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:
   8 // Copyright:   (c) 1999 Stefan Csomor
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_GEOMETRY_H_
  13 #define _WX_GEOMETRY_H_
  14
  15 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  16     #pragma interface "geometry.h"
  17 #endif
  18
  19 #include "wx/defs.h"
  20
  21 #if wxUSE_GEOMETRY
  22
  23 #include "wx/utils.h"
  24 #include "wx/gdicmn.h"
  25 #include "wx/math.h"
  26
  27 #ifdef __WXMSW__
  28     #define wxMulDivInt32( a , b , c ) ::MulDiv( a , b , c )
  29 #elif defined( __WXMAC__ )
  30     #define wxMulDivInt32( a , b , c ) ( (wxInt32) ( ( (wxInt64)(a) * (wxInt64)(b) ) / (wxInt64)(c) ) )
  31 #else
  32     #define wxMulDivInt32( a , b , c ) ((wxInt32)((a)*(((wxDouble)b)/((wxDouble)c))))
  33 #endif
  34
  35 class WXDLLIMPEXP_BASE wxDataInputStream;
  36 class WXDLLIMPEXP_BASE wxDataOutputStream;
  37
  38 // clipping from Cohen-Sutherland
  39
  40 enum wxOutCode
  41 {
  42     wxInside = 0x00 ,
  43     wxOutLeft = 0x01 ,
  44     wxOutRight = 0x02 ,
  45     wxOutTop = 0x08 ,
  46     wxOutBottom = 0x04
  47 };
  48
  49 class WXDLLEXPORT wxPoint2DInt
  50 {
  51 public :
  52     inline wxPoint2DInt();
  53     inline wxPoint2DInt( wxInt32 x , wxInt32 y );
  54     inline wxPoint2DInt( const wxPoint2DInt &pt );
  55     inline wxPoint2DInt( const wxPoint &pt );
  56
  57     // noops for this class, just return the coords
  58     inline void GetFloor( wxInt32 *x , wxInt32 *y ) const;
  59     inline void GetRounded( wxInt32 *x , wxInt32 *y ) const;
  60
  61     inline wxDouble GetVectorLength() const;
  62            wxDouble GetVectorAngle() const;
  63     inline void SetVectorLength( wxDouble length );
  64            void SetVectorAngle( wxDouble degrees );
  65            void SetPolarCoordinates( wxInt32 angle , wxInt32 length );
  66     // set the vector length to 1.0, preserving the angle
  67     inline void Normalize();
  68
  69     inline wxDouble GetDistance( const wxPoint2DInt &pt ) const;
  70     inline wxDouble GetDistanceSquare( const wxPoint2DInt &pt ) const;
  71     inline wxInt32 GetDotProduct( const wxPoint2DInt &vec ) const;
  72     inline wxInt32 GetCrossProduct( const wxPoint2DInt &vec ) const;
  73
  74     // the reflection of this point
  75     inline wxPoint2DInt operator-();
  76
  77     inline wxPoint2DInt& operator=(const wxPoint2DInt& pt);
  78     inline wxPoint2DInt& operator+=(const wxPoint2DInt& pt);
  79     inline wxPoint2DInt& operator-=(const wxPoint2DInt& pt);
  80     inline wxPoint2DInt& operator*=(const wxPoint2DInt& pt);
  81     inline wxPoint2DInt& operator*=(wxDouble n);
  82     inline wxPoint2DInt& operator*=(wxInt32 n);
  83     inline wxPoint2DInt& operator/=(const wxPoint2DInt& pt);
  84     inline wxPoint2DInt& operator/=(wxDouble n);
  85     inline wxPoint2DInt& operator/=(wxInt32 n);
  86     inline operator wxPoint() const;
  87     inline bool operator==(const wxPoint2DInt& pt) const;
  88     inline bool operator!=(const wxPoint2DInt& pt) const;
  89
  90 #if wxUSE_STREAMS
  91     void WriteTo( wxDataOutputStream &stream ) const;
  92     void ReadFrom( wxDataInputStream &stream );
  93 #endif // wxUSE_STREAMS
  94
  95     wxInt32 m_x;
  96     wxInt32 m_y;
  97 };
  98
  99 inline wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
 100 inline wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
 101 inline wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
 102 inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt);
 103 inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt);
 104 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n);
 105 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n);
 106 inline wxPoint2DInt operator/(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
 107 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n);
 108 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n);
 109
 110 inline wxPoint2DInt::wxPoint2DInt()
 111 {
 112     m_x = 0;
 113     m_y = 0;
 114 }
 115
 116 inline wxPoint2DInt::wxPoint2DInt( wxInt32 x , wxInt32 y )
 117 {
 118     m_x = x;
 119     m_y = y;
 120 }
