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     #ifndef __DARWIN__
  35         #include "Math64.h"
  36     #endif
  37     #define wxMulDivInt32( a , b , c ) S32Set( S64Div( S64Multiply( S64Set(a) , S64Set(b) ) , S64Set(c) ) )
  38 #else
  39     #define wxMulDivInt32( a , b , c ) ((wxInt32)((a)*(((wxDouble)b)/((wxDouble)c))))
  40 #endif
  41
  42 class wxDataInputStream;
  43 class wxDataOutputStream;
  44
  45 // clipping from Cohen-Sutherland
  46
  47 enum wxOutCode
  48 {
  49     wxInside = 0x00 ,
  50     wxOutLeft = 0x01 ,
  51     wxOutRight = 0x02 ,
  52     wxOutTop = 0x08 ,
  53     wxOutBottom = 0x04
  54 };
  55
  56 // wxPoint2Ds represent a point or a vector in a 2d coordinate system
  57
  58 class WXDLLEXPORT wxPoint2DDouble
  59 {
  60 public :
  61     inline wxPoint2DDouble();
  62     inline wxPoint2DDouble( wxDouble x , wxDouble y );
  63     inline wxPoint2DDouble( const wxPoint2DDouble &pt );
  64
  65     // two different conversions to integers, floor and rounding
  66     inline void GetFloor( wxInt32 *x , wxInt32 *y );
  67     inline void GetRounded( wxInt32 *x , wxInt32 *y );
  68
  69     inline wxDouble GetVectorLength();
  70     inline wxDouble GetVectorAngle();
  71     void SetVectorLength( wxDouble length );
  72     void SetVectorAngle( wxDouble degrees );
  73     void SetPolarCoordinates( wxDouble angle , wxDouble length );
  74     // set the vector length to 1.0, preserving the angle
  75     void Normalize();
  76
  77     inline wxDouble GetDistance( const wxPoint2DDouble &pt );
  78     inline wxDouble GetDistanceSquare( const wxPoint2DDouble &pt );
  79     inline wxDouble GetDotProduct( const wxPoint2DDouble &vec );
  80     inline wxDouble GetCrossProduct( const wxPoint2DDouble &vec );
  81
  82     // the reflection of this point
  83     inline wxPoint2DDouble operator-();
  84
  85     inline wxPoint2DDouble& operator=(const wxPoint2DDouble& pt);
  86     inline wxPoint2DDouble& operator+=(const wxPoint2DDouble& pt);
  87     inline wxPoint2DDouble& operator-=(const wxPoint2DDouble& pt);
  88     inline wxPoint2DDouble& operator*=(const wxPoint2DDouble& pt);
  89     inline wxPoint2DDouble& operator*=(wxDouble n);
  90     inline wxPoint2DDouble& operator*=(wxInt32 n);
  91     inline wxPoint2DDouble& operator/=(const wxPoint2DDouble& pt);
  92     inline wxPoint2DDouble& operator/=(wxDouble n);
  93     inline wxPoint2DDouble& operator/=(wxInt32 n);
  94
  95     inline bool operator==(const wxPoint2DDouble& pt) const;
  96     inline bool operator!=(const wxPoint2DDouble& pt) const;
  97
  98     wxDouble m_x;
  99     wxDouble m_y;
 100 };
 101
 102 wxPoint2DDouble operator+(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 103 wxPoint2DDouble operator-(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 104 wxPoint2DDouble operator*(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 105 wxPoint2DDouble operator*(wxDouble n , const wxPoint2DDouble& pt);
 106 wxPoint2DDouble operator*(wxInt32 n , const wxPoint2DDouble& pt);
 107 wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxDouble n);
 108 wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxInt32 n);
 109 wxPoint2DDouble operator/(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
 110 wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxDouble n);
 111 wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxInt32 n);
 112
 113 inline wxPoint2DDouble::wxPoint2DDouble()
 114 {
 115     m_x = 0.0;
 116     m_y = 0.0;
 117 }
 118
 119 inline wxPoint2DDouble::wxPoint2DDouble( wxDouble x , wxDouble y )
 120 {
 121     m_x = x;
 122     m_y = y;
 123 }
 124
 125 inline wxPoint2DDouble::wxPoint2DDouble( const wxPoint2DDouble &pt )
 126 {
 127     m_x = pt.m_x;
 128     m_y = pt.m_y;
 129 }
 130
 131 inline void wxPoint2DDouble::GetFloor( wxInt32 *x , wxInt32 *y )
 132 {
 133     *x = (wxInt32) floor( m_x );
