include/wx/geometry.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/geometry.h
   3 // Purpose:     Common Geometry Classes
   4 // Author:      Stefan Csomor
   5 // Modified by:
   6 // Created:     08/05/99
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1999 Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_GEOMETRY_H_
  13 #define _WX_GEOMETRY_H_
  14
  15 #include "wx/defs.h"
  16
  17 #if wxUSE_GEOMETRY
  18
  19 #include "wx/utils.h"
  20 #include "wx/gdicmn.h"
  21 #include "wx/math.h"
  22
  23 class WXDLLIMPEXP_FWD_BASE wxDataInputStream;
  24 class WXDLLIMPEXP_FWD_BASE wxDataOutputStream;
  25
  26 // clipping from Cohen-Sutherland
  27
  28 enum wxOutCode
  29 {
  30     wxInside = 0x00 ,
  31     wxOutLeft = 0x01 ,
  32     wxOutRight = 0x02 ,
  33     wxOutTop = 0x08 ,
  34     wxOutBottom = 0x04
  35 };
  36
  37 class WXDLLIMPEXP_CORE wxPoint2DInt
  38 {
  39 public :
  40     inline wxPoint2DInt();
  41     inline wxPoint2DInt( wxInt32 x , wxInt32 y );
  42     inline wxPoint2DInt( const wxPoint2DInt &pt );
  43     inline wxPoint2DInt( const wxPoint &pt );
  44
  45     // noops for this class, just return the coords
  46     inline void GetFloor( wxInt32 *x , wxInt32 *y ) const;
  47     inline void GetRounded( wxInt32 *x , wxInt32 *y ) const;
  48
  49     inline wxDouble GetVectorLength() const;
  50            wxDouble GetVectorAngle() const;
  51     inline void SetVectorLength( wxDouble length );
  52            void SetVectorAngle( wxDouble degrees );
  53            void SetPolarCoordinates( wxInt32 angle , wxInt32 length );
  54     // set the vector length to 1.0, preserving the angle
  55     inline void Normalize();
  56
  57     inline wxDouble GetDistance( const wxPoint2DInt &pt ) const;
  58     inline wxDouble GetDistanceSquare( const wxPoint2DInt &pt ) const;
  59     inline wxInt32 GetDotProduct( const wxPoint2DInt &vec ) const;
  60     inline wxInt32 GetCrossProduct( const wxPoint2DInt &vec ) const;
  61
  62     // the reflection of this point
  63     inline wxPoint2DInt operator-();
  64
  65     inline wxPoint2DInt& operator=(const wxPoint2DInt& pt);
  66     inline wxPoint2DInt& operator+=(const wxPoint2DInt& pt);
  67     inline wxPoint2DInt& operator-=(const wxPoint2DInt& pt);
  68     inline wxPoint2DInt& operator*=(const wxPoint2DInt& pt);
  69     inline wxPoint2DInt& operator*=(wxDouble n);
  70     inline wxPoint2DInt& operator*=(wxInt32 n);
  71     inline wxPoint2DInt& operator/=(const wxPoint2DInt& pt);
  72     inline wxPoint2DInt& operator/=(wxDouble n);
  73     inline wxPoint2DInt& operator/=(wxInt32 n);
  74     inline operator wxPoint() const;
  75     inline bool operator==(const wxPoint2DInt& pt) const;
  76     inline bool operator!=(const wxPoint2DInt& pt) const;
  77
  78 #if wxUSE_STREAMS
  79     void WriteTo( wxDataOutputStream &stream ) const;
  80     void ReadFrom( wxDataInputStream &stream );
  81 #endif // wxUSE_STREAMS
  82
  83     wxInt32 m_x;
  84     wxInt32 m_y;
  85 };
  86
  87 inline wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
  88 inline wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
  89 inline wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
  90 inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt);
  91 inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt);
  92 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n);
  93 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n);
  94 inline wxPoint2DInt operator/(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
  95 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n);
  96 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n);
  97
  98 inline wxPoint2DInt::wxPoint2DInt()
  99 {
 100     m_x = 0;
 101     m_y = 0;
 102 }
 103
 104 inline wxPoint2DInt::wxPoint2DInt( wxInt32 x , wxInt32 y )
 105 {
 106     m_x = x;
 107     m_y = y;
 108 }
 109
 110 inline wxPoint2DInt::wxPoint2DInt( const wxPoint2DInt &pt )
 111 {
 112     m_x = pt.m_x;
 113     m_y = pt.m_y;
 114 }
 115
 116 inline wxPoint2DInt::wxPoint2DInt( const wxPoint &pt )
 117 {
 118     m_x = pt.x;
 119     m_y = pt.y;
 120 }
 121