 121
 122 inline wxPoint2DInt::wxPoint2DInt( const wxPoint2DInt &pt )
 123 {
 124     m_x = pt.m_x;
 125     m_y = pt.m_y;
 126 }
 127
 128 inline wxPoint2DInt::wxPoint2DInt( const wxPoint &pt )
 129 {
 130     m_x = pt.x;
 131     m_y = pt.y;
 132 }
 133
 134 inline void wxPoint2DInt::GetFloor( wxInt32 *x , wxInt32 *y ) const
 135 {
 136     if ( x )
 137         *x = m_x;
 138     if ( y )
 139         *y = m_y;
 140 }
 141
 142 inline void wxPoint2DInt::GetRounded( wxInt32 *x , wxInt32 *y ) const
 143 {
 144     GetFloor(x, y);
 145 }
 146
 147 inline wxDouble wxPoint2DInt::GetVectorLength() const
 148 {
 149     // cast needed MIPSpro compiler under SGI
 150     return sqrt( (double)(m_x)*(m_x) + (m_y)*(m_y) );
 151 }
 152
 153 inline void wxPoint2DInt::SetVectorLength( wxDouble length )
 154 {
 155     wxDouble before = GetVectorLength();
 156     m_x = (wxInt32)(m_x * length / before);
 157     m_y = (wxInt32)(m_y * length / before);
 158 }
 159
 160 inline void wxPoint2DInt::Normalize()
 161 {
 162     SetVectorLength( 1 );
 163 }
 164
 165 inline wxDouble wxPoint2DInt::GetDistance( const wxPoint2DInt &pt ) const
 166 {
 167     return sqrt( GetDistanceSquare( pt ) );
 168 }
 169
 170 inline wxDouble wxPoint2DInt::GetDistanceSquare( const wxPoint2DInt &pt ) const
 171 {
 172     return ( (pt.m_x-m_x)*(pt.m_x-m_x) + (pt.m_y-m_y)*(pt.m_y-m_y) );
 173 }
 174
 175 inline wxInt32 wxPoint2DInt::GetDotProduct( const wxPoint2DInt &vec ) const
 176 {
 177     return ( m_x * vec.m_x + m_y * vec.m_y );
 178 }
 179
 180 inline wxInt32 wxPoint2DInt::GetCrossProduct( const wxPoint2DInt &vec ) const
 181 {
 182     return ( m_x * vec.m_y - vec.m_x * m_y );
 183 }
 184
 185 inline wxPoint2DInt::operator wxPoint() const
 186 {
 187     return wxPoint( m_x, m_y);
 188 }
 189
 190 inline wxPoint2DInt wxPoint2DInt::operator-()
 191 {
 192     return wxPoint2DInt( -m_x, -m_y);
 193 }
 194
 195 inline wxPoint2DInt& wxPoint2DInt::operator=(const wxPoint2DInt& pt)
 196 {
 197     m_x = pt.m_x;
 198     m_y = pt.m_y;
 199     return *this;
 200 }
 201
 202 inline wxPoint2DInt& wxPoint2DInt::operator+=(const wxPoint2DInt& pt)
 203 {
 204     m_x = m_x + pt.m_x;
 205     m_y = m_y + pt.m_y;
 206     return *this;
 207 }
 208
 209 inline wxPoint2DInt& wxPoint2DInt::operator-=(const wxPoint2DInt& pt)
 210 {
 211     m_x = m_x - pt.m_x;
 212     m_y = m_y - pt.m_y;
 213     return *this;
 214 }
 215
 216 inline wxPoint2DInt& wxPoint2DInt::operator*=(const wxPoint2DInt& pt)
 217 {
 218     m_x = m_x + pt.m_x;
 219     m_y = m_y + pt.m_y;
 220     return *this;
 221 }
 222
 223 inline wxPoint2DInt& wxPoint2DInt::operator/=(const wxPoint2DInt& pt)
 224 {
 225     m_x = m_x - pt.m_x;
 226     m_y = m_y - pt.m_y;
 227     return *this;
 228 }
 229
 230 inline bool wxPoint2DInt::operator==(const wxPoint2DInt& pt) const
 231 {
 232     return m_x == pt.m_x && m_y == pt.m_y;
 233 }
 234
 235 inline bool wxPoint2DInt::operator!=(const wxPoint2DInt& pt) const
 236 {
 237     return m_x != pt.m_x || m_y != pt.m_y;
 238 }
 239
 240 inline wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 241 {
 242     return wxPoint2DInt( pt1.m_x + pt2.m_x , pt1.m_y + pt2.m_y );
 243 }
 244
 245 inline wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 246 {
 247     return wxPoint2DInt( pt1.m_x - pt2.m_x , pt1.m_y - pt2.m_y );
 248 }
 249
 250
 251 inline wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 252 {
 253     return wxPoint2DInt( pt1.m_x * pt2.m_x , pt1.m_y * pt2.m_y );
 254 }
 255
 256 inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt)
 257 {
 258     return wxPoint2DInt( pt.m_x * n , pt.m_y * n );
 259 }
 260
 261 inline wxPoint2DInt operator*(wxDouble n , const wxPoint2DInt& pt)
 262 {
 263     return wxPoint2DInt( (int) (pt.m_x * n) , (int) (pt.m_y * n) );
 264 }
 265
 266 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n)
 267 {
 268     return wxPoint2DInt( pt.m_x * n , pt.m_y * n );
 269 }
 270
 271 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxDouble n)
 272 {
 273     return wxPoint2DInt( (int) (pt.m_x * n) , (int) (pt.m_y * n) );
 274 }
 275
 276 inline wxPoint2DInt operator/(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 277 {
