include/wx/geometry.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        geometry.h
   3 // Purpose:     Common Geometry Classes
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     08/05/99
   7 // RCS-ID:
   8 // Copyright:   (c)
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_GEOMETRY_H_
  13 #define _WX_GEOMETRY_H_
  14
  15 #ifdef __GNUG__
  16 #pragma interface "geometry.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20
  21 #ifndef wxUSE_GEOMETRY
  22     #define wxUSE_GEOMETRY 0
  23 #endif
  24
  25 #if wxUSE_GEOMETRY
  26
  27 #include "wx/utils.h"
  28 #include "wx/gdicmn.h"
  29 #include <math.h>
  30
  31 #ifdef __WXMSW__
  32     #define wxMulDivInt32( a , b , c ) ::MulDiv( a , b , c )
  33 #elif defined( __WXMAC__ )
  34     #include "Math64.h"
  35     #define wxMulDivInt32( a , b , c ) S32Set( S64Div( S64Multiply( S64Set(a) , S64Set(b) ) , S64Set(c) ) )
  36 #else
  37     #define wxMulDivInt32( a , b , c ) ((wxInt32)((a)*(((wxDouble)b)/((wxDouble)c))))
  38 #endif
  39
  40 class wxDataInputStream ;
  41 class wxDataOutputStream ;
  42
  43 // clipping from Cohen-Sutherland
  44
  45 enum wxOutCode
  46 {
  47     wxInside = 0x00 ,
  48     wxOutLeft = 0x01 ,
  49     wxOutRight = 0x02 ,
  50     wxOutTop = 0x08 ,
  51     wxOutBottom = 0x04
  52 } ;
  53
  54 // wxPoint2Ds represent a point or a vector in a 2d coordinate system
  55
  56 class WXDLLEXPORT wxPoint2DDouble
  57 {
  58 public :
  59         wxPoint2DDouble();
  60         wxPoint2DDouble( wxDouble x , wxDouble y ) ;
  61         wxPoint2DDouble( const wxPoint2DDouble &pt ) ;
  62
  63         // two different conversions to integers, floor and rounding
  64         void GetFloor( wxInt32 *x , wxInt32 *y ) ;
  65         void GetRounded( wxInt32 *x , wxInt32 *y ) ;
  66
  67         wxDouble GetVectorLength() ;
  68         wxDouble GetVectorAngle() ;
  69         void SetVectorLength( wxDouble length ) ;
  70         void SetVectorAngle( wxDouble degrees ) ;
  71         void SetPolarCoordinates( wxDouble angle , wxDouble length ) ;
  72         // set the vector length to 1.0, preserving the angle
  73         void Normalize() ;
  74
  75         wxDouble GetDistance( const wxPoint2DDouble &pt ) ;
  76         wxDouble GetDistanceSquare( const wxPoint2DDouble &pt ) ;
  77         wxDouble GetDotProduct( const wxPoint2DDouble &vec ) ;
  78         wxDouble GetCrossProduct( const wxPoint2DDouble &vec ) ;
  79
  80         // the reflection of this point
  81         wxPoint2DDouble operator-() ;
  82
  83         wxPoint2DDouble& operator=(const wxPoint2DDouble& pt) ;
  84         wxPoint2DDouble& operator+=(const wxPoint2DDouble& pt) ;
  85         wxPoint2DDouble& operator-=(const wxPoint2DDouble& pt) ;
  86         wxPoint2DDouble& operator*=(const wxPoint2DDouble& pt) ;
  87         wxPoint2DDouble& operator*=(wxDouble n) ;
  88         wxPoint2DDouble& operator*=(wxInt32 n) ;
  89         wxPoint2DDouble& operator/=(const wxPoint2DDouble& pt) ;
  90         wxPoint2DDouble& operator/=(wxDouble n) ;
  91         wxPoint2DDouble& operator/=(wxInt32 n) ;
  92
  93         bool operator==(const wxPoint2DDouble& pt) const ;
  94         bool operator!=(const wxPoint2DDouble& pt) const ;
  95
  96         wxDouble m_x ;
  97         wxDouble m_y ;
  98 } ;
  99
 100 wxPoint2DDouble operator+(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2) ;
 101 wxPoint2DDouble operator-(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2) ;
 102 wxPoint2DDouble operator*(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2) ;
 103 wxPoint2DDouble operator*(wxDouble n , const wxPoint2DDouble& pt) ;
 104 wxPoint2DDouble operator*(wxInt32 n , const wxPoint2DDouble& pt) ;
 105 wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxDouble n) ;
 106 wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxInt32 n) ;
 107 wxPoint2DDouble operator/(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2) ;
 108 wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxDouble n) ;
 109 wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxInt32 n) ;
 110
 111 inline wxPoint2DDouble::wxPoint2DDouble()
 112 {
 113     m_x = 0.0 ;
 114     m_y = 0.0 ;
 115 }
 116
 117 inline wxPoint2DDouble::wxPoint2DDouble( wxDouble x , wxDouble y )
 118 {
 119     m_x = x ;
 120     m_y = y ;
 121 }
 122
