geometry.h

浙江大学的悟空嵌入式系统模拟器

/////////////////////////////////////////////////////////////////////////////
// Name:        wx/geometry.h
// Purpose:     Common Geometry Classes
// Author:      Stefan Csomor
// Modified by:
// Created:     08/05/99
// RCS-ID:
// Copyright:   (c) 1999 Stefan Csomor
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

#ifndef _WX_GEOMETRY_H_
#define _WX_GEOMETRY_H_

#if defined(__GNUG__) && !defined(__APPLE__)
    #pragma interface "geometry.cpp"
#endif

#include "wx/defs.h"

#ifndef wxUSE_GEOMETRY
    #define wxUSE_GEOMETRY 0
#endif

#if wxUSE_GEOMETRY

#include "wx/utils.h"
#include "wx/gdicmn.h"
#include <math.h>

#ifdef __WXMSW__
    #define wxMulDivInt32( a , b , c ) ::MulDiv( a , b , c )
#elif defined( __WXMAC__ )
    #define wxMulDivInt32( a , b , c ) ( (wxInt32) ( ( (wxInt64)(a) * (wxInt64)(b) ) / (wxInt64)(c) ) )
#else
    #define wxMulDivInt32( a , b , c ) ((wxInt32)((a)*(((wxDouble)b)/((wxDouble)c))))
#endif

class wxDataInputStream;
class wxDataOutputStream;

// clipping from Cohen-Sutherland

enum wxOutCode
{
    wxInside = 0x00 ,
    wxOutLeft = 0x01 ,
    wxOutRight = 0x02 ,
    wxOutTop = 0x08 ,
    wxOutBottom = 0x04
};

class WXDLLEXPORT wxPoint2DInt
{
public :
    inline wxPoint2DInt();
    inline wxPoint2DInt( wxInt32 x , wxInt32 y );
    inline wxPoint2DInt( const wxPoint2DInt &pt );
    inline wxPoint2DInt( const wxPoint &pt );

    // noops for this class, just return the coords
    inline void GetFloor( wxInt32 *x , wxInt32 *y ) const;
    inline void GetRounded( wxInt32 *x , wxInt32 *y ) const;

    inline wxDouble GetVectorLength() const;
           wxDouble GetVectorAngle() const;
    inline void SetVectorLength( wxDouble length );
           void SetVectorAngle( wxDouble degrees );
           void SetPolarCoordinates( wxInt32 angle , wxInt32 length );
    // set the vector length to 1.0, preserving the angle
    inline void Normalize();

    inline wxDouble GetDistance( const wxPoint2DInt &pt ) const;
    inline wxDouble GetDistanceSquare( const wxPoint2DInt &pt ) const;
    inline wxInt32 GetDotProduct( const wxPoint2DInt &vec ) const;
    inline wxInt32 GetCrossProduct( const wxPoint2DInt &vec ) const;

    // the reflection of this point
    inline wxPoint2DInt operator-();

    inline wxPoint2DInt& operator=(const wxPoint2DInt& pt);
    inline wxPoint2DInt& operator+=(const wxPoint2DInt& pt);
    inline wxPoint2DInt& operator-=(const wxPoint2DInt& pt);
    inline wxPoint2DInt& operator*=(const wxPoint2DInt& pt);
    inline wxPoint2DInt& operator*=(wxDouble n);
    inline wxPoint2DInt& operator*=(wxInt32 n);
    inline wxPoint2DInt& operator/=(const wxPoint2DInt& pt);
    inline wxPoint2DInt& operator/=(wxDouble n);
    inline wxPoint2DInt& operator/=(wxInt32 n);
    inline operator wxPoint() const;
    inline bool operator==(const wxPoint2DInt& pt) const;
    inline bool operator!=(const wxPoint2DInt& pt) const;

    void WriteTo( wxDataOutputStream &stream ) const;
    void ReadFrom( wxDataInputStream &stream );

    wxInt32 m_x;
    wxInt32 m_y;
};

inline wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
inline wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
inline wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt);
inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt);
inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n);
inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n);
inline wxPoint2DInt operator/(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n);
inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n);

inline wxPoint2DInt::wxPoint2DInt()
{
    m_x = 0;
    m_y = 0;
}

inline wxPoint2DInt::wxPoint2DInt( wxInt32 x , wxInt32 y )
{
    m_x = x;
    m_y = y;
}

