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 #ifdef __GNUG__
  16     #pragma interface "geometry.cpp"
  17 #endif
  18
  19 #include "wx/defs.h"
  20
  21 #ifndef wxUSE_GEOMETRY
  22     #define wxUSE_GEOMETRY 0
  23 #endif
  24
  25 #if wxUSE_GEOMETRY
  26
  27 #include "wx/utils.h"
  28 #include "wx/gdicmn.h"
  29 #include <math.h>
  30
  31 #ifdef __WXMSW__
  32     #define wxMulDivInt32( a , b , c ) ::MulDiv( a , b , c )
  33 #elif defined( __WXMAC__ )
  34     #include "Math64.h"
  35     #define wxMulDivInt32( a , b , c ) S32Set( S64Div( S64Multiply( S64Set(a) , S64Set(b) ) , S64Set(c) ) )
  36 #else
  37     #define wxMulDivInt32( a , b , c ) ((wxInt32)((a)*(((wxDouble)b)/((wxDouble)c))))
  38 #endif
  39
  40 class wxDataInputStream;
  41 class wxDataOutputStream;
  42
  43 // clipping from Cohen-Sutherland
  44
  45 enum wxOutCode
  46 {
  47     wxInside = 0x00 ,
  48     wxOutLeft = 0x01 ,
  49     wxOutRight = 0x02 ,
  50     wxOutTop = 0x08 ,
  51     wxOutBottom = 0x04
  52 };
  53
  54 // wxPoint2Ds represent a point or a vector in a 2d coordinate system
  55
  56 class WXDLLEXPORT wxPoint2DDouble
  57 {
  58 public :
  59     inline wxPoint2DDouble();
  60     inline wxPoint2DDouble( wxDouble x , wxDouble y );
  61     inline wxPoint2DDouble( const wxPoint2DDouble &pt );
  62
  63     // two different conversions to integers, floor and rounding
  64     inline void GetFloor( wxInt32 *x , wxInt32 *y );
  65     inline void GetRounded( wxInt32 *x , wxInt32 *y );
  66
  67     inline wxDouble GetVectorLength();
  68     inline wxDouble GetVectorAngle();
  69     void SetVectorLength( wxDouble length );
  70     void SetVectorAngle( wxDouble degrees );
  71     void SetPolarCoordinates( wxDouble angle , wxDouble length );
  72     // set the vector length to 1.0, preserving the angle
  73     void Normalize();
  74
  75     inline wxDouble GetDistance( const wxPoint2DDouble &pt );
  76     inline wxDouble GetDistanceSquare( const wxPoint2DDouble &pt );
  77     inline wxDouble GetDotProduct( const wxPoint2DDouble &vec );
  78     inline wxDouble GetCrossProduct( const wxPoint2DDouble &vec );
  79
  80     // the reflection of this point
  81     inline wxPoint2DDouble operator-();
  82
  83     inline wxPoint2DDouble& operator=(const wxPoint2DDouble& pt);
  84     inline wxPoint2DDouble& operator+=(const wxPoint2DDouble& pt);
  85     inline wxPoint2DDouble& operator-=(const wxPoint2DDouble& pt);
  86     inline wxPoint2DDouble& operator*=(const wxPoint2DDouble& pt);
  87     inline wxPoint2DDouble& operator*=(wxDouble n);
  88     inline wxPoint2DDouble& operator*=(wxInt32 n);
  89     inline wxPoint2DDouble& operator/=(const wxPoint2DDouble& pt);
  90     inline wxPoint2DDouble& operator/=(wxDouble n);
  91     inline wxPoint2DDouble& operator/=(wxInt32 n);
  92
  93     inline bool operator==(const wxPoint2DDouble& pt) const;
  94     inline bool operator!=(const wxPoint2DDouble& pt) const;
  95
  96     wxDouble m_x;
  97     wxDouble m_y;
  98 };
  99
 100 inline wxPoint2DDouble operator+(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 101 inline wxPoint2DDouble operator-(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 102 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 103 inline wxPoint2DDouble operator*(wxDouble n , const wxPoint2DDouble& pt);
 104 inline wxPoint2DDouble operator*(wxInt32 n , const wxPoint2DDouble& pt);
 105 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxDouble n);
 106 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxInt32 n);
 107 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 108 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxDouble n);
 109 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxInt32 n);
 110
 111 inline wxPoint2DDouble::wxPoint2DDouble()
 112 {
 113     m_x = 0.0;
 114     m_y = 0.0;
 115 }
 116
 117 inline wxPoint2DDouble::wxPoint2DDouble( wxDouble x , wxDouble y )
 118 {
 119     m_x = x;
 120     m_y = y;
 121 }
 122
 123 inline wxPoint2DDouble::wxPoint2DDouble( const wxPoint2DDouble &pt )
 124 {
 125     m_x = pt.m_x;
 126     m_y = pt.m_y;
 127 }
 128
 129 inline void wxPoint2DDouble::GetFloor( wxInt32 *x , wxInt32 *y )