 123 inline wxPoint2DDouble::wxPoint2DDouble( const wxPoint2DDouble &pt )
 124 {
 125     m_x = pt.m_x ;
 126     m_y = pt.m_y ;
 127 }
 128
 129 inline void wxPoint2DDouble::GetFloor( wxInt32 *x , wxInt32 *y )
 130 {
 131     *x = (wxInt32) floor( m_x ) ;
 132     *y = (wxInt32) floor( m_y ) ;
 133 }
 134
 135 inline void wxPoint2DDouble::GetRounded( wxInt32 *x , wxInt32 *y )
 136 {
 137     *x = (wxInt32) floor( m_x + 0.5 ) ;
 138     *y = (wxInt32) floor( m_y + 0.5) ;
 139 }
 140
 141 inline wxDouble wxPoint2DDouble::GetDistance( const wxPoint2DDouble &pt )
 142 {
 143     return sqrt( GetDistanceSquare( pt ) );
 144 }
 145
 146 inline wxDouble wxPoint2DDouble::GetDistanceSquare( const wxPoint2DDouble &pt )
 147 {
 148     return ( (pt.m_x-m_x)*(pt.m_x-m_x) + (pt.m_y-m_y)*(pt.m_y-m_y) ) ;
 149 }
 150
 151 inline wxDouble wxPoint2DDouble::GetDotProduct( const wxPoint2DDouble &vec )
 152 {
 153     return ( m_x * vec.m_x + m_y * vec.m_y ) ;
 154 }
 155
 156 inline wxDouble wxPoint2DDouble::GetCrossProduct( const wxPoint2DDouble &vec )
 157 {
 158     return ( m_x * vec.m_y - vec.m_x * m_y ) ;
 159 }
 160
 161 inline wxPoint2DDouble wxPoint2DDouble::operator-()
 162 {
 163     return wxPoint2DDouble( -m_x, -m_y);
 164 }
 165
 166 inline wxPoint2DDouble& wxPoint2DDouble::operator=(const wxPoint2DDouble& pt)
 167 {
 168     m_x = pt.m_x ;
 169     m_y = pt.m_y;
 170     return *this ;
 171 }
 172
 173 inline wxPoint2DDouble& wxPoint2DDouble::operator+=(const wxPoint2DDouble& pt)
 174 {
 175     m_x = m_x + pt.m_x ;
 176     m_y = m_y + pt.m_y;
 177     return *this ;
 178 }
 179
 180 inline wxPoint2DDouble& wxPoint2DDouble::operator-=(const wxPoint2DDouble& pt)
 181 {
 182     m_x = m_x - pt.m_x ;
 183     m_y = m_y - pt.m_y;
 184     return *this ;
 185 }
 186
 187 inline wxPoint2DDouble& wxPoint2DDouble::operator*=(const wxPoint2DDouble& pt)
 188 {
 189     m_x = m_x + pt.m_x ;
 190     m_y = m_y + pt.m_y;
 191     return *this ;
 192 }
 193
 194 inline wxPoint2DDouble& wxPoint2DDouble::operator/=(const wxPoint2DDouble& pt)
 195 {
 196     m_x = m_x - pt.m_x ;
 197     m_y = m_y - pt.m_y;
 198     return *this ;
 199 }
 200
 201 inline bool wxPoint2DDouble::operator==(const wxPoint2DDouble& pt) const
 202 {
 203     return m_x == pt.m_x && m_y == pt.m_y;
 204 }
 205
 206 inline bool wxPoint2DDouble::operator!=(const wxPoint2DDouble& pt) const
 207 {
 208     return m_x != pt.m_x || m_y != pt.m_y;
 209 }
 210
 211 inline wxPoint2DDouble operator+(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 212 {
 213     return wxPoint2DDouble( pt1.m_x + pt2.m_x , pt1.m_y + pt2.m_y ) ;
 214 }
 215
 216 inline wxPoint2DDouble operator-(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 217 {
 218     return wxPoint2DDouble( pt1.m_x - pt2.m_x , pt1.m_y - pt2.m_y ) ;
 219 }
 220
 221
 222 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 223 {
 224     return wxPoint2DDouble( pt1.m_x * pt2.m_x , pt1.m_y * pt2.m_y ) ;
 225 }
 226
 227 inline wxPoint2DDouble operator*(wxDouble n , const wxPoint2DDouble& pt)
 228 {
 229     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n ) ;
 230 }
 231
 232 inline wxPoint2DDouble operator*(wxInt32 n , const wxPoint2DDouble& pt)
 233 {
 234     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n ) ;
 235 }
 236
 237 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxDouble n)
 238 {
 239     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n ) ;
 240 }
 241
 242 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxInt32 n)
 243 {
 244     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n ) ;
 245 }
 246
 247 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 248 {
 249     return wxPoint2DDouble( pt1.m_x / pt2.m_x , pt1.m_y / pt2.m_y ) ;
 250 }
 251
 252 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxDouble n)
 253 {
 254     return wxPoint2DDouble( pt.m_x / n , pt.m_y / n ) ;
 255 }
 256
 257 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxInt32 n)
 258 {
 259     return wxPoint2DDouble( pt.m_x / n , pt.m_y / n ) ;
 260 }
 261
 262 // wxRect2Ds are a axis-aligned rectangles, each side of the rect is parallel to the x- or m_y- axis. The rectangle is either defined by the
 263 // top left and bottom right corner, or by the top left corner and size. A point is contained within the rectangle if
 264 // left <= x < right  and top <= m_y < bottom , thus it is a half open interval.
