www.pudn.com > Sterren_ASe_Explorer.rar > ase_piescan.h

/* Copyright (C) William van der Sterren, 2002.  
 * All rights reserved worldwide. 
 * 
 * This software is provided "as is" without express or implied 
 * warranties. You may freely copy and compile this source into 
 * applications you distribute provided that the copyright text 
 * below is included in the resulting source code, for example: 
 * "Portions Copyright (C) William van der Sterren, 2002" 
 */ 
 
/* Copyright (C) James Matthews, 2001.  
 * All rights reserved worldwide. 
 * 
 * This software is provided "as is" without express or implied 
 * warranties. You may freely copy and compile this source into 
 * applications you distribute provided that the copyright text 
 * below is included in the resulting source code, for example: 
 * "Portions Copyright (C) James Matthews, 2001" 
 */ 
 
/***************************************************************************   
 *                                                                             
 *     purpose: class computing radial line-of-sight scan mask/template 
*/ 
 
 
#ifndef _ASE_PIESCAN_H_ 
#define _ASE_PIESCAN_H_ 
 
#if _MSC_VER > 1000 
#pragma once 
#endif 
 
 
#include "ase_ray.h" 
 
 
class ASE_PieScan  
{  
  public: 
    ASE_PieScan(); 
 
    void PrepareScan(float aRange);  
 
  public: // queries 
    unsigned int GetNumberOfRays() const; 
    void         GetRayForLocation(unsigned int        aRayNumber,  
                                   const ASE_CoordPair aPosition,  
                                   CoordPairList&      theRayTrace 
                                  ) const; 
 
    bool         IsRayInSector(unsigned int aRayNumber, unsigned int aSector) const; 
 
  protected: // scan computations 
    void PrepareScanToPosition(float anX, float anY);  
 
    bool IsIdenticalToLastRay(const CoordPairList& aNewRay) const; 
   
  private: 
    typedef std::vector Rays; 
 
    float         m_MaxRange; 
    Rays          m_Rays; 
}; 
 
 
 
#endif // _ASE_PIESCAN_H_