 130 {
 131     *x = (wxInt32) floor( m_x );
 132     *y = (wxInt32) floor( m_y );
 133 }
 134
 135 inline void wxPoint2DDouble::GetRounded( wxInt32 *x , wxInt32 *y )
 136 {
 137     *x = (wxInt32) floor( m_x + 0.5 );
 138     *y = (wxInt32) floor( m_y + 0.5);
 139 }
 140
 141 inline wxDouble wxPoint2DDouble::GetDistance( const wxPoint2DDouble &pt )
 142 {
 143     return sqrt( GetDistanceSquare( pt ) );
 144 }
 145
 146 inline wxDouble wxPoint2DDouble::GetDistanceSquare( const wxPoint2DDouble &pt )
 147 {
 148     return ( (pt.m_x-m_x)*(pt.m_x-m_x) + (pt.m_y-m_y)*(pt.m_y-m_y) );
 149 }
 150
 151 inline wxDouble wxPoint2DDouble::GetDotProduct( const wxPoint2DDouble &vec )
 152 {
 153     return ( m_x * vec.m_x + m_y * vec.m_y );
 154 }
 155
 156 inline wxDouble wxPoint2DDouble::GetCrossProduct( const wxPoint2DDouble &vec )
 157 {
 158     return ( m_x * vec.m_y - vec.m_x * m_y );
 159 }
 160
 161 inline wxPoint2DDouble wxPoint2DDouble::operator-()
 162 {
 163     return wxPoint2DDouble( -m_x, -m_y);
 164 }
 165
 166 inline wxPoint2DDouble& wxPoint2DDouble::operator=(const wxPoint2DDouble& pt)
 167 {
 168     m_x = pt.m_x;
 169     m_y = pt.m_y;
 170     return *this;
 171 }
 172
 173 inline wxPoint2DDouble& wxPoint2DDouble::operator+=(const wxPoint2DDouble& pt)
 174 {
 175     m_x = m_x + pt.m_x;
 176     m_y = m_y + pt.m_y;
 177     return *this;
 178 }
 179
 180 inline wxPoint2DDouble& wxPoint2DDouble::operator-=(const wxPoint2DDouble& pt)
 181 {
 182     m_x = m_x - pt.m_x;
 183     m_y = m_y - pt.m_y;
 184     return *this;
 185 }
 186
 187 inline wxPoint2DDouble& wxPoint2DDouble::operator*=(const wxPoint2DDouble& pt)
 188 {
 189     m_x = m_x * pt.m_x;
 190     m_y = m_y * pt.m_y;
 191     return *this;
 192 }
 193
 194 inline wxPoint2DDouble& wxPoint2DDouble::operator/=(const wxPoint2DDouble& pt)
 195 {
 196     m_x = m_x / pt.m_x;
 197     m_y = m_y / pt.m_y;
 198     return *this;
 199 }
 200
 201 inline bool wxPoint2DDouble::operator==(const wxPoint2DDouble& pt) const
 202 {
 203     return m_x == pt.m_x && m_y == pt.m_y;
 204 }
 205
 206 inline bool wxPoint2DDouble::operator!=(const wxPoint2DDouble& pt) const
 207 {
 208     return m_x != pt.m_x || m_y != pt.m_y;
 209 }
 210
 211 inline wxPoint2DDouble operator+(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 212 {
 213     return wxPoint2DDouble( pt1.m_x + pt2.m_x , pt1.m_y + pt2.m_y );
 214 }
 215
 216 inline wxPoint2DDouble operator-(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 217 {
 218     return wxPoint2DDouble( pt1.m_x - pt2.m_x , pt1.m_y - pt2.m_y );
 219 }
 220
 221
 222 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 223 {
 224     return wxPoint2DDouble( pt1.m_x * pt2.m_x , pt1.m_y * pt2.m_y );
 225 }
 226
 227 inline wxPoint2DDouble operator*(wxDouble n , const wxPoint2DDouble& pt)
 228 {
 229     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 230 }
 231
 232 inline wxPoint2DDouble operator*(wxInt32 n , const wxPoint2DDouble& pt)
 233 {
 234     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 235 }
 236
 237 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxDouble n)
 238 {
 239     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 240 }
 241
 242 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxInt32 n)
 243 {
 244     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 245 }
 246
 247 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 248 {
 249     return wxPoint2DDouble( pt1.m_x / pt2.m_x , pt1.m_y / pt2.m_y );
 250 }
 251
 252 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxDouble n)
 253 {
 254     return wxPoint2DDouble( pt.m_x / n , pt.m_y / n );
 255 }
 256
 257 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxInt32 n)
 258 {
 259     return wxPoint2DDouble( pt.m_x / n , pt.m_y / n );
 260 }
 261
 262 // wxRect2Ds are a axis-aligned rectangles, each side of the rect is parallel to the x- or m_y- axis. The rectangle is either defined by the
 263 // top left and bottom right corner, or by the top left corner and size. A point is contained within the rectangle if
 264 // left <= x < right  and top <= m_y < bottom , thus it is a half open interval.