 122 inline void wxPoint2DInt::GetFloor( wxInt32 *x , wxInt32 *y ) const
 123 {
 124     if ( x )
 125         *x = m_x;
 126     if ( y )
 127         *y = m_y;
 128 }
 129
 130 inline void wxPoint2DInt::GetRounded( wxInt32 *x , wxInt32 *y ) const
 131 {
 132     GetFloor(x, y);
 133 }
 134
 135 inline wxDouble wxPoint2DInt::GetVectorLength() const
 136 {
 137     // cast needed MIPSpro compiler under SGI
 138     return sqrt( (double)(m_x)*(m_x) + (m_y)*(m_y) );
 139 }
 140
 141 inline void wxPoint2DInt::SetVectorLength( wxDouble length )
 142 {
 143     wxDouble before = GetVectorLength();
 144     m_x = (wxInt32)(m_x * length / before);
 145     m_y = (wxInt32)(m_y * length / before);
 146 }
 147
 148 inline void wxPoint2DInt::Normalize()
 149 {
 150     SetVectorLength( 1 );
 151 }
 152
 153 inline wxDouble wxPoint2DInt::GetDistance( const wxPoint2DInt &pt ) const
 154 {
 155     return sqrt( GetDistanceSquare( pt ) );
 156 }
 157
 158 inline wxDouble wxPoint2DInt::GetDistanceSquare( const wxPoint2DInt &pt ) const
 159 {
 160     return ( (pt.m_x-m_x)*(pt.m_x-m_x) + (pt.m_y-m_y)*(pt.m_y-m_y) );
 161 }
 162
 163 inline wxInt32 wxPoint2DInt::GetDotProduct( const wxPoint2DInt &vec ) const
 164 {
 165     return ( m_x * vec.m_x + m_y * vec.m_y );
 166 }
 167
 168 inline wxInt32 wxPoint2DInt::GetCrossProduct( const wxPoint2DInt &vec ) const
 169 {
 170     return ( m_x * vec.m_y - vec.m_x * m_y );
 171 }
 172
 173 inline wxPoint2DInt::operator wxPoint() const
 174 {
 175     return wxPoint( m_x, m_y);
 176 }
 177
 178 inline wxPoint2DInt wxPoint2DInt::operator-()
 179 {
 180     return wxPoint2DInt( -m_x, -m_y);
 181 }
 182
 183 inline wxPoint2DInt& wxPoint2DInt::operator=(const wxPoint2DInt& pt)
 184 {
 185     if (this != &pt)
 186     {
 187         m_x = pt.m_x;
 188         m_y = pt.m_y;
 189     }
 190     return *this;
 191 }
 192
 193 inline wxPoint2DInt& wxPoint2DInt::operator+=(const wxPoint2DInt& pt)
 194 {
 195     m_x = m_x + pt.m_x;
 196     m_y = m_y + pt.m_y;
 197     return *this;
 198 }
 199
 200 inline wxPoint2DInt& wxPoint2DInt::operator-=(const wxPoint2DInt& pt)
 201 {
 202     m_x = m_x - pt.m_x;
 203     m_y = m_y - pt.m_y;
 204     return *this;
 205 }
 206
 207 inline wxPoint2DInt& wxPoint2DInt::operator*=(const wxPoint2DInt& pt)
 208 {
 209     m_x = m_x + pt.m_x;
 210     m_y = m_y + pt.m_y;
 211     return *this;
 212 }
 213
 214 inline wxPoint2DInt& wxPoint2DInt::operator/=(const wxPoint2DInt& pt)
 215 {
 216     m_x = m_x - pt.m_x;
 217     m_y = m_y - pt.m_y;
 218     return *this;
 219 }
 220
 221 inline bool wxPoint2DInt::operator==(const wxPoint2DInt& pt) const
 222 {
 223     return m_x == pt.m_x && m_y == pt.m_y;
 224 }
 225
 226 inline bool wxPoint2DInt::operator!=(const wxPoint2DInt& pt) const
 227 {
 228     return m_x != pt.m_x || m_y != pt.m_y;
 229 }
 230
 231 inline wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 232 {
 233     return wxPoint2DInt( pt1.m_x + pt2.m_x , pt1.m_y + pt2.m_y );
 234 }
 235
 236 inline wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 237 {
 238     return wxPoint2DInt( pt1.m_x - pt2.m_x , pt1.m_y - pt2.m_y );
 239 }
 240
 241
 242 inline wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 243 {
 244     return wxPoint2DInt( pt1.m_x * pt2.m_x , pt1.m_y * pt2.m_y );
 245 }
 246
 247 inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt)
 248 {
 249     return wxPoint2DInt( pt.m_x * n , pt.m_y * n );
 250 }
 251
 252 inline wxPoint2DInt operator*(wxDouble n , const wxPoint2DInt& pt)
 253 {
 254     return wxPoint2DInt( (int) (pt.m_x * n) , (int) (pt.m_y * n) );
 255 }
 256
 257 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n)
 258 {
 259     return wxPoint2DInt( pt.m_x * n , pt.m_y * n );
 260 }
 261
 262 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxDouble n)
 263 {
 264     return wxPoint2DInt( (int) (pt.m_x * n) , (int) (pt.m_y * n) );
 265 }
 266
 267 inline wxPoint2DInt operator/(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 268 {
 269     return wxPoint2DInt( pt1.m_x / pt2.m_x , pt1.m_y / pt2.m_y );
 270 }
 271
 272 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n)
 273 {