 265
 266 class WXDLLEXPORT wxRect2DDouble
 267 {
 268 public:
 269        wxRect2DDouble() { m_x = m_y = m_width = m_height = 0 ; }
 270        wxRect2DDouble(wxDouble x, wxDouble y, wxDouble w, wxDouble h) { m_x = x ; m_y = y ; m_width = w ;  m_height = h ; }
 271        wxRect2DDouble(const wxPoint2DDouble& topLeft, const wxPoint2DDouble& bottomRight);
 272        wxRect2DDouble(const wxPoint2DDouble& pos, const wxSize& size);
 273        wxRect2DDouble(const wxRect2DDouble& rect);
 274
 275         // single attribute accessors
 276
 277       inline wxPoint2DDouble GetPosition() { return wxPoint2DDouble(m_x, m_y); }
 278        inline wxSize GetSize() { return wxSize(m_width, m_height); }
 279
 280         // for the edge and corner accessors there are two setters conterparts, the Set.. functions keep the other corners at their
 281         // position whenever sensible, the Move.. functions keep the size of the rect and move the other corners apropriately
 282
 283       inline wxDouble GetLeft() const { return m_x; }
 284        inline void SetLeft( wxDouble n ) { m_width += m_x - n ; m_x = n ; }
 285        inline void MoveLeftTo( wxDouble n ) { m_x = n ; }
 286        inline wxDouble GetTop() const { return m_y; }
 287        inline void SetTop( wxDouble n ) { m_height += m_y - n ; m_y = n ; }
 288        inline void MoveTopTo( wxDouble n ) { m_y = n ; }
 289        inline wxDouble GetBottom() const { return m_y + m_height; }
 290        inline void SetBottom( wxDouble n ) { m_height += n - (m_y+m_height) ;}
 291        inline void MoveBottomTo( wxDouble n ) { m_y = n - m_height ; }
 292        inline wxDouble GetRight() const { return m_x + m_width; }
 293        inline void SetRight( wxDouble n ) { m_width += n - (m_x+m_width)  ; }
 294        inline void MoveRightTo( wxDouble n ) { m_x = n - m_width ; }
 295
 296         inline wxPoint2DDouble GetLeftTop() const { return wxPoint2DDouble( m_x , m_y ) ; }
 297         inline void SetLeftTop( const wxPoint2DDouble &pt ) { m_width += m_x - pt.m_x ; m_height += m_y - pt.m_y ; m_x = pt.m_x ; m_y = pt.m_y ; }
 298         inline void MoveLeftTopTo( const wxPoint2DDouble &pt ) { m_x = pt.m_x ; m_y = pt.m_y ; }
 299         inline wxPoint2DDouble GetLeftBottom() const { return wxPoint2DDouble( m_x , m_y + m_height ) ; }
 300         inline void SetLeftBottom( const wxPoint2DDouble &pt ) { m_width += m_x - pt.m_x ; m_height += pt.m_y - (m_y+m_height)  ; m_x = pt.m_x ; }
 301         inline void MoveLeftBottomTo( const wxPoint2DDouble &pt ) { m_x = pt.m_x ; m_y = pt.m_y - m_height; }
 302         inline wxPoint2DDouble GetRightTop() const { return wxPoint2DDouble( m_x+m_width , m_y ) ; }
 303         inline void SetRightTop( const wxPoint2DDouble &pt ) { m_width += pt.m_x - ( m_x + m_width ) ; m_height += m_y - pt.m_y ; m_y = pt.m_y ; }
 304         inline void MoveRightTopTo( const wxPoint2DDouble &pt ) { m_x = pt.m_x - m_width ; m_y = pt.m_y ; }
 305         inline wxPoint2DDouble GetRightBottom() const { return wxPoint2DDouble( m_x+m_width , m_y + m_height ) ; }
 306         inline void SetRightBottom( const wxPoint2DDouble &pt ) { m_width += pt.m_x - ( m_x + m_width ) ; m_height += pt.m_y - (m_y+m_height) ;}
 307         inline void MoveRightBottomTo( const wxPoint2DDouble &pt ) { m_x = pt.m_x - m_width ; m_y = pt.m_y - m_height; }
 308         inline wxPoint2DDouble GetCentre() const { return wxPoint2DDouble( m_x+m_width/2 , m_y+m_height/2 ) ; }
 309         inline void SetCentre( const wxPoint2DDouble &pt ) { MoveCentreTo( pt ) ; }    // since this is impossible without moving...
