DT_Scalar getPos()   const { return m_pos; }
      DT_Index&   getIndex() const { return m_link->m_index; }
      DT_Count&   getCount() const { return m_link->m_count; }
      BP_Proxy *getProxy() const { return m_link->m_proxy; }
      
      DT_Index   getEndIndex()   const { return (m_link + 1)->m_index; }
      
      Uint32 getType() const 
      { 
            return (m_bits & TYPEBIT) ? (~m_bits & MAXIMUM) : (m_bits & MAXIMUM);
      }

      void setPos(DT_Scalar pos, Uint32 type) 
      {
            m_pos = pos; 
            if ((m_bits & MAXIMUM) == type) 
            {
                  m_bits &= ~TYPEBIT;
            }
            else 
            {
                  m_bits |= TYPEBIT;
            }
      }

private:
      union {
            DT_Scalar    m_pos;
            Uint32       m_bits;
      };
      BP_Link        *m_link;
};

inline bool operator<(const BP_Endpoint& a, const BP_Endpoint& b) 
{
    return a.getPos() < b.getPos(); 
}

#endif











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