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[wxWidgets.git] / 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: $Id$
8 // Copyright: (c) 1999 Stefan Csomor
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 #ifndef _WX_GEOMETRY_H_
13 #define _WX_GEOMETRY_H_
14
15 #include "wx/defs.h"
16
17 #if wxUSE_GEOMETRY
18
19 #include "wx/utils.h"
20 #include "wx/gdicmn.h"
21 #include "wx/math.h"
22
23 class WXDLLIMPEXP_FWD_BASE wxDataInputStream;
24 class WXDLLIMPEXP_FWD_BASE wxDataOutputStream;
25
26 // clipping from Cohen-Sutherland
27
28 enum wxOutCode
29 {
30 wxInside = 0x00 ,
31 wxOutLeft = 0x01 ,
32 wxOutRight = 0x02 ,
33 wxOutTop = 0x08 ,
34 wxOutBottom = 0x04
35 };
36
37 class WXDLLIMPEXP_CORE wxPoint2DInt
38 {
39 public :
40 inline wxPoint2DInt();
41 inline wxPoint2DInt( wxInt32 x , wxInt32 y );
42 inline wxPoint2DInt( const wxPoint2DInt &pt );
43 inline wxPoint2DInt( const wxPoint &pt );
44
45 // noops for this class, just return the coords
46 inline void GetFloor( wxInt32 *x , wxInt32 *y ) const;
47 inline void GetRounded( wxInt32 *x , wxInt32 *y ) const;
48
49 inline wxDouble GetVectorLength() const;
50 wxDouble GetVectorAngle() const;
51 inline void SetVectorLength( wxDouble length );
52 void SetVectorAngle( wxDouble degrees );
53 void SetPolarCoordinates( wxInt32 angle , wxInt32 length );
54 // set the vector length to 1.0, preserving the angle
55 inline void Normalize();
56
57 inline wxDouble GetDistance( const wxPoint2DInt &pt ) const;
58 inline wxDouble GetDistanceSquare( const wxPoint2DInt &pt ) const;
59 inline wxInt32 GetDotProduct( const wxPoint2DInt &vec ) const;
60 inline wxInt32 GetCrossProduct( const wxPoint2DInt &vec ) const;
61
62 // the reflection of this point
63 inline wxPoint2DInt operator-();
64
65 inline wxPoint2DInt& operator=(const wxPoint2DInt& pt);
66 inline wxPoint2DInt& operator+=(const wxPoint2DInt& pt);
67 inline wxPoint2DInt& operator-=(const wxPoint2DInt& pt);
68 inline wxPoint2DInt& operator*=(const wxPoint2DInt& pt);
69 inline wxPoint2DInt& operator*=(wxDouble n);
70 inline wxPoint2DInt& operator*=(wxInt32 n);
71 inline wxPoint2DInt& operator/=(const wxPoint2DInt& pt);
72 inline wxPoint2DInt& operator/=(wxDouble n);
73 inline wxPoint2DInt& operator/=(wxInt32 n);
74 inline operator wxPoint() const;
75 inline bool operator==(const wxPoint2DInt& pt) const;
76 inline bool operator!=(const wxPoint2DInt& pt) const;
77
78 #if wxUSE_STREAMS
79 void WriteTo( wxDataOutputStream &stream ) const;
80 void ReadFrom( wxDataInputStream &stream );
81 #endif // wxUSE_STREAMS
82
83 wxInt32 m_x;
84 wxInt32 m_y;
85 };
86
87 inline wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
88 inline wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
89 inline wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
90 inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt);
91 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n);
92 inline wxPoint2DInt operator/(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2);
93 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n);
