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