 265
 266 class WXDLLEXPORT wxRect2DDouble
 267 {
 268 public:
 269     wxRect2DDouble()
 270         { m_x = m_y = m_width = m_height = 0; }
 271     wxRect2DDouble(wxDouble x, wxDouble y, wxDouble w, wxDouble h)
 272         { m_x = x; m_y = y; m_width = w;  m_height = h; }
 273 /*
 274     wxRect2DDouble(const wxPoint2DDouble& topLeft, const wxPoint2DDouble& bottomRight);
 275     wxRect2DDouble(const wxPoint2DDouble& pos, const wxSize& size);
 276     wxRect2DDouble(const wxRect2DDouble& rect);
 277 */
 278         // single attribute accessors
 279
 280     inline wxPoint2DDouble GetPosition()
 281         { return wxPoint2DDouble(m_x, m_y); }
 282     inline wxSize GetSize()
 283         { return wxSize((int) m_width, (int) m_height); }
 284
 285     // for the edge and corner accessors there are two setters conterparts, the Set.. functions keep the other corners at their
 286         // position whenever sensible, the Move.. functions keep the size of the rect and move the other corners apropriately
 287
 288     inline wxDouble GetLeft() const { return m_x; }
 289     inline void SetLeft( wxDouble n ) { m_width += m_x - n; m_x = n; }
 290     inline void MoveLeftTo( wxDouble n ) { m_x = n; }
 291     inline wxDouble GetTop() const { return m_y; }
 292     inline void SetTop( wxDouble n ) { m_height += m_y - n; m_y = n; }
 293     inline void MoveTopTo( wxDouble n ) { m_y = n; }
 294     inline wxDouble GetBottom() const { return m_y + m_height; }
 295     inline void SetBottom( wxDouble n ) { m_height += n - (m_y+m_height);}
 296     inline void MoveBottomTo( wxDouble n ) { m_y = n - m_height; }
 297     inline wxDouble GetRight() const { return m_x + m_width; }
 298     inline void SetRight( wxDouble n ) { m_width += n - (m_x+m_width) ; }
 299     inline void MoveRightTo( wxDouble n ) { m_x = n - m_width; }
 300
 301     inline wxPoint2DDouble GetLeftTop() const
 302         { return wxPoint2DDouble( m_x , m_y ); }
 303     inline void SetLeftTop( const wxPoint2DDouble &pt )
 304         { m_width += m_x - pt.m_x; m_height += m_y - pt.m_y; m_x = pt.m_x; m_y = pt.m_y; }
 305     inline void MoveLeftTopTo( const wxPoint2DDouble &pt )
 306         { m_x = pt.m_x; m_y = pt.m_y; }
 307     inline wxPoint2DDouble GetLeftBottom() const
 308         { return wxPoint2DDouble( m_x , m_y + m_height ); }
 309     inline void SetLeftBottom( const wxPoint2DDouble &pt )
 310         { m_width += m_x - pt.m_x; m_height += pt.m_y - (m_y+m_height) ; m_x = pt.m_x; }
 311     inline void MoveLeftBottomTo( const wxPoint2DDouble &pt )
 312         { m_x = pt.m_x; m_y = pt.m_y - m_height; }
 313     inline wxPoint2DDouble GetRightTop() const
 314         { return wxPoint2DDouble( m_x+m_width , m_y ); }
 315     inline void SetRightTop( const wxPoint2DDouble &pt )
 316         { m_width += pt.m_x - ( m_x + m_width ); m_height += m_y - pt.m_y; m_y = pt.m_y; }
 317     inline void MoveRightTopTo( const wxPoint2DDouble &pt )
 318         { m_x = pt.m_x - m_width; m_y = pt.m_y; }
 319     inline wxPoint2DDouble GetRightBottom() const
 320         { return wxPoint2DDouble( m_x+m_width , m_y + m_height ); }
 321     inline void SetRightBottom( const wxPoint2DDouble &pt )
 322         { m_width += pt.m_x - ( m_x + m_width ); m_height += pt.m_y - (m_y+m_height);}
 323     inline void MoveRightBottomTo( const wxPoint2DDouble &pt )
 324         { m_x = pt.m_x - m_width; m_y = pt.m_y - m_height; }
 325     inline wxPoint2DDouble GetCentre() const
 326         { return wxPoint2DDouble( m_x+m_width/2 , m_y+m_height/2 ); }
 327     inline void SetCentre( const wxPoint2DDouble &pt )
 328         { MoveCentreTo( pt ); }    // since this is impossible without moving...