 134     *y = (wxInt32) floor( m_y );
 135 }
 136
 137 inline void wxPoint2DDouble::GetRounded( wxInt32 *x , wxInt32 *y )
 138 {
 139     *x = (wxInt32) floor( m_x + 0.5 );
 140     *y = (wxInt32) floor( m_y + 0.5);
 141 }
 142
 143 inline wxDouble wxPoint2DDouble::GetDistance( const wxPoint2DDouble &pt )
 144 {
 145     return sqrt( GetDistanceSquare( pt ) );
 146 }
 147
 148 inline wxDouble wxPoint2DDouble::GetDistanceSquare( const wxPoint2DDouble &pt )
 149 {
 150     return ( (pt.m_x-m_x)*(pt.m_x-m_x) + (pt.m_y-m_y)*(pt.m_y-m_y) );
 151 }
 152
 153 inline wxDouble wxPoint2DDouble::GetDotProduct( const wxPoint2DDouble &vec )
 154 {
 155     return ( m_x * vec.m_x + m_y * vec.m_y );
 156 }
 157
 158 inline wxDouble wxPoint2DDouble::GetCrossProduct( const wxPoint2DDouble &vec )
 159 {
 160     return ( m_x * vec.m_y - vec.m_x * m_y );
 161 }
 162
 163 inline wxPoint2DDouble wxPoint2DDouble::operator-()
 164 {
 165     return wxPoint2DDouble( -m_x, -m_y);
 166 }
 167
 168 inline wxPoint2DDouble& wxPoint2DDouble::operator=(const wxPoint2DDouble& pt)
 169 {
 170     m_x = pt.m_x;
 171     m_y = pt.m_y;
 172     return *this;
 173 }
 174
 175 inline wxPoint2DDouble& wxPoint2DDouble::operator+=(const wxPoint2DDouble& pt)
 176 {
 177     m_x = m_x + pt.m_x;
 178     m_y = m_y + pt.m_y;
 179     return *this;
 180 }
 181
 182 inline wxPoint2DDouble& wxPoint2DDouble::operator-=(const wxPoint2DDouble& pt)
 183 {
 184     m_x = m_x - pt.m_x;
 185     m_y = m_y - pt.m_y;
 186     return *this;
 187 }
 188
 189 inline wxPoint2DDouble& wxPoint2DDouble::operator*=(const wxPoint2DDouble& pt)
 190 {
 191     m_x = m_x * pt.m_x;
 192     m_y = m_y * pt.m_y;
 193     return *this;
 194 }
 195
 196 inline wxPoint2DDouble& wxPoint2DDouble::operator/=(const wxPoint2DDouble& pt)
 197 {
 198     m_x = m_x / pt.m_x;
 199     m_y = m_y / pt.m_y;
 200     return *this;
 201 }
 202
 203 inline bool wxPoint2DDouble::operator==(const wxPoint2DDouble& pt) const
 204 {
 205     return m_x == pt.m_x && m_y == pt.m_y;
 206 }
 207
 208 inline bool wxPoint2DDouble::operator!=(const wxPoint2DDouble& pt) const
 209 {
 210     return m_x != pt.m_x || m_y != pt.m_y;
 211 }
 212
 213 inline wxPoint2DDouble operator+(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 214 {
 215     return wxPoint2DDouble( pt1.m_x + pt2.m_x , pt1.m_y + pt2.m_y );
 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
 224 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 225 {
 226     return wxPoint2DDouble( pt1.m_x * pt2.m_x , pt1.m_y * pt2.m_y );
 227 }
 228
 229 inline wxPoint2DDouble operator*(wxDouble n , const wxPoint2DDouble& pt)
 230 {
 231     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 232 }
 233
 234 inline wxPoint2DDouble operator*(wxInt32 n , const wxPoint2DDouble& pt)
 235 {
 236     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 237 }
 238
 239 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxDouble n)
 240 {
 241     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 242 }
 243
 244 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxInt32 n)
 245 {
 246     return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
 247 }
 248
 249 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
 250 {
 251     return wxPoint2DDouble( pt1.m_x / pt2.m_x , pt1.m_y / pt2.m_y );
 252 }
 253
 254 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxDouble n)
 255 {
 256     return wxPoint2DDouble( pt.m_x / n , pt.m_y / n );
 257 }
 258
 259 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxInt32 n)
 260 {
 261     return wxPoint2DDouble( pt.m_x / n , pt.m_y / n );
 262 }
 263
 264 // 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
 265 // top left and bottom right corner, or by the top left corner and size. A point is contained within the rectangle if
 266 // left <= x < right  and top <= m_y < bottom , thus it is a half open interval.