 278     return wxPoint2DInt( pt1.m_x / pt2.m_x , pt1.m_y / pt2.m_y );
 279 }
 280
 281 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n)
 282 {
 283     return wxPoint2DInt( pt.m_x / n , pt.m_y / n );
 284 }
 285
 286 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxDouble n)
 287 {
 288     return wxPoint2DInt( (int) (pt.m_x / n) , (int) (pt.m_y / n) );
 289 }
 290
 291 // wxPoint2Ds represent a point or a vector in a 2d coordinate system
 292
 293 class WXDLLEXPORT wxPoint2DDouble
 294 {
 295 public :
 296     inline wxPoint2DDouble();
 297     inline wxPoint2DDouble( wxDouble x , wxDouble y );
 298     inline wxPoint2DDouble( const wxPoint2DDouble &pt );
 299     wxPoint2DDouble( const wxPoint2DInt &pt )
 300         { m_x = (wxDouble) pt.m_x ; m_y = (wxDouble) pt.m_y ; }
 301     wxPoint2DDouble( const wxPoint &pt )
 302         { m_x = (wxDouble) pt.x ; m_y = (wxDouble) pt.y ; }
 303
 304     // two different conversions to integers, floor and rounding
 305     inline void GetFloor( wxInt32 *x , wxInt32 *y ) const;
 306     inline void GetRounded( wxInt32 *x , wxInt32 *y ) const;
 307
 308     inline wxDouble GetVectorLength() const;
 309      wxDouble GetVectorAngle() const ;
 310     void SetVectorLength( wxDouble length );
 311     void SetVectorAngle( wxDouble degrees );
 312     void SetPolarCoordinates( wxDouble angle , wxDouble length );
 313     // set the vector length to 1.0, preserving the angle
 314     void Normalize();
 315
 316     inline wxDouble GetDistance( const wxPoint2DDouble &pt ) const;
 317     inline wxDouble GetDistanceSquare( const wxPoint2DDouble &pt ) const;
 318     inline wxDouble GetDotProduct( const wxPoint2DDouble &vec ) const;
 319     inline wxDouble GetCrossProduct( const wxPoint2DDouble &vec ) const;
 320
 321     // the reflection of this point
 322     inline wxPoint2DDouble operator-();
 323
 324     inline wxPoint2DDouble& operator=(const wxPoint2DDouble& pt);
 325     inline wxPoint2DDouble& operator+=(const wxPoint2DDouble& pt);
 326     inline wxPoint2DDouble& operator-=(const wxPoint2DDouble& pt);
 327     inline wxPoint2DDouble& operator*=(const wxPoint2DDouble& pt);
 328     inline wxPoint2DDouble& operator*=(wxDouble n);
 329     inline wxPoint2DDouble& operator*=(wxInt32 n);
 330     inline wxPoint2DDouble& operator/=(const wxPoint2DDouble& pt);
 331     inline wxPoint2DDouble& operator/=(wxDouble n);
 332     inline wxPoint2DDouble& operator/=(wxInt32 n);
 333
 334     inline bool operator==(const wxPoint2DDouble& pt) const;
 335     inline bool operator!=(const wxPoint2DDouble& pt) const;
 336
 337     wxDouble m_x;
 338     wxDouble m_y;
 339 };
 340
 341 inline wxPoint2DDouble operator+(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 342 inline wxPoint2DDouble operator-(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 343 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 344 inline wxPoint2DDouble operator*(wxDouble n , const wxPoint2DDouble& pt);
 345 inline wxPoint2DDouble operator*(wxInt32 n , const wxPoint2DDouble& pt);
 346 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxDouble n);
 347 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxInt32 n);
 348 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 349 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxDouble n);
 350 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxInt32 n);
 351
 352 inline wxPoint2DDouble::wxPoint2DDouble()
 353 {
 354     m_x = 0.0;
 355     m_y = 0.0;
 356 }
 357
 358 inline wxPoint2DDouble::wxPoint2DDouble( wxDouble x , wxDouble y )
 359 {
 360     m_x = x;
 361     m_y = y;
 362 }
 363
 364 inline wxPoint2DDouble::wxPoint2DDouble( const wxPoint2DDouble &pt )
 365 {
 366     m_x = pt.m_x;
 367     m_y = pt.m_y;
 368 }
 369
 370 inline void wxPoint2DDouble::GetFloor( wxInt32 *x , wxInt32 *y ) const
 371 {
 372     *x = (wxInt32) floor( m_x );
 373     *y = (wxInt32) floor( m_y );
 374 }
 375
 376 inline void wxPoint2DDouble::GetRounded( wxInt32 *x , wxInt32 *y ) const
 377 {
 378     *x = (wxInt32) floor( m_x + 0.5 );
 379     *y = (wxInt32) floor( m_y + 0.5);
 380 }
 381