94
95 inline wxPoint2DInt::wxPoint2DInt()
96 {
97 m_x = 0;
98 m_y = 0;
99 }
100
101 inline wxPoint2DInt::wxPoint2DInt( wxInt32 x , wxInt32 y )
102 {
103 m_x = x;
104 m_y = y;
105 }
106
107 inline wxPoint2DInt::wxPoint2DInt( const wxPoint2DInt &pt )
108 {
109 m_x = pt.m_x;
110 m_y = pt.m_y;
111 }
112
113 inline wxPoint2DInt::wxPoint2DInt( const wxPoint &pt )
114 {
115 m_x = pt.x;
116 m_y = pt.y;
117 }
118
119 inline void wxPoint2DInt::GetFloor( wxInt32 *x , wxInt32 *y ) const
120 {
121 if ( x )
122 *x = m_x;
123 if ( y )
124 *y = m_y;
125 }
126
127 inline void wxPoint2DInt::GetRounded( wxInt32 *x , wxInt32 *y ) const
128 {
129 GetFloor(x, y);
130 }
131
132 inline wxDouble wxPoint2DInt::GetVectorLength() const
133 {
134 // cast needed MIPSpro compiler under SGI
135 return sqrt( (double)(m_x)*(m_x) + (m_y)*(m_y) );
136 }
137
138 inline void wxPoint2DInt::SetVectorLength( wxDouble length )
139 {
140 wxDouble before = GetVectorLength();
141 m_x = (wxInt32)(m_x * length / before);
142 m_y = (wxInt32)(m_y * length / before);
143 }
144
145 inline void wxPoint2DInt::Normalize()
146 {
147 SetVectorLength( 1 );
148 }
149
150 inline wxDouble wxPoint2DInt::GetDistance( const wxPoint2DInt &pt ) const
151 {
152 return sqrt( GetDistanceSquare( pt ) );
153 }
154
155 inline wxDouble wxPoint2DInt::GetDistanceSquare( const wxPoint2DInt &pt ) const
156 {
157 return ( (pt.m_x-m_x)*(pt.m_x-m_x) + (pt.m_y-m_y)*(pt.m_y-m_y) );
158 }
159
160 inline wxInt32 wxPoint2DInt::GetDotProduct( const wxPoint2DInt &vec ) const
161 {
162 return ( m_x * vec.m_x + m_y * vec.m_y );
163 }
164
165 inline wxInt32 wxPoint2DInt::GetCrossProduct( const wxPoint2DInt &vec ) const
166 {
167 return ( m_x * vec.m_y - vec.m_x * m_y );
168 }
169
170 inline wxPoint2DInt::operator wxPoint() const
171 {
172 return wxPoint( m_x, m_y);
173 }
174
175 inline wxPoint2DInt wxPoint2DInt::operator-()
176 {
177 return wxPoint2DInt( -m_x, -m_y);
178 }
179
180 inline wxPoint2DInt& wxPoint2DInt::operator=(const wxPoint2DInt& pt)
181 {
182 if (this != &pt)
183 {
184 m_x = pt.m_x;
185 m_y = pt.m_y;
186 }
187 return *this;
188 }
189
190 inline wxPoint2DInt& wxPoint2DInt::operator+=(const wxPoint2DInt& pt)
191 {
192 m_x = m_x + pt.m_x;
193 m_y = m_y + pt.m_y;
194 return *this;
195 }
196
197 inline wxPoint2DInt& wxPoint2DInt::operator-=(const wxPoint2DInt& pt)
198 {
199 m_x = m_x - pt.m_x;
200 m_y = m_y - pt.m_y;
201 return *this;
202 }
203
204 inline wxPoint2DInt& wxPoint2DInt::operator*=(const wxPoint2DInt& pt)
205 {
206 m_x = m_x + pt.m_x;
207 m_y = m_y + pt.m_y;
208 return *this;
209 }
210
211 inline wxPoint2DInt& wxPoint2DInt::operator/=(const wxPoint2DInt& pt)
212 {
213 m_x = m_x - pt.m_x;
214 m_y = m_y - pt.m_y;
215 return *this;
216 }
217
218 inline bool wxPoint2DInt::operator==(const wxPoint2DInt& pt) const
219 {
220 return m_x == pt.m_x && m_y == pt.m_y;
221 }
222
223 inline bool wxPoint2DInt::operator!=(const wxPoint2DInt& pt) const
224 {
225 return m_x != pt.m_x || m_y != pt.m_y;
226 }
227