 329     inline void MoveCentreTo( const wxPoint2DDouble &pt )
 330         { m_x += pt.m_x - (m_x+m_width/2) , m_y += pt.m_y -(m_y+m_height/2); }
 331     inline wxOutCode GetOutcode( const wxPoint2DDouble &pt ) const
 332         { return (wxOutCode) (( ( pt.m_x < m_x ) ? wxOutLeft : 0 ) +
 333                      ( ( pt.m_x >= m_x + m_width ) ? wxOutRight : 0 ) +
 334                      ( ( pt.m_y < m_y ) ? wxOutTop : 0 )  +
 335                      ( ( pt.m_y >= m_y + m_height ) ? wxOutBottom : 0 )); }
 336     inline bool Contains( const wxPoint2DDouble &pt ) const
 337         { return  GetOutcode( pt ) == wxInside; }
 338     inline bool Contains( const wxRect2DDouble &rect ) const
 339         { return ( ( ( m_x <= rect.m_x ) && ( rect.m_x + rect.m_width <= m_x + m_width ) ) &&
 340                 ( ( m_y <= rect.m_y ) && ( rect.m_y + rect.m_height <= m_y + m_height ) ) ); }
 341     inline bool IsEmpty() const
 342         { return ( m_width <= 0 || m_height <= 0 ); }
 343     inline bool HaveEqualSize( const wxRect2DDouble &rect ) const
 344         { return ( rect.m_width == m_width && rect.m_height == m_height ); }
 345
 346     inline void Inset( wxDouble x , wxDouble y )
 347         { m_x += x; m_y += y; m_width -= 2 * x; m_height -= 2 * y; }
 348     inline void Inset( wxDouble left , wxDouble top ,wxDouble right , wxDouble bottom  )
 349         { m_x += left; m_y += top; m_width -= left + right; m_height -= top + bottom;}
 350     inline void Offset( const wxPoint2DDouble &pt )
 351         { m_x += pt.m_x; m_y += pt.m_y; }
 352
 353     void ConstrainTo( const wxRect2DDouble &rect );
 354
 355     inline wxPoint2DDouble Interpolate( wxInt32 widthfactor , wxInt32 heightfactor )
 356         { return wxPoint2DDouble( m_x + m_width * widthfactor , m_y + m_height * heightfactor ); }
 357
 358     static void Intersect( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest );
 359     inline void Intersect( const wxRect2DDouble &otherRect )
 360         { Intersect( *this , otherRect , this ); }
 361     inline wxRect2DDouble CreateIntersection( const wxRect2DDouble &otherRect ) const
 362         { wxRect2DDouble result; Intersect( *this , otherRect , &result); return result; }
 363     bool Intersects( const wxRect2DDouble &rect ) const;
 364
 365     static void Union( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest );
 366     void Union( const wxRect2DDouble &otherRect )
 367         { Union( *this , otherRect , this ); }
 368     void Union( const wxPoint2DDouble &pt );
 369     inline wxRect2DDouble CreateUnion( const wxRect2DDouble &otherRect ) const
 370         { wxRect2DDouble result; Union( *this , otherRect , &result); return result; }
 371
 372     inline void Scale( wxDouble f )
 373         { m_x *= f; m_y *= f; m_width *= f; m_height *= f;}
 374     inline void Scale( wxInt32 num , wxInt32 denum )
 375         { m_x *= ((wxDouble)num)/((wxDouble)denum); m_y *= ((wxDouble)num)/((wxDouble)denum);
 376                 m_width *= ((wxDouble)num)/((wxDouble)denum); m_height *= ((wxDouble)num)/((wxDouble)denum);}
 377
 378 /*
 379     wxRect2DDouble& operator = (const wxRect2DDouble& rect);
 380     bool operator == (const wxRect2DDouble& rect);
 381     bool operator != (const wxRect2DDouble& rect);
 382 */
 383
 384     wxDouble  m_x;
 385     wxDouble  m_y;
 386     wxDouble  m_width;
 387     wxDouble m_height;
 388 };
 389
 390 class WXDLLEXPORT wxPoint2DInt
 391 {
 392 public :
 393     inline wxPoint2DInt();
 394     inline wxPoint2DInt( wxInt32 x , wxInt32 y );
 395     inline wxPoint2DInt( const wxPoint2DInt &pt );
 396     inline wxPoint2DInt( const wxPoint &pt );
 397
 398     // noops for this class, just return the coords