 382 inline wxDouble wxPoint2DDouble::GetVectorLength() const
 383 {
 384     return sqrt( (m_x)*(m_x) + (m_y)*(m_y) ) ;
 385 }
 386
 387 inline void wxPoint2DDouble::SetVectorLength( wxDouble length )
 388 {
 389     wxDouble before = GetVectorLength() ;
 390     m_x = (m_x * length / before) ;
 391     m_y = (m_y * length / before) ;
 392 }
 393
 394 inline wxDouble wxPoint2DDouble::GetDistance( const wxPoint2DDouble &pt ) const
 395 {
 396     return sqrt( GetDistanceSquare( pt ) );
 397 }
 398
 399 inline wxDouble wxPoint2DDouble::GetDistanceSquare( const wxPoint2DDouble &pt ) const
 400 {
 401     return ( (pt.m_x-m_x)*(pt.m_x-m_x) + (pt.m_y-m_y)*(pt.m_y-m_y) );
 402 }
 403
 404 inline wxDouble wxPoint2DDouble::GetDotProduct( const wxPoint2DDouble &vec ) const
 405 {
 406     return ( m_x * vec.m_x + m_y * vec.m_y );
 407 }
 408
 409 inline wxDouble wxPoint2DDouble::GetCrossProduct( const wxPoint2DDouble &vec ) const
 410 {
 411     return ( m_x * vec.m_y - vec.m_x * m_y );
 412 }
 413
 414 inline wxPoint2DDouble wxPoint2DDouble::operator-()
 415 {
 416     return wxPoint2DDouble( -m_x, -m_y);
 417 }
 418
 419 inline wxPoint2DDouble& wxPoint2DDouble::operator=(const wxPoint2DDouble& pt)
 420 {
 421     m_x = pt.m_x;
 422     m_y = pt.m_y;
 423     return *this;
 424 }
 425
 426 inline wxPoint2DDouble& wxPoint2DDouble::operator+=(const wxPoint2DDouble& pt)
 427 {
 428     m_x = m_x + pt.m_x;
 429     m_y = m_y + pt.m_y;
 430     return *this;
 431 }
 432
 433 inline wxPoint2DDouble& wxPoint2DDouble::operator-=(const wxPoint2DDouble& pt)
 434 {
 435     m_x = m_x - pt.m_x;
 436     m_y = m_y - pt.m_y;
 437     return *this;
 438 }
 439
 440 inline wxPoint2DDouble& wxPoint2DDouble::operator*=(const wxPoint2DDouble& pt)
 441 {
 442     m_x = m_x * pt.m_x;
 443     m_y = m_y * pt.m_y;
 444     return *this;
 445 }
 446
 447 inline wxPoint2DDouble& wxPoint2DDouble::operator/=(const wxPoint2DDouble& pt)
 448 {
 449     m_x = m_x / pt.m_x;
 450     m_y = m_y / pt.m_y;
 451     return *this;
 452 }
 453
 454 inline bool wxPoint2DDouble::operator==(const wxPoint2DDouble& pt) const
 455 {
 456     return m_x == pt.m_x && m_y == pt.m_y;
 457 }
 458
 459 inline bool wxPoint2DDouble::operator!=(const wxPoint2DDouble& pt) const
 460 {
 461     return m_x != pt.m_x || m_y != pt.m_y;
 462 }
 463
 464 inline wxPoint2DDouble operator+(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 465 {
 466     return wxPoint2DDouble( pt1.m_x + pt2.m_x , pt1.m_y + pt2.m_y );
 467 }
 468
 469 inline wxPoint2DDouble operator-(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 470 {
 471     return wxPoint2DDouble( pt1.m_x - pt2.m_x , pt1.m_y - pt2.m_y );
 472 }
 473
 474
 475 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 476 {
 477     return wxPoint2DDouble( pt1.m_x * pt2.m_x , pt1.m_y * pt2.m_y );
 478 }
 479
 480 inline wxPoint2DDouble operator*(wxDouble n , const wxPoint2DDouble& pt)
 481 {
 482     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 483 }
 484
 485 inline wxPoint2DDouble operator*(wxInt32 n , const wxPoint2DDouble& pt)
 486 {
 487     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 488 }
 489
 490 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxDouble n)
 491 {
 492     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 493 }
 494
 495 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxInt32 n)
 496 {
 497     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 498 }
 499
 500 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 501 {
 502     return wxPoint2DDouble( pt1.m_x / pt2.m_x , pt1.m_y / pt2.m_y );
 503 }
 504
 505 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxDouble n)
 506 {
 507     return wxPoint2DDouble( pt.m_x / n , pt.m_y / n );
 508 }
 509
 510 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxInt32 n)
 511 {
 512     return wxPoint2DDouble( pt.m_x / n , pt.m_y / n );
 513 }
 514
 515 // 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
 516 // top left and bottom right corner, or by the top left corner and size. A point is contained within the rectangle if
 517 // left <= x < right  and top <= m_y < bottom , thus it is a half open interval.