228 inline wxPoint2DInt operator+(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
229 {
230 return wxPoint2DInt( pt1.m_x + pt2.m_x , pt1.m_y + pt2.m_y );
231 }
232
233 inline wxPoint2DInt operator-(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
234 {
235 return wxPoint2DInt( pt1.m_x - pt2.m_x , pt1.m_y - pt2.m_y );
236 }
237
238
239 inline wxPoint2DInt operator*(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
240 {
241 return wxPoint2DInt( pt1.m_x * pt2.m_x , pt1.m_y * pt2.m_y );
242 }
243
244 inline wxPoint2DInt operator*(wxInt32 n , const wxPoint2DInt& pt)
245 {
246 return wxPoint2DInt( pt.m_x * n , pt.m_y * n );
247 }
248
249 inline wxPoint2DInt operator*(wxDouble n , const wxPoint2DInt& pt)
250 {
251 return wxPoint2DInt( (int) (pt.m_x * n) , (int) (pt.m_y * n) );
252 }
253
254 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxInt32 n)
255 {
256 return wxPoint2DInt( pt.m_x * n , pt.m_y * n );
257 }
258
259 inline wxPoint2DInt operator*(const wxPoint2DInt& pt , wxDouble n)
260 {
261 return wxPoint2DInt( (int) (pt.m_x * n) , (int) (pt.m_y * n) );
262 }
263
264 inline wxPoint2DInt operator/(const wxPoint2DInt& pt1 , const wxPoint2DInt& pt2)
265 {
266 return wxPoint2DInt( pt1.m_x / pt2.m_x , pt1.m_y / pt2.m_y );
267 }
268
269 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxInt32 n)
270 {
271 return wxPoint2DInt( pt.m_x / n , pt.m_y / n );
272 }
273
274 inline wxPoint2DInt operator/(const wxPoint2DInt& pt , wxDouble n)
275 {
276 return wxPoint2DInt( (int) (pt.m_x / n) , (int) (pt.m_y / n) );
277 }
278
279 // wxPoint2Ds represent a point or a vector in a 2d coordinate system
280
281 class WXDLLIMPEXP_CORE wxPoint2DDouble
282 {
283 public :
284 inline wxPoint2DDouble();
285 inline wxPoint2DDouble( wxDouble x , wxDouble y );
286 inline wxPoint2DDouble( const wxPoint2DDouble &pt );
287 wxPoint2DDouble( const wxPoint2DInt &pt )
288 { m_x = (wxDouble) pt.m_x ; m_y = (wxDouble) pt.m_y ; }
289 wxPoint2DDouble( const wxPoint &pt )
290 { m_x = (wxDouble) pt.x ; m_y = (wxDouble) pt.y ; }
291
292 // two different conversions to integers, floor and rounding
293 inline void GetFloor( wxInt32 *x , wxInt32 *y ) const;
294 inline void GetRounded( wxInt32 *x , wxInt32 *y ) const;
295
296 inline wxDouble GetVectorLength() const;
297 wxDouble GetVectorAngle() const ;
298 void SetVectorLength( wxDouble length );
299 void SetVectorAngle( wxDouble degrees );
300 void SetPolarCoordinates( wxDouble angle , wxDouble length );
301 // set the vector length to 1.0, preserving the angle
302 void Normalize();
303
304 inline wxDouble GetDistance( const wxPoint2DDouble &pt ) const;
305 inline wxDouble GetDistanceSquare( const wxPoint2DDouble &pt ) const;
306 inline wxDouble GetDotProduct( const wxPoint2DDouble &vec ) const;
307 inline wxDouble GetCrossProduct( const wxPoint2DDouble &vec ) const;
308
309 // the reflection of this point
310 inline wxPoint2DDouble operator-();
311
312 inline wxPoint2DDouble& operator=(const wxPoint2DDouble& pt);
313 inline wxPoint2DDouble& operator+=(const wxPoint2DDouble& pt);