 399     inline void GetFloor( wxInt32 *x , wxInt32 *y );
 400     inline void GetRounded( wxInt32 *x , wxInt32 *y );
 401
 402     inline wxDouble GetVectorLength();
 403            wxDouble GetVectorAngle();
 404     inline void SetVectorLength( wxDouble length );
 405            void SetVectorAngle( wxDouble degrees );
 406            void SetPolarCoordinates( wxInt32 angle , wxInt32 length );
 407     // set the vector length to 1.0, preserving the angle
 408     inline void Normalize();
 409
 410     inline wxDouble GetDistance( const wxPoint2DInt &pt ) const;
 411     inline wxDouble GetDistanceSquare( const wxPoint2DInt &pt ) const;
 412     inline wxInt32 GetDotProduct( const wxPoint2DInt &vec ) const;
 413     inline wxInt32 GetCrossProduct( const wxPoint2DInt &vec ) const;
 414
 415     // the reflection of this point
 416     inline wxPoint2DInt operator-();
 417
 418     inline wxPoint2DInt& operator=(const wxPoint2DInt& pt);
 419     inline wxPoint2DInt& operator+=(const wxPoint2DInt& pt);
 420     inline wxPoint2DInt& operator-=(const wxPoint2DInt& pt);
 421     inline wxPoint2DInt& operator*=(const wxPoint2DInt& pt);
 422     inline wxPoint2DInt& operator*=(wxDouble n);
 423     inline wxPoint2DInt& operator*=(wxInt32 n);
 424     inline wxPoint2DInt& operator/=(const wxPoint2DInt& pt);
 425     inline wxPoint2DInt& operator/=(wxDouble n);
 426     inline wxPoint2DInt& operator/=(wxInt32 n);
 427     inline operator wxPoint() const;
 428     inline bool operator==(const wxPoint2DInt& pt) const;
 429     inline bool operator!=(const wxPoint2DInt& pt) const;
 430
 431     void WriteTo( wxDataOutputStream &stream ) const;
 432     void ReadFrom( wxDataInputStream &stream );
 433
 434     wxInt32 m_x;
 435     wxInt32 m_y;
 436 };
 437
 438 wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
 439 wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
 440 wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
 441 wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt);
 442 wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt);
 443 wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n);
 444 wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n);
 445 wxPoint2DInt operator/(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
 446 wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n);
 447 wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n);
 448
 449 inline wxPoint2DInt::wxPoint2DInt()
 450 {
 451     m_x = 0;
 452     m_y = 0;
 453 }
 454
 455 inline wxPoint2DInt::wxPoint2DInt( wxInt32 x , wxInt32 y )
 456 {
 457     m_x = x;
 458     m_y = y;
 459 }
 460
 461 inline wxPoint2DInt::wxPoint2DInt( const wxPoint2DInt &pt )
 462 {
 463     m_x = pt.m_x;
 464     m_y = pt.m_y;
 465 }
 466
 467 inline wxPoint2DInt::wxPoint2DInt( const wxPoint &pt )
 468 {
 469     m_x = pt.x;
 470     m_y = pt.y;
 471 }
 472
 473 inline void wxPoint2DInt::GetFloor( wxInt32 *x , wxInt32 *y )
 474 {
 475     if ( x )
 476         *x = m_x;
 477     if ( y )
 478         *y = m_y;
 479 }
 480
 481 inline void wxPoint2DInt::GetRounded( wxInt32 *x , wxInt32 *y )
 482 {
 483     GetFloor(x, y);
 484 }
 485
 486 inline wxDouble wxPoint2DInt::GetVectorLength()
 487 {
 488     // cast needed MIPSpro compiler under SGI
 489     return sqrt( (double)(m_x)*(m_x) + (m_y)*(m_y) );
 490 }
 491
 492 inline void wxPoint2DInt::SetVectorLength( wxDouble length )
 493 {
 494     wxDouble before = GetVectorLength();
 495     m_x = (wxInt32)(m_x * length / before);
 496     m_y = (wxInt32)(m_y * length / before);
 497 }
 498
 499 inline void wxPoint2DInt::Normalize()
 500 {
 501     SetVectorLength( 1 );
 502 }
 503
 504 inline wxDouble wxPoint2DInt::GetDistance( const wxPoint2DInt &pt ) const