 274     return wxPoint2DInt( pt.m_x / n , pt.m_y / n );
 275 }
 276
 277 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxDouble n)
 278 {
 279     return wxPoint2DInt( (int) (pt.m_x / n) , (int) (pt.m_y / n) );
 280 }
 281
 282 // wxPoint2Ds represent a point or a vector in a 2d coordinate system
 283
 284 class WXDLLIMPEXP_CORE wxPoint2DDouble
 285 {
 286 public :
 287     inline wxPoint2DDouble();
 288     inline wxPoint2DDouble( wxDouble x , wxDouble y );
 289     inline wxPoint2DDouble( const wxPoint2DDouble &pt );
 290     wxPoint2DDouble( const wxPoint2DInt &pt )
 291         { m_x = (wxDouble) pt.m_x ; m_y = (wxDouble) pt.m_y ; }
 292     wxPoint2DDouble( const wxPoint &pt )
 293         { m_x = (wxDouble) pt.x ; m_y = (wxDouble) pt.y ; }
 294
 295     // two different conversions to integers, floor and rounding
 296     inline void GetFloor( wxInt32 *x , wxInt32 *y ) const;
 297     inline void GetRounded( wxInt32 *x , wxInt32 *y ) const;
 298
 299     inline wxDouble GetVectorLength() const;
 300      wxDouble GetVectorAngle() const ;
 301     void SetVectorLength( wxDouble length );
 302     void SetVectorAngle( wxDouble degrees );
 303     void SetPolarCoordinates( wxDouble angle , wxDouble length );
 304     // set the vector length to 1.0, preserving the angle
 305     void Normalize();
 306
 307     inline wxDouble GetDistance( const wxPoint2DDouble &pt ) const;
 308     inline wxDouble GetDistanceSquare( const wxPoint2DDouble &pt ) const;
 309     inline wxDouble GetDotProduct( const wxPoint2DDouble &vec ) const;
 310     inline wxDouble GetCrossProduct( const wxPoint2DDouble &vec ) const;
 311
 312     // the reflection of this point
 313     inline wxPoint2DDouble operator-();
 314
 315     inline wxPoint2DDouble& operator=(const wxPoint2DDouble& pt);
 316     inline wxPoint2DDouble& operator+=(const wxPoint2DDouble& pt);
 317     inline wxPoint2DDouble& operator-=(const wxPoint2DDouble& pt);
 318     inline wxPoint2DDouble& operator*=(const wxPoint2DDouble& pt);
 319     inline wxPoint2DDouble& operator*=(wxDouble n);
 320     inline wxPoint2DDouble& operator*=(wxInt32 n);
 321     inline wxPoint2DDouble& operator/=(const wxPoint2DDouble& pt);
 322     inline wxPoint2DDouble& operator/=(wxDouble n);
 323     inline wxPoint2DDouble& operator/=(wxInt32 n);
 324
 325     inline bool operator==(const wxPoint2DDouble& pt) const;
 326     inline bool operator!=(const wxPoint2DDouble& pt) const;
 327
 328     wxDouble m_x;
 329     wxDouble m_y;
 330 };
 331
 332 inline wxPoint2DDouble operator+(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 333 inline wxPoint2DDouble operator-(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 334 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 335 inline wxPoint2DDouble operator*(wxDouble n , const wxPoint2DDouble& pt);
 336 inline wxPoint2DDouble operator*(wxInt32 n , const wxPoint2DDouble& pt);
 337 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxDouble n);
 338 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxInt32 n);
 339 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 340 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxDouble n);
 341 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxInt32 n);
 342
 343 inline wxPoint2DDouble::wxPoint2DDouble()
 344 {
 345     m_x = 0.0;
 346     m_y = 0.0;
 347 }
 348
 349 inline wxPoint2DDouble::wxPoint2DDouble( wxDouble x , wxDouble y )
 350 {
 351     m_x = x;
 352     m_y = y;
 353 }
 354
 355 inline wxPoint2DDouble::wxPoint2DDouble( const wxPoint2DDouble &pt )
 356 {
 357     m_x = pt.m_x;
 358     m_y = pt.m_y;
 359 }
 360
 361 inline void wxPoint2DDouble::GetFloor( wxInt32 *x , wxInt32 *y ) const
 362 {
 363     *x = (wxInt32) floor( m_x );
 364     *y = (wxInt32) floor( m_y );
 365 }
 366
 367 inline void wxPoint2DDouble::GetRounded( wxInt32 *x , wxInt32 *y ) const
 368 {
 369     *x = (wxInt32) floor( m_x + 0.5 );
 370     *y = (wxInt32) floor( m_y + 0.5);
 371 }
 372
 373 inline wxDouble wxPoint2DDouble::GetVectorLength() const
 374 {
 375     return sqrt( (m_x)*(m_x) + (m_y)*(m_y) ) ;
 376 }
 377
 378 inline void wxPoint2DDouble::SetVectorLength( wxDouble length )