314 inline wxPoint2DDouble& operator-=(const wxPoint2DDouble& pt);
315 inline wxPoint2DDouble& operator*=(const wxPoint2DDouble& pt);
316 inline wxPoint2DDouble& operator*=(wxDouble n);
317 inline wxPoint2DDouble& operator*=(wxInt32 n);
318 inline wxPoint2DDouble& operator/=(const wxPoint2DDouble& pt);
319 inline wxPoint2DDouble& operator/=(wxDouble n);
320 inline wxPoint2DDouble& operator/=(wxInt32 n);
321
322 inline bool operator==(const wxPoint2DDouble& pt) const;
323 inline bool operator!=(const wxPoint2DDouble& pt) const;
324
325 wxDouble m_x;
326 wxDouble m_y;
327 };
328
329 inline wxPoint2DDouble operator+(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
330 inline wxPoint2DDouble operator-(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
331 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
332 inline wxPoint2DDouble operator*(wxDouble n , const wxPoint2DDouble& pt);
333 inline wxPoint2DDouble operator*(wxInt32 n , const wxPoint2DDouble& pt);
334 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxDouble n);
335 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxInt32 n);
336 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2);
337 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxDouble n);
338 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxInt32 n);
339
340 inline wxPoint2DDouble::wxPoint2DDouble()
341 {
342 m_x = 0.0;
343 m_y = 0.0;
344 }
345
346 inline wxPoint2DDouble::wxPoint2DDouble( wxDouble x , wxDouble y )
347 {
348 m_x = x;
349 m_y = y;
350 }
351
352 inline wxPoint2DDouble::wxPoint2DDouble( const wxPoint2DDouble &pt )
353 {
354 m_x = pt.m_x;
355 m_y = pt.m_y;
356 }
357
358 inline void wxPoint2DDouble::GetFloor( wxInt32 *x , wxInt32 *y ) const
359 {
360 *x = (wxInt32) floor( m_x );
361 *y = (wxInt32) floor( m_y );
362 }
363
364 inline void wxPoint2DDouble::GetRounded( wxInt32 *x , wxInt32 *y ) const
365 {
366 *x = (wxInt32) floor( m_x + 0.5 );
367 *y = (wxInt32) floor( m_y + 0.5);
368 }
369
370 inline wxDouble wxPoint2DDouble::GetVectorLength() const
371 {
372 return sqrt( (m_x)*(m_x) + (m_y)*(m_y) ) ;
373 }
374
375 inline void wxPoint2DDouble::SetVectorLength( wxDouble length )
376 {
377 wxDouble before = GetVectorLength() ;
378 m_x = (m_x * length / before) ;
379 m_y = (m_y * length / before) ;
380 }
381
382 inline void wxPoint2DDouble::Normalize()
383 {
384 SetVectorLength( 1 );
385 }
386
387 inline wxDouble wxPoint2DDouble::GetDistance( const wxPoint2DDouble &pt ) const
388 {
389 return sqrt( GetDistanceSquare( pt ) );
390 }
391
392 inline wxDouble wxPoint2DDouble::GetDistanceSquare( const wxPoint2DDouble &pt ) const
393 {
394 return ( (pt.m_x-m_x)*(pt.m_x-m_x) + (pt.m_y-m_y)*(pt.m_y-m_y) );
395 }
396
397 inline wxDouble wxPoint2DDouble::GetDotProduct( const wxPoint2DDouble &vec ) const
398 {
399 return ( m_x * vec.m_x + m_y * vec.m_y );
400 }
401
402 inline wxDouble wxPoint2DDouble::GetCrossProduct( const wxPoint2DDouble &vec ) const
403 {
404 return ( m_x * vec.m_y - vec.m_x * m_y );
405 }
406
407 inline wxPoint2DDouble wxPoint2DDouble::operator-()