inline wxPoint2DInt::wxPoint2DInt( const wxPoint2DInt &pt )
{
    m_x = pt.m_x;
    m_y = pt.m_y;
}

inline wxPoint2DInt::wxPoint2DInt( const wxPoint &pt )
{
    m_x = pt.x;
    m_y = pt.y;
}

inline void wxPoint2DInt::GetFloor( wxInt32 *x , wxInt32 *y ) const
{
    if ( x )
        *x = m_x;
    if ( y )
        *y = m_y;
}

inline void wxPoint2DInt::GetRounded( wxInt32 *x , wxInt32 *y ) const
{
    GetFloor(x, y);
}

inline wxDouble wxPoint2DInt::GetVectorLength() const
{
    // cast needed MIPSpro compiler under SGI
    return sqrt( (double)(m_x)*(m_x) + (m_y)*(m_y) );
}

inline void wxPoint2DInt::SetVectorLength( wxDouble length )
{
    wxDouble before = GetVectorLength();
    m_x = (wxInt32)(m_x * length / before);
    m_y = (wxInt32)(m_y * length / before);
}

inline void wxPoint2DInt::Normalize()
{
    SetVectorLength( 1 );
}

inline wxDouble wxPoint2DInt::GetDistance( const wxPoint2DInt &pt ) const
{
    return sqrt( GetDistanceSquare( pt ) );
}

inline wxDouble wxPoint2DInt::GetDistanceSquare( const wxPoint2DInt &pt ) const
{
    return ( (pt.m_x-m_x)*(pt.m_x-m_x) + (pt.m_y-m_y)*(pt.m_y-m_y) );
}

inline wxInt32 wxPoint2DInt::GetDotProduct( const wxPoint2DInt &vec ) const
{
    return ( m_x * vec.m_x + m_y * vec.m_y );
}

inline wxInt32 wxPoint2DInt::GetCrossProduct( const wxPoint2DInt &vec ) const
{
    return ( m_x * vec.m_y - vec.m_x * m_y );
}

inline wxPoint2DInt::operator wxPoint() const
{
    return wxPoint( m_x, m_y);
}

inline wxPoint2DInt wxPoint2DInt::operator-()
{
    return wxPoint2DInt( -m_x, -m_y);
}

inline wxPoint2DInt& wxPoint2DInt::operator=(const wxPoint2DInt& pt)
{
    m_x = pt.m_x;
    m_y = pt.m_y;
    return *this;
}

inline wxPoint2DInt& wxPoint2DInt::operator+=(const wxPoint2DInt& pt)
{
    m_x = m_x + pt.m_x;
    m_y = m_y + pt.m_y;
    return *this;
}

inline wxPoint2DInt& wxPoint2DInt::operator-=(const wxPoint2DInt& pt)
{
    m_x = m_x - pt.m_x;
    m_y = m_y - pt.m_y;
    return *this;
}

inline wxPoint2DInt& wxPoint2DInt::operator*=(const wxPoint2DInt& pt)
{
    m_x = m_x + pt.m_x;
    m_y = m_y + pt.m_y;
    return *this;
}

inline wxPoint2DInt& wxPoint2DInt::operator/=(const wxPoint2DInt& pt)
{
    m_x = m_x - pt.m_x;
    m_y = m_y - pt.m_y;
    return *this;
}

inline bool wxPoint2DInt::operator==(const wxPoint2DInt& pt) const
{
    return m_x == pt.m_x && m_y == pt.m_y;
}

inline bool wxPoint2DInt::operator!=(const wxPoint2DInt& pt) const
{
    return m_x != pt.m_x || m_y != pt.m_y;
}

inline wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
{
    return wxPoint2DInt( pt1.m_x + pt2.m_x , pt1.m_y + pt2.m_y );
}

inline wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
{
    return wxPoint2DInt( pt1.m_x - pt2.m_x , pt1.m_y - pt2.m_y );
}


inline wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
{
    return wxPoint2DInt( pt1.m_x * pt2.m_x , pt1.m_y * pt2.m_y );
}

inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt)
{
    return wxPoint2DInt( pt.m_x * n , pt.m_y * n );
}

inline wxPoint2DInt operator*(wxDouble n , const wxPoint2DInt& pt)
{
    return wxPoint2DInt( (int) (pt.m_x * n) , (int) (pt.m_y * n) );
}

inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n)
{
    return wxPoint2DInt( pt.m_x * n , pt.m_y * n );
}

inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxDouble n)
{