 379 {
 380     wxDouble before = GetVectorLength() ;
 381     m_x = (m_x * length / before) ;
 382     m_y = (m_y * length / before) ;
 383 }
 384
 385 inline void wxPoint2DDouble::Normalize()
 386 {
 387     SetVectorLength( 1 );
 388 }
 389
 390 inline wxDouble wxPoint2DDouble::GetDistance( const wxPoint2DDouble &pt ) const
 391 {
 392     return sqrt( GetDistanceSquare( pt ) );
 393 }
 394
 395 inline wxDouble wxPoint2DDouble::GetDistanceSquare( const wxPoint2DDouble &pt ) const
 396 {
 397     return ( (pt.m_x-m_x)*(pt.m_x-m_x) + (pt.m_y-m_y)*(pt.m_y-m_y) );
 398 }
 399
 400 inline wxDouble wxPoint2DDouble::GetDotProduct( const wxPoint2DDouble &vec ) const
 401 {
 402     return ( m_x * vec.m_x + m_y * vec.m_y );
 403 }
 404
 405 inline wxDouble wxPoint2DDouble::GetCrossProduct( const wxPoint2DDouble &vec ) const
 406 {
 407     return ( m_x * vec.m_y - vec.m_x * m_y );
 408 }
 409
 410 inline wxPoint2DDouble wxPoint2DDouble::operator-()
 411 {
 412     return wxPoint2DDouble( -m_x, -m_y);
 413 }
 414
 415 inline wxPoint2DDouble& wxPoint2DDouble::operator=(const wxPoint2DDouble& pt)
 416 {
 417     if (this != &pt)
 418     {
 419         m_x = pt.m_x;
 420         m_y = pt.m_y;
 421     }
 422     return *this;
 423 }
 424
 425 inline wxPoint2DDouble& wxPoint2DDouble::operator+=(const wxPoint2DDouble& pt)
 426 {
 427     m_x = m_x + pt.m_x;
 428     m_y = m_y + pt.m_y;
 429     return *this;
 430 }
 431
 432 inline wxPoint2DDouble& wxPoint2DDouble::operator-=(const wxPoint2DDouble& pt)
 433 {
 434     m_x = m_x - pt.m_x;
 435     m_y = m_y - pt.m_y;
 436     return *this;
 437 }
 438
 439 inline wxPoint2DDouble& wxPoint2DDouble::operator*=(const wxPoint2DDouble& pt)
 440 {
 441     m_x = m_x * pt.m_x;
 442     m_y = m_y * pt.m_y;
 443     return *this;
 444 }
 445
 446 inline wxPoint2DDouble& wxPoint2DDouble::operator/=(const wxPoint2DDouble& pt)
 447 {
 448     m_x = m_x / pt.m_x;
 449     m_y = m_y / pt.m_y;
 450     return *this;
 451 }
 452
 453 inline bool wxPoint2DDouble::operator==(const wxPoint2DDouble& pt) const
 454 {
 455     return wxIsSameDouble(m_x, pt.m_x) && wxIsSameDouble(m_y, pt.m_y);
 456 }
 457
 458 inline bool wxPoint2DDouble::operator!=(const wxPoint2DDouble& pt) const
 459 {
 460     return !(*this == pt);
 461 }
 462
 463 inline wxPoint2DDouble operator+(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 464 {
 465     return wxPoint2DDouble( pt1.m_x + pt2.m_x , pt1.m_y + pt2.m_y );
 466 }
 467
 468 inline wxPoint2DDouble operator-(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 469 {
 470     return wxPoint2DDouble( pt1.m_x - pt2.m_x , pt1.m_y - pt2.m_y );
 471 }
 472
 473
 474 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 475 {
 476     return wxPoint2DDouble( pt1.m_x * pt2.m_x , pt1.m_y * pt2.m_y );
 477 }
 478
 479 inline wxPoint2DDouble operator*(wxDouble n , const wxPoint2DDouble& pt)
 480 {
 481     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 482 }
 483
 484 inline wxPoint2DDouble operator*(wxInt32 n , const wxPoint2DDouble& pt)
 485 {
 486     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 487 }
 488
 489 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxDouble n)
 490 {
 491     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 492 }
 493
 494 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxInt32 n)
 495 {
 496     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 497 }
 498
 499 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 500 {
 501     return wxPoint2DDouble( pt1.m_x / pt2.m_x , pt1.m_y / pt2.m_y );
 502 }
 503
 504 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxDouble n)
 505 {
 506     return wxPoint2DDouble( pt.m_x / n , pt.m_y / n );
 507 }
 508
 509 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxInt32 n)
 510 {
 511     return wxPoint2DDouble( pt.m_x / n , pt.m_y / n );
 512 }
 513
 514 // 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
 515 // top left and bottom right corner, or by the top left corner and size. A point is contained within the rectangle if
 516 // left <= x < right  and top <= m_y < bottom , thus it is a half open interval.