 310         inline void MoveCentreTo( const wxPoint2DDouble &pt ) { m_x += pt.m_x - (m_x+m_width/2) , m_y += pt.m_y -(m_y+m_height/2) ; }
 311         inline wxOutCode GetOutcode( const wxPoint2DDouble &pt ) const
 312             { return (wxOutCode) (( ( pt.m_x < m_x ) ? wxOutLeft : 0 ) +
 313                      ( ( pt.m_x >= m_x + m_width ) ? wxOutRight : 0 ) +
 314                      ( ( pt.m_y < m_y ) ? wxOutTop : 0 )  +
 315                      ( ( pt.m_y >= m_y + m_height ) ? wxOutBottom : 0 )) ; }
 316         inline bool Contains( const wxPoint2DDouble &pt ) const
 317             { return  GetOutcode( pt ) == wxInside ; }
 318         inline bool Contains( const wxRect2DDouble &rect ) const
 319             { return ( ( ( m_x <= rect.m_x ) && ( rect.m_x + rect.m_width <= m_x + m_width ) ) &&
 320                 ( ( m_y <= rect.m_y ) && ( rect.m_y + rect.m_height <= m_y + m_height ) ) ) ; }
 321         inline bool IsEmpty() const
 322             { return ( m_width <= 0 || m_height <= 0 ) ; }
 323         inline bool HaveEqualSize( const wxRect2DDouble &rect ) const
 324             { return ( rect.m_width == m_width && rect.m_height == m_height ) ; }
 325
 326         inline void Inset( wxDouble x , wxDouble y ) { m_x += x ; m_y += y ; m_width -= 2 * x ; m_height -= 2 * y ; }
 327         inline void Inset( wxDouble left , wxDouble top ,wxDouble right , wxDouble bottom  )
 328             { m_x += left ; m_y += top ; m_width -= left + right ; m_height -= top + bottom ;}
 329         inline void Offset( const wxPoint2DDouble &pt ) { m_x += pt.m_x ; m_y += pt.m_y ; }
 330         void ConstrainTo( const wxRect2DDouble &rect ) ;
 331         inline wxPoint2DDouble Interpolate( wxInt32 widthfactor , wxInt32 heightfactor ) { return wxPoint2DDouble( m_x + m_width * widthfactor , m_y + m_height * heightfactor ) ; }
 332
 333         static void Intersect( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest ) ;
 334         inline void Intersect( const wxRect2DDouble &otherRect ) { Intersect( *this , otherRect , this ) ; }
 335         inline wxRect2DDouble CreateIntersection( const wxRect2DDouble &otherRect ) const { wxRect2DDouble result ; Intersect( *this , otherRect , &result) ; return result ; }
 336         bool Intersects( const wxRect2DDouble &rect ) const ;
 337
 338         static void Union( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest ) ;
 339         void Union( const wxRect2DDouble &otherRect )  { Union( *this , otherRect , this ) ; }
 340         void Union( const wxPoint2DDouble &pt ) ;
 341         inline wxRect2DDouble CreateUnion( const wxRect2DDouble &otherRect ) const { wxRect2DDouble result ; Union( *this , otherRect , &result) ; return result ; }
 342
 343         inline void Scale( wxDouble f ) { m_x *= f ; m_y *= f ; m_width *= f ; m_height *= f ;}
 344         inline void Scale( wxInt32 num , wxInt32 denum )
 345             { m_x *= ((wxDouble)num)/((wxDouble)denum) ; m_y *= ((wxDouble)num)/((wxDouble)denum) ;
 346                 m_width *= ((wxDouble)num)/((wxDouble)denum) ; m_height *= ((wxDouble)num)/((wxDouble)denum) ;}
 347
 348        wxRect2DDouble& operator = (const wxRect2DDouble& rect);
 349        bool operator == (const wxRect2DDouble& rect);
 350        bool operator != (const wxRect2DDouble& rect);
 351
 352        wxDouble m_x ;
 353         wxDouble m_y ;
 354         wxDouble m_width;
 355                       wxDouble m_height;
 356 };
 357
 358 class WXDLLEXPORT wxPoint2DInt
 359 {
 360 public :
 361         wxPoint2DInt();
 362         wxPoint2DInt( wxInt32 x , wxInt32 y ) ;
 363         wxPoint2DInt( const wxPoint2DInt &pt ) ;
 364         wxPoint2DInt( const wxPoint &pt ) ;
 365
 366         // two different conversions to integers, floor and rounding