 267
 268 class WXDLLEXPORT wxRect2DDouble
 269 {
 270 public:
 271     wxRect2DDouble()
 272         { m_x = m_y = m_width = m_height = 0; }
 273     wxRect2DDouble(wxDouble x, wxDouble y, wxDouble w, wxDouble h)
 274         { m_x = x; m_y = y; m_width = w;  m_height = h; }
 275 /*
 276     wxRect2DDouble(const wxPoint2DDouble& topLeft, const wxPoint2DDouble& bottomRight);
 277     wxRect2DDouble(const wxPoint2DDouble& pos, const wxSize& size);
 278     wxRect2DDouble(const wxRect2DDouble& rect);
 279 */
 280         // single attribute accessors
 281
 282     inline wxPoint2DDouble GetPosition()
 283         { return wxPoint2DDouble(m_x, m_y); }
 284     inline wxSize GetSize()
 285         { return wxSize((int) m_width, (int) m_height); }
 286
 287     // for the edge and corner accessors there are two setters conterparts, the Set.. functions keep the other corners at their
 288         // position whenever sensible, the Move.. functions keep the size of the rect and move the other corners apropriately
 289
 290     inline wxDouble GetLeft() const { return m_x; }
 291     inline void SetLeft( wxDouble n ) { m_width += m_x - n; m_x = n; }
 292     inline void MoveLeftTo( wxDouble n ) { m_x = n; }
 293     inline wxDouble GetTop() const { return m_y; }
 294     inline void SetTop( wxDouble n ) { m_height += m_y - n; m_y = n; }
 295     inline void MoveTopTo( wxDouble n ) { m_y = n; }
 296     inline wxDouble GetBottom() const { return m_y + m_height; }
 297     inline void SetBottom( wxDouble n ) { m_height += n - (m_y+m_height);}
 298     inline void MoveBottomTo( wxDouble n ) { m_y = n - m_height; }
 299     inline wxDouble GetRight() const { return m_x + m_width; }
 300     inline void SetRight( wxDouble n ) { m_width += n - (m_x+m_width) ; }
 301     inline void MoveRightTo( wxDouble n ) { m_x = n - m_width; }
 302
 303     inline wxPoint2DDouble GetLeftTop() const
 304         { return wxPoint2DDouble( m_x , m_y ); }
 305     inline void SetLeftTop( const wxPoint2DDouble &pt )
 306         { m_width += m_x - pt.m_x; m_height += m_y - pt.m_y; m_x = pt.m_x; m_y = pt.m_y; }
 307     inline void MoveLeftTopTo( const wxPoint2DDouble &pt )
 308         { m_x = pt.m_x; m_y = pt.m_y; }
 309     inline wxPoint2DDouble GetLeftBottom() const
 310         { return wxPoint2DDouble( m_x , m_y + m_height ); }
 311     inline void SetLeftBottom( const wxPoint2DDouble &pt )
 312         { m_width += m_x - pt.m_x; m_height += pt.m_y - (m_y+m_height) ; m_x = pt.m_x; }
 313     inline void MoveLeftBottomTo( const wxPoint2DDouble &pt )
 314         { m_x = pt.m_x; m_y = pt.m_y - m_height; }
 315     inline wxPoint2DDouble GetRightTop() const
 316         { return wxPoint2DDouble( m_x+m_width , m_y ); }
 317     inline void SetRightTop( const wxPoint2DDouble &pt )
 318         { m_width += pt.m_x - ( m_x + m_width ); m_height += m_y - pt.m_y; m_y = pt.m_y; }
 319     inline void MoveRightTopTo( const wxPoint2DDouble &pt )
 320         { m_x = pt.m_x - m_width; m_y = pt.m_y; }
 321     inline wxPoint2DDouble GetRightBottom() const
 322         { return wxPoint2DDouble( m_x+m_width , m_y + m_height ); }
 323     inline void SetRightBottom( const wxPoint2DDouble &pt )
 324         { m_width += pt.m_x - ( m_x + m_width ); m_height += pt.m_y - (m_y+m_height);}
 325     inline void MoveRightBottomTo( const wxPoint2DDouble &pt )
 326         { m_x = pt.m_x - m_width; m_y = pt.m_y - m_height; }
 327     inline wxPoint2DDouble GetCentre() const
 328         { return wxPoint2DDouble( m_x+m_width/2 , m_y+m_height/2 ); }
 329     inline void SetCentre( const wxPoint2DDouble &pt )
 330         { MoveCentreTo( pt ); }    // since this is impossible without moving...