 518
 519 class WXDLLEXPORT wxRect2DDouble
 520 {
 521 public:
 522     wxRect2DDouble()
 523         { m_x = m_y = m_width = m_height = 0; }
 524     wxRect2DDouble(wxDouble x, wxDouble y, wxDouble w, wxDouble h)
 525         { m_x = x; m_y = y; m_width = w;  m_height = h; }
 526 /*
 527     wxRect2DDouble(const wxPoint2DDouble& topLeft, const wxPoint2DDouble& bottomRight);
 528     wxRect2DDouble(const wxPoint2DDouble& pos, const wxSize& size);
 529     wxRect2DDouble(const wxRect2DDouble& rect);
 530 */
 531         // single attribute accessors
 532
 533     inline wxPoint2DDouble GetPosition()
 534         { return wxPoint2DDouble(m_x, m_y); }
 535     inline wxSize GetSize()
 536         { return wxSize((int) m_width, (int) m_height); }
 537
 538     // for the edge and corner accessors there are two setters conterparts, the Set.. functions keep the other corners at their
 539         // position whenever sensible, the Move.. functions keep the size of the rect and move the other corners apropriately
 540
 541     inline wxDouble GetLeft() const { return m_x; }
 542     inline void SetLeft( wxDouble n ) { m_width += m_x - n; m_x = n; }
 543     inline void MoveLeftTo( wxDouble n ) { m_x = n; }
 544     inline wxDouble GetTop() const { return m_y; }
 545     inline void SetTop( wxDouble n ) { m_height += m_y - n; m_y = n; }
 546     inline void MoveTopTo( wxDouble n ) { m_y = n; }
 547     inline wxDouble GetBottom() const { return m_y + m_height; }
 548     inline void SetBottom( wxDouble n ) { m_height += n - (m_y+m_height);}
 549     inline void MoveBottomTo( wxDouble n ) { m_y = n - m_height; }
 550     inline wxDouble GetRight() const { return m_x + m_width; }
 551     inline void SetRight( wxDouble n ) { m_width += n - (m_x+m_width) ; }
 552     inline void MoveRightTo( wxDouble n ) { m_x = n - m_width; }
 553
 554     inline wxPoint2DDouble GetLeftTop() const
 555         { return wxPoint2DDouble( m_x , m_y ); }
 556     inline void SetLeftTop( const wxPoint2DDouble &pt )
 557         { m_width += m_x - pt.m_x; m_height += m_y - pt.m_y; m_x = pt.m_x; m_y = pt.m_y; }
 558     inline void MoveLeftTopTo( const wxPoint2DDouble &pt )
 559         { m_x = pt.m_x; m_y = pt.m_y; }
 560     inline wxPoint2DDouble GetLeftBottom() const
 561         { return wxPoint2DDouble( m_x , m_y + m_height ); }
 562     inline void SetLeftBottom( const wxPoint2DDouble &pt )
 563         { m_width += m_x - pt.m_x; m_height += pt.m_y - (m_y+m_height) ; m_x = pt.m_x; }
 564     inline void MoveLeftBottomTo( const wxPoint2DDouble &pt )
 565         { m_x = pt.m_x; m_y = pt.m_y - m_height; }
 566     inline wxPoint2DDouble GetRightTop() const
 567         { return wxPoint2DDouble( m_x+m_width , m_y ); }
 568     inline void SetRightTop( const wxPoint2DDouble &pt )
 569         { m_width += pt.m_x - ( m_x + m_width ); m_height += m_y - pt.m_y; m_y = pt.m_y; }
 570     inline void MoveRightTopTo( const wxPoint2DDouble &pt )
 571         { m_x = pt.m_x - m_width; m_y = pt.m_y; }
 572     inline wxPoint2DDouble GetRightBottom() const
 573         { return wxPoint2DDouble( m_x+m_width , m_y + m_height ); }
 574     inline void SetRightBottom( const wxPoint2DDouble &pt )
 575         { m_width += pt.m_x - ( m_x + m_width ); m_height += pt.m_y - (m_y+m_height);}
 576     inline void MoveRightBottomTo( const wxPoint2DDouble &pt )
 577         { m_x = pt.m_x - m_width; m_y = pt.m_y - m_height; }
 578     inline wxPoint2DDouble GetCentre() const
 579         { return wxPoint2DDouble( m_x+m_width/2 , m_y+m_height/2 ); }
 580     inline void SetCentre( const wxPoint2DDouble &pt )
 581         { MoveCentreTo( pt ); }    // since this is impossible without moving...