 367         void GetFloor( wxInt32 *x , wxInt32 *y ) ;
 368         void GetRounded( wxInt32 *x , wxInt32 *y ) ;
 369
 370         wxDouble GetVectorLength() ;
 371         wxDouble GetVectorAngle() ;
 372         void SetVectorLength( wxDouble length ) ;
 373         void SetVectorAngle( wxDouble degrees ) ;
 374         void SetPolarCoordinates( wxInt32 angle , wxInt32 length ) ;
 375         // set the vector length to 1.0, preserving the angle
 376         void Normalize() ;
 377
 378         wxDouble GetDistance( const wxPoint2DInt &pt ) const ;
 379         wxDouble GetDistanceSquare( const wxPoint2DInt &pt ) const;
 380         wxInt32 GetDotProduct( const wxPoint2DInt &vec ) const;
 381         wxInt32 GetCrossProduct( const wxPoint2DInt &vec ) const;
 382
 383         // the reflection of this point
 384         wxPoint2DInt operator-() ;
 385
 386         wxPoint2DInt& operator=(const wxPoint2DInt& pt) ;
 387         wxPoint2DInt& operator+=(const wxPoint2DInt& pt) ;
 388         wxPoint2DInt& operator-=(const wxPoint2DInt& pt) ;
 389         wxPoint2DInt& operator*=(const wxPoint2DInt& pt) ;
 390         wxPoint2DInt& operator*=(wxDouble n) ;
 391         wxPoint2DInt& operator*=(wxInt32 n) ;
 392         wxPoint2DInt& operator/=(const wxPoint2DInt& pt) ;
 393         wxPoint2DInt& operator/=(wxDouble n) ;
 394         wxPoint2DInt& operator/=(wxInt32 n) ;
 395         operator wxPoint() const ;
 396         bool operator==(const wxPoint2DInt& pt) const ;
 397         bool operator!=(const wxPoint2DInt& pt) const ;
 398
 399         void WriteTo( wxDataOutputStream &stream ) const ;
 400         void ReadFrom( wxDataInputStream &stream ) ;
 401
 402         wxInt32 m_x ;
 403         wxInt32 m_y ;
 404 } ;
 405
 406 wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2) ;
 407 wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2) ;
 408 wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2) ;
 409 wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt) ;
 410 wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt) ;
 411 wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n) ;
 412 wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n) ;
 413 wxPoint2DInt operator/(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2) ;
 414 wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n) ;
 415 wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n) ;
 416
 417 inline wxPoint2DInt::wxPoint2DInt()
 418 {
 419     m_x = 0 ;
 420     m_y = 0 ;
 421 }
 422
 423 inline wxPoint2DInt::wxPoint2DInt( wxInt32 x , wxInt32 y )
 424 {
 425     m_x = x ;
 426     m_y = y ;
 427 }
 428
 429 inline wxPoint2DInt::wxPoint2DInt( const wxPoint2DInt &pt )
 430 {
 431     m_x = pt.m_x ;
 432     m_y = pt.m_y ;
 433 }
 434
 435 inline wxPoint2DInt::wxPoint2DInt( const wxPoint &pt )
 436 {
 437     m_x = pt.x ;
 438     m_y = pt.y ;
 439 }
 440
 441 inline void wxPoint2DInt::GetFloor( wxInt32 *x , wxInt32 *y )
 442 {
 443     *x = (wxInt32) floor( m_x ) ;
 444     *y = (wxInt32) floor( m_y ) ;
 445 }
 446
 447 inline void wxPoint2DInt::GetRounded( wxInt32 *x , wxInt32 *y )
 448 {
 449     *x = (wxInt32) floor( m_x + 0.5 ) ;
 450     *y = (wxInt32) floor( m_y + 0.5) ;
 451 }
 452
 453 inline wxDouble wxPoint2DInt::GetVectorLength()
 454 {
 455     return sqrt( (m_x)*(m_x) + (m_y)*(m_y) ) ;
 456 }
 457
 458 inline void wxPoint2DInt::SetVectorLength( wxDouble length )
 459 {
 460     wxDouble before = GetVectorLength() ;
 461     m_x = (wxInt32)(m_x * length / before) ;
 462     m_y = (wxInt32)(m_y * length / before) ;
 463 }
 464
 465 inline void wxPoint2DInt::Normalize()
 466 {
 467     SetVectorLength( 1 ) ;
 468 }
 469
 470 inline wxDouble wxPoint2DInt::GetDistance( const wxPoint2DInt &pt ) const
 471 {