408 {
409 return wxPoint2DDouble( -m_x, -m_y);
410 }
411
412 inline wxPoint2DDouble& wxPoint2DDouble::operator=(const wxPoint2DDouble& pt)
413 {
414 if (this != &pt)
415 {
416 m_x = pt.m_x;
417 m_y = pt.m_y;
418 }
419 return *this;
420 }
421
422 inline wxPoint2DDouble& wxPoint2DDouble::operator+=(const wxPoint2DDouble& pt)
423 {
424 m_x = m_x + pt.m_x;
425 m_y = m_y + pt.m_y;
426 return *this;
427 }
428
429 inline wxPoint2DDouble& wxPoint2DDouble::operator-=(const wxPoint2DDouble& pt)
430 {
431 m_x = m_x - pt.m_x;
432 m_y = m_y - pt.m_y;
433 return *this;
434 }
435
436 inline wxPoint2DDouble& wxPoint2DDouble::operator*=(const wxPoint2DDouble& pt)
437 {
438 m_x = m_x * pt.m_x;
439 m_y = m_y * pt.m_y;
440 return *this;
441 }
442
443 inline wxPoint2DDouble& wxPoint2DDouble::operator/=(const wxPoint2DDouble& pt)
444 {
445 m_x = m_x / pt.m_x;
446 m_y = m_y / pt.m_y;
447 return *this;
448 }
449
450 inline bool wxPoint2DDouble::operator==(const wxPoint2DDouble& pt) const
451 {
452 return wxIsSameDouble(m_x, pt.m_x) && wxIsSameDouble(m_y, pt.m_y);
453 }
454
455 inline bool wxPoint2DDouble::operator!=(const wxPoint2DDouble& pt) const
456 {
457 return !(*this == pt);
458 }
459
460 inline wxPoint2DDouble operator+(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
461 {
462 return wxPoint2DDouble( pt1.m_x + pt2.m_x , pt1.m_y + pt2.m_y );
463 }
464
465 inline wxPoint2DDouble operator-(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
466 {
467 return wxPoint2DDouble( pt1.m_x - pt2.m_x , pt1.m_y - pt2.m_y );
468 }
469
470
471 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
472 {
473 return wxPoint2DDouble( pt1.m_x * pt2.m_x , pt1.m_y * pt2.m_y );
474 }
475
476 inline wxPoint2DDouble operator*(wxDouble n , const wxPoint2DDouble& pt)
477 {
478 return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
479 }
480
481 inline wxPoint2DDouble operator*(wxInt32 n , const wxPoint2DDouble& pt)
482 {
483 return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
484 }
485
486 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxDouble n)
487 {
488 return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
489 }
490
491 inline wxPoint2DDouble operator*(const wxPoint2DDouble& pt , wxInt32 n)
492 {
493 return wxPoint2DDouble( pt.m_x * n , pt.m_y * n );
494 }
495
496 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt1 , const wxPoint2DDouble& pt2)
497 {
498 return wxPoint2DDouble( pt1.m_x / pt2.m_x , pt1.m_y / pt2.m_y );
499 }
500
501 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxDouble n)
502 {
503 return wxPoint2DDouble( pt.m_x / n , pt.m_y / n );
504 }
505
506 inline wxPoint2DDouble operator/(const wxPoint2DDouble& pt , wxInt32 n)
507 {
508 return wxPoint2DDouble( pt.m_x / n , pt.m_y / n );
509 }
510
511 // 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
512 // top left and bottom right corner, or by the top left corner and size. A point is contained within the rectangle if
513 // left <= x < right and top <= m_y < bottom , thus it is a half open interval.