 505 {
 506     return sqrt( GetDistanceSquare( pt ) );
 507 }
 508
 509 inline wxDouble wxPoint2DInt::GetDistanceSquare( const wxPoint2DInt &pt ) const
 510 {
 511     return ( (pt.m_x-m_x)*(pt.m_x-m_x) + (pt.m_y-m_y)*(pt.m_y-m_y) );
 512 }
 513
 514 inline wxInt32 wxPoint2DInt::GetDotProduct( const wxPoint2DInt &vec ) const
 515 {
 516     return ( m_x * vec.m_x + m_y * vec.m_y );
 517 }
 518
 519 inline wxInt32 wxPoint2DInt::GetCrossProduct( const wxPoint2DInt &vec ) const
 520 {
 521     return ( m_x * vec.m_y - vec.m_x * m_y );
 522 }
 523
 524 inline wxPoint2DInt::operator wxPoint() const
 525 {
 526     return wxPoint( m_x, m_y);
 527 }
 528
 529 inline wxPoint2DInt wxPoint2DInt::operator-()
 530 {
 531     return wxPoint2DInt( -m_x, -m_y);
 532 }
 533
 534 inline wxPoint2DInt& wxPoint2DInt::operator=(const wxPoint2DInt& pt)
 535 {
 536     m_x = pt.m_x;
 537     m_y = pt.m_y;
 538     return *this;
 539 }
 540
 541 inline wxPoint2DInt& wxPoint2DInt::operator+=(const wxPoint2DInt& pt)
 542 {
 543     m_x = m_x + pt.m_x;
 544     m_y = m_y + pt.m_y;
 545     return *this;
 546 }
 547
 548 inline wxPoint2DInt& wxPoint2DInt::operator-=(const wxPoint2DInt& pt)
 549 {
 550     m_x = m_x - pt.m_x;
 551     m_y = m_y - pt.m_y;
 552     return *this;
 553 }
 554
 555 inline wxPoint2DInt& wxPoint2DInt::operator*=(const wxPoint2DInt& pt)
 556 {
 557     m_x = m_x + pt.m_x;
 558     m_y = m_y + pt.m_y;
 559     return *this;
 560 }
 561
 562 inline wxPoint2DInt& wxPoint2DInt::operator/=(const wxPoint2DInt& pt)
 563 {
 564     m_x = m_x - pt.m_x;
 565     m_y = m_y - pt.m_y;
 566     return *this;
 567 }
 568
 569 inline bool wxPoint2DInt::operator==(const wxPoint2DInt& pt) const
 570 {
 571     return m_x == pt.m_x && m_y == pt.m_y;
 572 }
 573
 574 inline bool wxPoint2DInt::operator!=(const wxPoint2DInt& pt) const
 575 {
 576     return m_x != pt.m_x || m_y != pt.m_y;
 577 }
 578
 579 inline wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 580 {
 581     return wxPoint2DInt( pt1.m_x + pt2.m_x , pt1.m_y + pt2.m_y );
 582 }
 583
 584 inline wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 585 {
 586     return wxPoint2DInt( pt1.m_x - pt2.m_x , pt1.m_y - pt2.m_y );
 587 }
 588
 589
 590 inline wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 591 {
 592     return wxPoint2DInt( pt1.m_x * pt2.m_x , pt1.m_y * pt2.m_y );
 593 }
 594
 595 inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt)
 596 {
 597     return wxPoint2DInt( pt.m_x * n , pt.m_y * n );
 598 }
 599
 600 inline wxPoint2DInt operator*(wxDouble n , const wxPoint2DInt& pt)
 601 {
 602     return wxPoint2DInt( (int) (pt.m_x * n) , (int) (pt.m_y * n) );
 603 }
 604
 605 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n)
 606 {
 607     return wxPoint2DInt( pt.m_x * n , pt.m_y * n );
 608 }
 609
 610 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxDouble n)
 611 {
 612     return wxPoint2DInt( (int) (pt.m_x * n) , (int) (pt.m_y * n) );
 613 }
 614
 615 inline wxPoint2DInt operator/(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 616 {
 617     return wxPoint2DInt( pt1.m_x / pt2.m_x , pt1.m_y / pt2.m_y );
 618 }
 619
 620 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n)
 621 {
 622     return wxPoint2DInt( pt.m_x / n , pt.m_y / n );
 623 }
 624
 625 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxDouble n)
 626 {
 627     return wxPoint2DInt( (int) (pt.m_x / n) , (int) (pt.m_y / n) );
 628 }
 629
 630 // 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
 631 // top left and bottom right corner, or by the top left corner and size. A point is contained within the rectangle if
 632 // left <= x < right  and top <= m_y < bottom , thus it is a half open interval.