 517
 518 class WXDLLIMPEXP_CORE wxRect2DDouble
 519 {
 520 public:
 521     wxRect2DDouble()
 522         { m_x = m_y = m_width = m_height = 0; }
 523     wxRect2DDouble(wxDouble x, wxDouble y, wxDouble w, wxDouble h)
 524         { m_x = x; m_y = y; m_width = w;  m_height = h; }
 525 /*
 526     wxRect2DDouble(const wxPoint2DDouble& topLeft, const wxPoint2DDouble& bottomRight);
 527     wxRect2DDouble(const wxPoint2DDouble& pos, const wxSize& size);
 528     wxRect2DDouble(const wxRect2DDouble& rect);
 529 */
 530         // single attribute accessors
 531
 532     inline wxPoint2DDouble GetPosition()
 533         { return wxPoint2DDouble(m_x, m_y); }
 534     inline wxSize GetSize()
 535         { return wxSize((int) m_width, (int) m_height); }
 536
 537     // for the edge and corner accessors there are two setters conterparts, the Set.. functions keep the other corners at their
 538         // position whenever sensible, the Move.. functions keep the size of the rect and move the other corners apropriately
 539
 540     inline wxDouble GetLeft() const { return m_x; }
 541     inline void SetLeft( wxDouble n ) { m_width += m_x - n; m_x = n; }
 542     inline void MoveLeftTo( wxDouble n ) { m_x = n; }
 543     inline wxDouble GetTop() const { return m_y; }
 544     inline void SetTop( wxDouble n ) { m_height += m_y - n; m_y = n; }
 545     inline void MoveTopTo( wxDouble n ) { m_y = n; }
 546     inline wxDouble GetBottom() const { return m_y + m_height; }
 547     inline void SetBottom( wxDouble n ) { m_height += n - (m_y+m_height);}
 548     inline void MoveBottomTo( wxDouble n ) { m_y = n - m_height; }
 549     inline wxDouble GetRight() const { return m_x + m_width; }
 550     inline void SetRight( wxDouble n ) { m_width += n - (m_x+m_width) ; }
 551     inline void MoveRightTo( wxDouble n ) { m_x = n - m_width; }
 552
 553     inline wxPoint2DDouble GetLeftTop() const
 554         { return wxPoint2DDouble( m_x , m_y ); }
 555     inline void SetLeftTop( const wxPoint2DDouble &pt )
 556         { m_width += m_x - pt.m_x; m_height += m_y - pt.m_y; m_x = pt.m_x; m_y = pt.m_y; }
 557     inline void MoveLeftTopTo( const wxPoint2DDouble &pt )
 558         { m_x = pt.m_x; m_y = pt.m_y; }
 559     inline wxPoint2DDouble GetLeftBottom() const
 560         { return wxPoint2DDouble( m_x , m_y + m_height ); }
 561     inline void SetLeftBottom( const wxPoint2DDouble &pt )
 562         { m_width += m_x - pt.m_x; m_height += pt.m_y - (m_y+m_height) ; m_x = pt.m_x; }
 563     inline void MoveLeftBottomTo( const wxPoint2DDouble &pt )
 564         { m_x = pt.m_x; m_y = pt.m_y - m_height; }
 565     inline wxPoint2DDouble GetRightTop() const
 566         { return wxPoint2DDouble( m_x+m_width , m_y ); }
 567     inline void SetRightTop( const wxPoint2DDouble &pt )
 568         { m_width += pt.m_x - ( m_x + m_width ); m_height += m_y - pt.m_y; m_y = pt.m_y; }
 569     inline void MoveRightTopTo( const wxPoint2DDouble &pt )
 570         { m_x = pt.m_x - m_width; m_y = pt.m_y; }
 571     inline wxPoint2DDouble GetRightBottom() const
 572         { return wxPoint2DDouble( m_x+m_width , m_y + m_height ); }
 573     inline void SetRightBottom( const wxPoint2DDouble &pt )
 574         { m_width += pt.m_x - ( m_x + m_width ); m_height += pt.m_y - (m_y+m_height);}
 575     inline void MoveRightBottomTo( const wxPoint2DDouble &pt )
 576         { m_x = pt.m_x - m_width; m_y = pt.m_y - m_height; }
 577     inline wxPoint2DDouble GetCentre() const
 578         { return wxPoint2DDouble( m_x+m_width/2 , m_y+m_height/2 ); }
 579     inline void SetCentre( const wxPoint2DDouble &pt )
 580         { MoveCentreTo( pt ); }    // since this is impossible without moving...