 331     inline void MoveCentreTo( const wxPoint2DDouble &pt )
 332         { m_x += pt.m_x - (m_x+m_width/2) , m_y += pt.m_y -(m_y+m_height/2); }
 333     inline wxOutCode GetOutcode( const wxPoint2DDouble &pt ) const
 334         { return (wxOutCode) (( ( pt.m_x < m_x ) ? wxOutLeft : 0 ) +
 335                      ( ( pt.m_x >= m_x + m_width ) ? wxOutRight : 0 ) +
 336                      ( ( pt.m_y < m_y ) ? wxOutTop : 0 )  +
 337                      ( ( pt.m_y >= m_y + m_height ) ? wxOutBottom : 0 )); }
 338     inline bool Contains( const wxPoint2DDouble &pt ) const
 339         { return  GetOutcode( pt ) == wxInside; }
 340     inline bool Contains( const wxRect2DDouble &rect ) const
 341         { return ( ( ( m_x <= rect.m_x ) && ( rect.m_x + rect.m_width <= m_x + m_width ) ) &&
 342                 ( ( m_y <= rect.m_y ) && ( rect.m_y + rect.m_height <= m_y + m_height ) ) ); }
 343     inline bool IsEmpty() const
 344         { return ( m_width <= 0 || m_height <= 0 ); }
 345     inline bool HaveEqualSize( const wxRect2DDouble &rect ) const
 346         { return ( rect.m_width == m_width && rect.m_height == m_height ); }
 347
 348     inline void Inset( wxDouble x , wxDouble y )
 349         { m_x += x; m_y += y; m_width -= 2 * x; m_height -= 2 * y; }
 350     inline void Inset( wxDouble left , wxDouble top ,wxDouble right , wxDouble bottom  )
 351         { m_x += left; m_y += top; m_width -= left + right; m_height -= top + bottom;}
 352     inline void Offset( const wxPoint2DDouble &pt )
 353         { m_x += pt.m_x; m_y += pt.m_y; }
 354
 355     void ConstrainTo( const wxRect2DDouble &rect );
 356
 357     inline wxPoint2DDouble Interpolate( wxInt32 widthfactor , wxInt32 heightfactor )
 358         { return wxPoint2DDouble( m_x + m_width * widthfactor , m_y + m_height * heightfactor ); }
 359
 360     static void Intersect( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest );
 361     inline void Intersect( const wxRect2DDouble &otherRect )
 362         { Intersect( *this , otherRect , this ); }
 363     inline wxRect2DDouble CreateIntersection( const wxRect2DDouble &otherRect ) const
 364         { wxRect2DDouble result; Intersect( *this , otherRect , &result); return result; }
 365     bool Intersects( const wxRect2DDouble &rect ) const;
 366
 367     static void Union( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest );
 368     void Union( const wxRect2DDouble &otherRect )
 369         { Union( *this , otherRect , this ); }
 370     void Union( const wxPoint2DDouble &pt );
 371     inline wxRect2DDouble CreateUnion( const wxRect2DDouble &otherRect ) const
 372         { wxRect2DDouble result; Union( *this , otherRect , &result); return result; }
 373
 374     inline void Scale( wxDouble f )
 375         { m_x *= f; m_y *= f; m_width *= f; m_height *= f;}
 376     inline void Scale( wxInt32 num , wxInt32 denum )
 377         { m_x *= ((wxDouble)num)/((wxDouble)denum); m_y *= ((wxDouble)num)/((wxDouble)denum);
 378                 m_width *= ((wxDouble)num)/((wxDouble)denum); m_height *= ((wxDouble)num)/((wxDouble)denum);}
 379
 380 /*
 381     wxRect2DDouble& operator = (const wxRect2DDouble& rect);
 382     bool operator == (const wxRect2DDouble& rect);
 383     bool operator != (const wxRect2DDouble& rect);
 384 */
 385
 386     wxDouble  m_x;
 387     wxDouble  m_y;
 388     wxDouble  m_width;
 389     wxDouble m_height;
 390 };
 391
 392 class WXDLLEXPORT wxPoint2DInt
 393 {
 394 public :
 395     inline wxPoint2DInt();
 396     inline wxPoint2DInt( wxInt32 x , wxInt32 y );
 397     inline wxPoint2DInt( const wxPoint2DInt &pt );
 398     inline wxPoint2DInt( const wxPoint &pt );
 399
 400     // noops for this class, just return the coords