 472     return sqrt( GetDistanceSquare( pt ) );
 473 }
 474
 475 inline wxDouble wxPoint2DInt::GetDistanceSquare( const wxPoint2DInt &pt ) const
 476 {
 477     return ( (pt.m_x-m_x)*(pt.m_x-m_x) + (pt.m_y-m_y)*(pt.m_y-m_y) ) ;
 478 }
 479
 480 inline wxInt32 wxPoint2DInt::GetDotProduct( const wxPoint2DInt &vec ) const
 481 {
 482     return ( m_x * vec.m_x + m_y * vec.m_y ) ;
 483 }
 484
 485 inline wxInt32 wxPoint2DInt::GetCrossProduct( const wxPoint2DInt &vec ) const
 486 {
 487     return ( m_x * vec.m_y - vec.m_x * m_y ) ;
 488 }
 489
 490 inline wxPoint2DInt::operator wxPoint() const
 491 {
 492     return wxPoint( m_x, m_y);
 493 }
 494
 495 inline wxPoint2DInt wxPoint2DInt::operator-()
 496 {
 497     return wxPoint2DInt( -m_x, -m_y);
 498 }
 499
 500 inline wxPoint2DInt& wxPoint2DInt::operator=(const wxPoint2DInt& pt)
 501 {
 502     m_x = pt.m_x ;
 503     m_y = pt.m_y;
 504     return *this ;
 505 }
 506
 507 inline wxPoint2DInt& wxPoint2DInt::operator+=(const wxPoint2DInt& pt)
 508 {
 509     m_x = m_x + pt.m_x ;
 510     m_y = m_y + pt.m_y;
 511     return *this ;
 512 }
 513
 514 inline wxPoint2DInt& wxPoint2DInt::operator-=(const wxPoint2DInt& pt)
 515 {
 516     m_x = m_x - pt.m_x ;
 517     m_y = m_y - pt.m_y;
 518     return *this ;
 519 }
 520
 521 inline wxPoint2DInt& wxPoint2DInt::operator*=(const wxPoint2DInt& pt)
 522 {
 523     m_x = m_x + pt.m_x ;
 524     m_y = m_y + pt.m_y;
 525     return *this ;
 526 }
 527
 528 inline wxPoint2DInt& wxPoint2DInt::operator/=(const wxPoint2DInt& pt)
 529 {
 530     m_x = m_x - pt.m_x ;
 531     m_y = m_y - pt.m_y;
 532     return *this ;
 533 }
 534
 535 inline bool wxPoint2DInt::operator==(const wxPoint2DInt& pt) const
 536 {
 537     return m_x == pt.m_x && m_y == pt.m_y;
 538 }
 539
 540 inline bool wxPoint2DInt::operator!=(const wxPoint2DInt& pt) const
 541 {
 542     return m_x != pt.m_x || m_y != pt.m_y;
 543 }
 544
 545 inline wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 546 {
 547     return wxPoint2DInt( pt1.m_x + pt2.m_x , pt1.m_y + pt2.m_y ) ;
 548 }
 549
 550 inline wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 551 {
 552     return wxPoint2DInt( pt1.m_x - pt2.m_x , pt1.m_y - pt2.m_y ) ;
 553 }
 554
 555
 556 inline wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 557 {
 558     return wxPoint2DInt( pt1.m_x * pt2.m_x , pt1.m_y * pt2.m_y ) ;
 559 }
 560
 561 inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt)
 562 {
 563     return wxPoint2DInt( pt.m_x * n , pt.m_y * n ) ;
 564 }
 565
 566 inline wxPoint2DInt operator*(wxDouble n , const wxPoint2DInt& pt)
 567 {
 568     return wxPoint2DInt( pt.m_x * n , pt.m_y * n ) ;
 569 }
 570
 571 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n)
 572 {
 573     return wxPoint2DInt( pt.m_x * n , pt.m_y * n ) ;
 574 }
 575
 576 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxDouble n)
 577 {
 578     return wxPoint2DInt( pt.m_x * n , pt.m_y * n ) ;
 579 }
 580
 581 inline wxPoint2DInt operator/(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 582 {
 583     return wxPoint2DInt( pt1.m_x / pt2.m_x , pt1.m_y / pt2.m_y ) ;
 584 }
 585
 586 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n)
 587 {
 588     return wxPoint2DInt( pt.m_x / n , pt.m_y / n ) ;
 589 }
 590
 591 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxDouble n)
 592 {
 593     return wxPoint2DInt( pt.m_x / n , pt.m_y / n ) ;
 594 }
 595
 596 // wxRect2Ds are a axis-aligned rectangles, each side of the rect is parallel to the x- or m_y- axis. The rectangle is either defined by the
 597 // top left and bottom right corner, or by the top left corner and size. A point is contained within the rectangle if
 598 // left <= x < right  and top <= m_y < bottom , thus it is a half open interval.