 581     inline void MoveCentreTo( const wxPoint2DDouble &pt )
 582         { m_x += pt.m_x - (m_x+m_width/2) , m_y += pt.m_y -(m_y+m_height/2); }
 583     inline wxOutCode GetOutCode( const wxPoint2DDouble &pt ) const
 584         { return (wxOutCode) (( ( pt.m_x < m_x ) ? wxOutLeft : 0 ) +
 585                      ( ( pt.m_x > m_x + m_width ) ? wxOutRight : 0 ) +
 586                      ( ( pt.m_y < m_y ) ? wxOutTop : 0 )  +
 587                      ( ( pt.m_y > m_y + m_height ) ? wxOutBottom : 0 )); }
 588     inline wxOutCode GetOutcode(const wxPoint2DDouble &pt) const
 589         { return GetOutCode(pt) ; }
 590     inline bool Contains( const wxPoint2DDouble &pt ) const
 591         { return  GetOutCode( pt ) == wxInside; }
 592     inline bool Contains( const wxRect2DDouble &rect ) const
 593         { return ( ( ( m_x <= rect.m_x ) && ( rect.m_x + rect.m_width <= m_x + m_width ) ) &&
 594                 ( ( m_y <= rect.m_y ) && ( rect.m_y + rect.m_height <= m_y + m_height ) ) ); }
 595     inline bool IsEmpty() const
 596         { return m_width <= 0 || m_height <= 0; }
 597     inline bool HaveEqualSize( const wxRect2DDouble &rect ) const
 598         { return wxIsSameDouble(rect.m_width, m_width) && wxIsSameDouble(rect.m_height, m_height); }
 599
 600     inline void Inset( wxDouble x , wxDouble y )
 601         { m_x += x; m_y += y; m_width -= 2 * x; m_height -= 2 * y; }
 602     inline void Inset( wxDouble left , wxDouble top ,wxDouble right , wxDouble bottom  )
 603         { m_x += left; m_y += top; m_width -= left + right; m_height -= top + bottom;}
 604     inline void Offset( const wxPoint2DDouble &pt )
 605         { m_x += pt.m_x; m_y += pt.m_y; }
 606
 607     void ConstrainTo( const wxRect2DDouble &rect );
 608
 609     inline wxPoint2DDouble Interpolate( wxInt32 widthfactor , wxInt32 heightfactor )
 610         { return wxPoint2DDouble( m_x + m_width * widthfactor , m_y + m_height * heightfactor ); }
 611
 612     static void Intersect( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest );
 613     inline void Intersect( const wxRect2DDouble &otherRect )
 614         { Intersect( *this , otherRect , this ); }
 615     inline wxRect2DDouble CreateIntersection( const wxRect2DDouble &otherRect ) const
 616         { wxRect2DDouble result; Intersect( *this , otherRect , &result); return result; }
 617     bool Intersects( const wxRect2DDouble &rect ) const;
 618
 619     static void Union( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest );
 620     void Union( const wxRect2DDouble &otherRect )
 621         { Union( *this , otherRect , this ); }
 622     void Union( const wxPoint2DDouble &pt );
 623     inline wxRect2DDouble CreateUnion( const wxRect2DDouble &otherRect ) const
 624         { wxRect2DDouble result; Union( *this , otherRect , &result); return result; }
 625
 626     inline void Scale( wxDouble f )
 627         { m_x *= f; m_y *= f; m_width *= f; m_height *= f;}
 628     inline void Scale( wxInt32 num , wxInt32 denum )
 629         { m_x *= ((wxDouble)num)/((wxDouble)denum); m_y *= ((wxDouble)num)/((wxDouble)denum);
 630                 m_width *= ((wxDouble)num)/((wxDouble)denum); m_height *= ((wxDouble)num)/((wxDouble)denum);}
 631
 632     wxRect2DDouble& operator = (const wxRect2DDouble& rect);
 633     inline bool operator == (const wxRect2DDouble& rect) const
 634         { return wxIsSameDouble(m_x, rect.m_x) && wxIsSameDouble(m_y, rect.m_y) && HaveEqualSize(rect); }
 635     inline bool operator != (const wxRect2DDouble& rect) const
 636         { return !(*this == rect); }
 637
 638     wxDouble  m_x;
 639     wxDouble  m_y;
 640     wxDouble  m_width;
 641     wxDouble m_height;
 642 };
 643
 644
 645 // 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
 646 // top left and bottom right corner, or by the top left corner and size. A point is contained within the rectangle if
 647 // left <= x < right  and top <= m_y < bottom , thus it is a half open interval.