 401     inline void GetFloor( wxInt32 *x , wxInt32 *y );
 402     inline void GetRounded( wxInt32 *x , wxInt32 *y );
 403
 404     inline wxDouble GetVectorLength();
 405            wxDouble GetVectorAngle();
 406     inline void SetVectorLength( wxDouble length );
 407            void SetVectorAngle( wxDouble degrees );
 408            void SetPolarCoordinates( wxInt32 angle , wxInt32 length );
 409     // set the vector length to 1.0, preserving the angle
 410     inline void Normalize();
 411
 412     inline wxDouble GetDistance( const wxPoint2DInt &pt ) const;
 413     inline wxDouble GetDistanceSquare( const wxPoint2DInt &pt ) const;
 414     inline wxInt32 GetDotProduct( const wxPoint2DInt &vec ) const;
 415     inline wxInt32 GetCrossProduct( const wxPoint2DInt &vec ) const;
 416
 417     // the reflection of this point
 418     inline wxPoint2DInt operator-();
 419
 420     inline wxPoint2DInt& operator=(const wxPoint2DInt& pt);
 421     inline wxPoint2DInt& operator+=(const wxPoint2DInt& pt);
 422     inline wxPoint2DInt& operator-=(const wxPoint2DInt& pt);
 423     inline wxPoint2DInt& operator*=(const wxPoint2DInt& pt);
 424     inline wxPoint2DInt& operator*=(wxDouble n);
 425     inline wxPoint2DInt& operator*=(wxInt32 n);
 426     inline wxPoint2DInt& operator/=(const wxPoint2DInt& pt);
 427     inline wxPoint2DInt& operator/=(wxDouble n);
 428     inline wxPoint2DInt& operator/=(wxInt32 n);
 429     inline operator wxPoint() const;
 430     inline bool operator==(const wxPoint2DInt& pt) const;
 431     inline bool operator!=(const wxPoint2DInt& pt) const;
 432
 433     void WriteTo( wxDataOutputStream &stream ) const;
 434     void ReadFrom( wxDataInputStream &stream );
 435
 436     wxInt32 m_x;
 437     wxInt32 m_y;
 438 };
 439
 440 wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
 441 wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
 442 wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
 443 wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt);
 444 wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt);
 445 wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n);
 446 wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n);
 447 wxPoint2DInt operator/(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
 448 wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n);
 449 wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n);
 450
 451 inline wxPoint2DInt::wxPoint2DInt()
 452 {
 453     m_x = 0;
 454     m_y = 0;
 455 }
 456
 457 inline wxPoint2DInt::wxPoint2DInt( wxInt32 x , wxInt32 y )
 458 {
 459     m_x = x;
 460     m_y = y;
 461 }
 462
 463 inline wxPoint2DInt::wxPoint2DInt( const wxPoint2DInt &pt )
 464 {
 465     m_x = pt.m_x;
 466     m_y = pt.m_y;
 467 }
 468
 469 inline wxPoint2DInt::wxPoint2DInt( const wxPoint &pt )
 470 {
 471     m_x = pt.x;
 472     m_y = pt.y;
 473 }
 474
 475 inline void wxPoint2DInt::GetFloor( wxInt32 *x , wxInt32 *y )
 476 {
 477     if ( x )
 478         *x = m_x;
 479     if ( y )
 480         *y = m_y;
 481 }
 482
 483 inline void wxPoint2DInt::GetRounded( wxInt32 *x , wxInt32 *y )
 484 {
 485     GetFloor(x, y);
 486 }
 487
 488 inline wxDouble wxPoint2DInt::GetVectorLength()
 489 {
 490     // cast needed MIPSpro compiler under SGI
 491     return sqrt( (double)(m_x)*(m_x) + (m_y)*(m_y) );
 492 }
 493
 494 inline void wxPoint2DInt::SetVectorLength( wxDouble length )
 495 {
 496     wxDouble before = GetVectorLength();
 497     m_x = (wxInt32)(m_x * length / before);
 498     m_y = (wxInt32)(m_y * length / before);
 499 }
 500
 501 inline void wxPoint2DInt::Normalize()
 502 {
 503     SetVectorLength( 1 );
 504 }
 505
 506 inline wxDouble wxPoint2DInt::GetDistance( const wxPoint2DInt &pt ) const