 582     inline void MoveCentreTo( const wxPoint2DDouble &pt )
 583         { m_x += pt.m_x - (m_x+m_width/2) , m_y += pt.m_y -(m_y+m_height/2); }
 584     inline wxOutCode GetOutCode( const wxPoint2DDouble &pt ) const
 585         { return (wxOutCode) (( ( pt.m_x < m_x ) ? wxOutLeft : 0 ) +
 586                      ( ( pt.m_x > m_x + m_width ) ? wxOutRight : 0 ) +
 587                      ( ( pt.m_y < m_y ) ? wxOutTop : 0 )  +
 588                      ( ( pt.m_y > m_y + m_height ) ? wxOutBottom : 0 )); }
 589     inline wxOutCode GetOutcode(const wxPoint2DDouble &pt) const
 590         { return GetOutCode(pt) ; }
 591     inline bool Contains( const wxPoint2DDouble &pt ) const
 592         { return  GetOutCode( pt ) == wxInside; }
 593     inline bool Contains( const wxRect2DDouble &rect ) const
 594         { return ( ( ( m_x <= rect.m_x ) && ( rect.m_x + rect.m_width <= m_x + m_width ) ) &&
 595                 ( ( m_y <= rect.m_y ) && ( rect.m_y + rect.m_height <= m_y + m_height ) ) ); }
 596     inline bool IsEmpty() const
 597         { return ( m_width <= 0 || m_height <= 0 ); }
 598     inline bool HaveEqualSize( const wxRect2DDouble &rect ) const
 599         { return ( rect.m_width == m_width && rect.m_height == m_height ); }
 600
 601     inline void Inset( wxDouble x , wxDouble y )
 602         { m_x += x; m_y += y; m_width -= 2 * x; m_height -= 2 * y; }
 603     inline void Inset( wxDouble left , wxDouble top ,wxDouble right , wxDouble bottom  )
 604         { m_x += left; m_y += top; m_width -= left + right; m_height -= top + bottom;}
 605     inline void Offset( const wxPoint2DDouble &pt )
 606         { m_x += pt.m_x; m_y += pt.m_y; }
 607
 608     void ConstrainTo( const wxRect2DDouble &rect );
 609
 610     inline wxPoint2DDouble Interpolate( wxInt32 widthfactor , wxInt32 heightfactor )
 611         { return wxPoint2DDouble( m_x + m_width * widthfactor , m_y + m_height * heightfactor ); }
 612
 613     static void Intersect( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest );
 614     inline void Intersect( const wxRect2DDouble &otherRect )
 615         { Intersect( *this , otherRect , this ); }
 616     inline wxRect2DDouble CreateIntersection( const wxRect2DDouble &otherRect ) const
 617         { wxRect2DDouble result; Intersect( *this , otherRect , &result); return result; }
 618     bool Intersects( const wxRect2DDouble &rect ) const;
 619
 620     static void Union( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest );
 621     void Union( const wxRect2DDouble &otherRect )
 622         { Union( *this , otherRect , this ); }
 623     void Union( const wxPoint2DDouble &pt );
 624     inline wxRect2DDouble CreateUnion( const wxRect2DDouble &otherRect ) const
 625         { wxRect2DDouble result; Union( *this , otherRect , &result); return result; }
 626
 627     inline void Scale( wxDouble f )
 628         { m_x *= f; m_y *= f; m_width *= f; m_height *= f;}
 629     inline void Scale( wxInt32 num , wxInt32 denum )
 630         { m_x *= ((wxDouble)num)/((wxDouble)denum); m_y *= ((wxDouble)num)/((wxDouble)denum);
 631                 m_width *= ((wxDouble)num)/((wxDouble)denum); m_height *= ((wxDouble)num)/((wxDouble)denum);}
 632
 633     wxRect2DDouble& operator = (const wxRect2DDouble& rect);
 634     inline bool operator == (const wxRect2DDouble& rect)
 635         { return (m_x==rect.m_x && m_y==rect.m_y && m_width==rect.m_width && m_height==rect.m_height); }
 636     inline bool operator != (const wxRect2DDouble& rect)
 637         { return !(*this == rect); }
 638
 639     wxDouble  m_x;
 640     wxDouble  m_y;
 641     wxDouble  m_width;
 642     wxDouble m_height;
 643 };
 644
 645
 646 // 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
 647 // top left and bottom right corner, or by the top left corner and size. A point is contained within the rectangle if
 648 // left <= x < right  and top <= m_y < bottom , thus it is a half open interval.
