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