 507 {
 508     return sqrt( GetDistanceSquare( pt ) );
 509 }
 510
 511 inline wxDouble wxPoint2DInt::GetDistanceSquare( const wxPoint2DInt &pt ) const
 512 {
 513     return ( (pt.m_x-m_x)*(pt.m_x-m_x) + (pt.m_y-m_y)*(pt.m_y-m_y) );
 514 }
 515
 516 inline wxInt32 wxPoint2DInt::GetDotProduct( const wxPoint2DInt &vec ) const
 517 {
 518     return ( m_x * vec.m_x + m_y * vec.m_y );
 519 }
 520
 521 inline wxInt32 wxPoint2DInt::GetCrossProduct( const wxPoint2DInt &vec ) const
 522 {
 523     return ( m_x * vec.m_y - vec.m_x * m_y );
 524 }
 525
 526 inline wxPoint2DInt::operator wxPoint() const
 527 {
 528     return wxPoint( m_x, m_y);
 529 }
 530
 531 inline wxPoint2DInt wxPoint2DInt::operator-()
 532 {
 533     return wxPoint2DInt( -m_x, -m_y);
 534 }
 535
 536 inline wxPoint2DInt& wxPoint2DInt::operator=(const wxPoint2DInt& pt)
 537 {
 538     m_x = pt.m_x;
 539     m_y = pt.m_y;
 540     return *this;
 541 }
 542
 543 inline wxPoint2DInt& wxPoint2DInt::operator+=(const wxPoint2DInt& pt)
 544 {
 545     m_x = m_x + pt.m_x;
 546     m_y = m_y + pt.m_y;
 547     return *this;
 548 }
 549
 550 inline wxPoint2DInt& wxPoint2DInt::operator-=(const wxPoint2DInt& pt)
 551 {
 552     m_x = m_x - pt.m_x;
 553     m_y = m_y - pt.m_y;
 554     return *this;
 555 }
 556
 557 inline wxPoint2DInt& wxPoint2DInt::operator*=(const wxPoint2DInt& pt)
 558 {
 559     m_x = m_x + pt.m_x;
 560     m_y = m_y + pt.m_y;
 561     return *this;
 562 }
 563
 564 inline wxPoint2DInt& wxPoint2DInt::operator/=(const wxPoint2DInt& pt)
 565 {
 566     m_x = m_x - pt.m_x;
 567     m_y = m_y - pt.m_y;
 568     return *this;
 569 }
 570
 571 inline bool wxPoint2DInt::operator==(const wxPoint2DInt& pt) const
 572 {
 573     return m_x == pt.m_x && m_y == pt.m_y;
 574 }
 575
 576 inline bool wxPoint2DInt::operator!=(const wxPoint2DInt& pt) const
 577 {
 578     return m_x != pt.m_x || m_y != pt.m_y;
 579 }
 580
 581 inline wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 582 {
 583     return wxPoint2DInt( pt1.m_x + pt2.m_x , pt1.m_y + pt2.m_y );
 584 }
 585
 586 inline wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 587 {
 588     return wxPoint2DInt( pt1.m_x - pt2.m_x , pt1.m_y - pt2.m_y );
 589 }
 590
 591
 592 inline wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 593 {
 594     return wxPoint2DInt( pt1.m_x * pt2.m_x , pt1.m_y * pt2.m_y );
 595 }
 596
 597 inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt)
 598 {
 599     return wxPoint2DInt( pt.m_x * n , pt.m_y * n );
 600 }
 601
 602 inline wxPoint2DInt operator*(wxDouble n , const wxPoint2DInt& pt)
 603 {
 604     return wxPoint2DInt( (int) (pt.m_x * n) , (int) (pt.m_y * n) );
 605 }
 606
 607 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n)
 608 {
 609     return wxPoint2DInt( pt.m_x * n , pt.m_y * n );
 610 }
 611
 612 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxDouble n)
 613 {
 614     return wxPoint2DInt( (int) (pt.m_x * n) , (int) (pt.m_y * n) );
 615 }
 616
 617 inline wxPoint2DInt operator/(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
 618 {
 619     return wxPoint2DInt( pt1.m_x / pt2.m_x , pt1.m_y / pt2.m_y );
 620 }
 621
 622 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n)
 623 {
 624     return wxPoint2DInt( pt.m_x / n , pt.m_y / n );
 625 }
 626
 627 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxDouble n)
 628 {
 629     return wxPoint2DInt( (int) (pt.m_x / n) , (int) (pt.m_y / n) );
 630 }
 631
 632 // 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
 633 // top left and bottom right corner, or by the top left corner and size. A point is contained within the rectangle if
 634 // left <= x < right  and top <= m_y < bottom , thus it is a half open interval.