514
515 class WXDLLIMPEXP_CORE wxRect2DDouble
516 {
517 public:
518 wxRect2DDouble()
519 { m_x = m_y = m_width = m_height = 0; }
520 wxRect2DDouble(wxDouble x, wxDouble y, wxDouble w, wxDouble h)
521 { m_x = x; m_y = y; m_width = w; m_height = h; }
522 /*
523 wxRect2DDouble(const wxPoint2DDouble& topLeft, const wxPoint2DDouble& bottomRight);
524 wxRect2DDouble(const wxPoint2DDouble& pos, const wxSize& size);
525 wxRect2DDouble(const wxRect2DDouble& rect);
526 */
527 // single attribute accessors
528
529 wxPoint2DDouble GetPosition() const
530 { return wxPoint2DDouble(m_x, m_y); }
531 wxSize GetSize() const
532 { return wxSize((int) m_width, (int) m_height); }
533
534 // for the edge and corner accessors there are two setters counterparts, the Set.. functions keep the other corners at their
535 // position whenever sensible, the Move.. functions keep the size of the rect and move the other corners appropriately
536
537 inline wxDouble GetLeft() const { return m_x; }
538 inline void SetLeft( wxDouble n ) { m_width += m_x - n; m_x = n; }
539 inline void MoveLeftTo( wxDouble n ) { m_x = n; }
540 inline wxDouble GetTop() const { return m_y; }
541 inline void SetTop( wxDouble n ) { m_height += m_y - n; m_y = n; }
542 inline void MoveTopTo( wxDouble n ) { m_y = n; }
543 inline wxDouble GetBottom() const { return m_y + m_height; }
544 inline void SetBottom( wxDouble n ) { m_height += n - (m_y+m_height);}
545 inline void MoveBottomTo( wxDouble n ) { m_y = n - m_height; }
546 inline wxDouble GetRight() const { return m_x + m_width; }
547 inline void SetRight( wxDouble n ) { m_width += n - (m_x+m_width) ; }
548 inline void MoveRightTo( wxDouble n ) { m_x = n - m_width; }
549
550 inline wxPoint2DDouble GetLeftTop() const
551 { return wxPoint2DDouble( m_x , m_y ); }
552 inline void SetLeftTop( const wxPoint2DDouble &pt )
553 { m_width += m_x - pt.m_x; m_height += m_y - pt.m_y; m_x = pt.m_x; m_y = pt.m_y; }
554 inline void MoveLeftTopTo( const wxPoint2DDouble &pt )
555 { m_x = pt.m_x; m_y = pt.m_y; }
556 inline wxPoint2DDouble GetLeftBottom() const
557 { return wxPoint2DDouble( m_x , m_y + m_height ); }
558 inline void SetLeftBottom( const wxPoint2DDouble &pt )
559 { m_width += m_x - pt.m_x; m_height += pt.m_y - (m_y+m_height) ; m_x = pt.m_x; }
560 inline void MoveLeftBottomTo( const wxPoint2DDouble &pt )
561 { m_x = pt.m_x; m_y = pt.m_y - m_height; }
562 inline wxPoint2DDouble GetRightTop() const
563 { return wxPoint2DDouble( m_x+m_width , m_y ); }
564 inline void SetRightTop( const wxPoint2DDouble &pt )
565 { m_width += pt.m_x - ( m_x + m_width ); m_height += m_y - pt.m_y; m_y = pt.m_y; }
566 inline void MoveRightTopTo( const wxPoint2DDouble &pt )
567 { m_x = pt.m_x - m_width; m_y = pt.m_y; }
568 inline wxPoint2DDouble GetRightBottom() const
569 { return wxPoint2DDouble( m_x+m_width , m_y + m_height ); }
570 inline void SetRightBottom( const wxPoint2DDouble &pt )
571 { m_width += pt.m_x - ( m_x + m_width ); m_height += pt.m_y - (m_y+m_height);}
572 inline void MoveRightBottomTo( const wxPoint2DDouble &pt )
573 { m_x = pt.m_x - m_width; m_y = pt.m_y - m_height; }
574 inline wxPoint2DDouble GetCentre() const
575 { return wxPoint2DDouble( m_x+m_width/2 , m_y+m_height/2 ); }
576 inline void SetCentre( const wxPoint2DDouble &pt )
577 { MoveCentreTo( pt ); } // since this is impossible without moving...