 649
 650 class WXDLLEXPORT wxRect2DInt
 651 {
 652 public:
 653        wxRect2DInt() { m_x = m_y = m_width = m_height = 0; }
 654        wxRect2DInt( const wxRect& r ) { m_x = r.x ; m_y = r.y ; m_width = r.width ; m_height = r.height ; }
 655        wxRect2DInt(wxInt32 x, wxInt32 y, wxInt32 w, wxInt32 h) { m_x = x; m_y = y; m_width = w;  m_height = h; }
 656        wxRect2DInt(const wxPoint2DInt& topLeft, const wxPoint2DInt& bottomRight);
 657        inline wxRect2DInt(const wxPoint2DInt& pos, const wxSize& size);
 658        inline wxRect2DInt(const wxRect2DInt& rect);
 659
 660         // single attribute accessors
 661
 662       inline wxPoint2DInt GetPosition() { return wxPoint2DInt(m_x, m_y); }
 663        inline wxSize GetSize() { return wxSize(m_width, m_height); }
 664
 665         // for the edge and corner accessors there are two setters conterparts, the Set.. functions keep the other corners at their
 666         // position whenever sensible, the Move.. functions keep the size of the rect and move the other corners apropriately
 667
 668       inline wxInt32 GetLeft() const { return m_x; }
 669        inline void SetLeft( wxInt32 n ) { m_width += m_x - n; m_x = n; }
 670        inline void MoveLeftTo( wxInt32 n ) { m_x = n; }
 671        inline wxInt32 GetTop() const { return m_y; }
 672        inline void SetTop( wxInt32 n ) { m_height += m_y - n; m_y = n; }
 673        inline void MoveTopTo( wxInt32 n ) { m_y = n; }
 674        inline wxInt32 GetBottom() const { return m_y + m_height; }
 675        inline void SetBottom( wxInt32 n ) { m_height += n - (m_y+m_height);}
 676        inline void MoveBottomTo( wxInt32 n ) { m_y = n - m_height; }
 677        inline wxInt32 GetRight() const { return m_x + m_width; }
 678        inline void SetRight( wxInt32 n ) { m_width += n - (m_x+m_width) ; }
 679        inline void MoveRightTo( wxInt32 n ) { m_x = n - m_width; }
 680
 681         inline wxPoint2DInt GetLeftTop() const { return wxPoint2DInt( m_x , m_y ); }
 682         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; }
 683         inline void MoveLeftTopTo( const wxPoint2DInt &pt ) { m_x = pt.m_x; m_y = pt.m_y; }
 684         inline wxPoint2DInt GetLeftBottom() const { return wxPoint2DInt( m_x , m_y + m_height ); }
 685         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; }
 686         inline void MoveLeftBottomTo( const wxPoint2DInt &pt ) { m_x = pt.m_x; m_y = pt.m_y - m_height; }
 687         inline wxPoint2DInt GetRightTop() const { return wxPoint2DInt( m_x+m_width , m_y ); }
 688         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; }
 689         inline void MoveRightTopTo( const wxPoint2DInt &pt ) { m_x = pt.m_x - m_width; m_y = pt.m_y; }
 690         inline wxPoint2DInt GetRightBottom() const { return wxPoint2DInt( m_x+m_width , m_y + m_height ); }
 691         inline void SetRightBottom( const wxPoint2DInt &pt ) { m_width += pt.m_x - ( m_x + m_width ); m_height += pt.m_y - (m_y+m_height);}
 692         inline void MoveRightBottomTo( const wxPoint2DInt &pt ) { m_x = pt.m_x - m_width; m_y = pt.m_y - m_height; }
 693         inline wxPoint2DInt GetCentre() const { return wxPoint2DInt( m_x+m_width/2 , m_y+m_height/2 ); }
 694         inline void SetCentre( const wxPoint2DInt &pt ) { MoveCentreTo( pt ); }    // since this is impossible without moving...