 599
 600 class WXDLLEXPORT wxRect2DInt
 601 {
 602 public:
 603        wxRect2DInt() { m_x = m_y = m_width = m_height = 0 ; }
 604        wxRect2DInt(wxInt32 x, wxInt32 y, wxInt32 w, wxInt32 h) { m_x = x ; m_y = y ; m_width = w ;  m_height = h ; }
 605        wxRect2DInt(const wxPoint2DInt& topLeft, const wxPoint2DInt& bottomRight);
 606        wxRect2DInt(const wxPoint2DInt& pos, const wxSize& size);
 607        wxRect2DInt(const wxRect2DInt& rect);
 608
 609         // single attribute accessors
 610
 611       inline wxPoint2DInt GetPosition() { return wxPoint2DInt(m_x, m_y); }
 612        inline wxSize GetSize() { return wxSize(m_width, m_height); }
 613
 614         // for the edge and corner accessors there are two setters conterparts, the Set.. functions keep the other corners at their
 615         // position whenever sensible, the Move.. functions keep the size of the rect and move the other corners apropriately
 616
 617       inline wxInt32 GetLeft() const { return m_x; }
 618        inline void SetLeft( wxInt32 n ) { m_width += m_x - n ; m_x = n ; }
 619        inline void MoveLeftTo( wxInt32 n ) { m_x = n ; }
 620        inline wxInt32 GetTop() const { return m_y; }
 621        inline void SetTop( wxInt32 n ) { m_height += m_y - n ; m_y = n ; }
 622        inline void MoveTopTo( wxInt32 n ) { m_y = n ; }
 623        inline wxInt32 GetBottom() const { return m_y + m_height; }
 624        inline void SetBottom( wxInt32 n ) { m_height += n - (m_y+m_height) ;}
 625        inline void MoveBottomTo( wxInt32 n ) { m_y = n - m_height ; }
 626        inline wxInt32 GetRight() const { return m_x + m_width; }
 627        inline void SetRight( wxInt32 n ) { m_width += n - (m_x+m_width)  ; }
 628        inline void MoveRightTo( wxInt32 n ) { m_x = n - m_width ; }
 629
 630         inline wxPoint2DInt GetLeftTop() const { return wxPoint2DInt( m_x , m_y ) ; }
 631         inline void SetLeftTop( const wxPoint2DInt &pt ) { m_width += m_x - pt.m_x ; m_height += m_y - pt.m_y ; m_x = pt.m_x ; m_y = pt.m_y ; }
 632         inline void MoveLeftTopTo( const wxPoint2DInt &pt ) { m_x = pt.m_x ; m_y = pt.m_y ; }
 633         inline wxPoint2DInt GetLeftBottom() const { return wxPoint2DInt( m_x , m_y + m_height ) ; }
 634         inline void SetLeftBottom( const wxPoint2DInt &pt ) { m_width += m_x - pt.m_x ; m_height += pt.m_y - (m_y+m_height)  ; m_x = pt.m_x ; }
 635         inline void MoveLeftBottomTo( const wxPoint2DInt &pt ) { m_x = pt.m_x ; m_y = pt.m_y - m_height; }
 636         inline wxPoint2DInt GetRightTop() const { return wxPoint2DInt( m_x+m_width , m_y ) ; }
 637         inline void SetRightTop( const wxPoint2DInt &pt ) { m_width += pt.m_x - ( m_x + m_width ) ; m_height += m_y - pt.m_y ; m_y = pt.m_y ; }
 638         inline void MoveRightTopTo( const wxPoint2DInt &pt ) { m_x = pt.m_x - m_width ; m_y = pt.m_y ; }
 639         inline wxPoint2DInt GetRightBottom() const { return wxPoint2DInt( m_x+m_width , m_y + m_height ) ; }
 640         inline void SetRightBottom( const wxPoint2DInt &pt ) { m_width += pt.m_x - ( m_x + m_width ) ; m_height += pt.m_y - (m_y+m_height) ;}
 641         inline void MoveRightBottomTo( const wxPoint2DInt &pt ) { m_x = pt.m_x - m_width ; m_y = pt.m_y - m_height; }
 642         inline wxPoint2DInt GetCentre() const { return wxPoint2DInt( m_x+m_width/2 , m_y+m_height/2 ) ; }
 643         inline void SetCentre( const wxPoint2DInt &pt ) { MoveCentreTo( pt ) ; }    // since this is impossible without moving...
 644         inline void MoveCentreTo( const wxPoint2DInt &pt ) { m_x += pt.m_x - (m_x+m_width/2) , m_y += pt.m_y -(m_y+m_height/2) ; }
 645         inline wxOutCode GetOutcode( const wxPoint2DInt &pt ) const
 646             { return (wxOutCode) (( ( pt.m_x < m_x ) ? wxOutLeft : 0 ) +
 647                      ( ( pt.m_x >= m_x + m_width ) ? wxOutRight : 0 ) +
 648                      ( ( pt.m_y < m_y ) ? wxOutTop : 0 )  +
 649                      ( ( pt.m_y >= m_y + m_height ) ? wxOutBottom : 0 )) ; }
 650         inline bool Contains( const wxPoint2DInt &pt ) const
 651             { return  GetOutcode( pt ) == wxInside ; }
 652         inline bool Contains( const wxRect2DInt &rect ) const
 653             { return ( ( ( m_x <= rect.m_x ) && ( rect.m_x + rect.m_width <= m_x + m_width ) ) &&
 654                 ( ( m_y <= rect.m_y ) && ( rect.m_y + rect.m_height <= m_y + m_height ) ) ) ; }
 655         inline bool IsEmpty() const
 656             { return ( m_width <= 0 || m_height <= 0 ) ; }
 657         inline bool HaveEqualSize( const wxRect2DInt &rect ) const
 658             { return ( rect.m_width == m_width && rect.m_height == m_height ) ; }