 633
 634 class WXDLLEXPORT wxRect2DInt
 635 {
 636 public:
 637        wxRect2DInt() { m_x = m_y = m_width = m_height = 0; }
 638        wxRect2DInt(wxInt32 x, wxInt32 y, wxInt32 w, wxInt32 h) { m_x = x; m_y = y; m_width = w;  m_height = h; }
 639        wxRect2DInt(const wxPoint2DInt& topLeft, const wxPoint2DInt& bottomRight);
 640        inline wxRect2DInt(const wxPoint2DInt& pos, const wxSize& size);
 641        inline wxRect2DInt(const wxRect2DInt& rect);
 642
 643         // single attribute accessors
 644
 645       inline wxPoint2DInt GetPosition() { return wxPoint2DInt(m_x, m_y); }
 646        inline wxSize GetSize() { return wxSize(m_width, m_height); }
 647
 648         // for the edge and corner accessors there are two setters conterparts, the Set.. functions keep the other corners at their
 649         // position whenever sensible, the Move.. functions keep the size of the rect and move the other corners apropriately
 650
 651       inline wxInt32 GetLeft() const { return m_x; }
 652        inline void SetLeft( wxInt32 n ) { m_width += m_x - n; m_x = n; }
 653        inline void MoveLeftTo( wxInt32 n ) { m_x = n; }
 654        inline wxInt32 GetTop() const { return m_y; }
 655        inline void SetTop( wxInt32 n ) { m_height += m_y - n; m_y = n; }
 656        inline void MoveTopTo( wxInt32 n ) { m_y = n; }
 657        inline wxInt32 GetBottom() const { return m_y + m_height; }
 658        inline void SetBottom( wxInt32 n ) { m_height += n - (m_y+m_height);}
 659        inline void MoveBottomTo( wxInt32 n ) { m_y = n - m_height; }
 660        inline wxInt32 GetRight() const { return m_x + m_width; }
 661        inline void SetRight( wxInt32 n ) { m_width += n - (m_x+m_width) ; }
 662        inline void MoveRightTo( wxInt32 n ) { m_x = n - m_width; }
 663
 664         inline wxPoint2DInt GetLeftTop() const { return wxPoint2DInt( m_x , m_y ); }
 665         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; }
 666         inline void MoveLeftTopTo( const wxPoint2DInt &pt ) { m_x = pt.m_x; m_y = pt.m_y; }
 667         inline wxPoint2DInt GetLeftBottom() const { return wxPoint2DInt( m_x , m_y + m_height ); }
 668         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; }
 669         inline void MoveLeftBottomTo( const wxPoint2DInt &pt ) { m_x = pt.m_x; m_y = pt.m_y - m_height; }
 670         inline wxPoint2DInt GetRightTop() const { return wxPoint2DInt( m_x+m_width , m_y ); }
 671         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; }
 672         inline void MoveRightTopTo( const wxPoint2DInt &pt ) { m_x = pt.m_x - m_width; m_y = pt.m_y; }
 673         inline wxPoint2DInt GetRightBottom() const { return wxPoint2DInt( m_x+m_width , m_y + m_height ); }
 674         inline void SetRightBottom( const wxPoint2DInt &pt ) { m_width += pt.m_x - ( m_x + m_width ); m_height += pt.m_y - (m_y+m_height);}
 675         inline void MoveRightBottomTo( const wxPoint2DInt &pt ) { m_x = pt.m_x - m_width; m_y = pt.m_y - m_height; }
 676         inline wxPoint2DInt GetCentre() const { return wxPoint2DInt( m_x+m_width/2 , m_y+m_height/2 ); }
 677         inline void SetCentre( const wxPoint2DInt &pt ) { MoveCentreTo( pt ); }    // since this is impossible without moving...
 678         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); }
 679         inline wxOutCode GetOutcode( const wxPoint2DInt &pt ) const
 680             { return (wxOutCode) (( ( pt.m_x < m_x ) ? wxOutLeft : 0 ) +
 681                      ( ( pt.m_x >= m_x + m_width ) ? wxOutRight : 0 ) +
 682                      ( ( pt.m_y < m_y ) ? wxOutTop : 0 )  +
 683                      ( ( pt.m_y >= m_y + m_height ) ? wxOutBottom : 0 )); }
 684         inline bool Contains( const wxPoint2DInt &pt ) const
 685             { return  GetOutcode( pt ) == wxInside; }
 686         inline bool Contains( const wxRect2DInt &rect ) const
 687             { return ( ( ( m_x <= rect.m_x ) && ( rect.m_x + rect.m_width <= m_x + m_width ) ) &&
 688                 ( ( m_y <= rect.m_y ) && ( rect.m_y + rect.m_height <= m_y + m_height ) ) ); }
 689         inline bool IsEmpty() const
 690             { return ( m_width <= 0 || m_height <= 0 ); }
 691         inline bool HaveEqualSize( const wxRect2DInt &rect ) const
 692             { return ( rect.m_width == m_width && rect.m_height == m_height ); }
 693
 694         inline void Inset( wxInt32 x , wxInt32 y ) { m_x += x; m_y += y; m_width -= 2 * x; m_height -= 2 * y; }