578 inline void MoveCentreTo( const wxPoint2DDouble &pt )
579 { m_x += pt.m_x - (m_x+m_width/2) , m_y += pt.m_y -(m_y+m_height/2); }
580 inline wxOutCode GetOutCode( const wxPoint2DDouble &pt ) const
581 { return (wxOutCode) (( ( pt.m_x < m_x ) ? wxOutLeft : 0 ) +
582 ( ( pt.m_x > m_x + m_width ) ? wxOutRight : 0 ) +
583 ( ( pt.m_y < m_y ) ? wxOutTop : 0 ) +
584 ( ( pt.m_y > m_y + m_height ) ? wxOutBottom : 0 )); }
585 inline wxOutCode GetOutcode(const wxPoint2DDouble &pt) const
586 { return GetOutCode(pt) ; }
587 inline bool Contains( const wxPoint2DDouble &pt ) const
588 { return GetOutCode( pt ) == wxInside; }
589 inline bool Contains( const wxRect2DDouble &rect ) const
590 { return ( ( ( m_x <= rect.m_x ) && ( rect.m_x + rect.m_width <= m_x + m_width ) ) &&
591 ( ( m_y <= rect.m_y ) && ( rect.m_y + rect.m_height <= m_y + m_height ) ) ); }
592 inline bool IsEmpty() const
593 { return m_width <= 0 || m_height <= 0; }
594 inline bool HaveEqualSize( const wxRect2DDouble &rect ) const
595 { return wxIsSameDouble(rect.m_width, m_width) && wxIsSameDouble(rect.m_height, m_height); }
596
597 inline void Inset( wxDouble x , wxDouble y )
598 { m_x += x; m_y += y; m_width -= 2 * x; m_height -= 2 * y; }
599 inline void Inset( wxDouble left , wxDouble top ,wxDouble right , wxDouble bottom )
600 { m_x += left; m_y += top; m_width -= left + right; m_height -= top + bottom;}
601 inline void Offset( const wxPoint2DDouble &pt )
602 { m_x += pt.m_x; m_y += pt.m_y; }
603
604 void ConstrainTo( const wxRect2DDouble &rect );
605
606 inline wxPoint2DDouble Interpolate( wxInt32 widthfactor , wxInt32 heightfactor )
607 { return wxPoint2DDouble( m_x + m_width * widthfactor , m_y + m_height * heightfactor ); }
608
609 static void Intersect( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest );
610 inline void Intersect( const wxRect2DDouble &otherRect )
611 { Intersect( *this , otherRect , this ); }
612 inline wxRect2DDouble CreateIntersection( const wxRect2DDouble &otherRect ) const
613 { wxRect2DDouble result; Intersect( *this , otherRect , &result); return result; }
614 bool Intersects( const wxRect2DDouble &rect ) const;
615
616 static void Union( const wxRect2DDouble &src1 , const wxRect2DDouble &src2 , wxRect2DDouble *dest );
617 void Union( const wxRect2DDouble &otherRect )
618 { Union( *this , otherRect , this ); }
619 void Union( const wxPoint2DDouble &pt );
620 inline wxRect2DDouble CreateUnion( const wxRect2DDouble &otherRect ) const
621 { wxRect2DDouble result; Union( *this , otherRect , &result); return result; }
622
623 inline void Scale( wxDouble f )
624 { m_x *= f; m_y *= f; m_width *= f; m_height *= f;}
625 inline void Scale( wxInt32 num , wxInt32 denum )
626 { m_x *= ((wxDouble)num)/((wxDouble)denum); m_y *= ((wxDouble)num)/((wxDouble)denum);
627 m_width *= ((wxDouble)num)/((wxDouble)denum); m_height *= ((wxDouble)num)/((wxDouble)denum);}
628
629 wxRect2DDouble& operator = (const wxRect2DDouble& rect);
630 inline bool operator == (const wxRect2DDouble& rect) const
631 { return wxIsSameDouble(m_x, rect.m_x) && wxIsSameDouble(m_y, rect.m_y) && HaveEqualSize(rect); }
632 inline bool operator != (const wxRect2DDouble& rect) const
633 { return !(*this == rect); }
634
635 wxDouble m_x;
636 wxDouble m_y;
637 wxDouble m_width;
638 wxDouble m_height;
639 };
640
641
642 // 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
643 // top left and bottom right corner, or by the top left corner and size. A point is contained within the rectangle if
644 // left <= x < right and top <= m_y < bottom , thus it is a half open interval.