 648
 649 class WXDLLIMPEXP_CORE wxRect2DInt
 650 {
 651 public:
 652        wxRect2DInt() { m_x = m_y = m_width = m_height = 0; }
 653        wxRect2DInt( const wxRect& r ) { m_x = r.x ; m_y = r.y ; m_width = r.width ; m_height = r.height ; }
 654        wxRect2DInt(wxInt32 x, wxInt32 y, wxInt32 w, wxInt32 h) { m_x = x; m_y = y; m_width = w;  m_height = h; }
 655        wxRect2DInt(const wxPoint2DInt& topLeft, const wxPoint2DInt& bottomRight);
 656        inline wxRect2DInt(const wxPoint2DInt& pos, const wxSize& size);
 657        inline wxRect2DInt(const wxRect2DInt& rect);
 658
 659         // single attribute accessors
 660
 661       inline wxPoint2DInt GetPosition() { return wxPoint2DInt(m_x, m_y); }
 662        inline wxSize GetSize() { return wxSize(m_width, m_height); }
 663
 664         // for the edge and corner accessors there are two setters conterparts, the Set.. functions keep the other corners at their
 665         // position whenever sensible, the Move.. functions keep the size of the rect and move the other corners apropriately
 666
 667       inline wxInt32 GetLeft() const { return m_x; }
 668        inline void SetLeft( wxInt32 n ) { m_width += m_x - n; m_x = n; }
 669        inline void MoveLeftTo( wxInt32 n ) { m_x = n; }
 670        inline wxInt32 GetTop() const { return m_y; }
 671        inline void SetTop( wxInt32 n ) { m_height += m_y - n; m_y = n; }
 672        inline void MoveTopTo( wxInt32 n ) { m_y = n; }
 673        inline wxInt32 GetBottom() const { return m_y + m_height; }
 674        inline void SetBottom( wxInt32 n ) { m_height += n - (m_y+m_height);}
 675        inline void MoveBottomTo( wxInt32 n ) { m_y = n - m_height; }
 676        inline wxInt32 GetRight() const { return m_x + m_width; }
 677        inline void SetRight( wxInt32 n ) { m_width += n - (m_x+m_width) ; }
 678        inline void MoveRightTo( wxInt32 n ) { m_x = n - m_width; }
 679
 680         inline wxPoint2DInt GetLeftTop() const { return wxPoint2DInt( m_x , m_y ); }
 681         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; }
 682         inline void MoveLeftTopTo( const wxPoint2DInt &pt ) { m_x = pt.m_x; m_y = pt.m_y; }
 683         inline wxPoint2DInt GetLeftBottom() const { return wxPoint2DInt( m_x , m_y + m_height ); }
 684         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; }
 685         inline void MoveLeftBottomTo( const wxPoint2DInt &pt ) { m_x = pt.m_x; m_y = pt.m_y - m_height; }
 686         inline wxPoint2DInt GetRightTop() const { return wxPoint2DInt( m_x+m_width , m_y ); }
 687         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; }
 688         inline void MoveRightTopTo( const wxPoint2DInt &pt ) { m_x = pt.m_x - m_width; m_y = pt.m_y; }
 689         inline wxPoint2DInt GetRightBottom() const { return wxPoint2DInt( m_x+m_width , m_y + m_height ); }
 690         inline void SetRightBottom( const wxPoint2DInt &pt ) { m_width += pt.m_x - ( m_x + m_width ); m_height += pt.m_y - (m_y+m_height);}
 691         inline void MoveRightBottomTo( const wxPoint2DInt &pt ) { m_x = pt.m_x - m_width; m_y = pt.m_y - m_height; }
 692         inline wxPoint2DInt GetCentre() const { return wxPoint2DInt( m_x+m_width/2 , m_y+m_height/2 ); }
 693         inline void SetCentre( const wxPoint2DInt &pt ) { MoveCentreTo( pt ); }    // since this is impossible without moving...
 694         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); }
 695         inline wxOutCode GetOutCode( const wxPoint2DInt &pt ) const
 696             { return (wxOutCode) (( ( pt.m_x < m_x ) ? wxOutLeft : 0 ) +
 697                      ( ( pt.m_x >= m_x + m_width ) ? wxOutRight : 0 ) +
 698                      ( ( pt.m_y < m_y ) ? wxOutTop : 0 )  +
 699                      ( ( pt.m_y >= m_y + m_height ) ? wxOutBottom : 0 )); }
 700         inline wxOutCode GetOutcode( const wxPoint2DInt &pt ) const
 701             { return GetOutCode( pt ) ; }
 702         inline bool Contains( const wxPoint2DInt &pt ) const
 703             { return  GetOutCode( pt ) == wxInside; }
 704         inline bool Contains( const wxRect2DInt &rect ) const
 705             { return ( ( ( m_x <= rect.m_x ) && ( rect.m_x + rect.m_width <= m_x + m_width ) ) &&
 706                 ( ( m_y <= rect.m_y ) && ( rect.m_y + rect.m_height <= m_y + m_height ) ) ); }
 707         inline bool IsEmpty() const
 708             { return ( m_width <= 0 || m_height <= 0 ); }
 709         inline bool HaveEqualSize( const wxRect2DInt &rect ) const
 710             { return ( rect.m_width == m_width && rect.m_height == m_height ); }
 711
 712         inline void Inset( wxInt32 x , wxInt32 y ) { m_x += x; m_y += y; m_width -= 2 * x; m_height -= 2 * y; }
 713         inline void Inset( wxInt32 left , wxInt32 top ,wxInt32 right , wxInt32 bottom  )
 714             { m_x += left; m_y += top; m_width -= left + right; m_height -= top + bottom;}