 695         inline void Inset( wxInt32 left , wxInt32 top ,wxInt32 right , wxInt32 bottom  )
 696             { m_x += left; m_y += top; m_width -= left + right; m_height -= top + bottom;}
 697         inline void Offset( const wxPoint2DInt &pt ) { m_x += pt.m_x; m_y += pt.m_y; }
 698         void ConstrainTo( const wxRect2DInt &rect );
 699         inline wxPoint2DInt Interpolate( wxInt32 widthfactor , wxInt32 heightfactor ) { return wxPoint2DInt( m_x + m_width * widthfactor , m_y + m_height * heightfactor ); }
 700
 701         static void Intersect( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest );
 702         inline void Intersect( const wxRect2DInt &otherRect ) { Intersect( *this , otherRect , this ); }
 703         inline wxRect2DInt CreateIntersection( const wxRect2DInt &otherRect ) const { wxRect2DInt result; Intersect( *this , otherRect , &result); return result; }
 704         bool Intersects( const wxRect2DInt &rect ) const;
 705
 706         static void Union( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest );
 707         void Union( const wxRect2DInt &otherRect )  { Union( *this , otherRect , this ); }
 708         void Union( const wxPoint2DInt &pt );
 709         inline wxRect2DInt CreateUnion( const wxRect2DInt &otherRect ) const { wxRect2DInt result; Union( *this , otherRect , &result); return result; }
 710
 711         inline void Scale( wxInt32 f ) { m_x *= f; m_y *= f; m_width *= f; m_height *= f;}
 712         inline void Scale( wxInt32 num , wxInt32 denum )
 713             { m_x *= ((wxInt32)num)/((wxInt32)denum); m_y *= ((wxInt32)num)/((wxInt32)denum);
 714                 m_width *= ((wxInt32)num)/((wxInt32)denum); m_height *= ((wxInt32)num)/((wxInt32)denum);}
 715
 716        wxRect2DInt& operator = (const wxRect2DInt& rect);
 717        bool operator == (const wxRect2DInt& rect);
 718        bool operator != (const wxRect2DInt& rect);
 719
 720         void WriteTo( wxDataOutputStream &stream ) const;
 721         void ReadFrom( wxDataInputStream &stream );
 722
 723        wxInt32 m_x;
 724         wxInt32 m_y;
 725         wxInt32 m_width;
 726         wxInt32 m_height;
 727 };
 728
 729 inline wxRect2DInt::wxRect2DInt( const wxRect2DInt &r )
 730 {
 731     m_x = r.m_x;
 732     m_y = r.m_y;
 733     m_width = r.m_width;
 734     m_height = r.m_height;
 735 }
 736
 737 inline wxRect2DInt::wxRect2DInt( const wxPoint2DInt &a , const wxPoint2DInt &b)
 738 {
 739     m_x = wxMin( a.m_x , b.m_x );
 740     m_y = wxMin( a.m_y , b.m_y );
 741     m_width = abs( a.m_x - b.m_x );
 742     m_height = abs( a.m_y - b.m_y );
 743 }
 744
 745 class wxTransform2D
 746 {
 747 public :
 748     virtual void                    Transform( wxPoint2DInt* pt )const  = 0;
 749     virtual void                    Transform( wxRect2DInt* r ) const;
 750     virtual wxPoint2DInt    Transform( const wxPoint2DInt &pt ) const;
 751     virtual wxRect2DInt        Transform( const wxRect2DInt &r ) const ;
 752
 753     virtual void                    InverseTransform( wxPoint2DInt* pt ) const  = 0;
 754     virtual void                    InverseTransform( wxRect2DInt* r ) const ;
 755     virtual wxPoint2DInt    InverseTransform( const wxPoint2DInt &pt ) const ;
 756     virtual wxRect2DInt        InverseTransform( const wxRect2DInt &r ) const ;
 757 };
 758
 759 inline void    wxTransform2D::Transform( wxRect2DInt* r ) const
 760     { wxPoint2DInt a = r->GetLeftTop() , b = r->GetRightBottom(); Transform( &a ); Transform( &b ); *r = wxRect2DInt( a , b ); }
 761
 762 inline wxPoint2DInt    wxTransform2D::Transform( const wxPoint2DInt &pt ) const
 763     { wxPoint2DInt res = pt; Transform( &res ); return res; }
 764
 765 inline wxRect2DInt     wxTransform2D::Transform( const wxRect2DInt &r ) const
 766     { wxRect2DInt res = r; Transform( &res ); return res; }
 767
 768 inline void    wxTransform2D::InverseTransform( wxRect2DInt* r ) const
 769     { wxPoint2DInt a = r->GetLeftTop() , b = r->GetRightBottom(); InverseTransform( &a ); InverseTransform( &b ); *r = wxRect2DInt( a , b ); }
 770
 771 inline wxPoint2DInt    wxTransform2D::InverseTransform( const wxPoint2DInt &pt ) const
 772     { wxPoint2DInt res = pt; InverseTransform( &res ); return res; }
 773
 774 inline wxRect2DInt     wxTransform2D::InverseTransform( const wxRect2DInt &r ) const
 775     { wxRect2DInt res = r; InverseTransform( &res ); return res; }
 776
 777
 778 #endif // wxUSE_GEOMETRY
 779
 780 #endif // _WX_GEOMETRY_H_