 659
 660         inline void Inset( wxInt32 x , wxInt32 y ) { m_x += x ; m_y += y ; m_width -= 2 * x ; m_height -= 2 * y ; }
 661         inline void Inset( wxInt32 left , wxInt32 top ,wxInt32 right , wxInt32 bottom  )
 662             { m_x += left ; m_y += top ; m_width -= left + right ; m_height -= top + bottom ;}
 663         inline void Offset( const wxPoint2DInt &pt ) { m_x += pt.m_x ; m_y += pt.m_y ; }
 664         void ConstrainTo( const wxRect2DInt &rect ) ;
 665         inline wxPoint2DInt Interpolate( wxInt32 widthfactor , wxInt32 heightfactor ) { return wxPoint2DInt( m_x + m_width * widthfactor , m_y + m_height * heightfactor ) ; }
 666
 667         static void Intersect( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest ) ;
 668         inline void Intersect( const wxRect2DInt &otherRect ) { Intersect( *this , otherRect , this ) ; }
 669         inline wxRect2DInt CreateIntersection( const wxRect2DInt &otherRect ) const { wxRect2DInt result ; Intersect( *this , otherRect , &result) ; return result ; }
 670         bool Intersects( const wxRect2DInt &rect ) const ;
 671
 672         static void Union( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest ) ;
 673         void Union( const wxRect2DInt &otherRect )  { Union( *this , otherRect , this ) ; }
 674         void Union( const wxPoint2DInt &pt ) ;
 675         inline wxRect2DInt CreateUnion( const wxRect2DInt &otherRect ) const { wxRect2DInt result ; Union( *this , otherRect , &result) ; return result ; }
 676
 677         inline void Scale( wxInt32 f ) { m_x *= f ; m_y *= f ; m_width *= f ; m_height *= f ;}
 678         inline void Scale( wxInt32 num , wxInt32 denum )
 679             { m_x *= ((wxInt32)num)/((wxInt32)denum) ; m_y *= ((wxInt32)num)/((wxInt32)denum) ;
 680                 m_width *= ((wxInt32)num)/((wxInt32)denum) ; m_height *= ((wxInt32)num)/((wxInt32)denum) ;}
 681
 682        wxRect2DInt& operator = (const wxRect2DInt& rect);
 683        bool operator == (const wxRect2DInt& rect);
 684        bool operator != (const wxRect2DInt& rect);
 685
 686         void WriteTo( wxDataOutputStream &stream ) const ;
 687         void ReadFrom( wxDataInputStream &stream ) ;
 688
 689        wxInt32 m_x ;
 690         wxInt32 m_y ;
 691         wxInt32 m_width;
 692         wxInt32 m_height;
 693 };
 694
 695 inline wxRect2DInt::wxRect2DInt( const wxRect2DInt &r )
 696 {
 697     m_x = r.m_x ;
 698     m_y = r.m_y ;
 699     m_width = r.m_width ;
 700     m_height = r.m_height ;
 701 }
 702
 703 inline wxRect2DInt::wxRect2DInt( const wxPoint2DInt &a , const wxPoint2DInt &b)
 704 {
 705     m_x = wxMin( a.m_x , b.m_x ) ;
 706     m_y = wxMin( a.m_y , b.m_y ) ;
 707     m_width = abs( a.m_x - b.m_x ) ;
 708     m_height = abs( a.m_y - b.m_y ) ;
 709 }
 710
 711 class wxTransform2D
 712 {
 713 public :
 714     virtual void                    Transform( wxPoint2DInt* pt )const  = 0 ;
 715     virtual void                    Transform( wxRect2DInt* r ) const ;
 716     virtual wxPoint2DInt    Transform( const wxPoint2DInt &pt ) const ;
 717     virtual wxRect2DInt        Transform( const wxRect2DInt &r ) const  ;
 718
 719     virtual void                    InverseTransform( wxPoint2DInt* pt ) const  = 0;
 720     virtual void                    InverseTransform( wxRect2DInt* r ) const  ;
 721     virtual wxPoint2DInt    InverseTransform( const wxPoint2DInt &pt ) const  ;
 722     virtual wxRect2DInt        InverseTransform( const wxRect2DInt &r ) const  ;
 723 } ;
 724
 725 inline void    wxTransform2D::Transform( wxRect2DInt* r ) const
 726 { wxPoint2DInt a = r->GetLeftTop() , b = r->GetRightBottom() ; Transform( &a ) ; Transform( &b ) ; *r = wxRect2DInt( a , b ) ; }
 727
 728 inline wxPoint2DInt    wxTransform2D::Transform( const wxPoint2DInt &pt ) const
 729 { wxPoint2DInt res = pt ; Transform( &res ) ; return res ; }
 730
 731 inline wxRect2DInt     wxTransform2D::Transform( const wxRect2DInt &r ) const
 732 { wxRect2DInt res = r ; Transform( &res ) ; return res ; }
 733
 734 inline void    wxTransform2D::InverseTransform( wxRect2DInt* r ) const
 735 { wxPoint2DInt a = r->GetLeftTop() , b = r->GetRightBottom() ; InverseTransform( &a ) ; InverseTransform( &b ) ; *r = wxRect2DInt( a , b ) ; }
 736
 737 inline wxPoint2DInt    wxTransform2D::InverseTransform( const wxPoint2DInt &pt ) const
 738 { wxPoint2DInt res = pt ; InverseTransform( &res ) ; return res ; }
 739
 740 inline wxRect2DInt     wxTransform2D::InverseTransform( const wxRect2DInt &r ) const
 741 { wxRect2DInt res = r ; InverseTransform( &res ) ; return res ; }
 742
 743
 744 #endif // wxUSE_GEOMETRY
 745
 746 #endif // _WX_GEOMETRY_H_