 635
 636 class WXDLLEXPORT wxRect2DInt
 637 {
 638 public:
 639        wxRect2DInt() { m_x = m_y = m_width = m_height = 0; }
 640        wxRect2DInt(wxInt32 x, wxInt32 y, wxInt32 w, wxInt32 h) { m_x = x; m_y = y; m_width = w;  m_height = h; }
 641        wxRect2DInt(const wxPoint2DInt& topLeft, const wxPoint2DInt& bottomRight);
 642        inline wxRect2DInt(const wxPoint2DInt& pos, const wxSize& size);
 643        inline wxRect2DInt(const wxRect2DInt& rect);
 644
 645         // single attribute accessors
 646
 647       inline wxPoint2DInt GetPosition() { return wxPoint2DInt(m_x, m_y); }
 648        inline wxSize GetSize() { return wxSize(m_width, m_height); }
 649
 650         // for the edge and corner accessors there are two setters conterparts, the Set.. functions keep the other corners at their
 651         // position whenever sensible, the Move.. functions keep the size of the rect and move the other corners apropriately
 652
 653       inline wxInt32 GetLeft() const { return m_x; }
 654        inline void SetLeft( wxInt32 n ) { m_width += m_x - n; m_x = n; }
 655        inline void MoveLeftTo( wxInt32 n ) { m_x = n; }
 656        inline wxInt32 GetTop() const { return m_y; }
 657        inline void SetTop( wxInt32 n ) { m_height += m_y - n; m_y = n; }
 658        inline void MoveTopTo( wxInt32 n ) { m_y = n; }
 659        inline wxInt32 GetBottom() const { return m_y + m_height; }
 660        inline void SetBottom( wxInt32 n ) { m_height += n - (m_y+m_height);}
 661        inline void MoveBottomTo( wxInt32 n ) { m_y = n - m_height; }
 662        inline wxInt32 GetRight() const { return m_x + m_width; }
 663        inline void SetRight( wxInt32 n ) { m_width += n - (m_x+m_width) ; }
 664        inline void MoveRightTo( wxInt32 n ) { m_x = n - m_width; }
 665
 666         inline wxPoint2DInt GetLeftTop() const { return wxPoint2DInt( m_x , m_y ); }
 667         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; }
 668         inline void MoveLeftTopTo( const wxPoint2DInt &pt ) { m_x = pt.m_x; m_y = pt.m_y; }
 669         inline wxPoint2DInt GetLeftBottom() const { return wxPoint2DInt( m_x , m_y + m_height ); }
 670         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; }
 671         inline void MoveLeftBottomTo( const wxPoint2DInt &pt ) { m_x = pt.m_x; m_y = pt.m_y - m_height; }
 672         inline wxPoint2DInt GetRightTop() const { return wxPoint2DInt( m_x+m_width , m_y ); }
 673         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; }
 674         inline void MoveRightTopTo( const wxPoint2DInt &pt ) { m_x = pt.m_x - m_width; m_y = pt.m_y; }
 675         inline wxPoint2DInt GetRightBottom() const { return wxPoint2DInt( m_x+m_width , m_y + m_height ); }
 676         inline void SetRightBottom( const wxPoint2DInt &pt ) { m_width += pt.m_x - ( m_x + m_width ); m_height += pt.m_y - (m_y+m_height);}
 677         inline void MoveRightBottomTo( const wxPoint2DInt &pt ) { m_x = pt.m_x - m_width; m_y = pt.m_y - m_height; }
 678         inline wxPoint2DInt GetCentre() const { return wxPoint2DInt( m_x+m_width/2 , m_y+m_height/2 ); }
 679         inline void SetCentre( const wxPoint2DInt &pt ) { MoveCentreTo( pt ); }    // since this is impossible without moving...
 680         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); }
 681         inline wxOutCode GetOutcode( const wxPoint2DInt &pt ) const
 682             { return (wxOutCode) (( ( pt.m_x < m_x ) ? wxOutLeft : 0 ) +
 683                      ( ( pt.m_x >= m_x + m_width ) ? wxOutRight : 0 ) +
 684                      ( ( pt.m_y < m_y ) ? wxOutTop : 0 )  +
 685                      ( ( pt.m_y >= m_y + m_height ) ? wxOutBottom : 0 )); }
 686         inline bool Contains( const wxPoint2DInt &pt ) const
 687             { return  GetOutcode( pt ) == wxInside; }
 688         inline bool Contains( const wxRect2DInt &rect ) const
 689             { return ( ( ( m_x <= rect.m_x ) && ( rect.m_x + rect.m_width <= m_x + m_width ) ) &&
 690                 ( ( m_y <= rect.m_y ) && ( rect.m_y + rect.m_height <= m_y + m_height ) ) ); }
 691         inline bool IsEmpty() const
 692             { return ( m_width <= 0 || m_height <= 0 ); }
 693         inline bool HaveEqualSize( const wxRect2DInt &rect ) const
 694             { return ( rect.m_width == m_width && rect.m_height == m_height ); }
 695
 696         inline void Inset( wxInt32 x , wxInt32 y ) { m_x += x; m_y += y; m_width -= 2 * x; m_height -= 2 * y; }