 695         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); }
 696         inline wxOutCode GetOutCode( const wxPoint2DInt &pt ) const
 697             { return (wxOutCode) (( ( pt.m_x < m_x ) ? wxOutLeft : 0 ) +
 698                      ( ( pt.m_x >= m_x + m_width ) ? wxOutRight : 0 ) +
 699                      ( ( pt.m_y < m_y ) ? wxOutTop : 0 )  +
 700                      ( ( pt.m_y >= m_y + m_height ) ? wxOutBottom : 0 )); }
 701         inline wxOutCode GetOutcode( const wxPoint2DInt &pt ) const
 702             { return GetOutCode( pt ) ; }
 703         inline bool Contains( const wxPoint2DInt &pt ) const
 704             { return  GetOutCode( pt ) == wxInside; }
 705         inline bool Contains( const wxRect2DInt &rect ) const
 706             { return ( ( ( m_x <= rect.m_x ) && ( rect.m_x + rect.m_width <= m_x + m_width ) ) &&
 707                 ( ( m_y <= rect.m_y ) && ( rect.m_y + rect.m_height <= m_y + m_height ) ) ); }
 708         inline bool IsEmpty() const
 709             { return ( m_width <= 0 || m_height <= 0 ); }
 710         inline bool HaveEqualSize( const wxRect2DInt &rect ) const
 711             { return ( rect.m_width == m_width && rect.m_height == m_height ); }
 712
 713         inline void Inset( wxInt32 x , wxInt32 y ) { m_x += x; m_y += y; m_width -= 2 * x; m_height -= 2 * y; }
 714         inline void Inset( wxInt32 left , wxInt32 top ,wxInt32 right , wxInt32 bottom  )
 715             { m_x += left; m_y += top; m_width -= left + right; m_height -= top + bottom;}
 716         inline void Offset( const wxPoint2DInt &pt ) { m_x += pt.m_x; m_y += pt.m_y; }
 717         void ConstrainTo( const wxRect2DInt &rect );
 718         inline wxPoint2DInt Interpolate( wxInt32 widthfactor , wxInt32 heightfactor ) { return wxPoint2DInt( m_x + m_width * widthfactor , m_y + m_height * heightfactor ); }
 719
 720         static void Intersect( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest );
 721         inline void Intersect( const wxRect2DInt &otherRect ) { Intersect( *this , otherRect , this ); }
 722         inline wxRect2DInt CreateIntersection( const wxRect2DInt &otherRect ) const { wxRect2DInt result; Intersect( *this , otherRect , &result); return result; }
 723         bool Intersects( const wxRect2DInt &rect ) const;
 724
 725         static void Union( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest );
 726         void Union( const wxRect2DInt &otherRect )  { Union( *this , otherRect , this ); }
 727         void Union( const wxPoint2DInt &pt );
 728         inline wxRect2DInt CreateUnion( const wxRect2DInt &otherRect ) const { wxRect2DInt result; Union( *this , otherRect , &result); return result; }
 729
 730         inline void Scale( wxInt32 f ) { m_x *= f; m_y *= f; m_width *= f; m_height *= f;}
 731         inline void Scale( wxInt32 num , wxInt32 denum )
 732             { m_x *= ((wxInt32)num)/((wxInt32)denum); m_y *= ((wxInt32)num)/((wxInt32)denum);
 733                 m_width *= ((wxInt32)num)/((wxInt32)denum); m_height *= ((wxInt32)num)/((wxInt32)denum);}
 734
 735        wxRect2DInt& operator = (const wxRect2DInt& rect);
 736        bool operator == (const wxRect2DInt& rect) const;
 737        bool operator != (const wxRect2DInt& rect) const;
 738
 739 #if wxUSE_STREAMS
 740        void WriteTo( wxDataOutputStream &stream ) const;
 741        void ReadFrom( wxDataInputStream &stream );
 742 #endif // wxUSE_STREAMS
 743
 744        wxInt32 m_x;
 745        wxInt32 m_y;
 746        wxInt32 m_width;
 747        wxInt32 m_height;
 748 };
 749
 750 inline wxRect2DInt::wxRect2DInt( const wxRect2DInt &r )
 751 {
 752     m_x = r.m_x;
 753     m_y = r.m_y;
 754     m_width = r.m_width;
 755     m_height = r.m_height;
 756 }
 757
 758 inline wxRect2DInt::wxRect2DInt( const wxPoint2DInt &a , const wxPoint2DInt &b)
 759 {
 760     m_x = wxMin( a.m_x , b.m_x );
 761     m_y = wxMin( a.m_y , b.m_y );
 762     m_width = abs( a.m_x - b.m_x );
 763     m_height = abs( a.m_y - b.m_y );
 764 }
 765
 766 inline wxRect2DInt::wxRect2DInt( const wxPoint2DInt& pos, const wxSize& size)
 767 {
 768     m_x = pos.m_x;
 769     m_y = pos.m_y;
 770     m_width = size.x;
 771     m_height = size.y;
 772 }
 773
 774 inline bool wxRect2DInt::operator == (const wxRect2DInt& rect) const
 775 {
 776     return (m_x==rect.m_x && m_y==rect.m_y &&
 777             m_width==rect.m_width && m_height==rect.m_height);
 778 }
 779
 780 inline bool wxRect2DInt::operator != (const wxRect2DInt& rect) const
 781 {
 782     return !(*this == rect);
 783 }
 784
 785 class wxTransform2D
 786 {
 787 public :
 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_