 715         inline void Offset( const wxPoint2DInt &pt ) { m_x += pt.m_x; m_y += pt.m_y; }
 716         void ConstrainTo( const wxRect2DInt &rect );
 717         inline wxPoint2DInt Interpolate( wxInt32 widthfactor , wxInt32 heightfactor ) { return wxPoint2DInt( m_x + m_width * widthfactor , m_y + m_height * heightfactor ); }
 718
 719         static void Intersect( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest );
 720         inline void Intersect( const wxRect2DInt &otherRect ) { Intersect( *this , otherRect , this ); }
 721         inline wxRect2DInt CreateIntersection( const wxRect2DInt &otherRect ) const { wxRect2DInt result; Intersect( *this , otherRect , &result); return result; }
 722         bool Intersects( const wxRect2DInt &rect ) const;
 723
 724         static void Union( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest );
 725         void Union( const wxRect2DInt &otherRect )  { Union( *this , otherRect , this ); }
 726         void Union( const wxPoint2DInt &pt );
 727         inline wxRect2DInt CreateUnion( const wxRect2DInt &otherRect ) const { wxRect2DInt result; Union( *this , otherRect , &result); return result; }
 728
 729         inline void Scale( wxInt32 f ) { m_x *= f; m_y *= f; m_width *= f; m_height *= f;}
 730         inline void Scale( wxInt32 num , wxInt32 denum )
 731             { m_x *= ((wxInt32)num)/((wxInt32)denum); m_y *= ((wxInt32)num)/((wxInt32)denum);
 732                 m_width *= ((wxInt32)num)/((wxInt32)denum); m_height *= ((wxInt32)num)/((wxInt32)denum);}
 733
 734        wxRect2DInt& operator = (const wxRect2DInt& rect);
 735        bool operator == (const wxRect2DInt& rect) const;
 736        bool operator != (const wxRect2DInt& rect) const;
 737
 738 #if wxUSE_STREAMS
 739        void WriteTo( wxDataOutputStream &stream ) const;
 740        void ReadFrom( wxDataInputStream &stream );
 741 #endif // wxUSE_STREAMS
 742
 743        wxInt32 m_x;
 744        wxInt32 m_y;
 745        wxInt32 m_width;
 746        wxInt32 m_height;
 747 };
 748
 749 inline wxRect2DInt::wxRect2DInt( const wxRect2DInt &r )
 750 {
 751     m_x = r.m_x;
 752     m_y = r.m_y;
 753     m_width = r.m_width;
 754     m_height = r.m_height;
 755 }
 756
 757 inline wxRect2DInt::wxRect2DInt( const wxPoint2DInt &a , const wxPoint2DInt &b)
 758 {
 759     m_x = wxMin( a.m_x , b.m_x );
 760     m_y = wxMin( a.m_y , b.m_y );
 761     m_width = abs( a.m_x - b.m_x );
 762     m_height = abs( a.m_y - b.m_y );
 763 }
 764
 765 inline wxRect2DInt::wxRect2DInt( const wxPoint2DInt& pos, const wxSize& size)
 766 {
 767     m_x = pos.m_x;
 768     m_y = pos.m_y;
 769     m_width = size.x;
 770     m_height = size.y;
 771 }
 772
 773 inline bool wxRect2DInt::operator == (const wxRect2DInt& rect) const
 774 {
 775     return (m_x==rect.m_x && m_y==rect.m_y &&
 776             m_width==rect.m_width && m_height==rect.m_height);
 777 }
 778
 779 inline bool wxRect2DInt::operator != (const wxRect2DInt& rect) const
 780 {
 781     return !(*this == rect);
 782 }
 783
 784 class wxTransform2D
 785 {
 786 public :
 787     virtual ~wxTransform2D() { }
 788     virtual void                    Transform( wxPoint2DInt* pt )const  = 0;
 789     virtual void                    Transform( wxRect2DInt* r ) const;
 790     virtual wxPoint2DInt    Transform( const wxPoint2DInt &pt ) const;
 791     virtual wxRect2DInt        Transform( const wxRect2DInt &r ) const ;
 792
 793     virtual void                    InverseTransform( wxPoint2DInt* pt ) const  = 0;
 794     virtual void                    InverseTransform( wxRect2DInt* r ) const ;
 795     virtual wxPoint2DInt    InverseTransform( const wxPoint2DInt &pt ) const ;
 796     virtual wxRect2DInt        InverseTransform( const wxRect2DInt &r ) const ;
 797 };
 798
 799 inline void    wxTransform2D::Transform( wxRect2DInt* r ) const
 800     { wxPoint2DInt a = r->GetLeftTop() , b = r->GetRightBottom(); Transform( &a ); Transform( &b ); *r = wxRect2DInt( a , b ); }
 801
 802 inline wxPoint2DInt    wxTransform2D::Transform( const wxPoint2DInt &pt ) const
 803     { wxPoint2DInt res = pt; Transform( &res ); return res; }
 804
 805 inline wxRect2DInt     wxTransform2D::Transform( const wxRect2DInt &r ) const
 806     { wxRect2DInt res = r; Transform( &res ); return res; }
 807
 808 inline void    wxTransform2D::InverseTransform( wxRect2DInt* r ) const
 809     { wxPoint2DInt a = r->GetLeftTop() , b = r->GetRightBottom(); InverseTransform( &a ); InverseTransform( &b ); *r = wxRect2DInt( a , b ); }
 810
 811 inline wxPoint2DInt    wxTransform2D::InverseTransform( const wxPoint2DInt &pt ) const
 812     { wxPoint2DInt res = pt; InverseTransform( &res ); return res; }
 813
 814 inline wxRect2DInt     wxTransform2D::InverseTransform( const wxRect2DInt &r ) const
 815     { wxRect2DInt res = r; InverseTransform( &res ); return res; }
 816
 817
 818 #endif // wxUSE_GEOMETRY
 819
 820 #endif // _WX_GEOMETRY_H_