 697         inline void Inset( wxInt32 left , wxInt32 top ,wxInt32 right , wxInt32 bottom  )
 698             { m_x += left; m_y += top; m_width -= left + right; m_height -= top + bottom;}
 699         inline void Offset( const wxPoint2DInt &pt ) { m_x += pt.m_x; m_y += pt.m_y; }
 700         void ConstrainTo( const wxRect2DInt &rect );
 701         inline wxPoint2DInt Interpolate( wxInt32 widthfactor , wxInt32 heightfactor ) { return wxPoint2DInt( m_x + m_width * widthfactor , m_y + m_height * heightfactor ); }
 702
 703         static void Intersect( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest );
 704         inline void Intersect( const wxRect2DInt &otherRect ) { Intersect( *this , otherRect , this ); }
 705         inline wxRect2DInt CreateIntersection( const wxRect2DInt &otherRect ) const { wxRect2DInt result; Intersect( *this , otherRect , &result); return result; }
 706         bool Intersects( const wxRect2DInt &rect ) const;
 707
 708         static void Union( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest );
 709         void Union( const wxRect2DInt &otherRect )  { Union( *this , otherRect , this ); }
 710         void Union( const wxPoint2DInt &pt );
 711         inline wxRect2DInt CreateUnion( const wxRect2DInt &otherRect ) const { wxRect2DInt result; Union( *this , otherRect , &result); return result; }
 712
 713         inline void Scale( wxInt32 f ) { m_x *= f; m_y *= f; m_width *= f; m_height *= f;}
 714         inline void Scale( wxInt32 num , wxInt32 denum )
 715             { m_x *= ((wxInt32)num)/((wxInt32)denum); m_y *= ((wxInt32)num)/((wxInt32)denum);
 716                 m_width *= ((wxInt32)num)/((wxInt32)denum); m_height *= ((wxInt32)num)/((wxInt32)denum);}
 717
 718        wxRect2DInt& operator = (const wxRect2DInt& rect);
 719        bool operator == (const wxRect2DInt& rect);
 720        bool operator != (const wxRect2DInt& rect);
 721
 722         void WriteTo( wxDataOutputStream &stream ) const;
 723         void ReadFrom( wxDataInputStream &stream );
 724
 725        wxInt32 m_x;
 726         wxInt32 m_y;
 727         wxInt32 m_width;
 728         wxInt32 m_height;
 729 };
 730
 731 inline wxRect2DInt::wxRect2DInt( const wxRect2DInt &r )
 732 {
 733     m_x = r.m_x;
 734     m_y = r.m_y;
 735     m_width = r.m_width;
 736     m_height = r.m_height;
 737 }
 738
 739 inline wxRect2DInt::wxRect2DInt( const wxPoint2DInt &a , const wxPoint2DInt &b)
 740 {
 741     m_x = wxMin( a.m_x , b.m_x );
 742     m_y = wxMin( a.m_y , b.m_y );
 743     m_width = abs( a.m_x - b.m_x );
 744     m_height = abs( a.m_y - b.m_y );
 745 }
 746
 747 class wxTransform2D
 748 {
 749 public :
 750     virtual void                    Transform( wxPoint2DInt* pt )const  = 0;
 751     virtual void                    Transform( wxRect2DInt* r ) const;
 752     virtual wxPoint2DInt    Transform( const wxPoint2DInt &pt ) const;
 753     virtual wxRect2DInt        Transform( const wxRect2DInt &r ) const ;
 754
 755     virtual void                    InverseTransform( wxPoint2DInt* pt ) const  = 0;
 756     virtual void                    InverseTransform( wxRect2DInt* r ) const ;
 757     virtual wxPoint2DInt    InverseTransform( const wxPoint2DInt &pt ) const ;
 758     virtual wxRect2DInt        InverseTransform( const wxRect2DInt &r ) const ;
 759 };
 760
 761 inline void    wxTransform2D::Transform( wxRect2DInt* r ) const
 762     { wxPoint2DInt a = r->GetLeftTop() , b = r->GetRightBottom(); Transform( &a ); Transform( &b ); *r = wxRect2DInt( a , b ); }
 763
 764 inline wxPoint2DInt    wxTransform2D::Transform( const wxPoint2DInt &pt ) const
 765     { wxPoint2DInt res = pt; Transform( &res ); return res; }
 766
 767 inline wxRect2DInt     wxTransform2D::Transform( const wxRect2DInt &r ) const
 768     { wxRect2DInt res = r; Transform( &res ); return res; }
 769
 770 inline void    wxTransform2D::InverseTransform( wxRect2DInt* r ) const
 771     { wxPoint2DInt a = r->GetLeftTop() , b = r->GetRightBottom(); InverseTransform( &a ); InverseTransform( &b ); *r = wxRect2DInt( a , b ); }
 772
 773 inline wxPoint2DInt    wxTransform2D::InverseTransform( const wxPoint2DInt &pt ) const
 774     { wxPoint2DInt res = pt; InverseTransform( &res ); return res; }
 775
 776 inline wxRect2DInt     wxTransform2D::InverseTransform( const wxRect2DInt &r ) const
 777     { wxRect2DInt res = r; InverseTransform( &res ); return res; }
 778
 779
 780 #endif // wxUSE_GEOMETRY
 781
 782 #endif // _WX_GEOMETRY_H_