645
646 class WXDLLIMPEXP_CORE wxRect2DInt
647 {
648 public:
649 wxRect2DInt() { m_x = m_y = m_width = m_height = 0; }
650 wxRect2DInt( const wxRect& r ) { m_x = r.x ; m_y = r.y ; m_width = r.width ; m_height = r.height ; }
651 wxRect2DInt(wxInt32 x, wxInt32 y, wxInt32 w, wxInt32 h) { m_x = x; m_y = y; m_width = w; m_height = h; }
652 wxRect2DInt(const wxPoint2DInt& topLeft, const wxPoint2DInt& bottomRight);
653 inline wxRect2DInt(const wxPoint2DInt& pos, const wxSize& size);
654 inline wxRect2DInt(const wxRect2DInt& rect);
655
656 // single attribute accessors
657
658 wxPoint2DInt GetPosition() const { return wxPoint2DInt(m_x, m_y); }
659 wxSize GetSize() const { return wxSize(m_width, m_height); }
660
661 // for the edge and corner accessors there are two setters counterparts, the Set.. functions keep the other corners at their
662 // position whenever sensible, the Move.. functions keep the size of the rect and move the other corners appropriately
663
664 inline wxInt32 GetLeft() const { return m_x; }
665 inline void SetLeft( wxInt32 n ) { m_width += m_x - n; m_x = n; }
666 inline void MoveLeftTo( wxInt32 n ) { m_x = n; }
667 inline wxInt32 GetTop() const { return m_y; }
668 inline void SetTop( wxInt32 n ) { m_height += m_y - n; m_y = n; }
669 inline void MoveTopTo( wxInt32 n ) { m_y = n; }
670 inline wxInt32 GetBottom() const { return m_y + m_height; }
671 inline void SetBottom( wxInt32 n ) { m_height += n - (m_y+m_height);}
672 inline void MoveBottomTo( wxInt32 n ) { m_y = n - m_height; }
673 inline wxInt32 GetRight() const { return m_x + m_width; }
674 inline void SetRight( wxInt32 n ) { m_width += n - (m_x+m_width) ; }
675 inline void MoveRightTo( wxInt32 n ) { m_x = n - m_width; }
676
677 inline wxPoint2DInt GetLeftTop() const { return wxPoint2DInt( m_x , m_y ); }
678 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; }
679 inline void MoveLeftTopTo( const wxPoint2DInt &pt ) { m_x = pt.m_x; m_y = pt.m_y; }
680 inline wxPoint2DInt GetLeftBottom() const { return wxPoint2DInt( m_x , m_y + m_height ); }
681 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; }
682 inline void MoveLeftBottomTo( const wxPoint2DInt &pt ) { m_x = pt.m_x; m_y = pt.m_y - m_height; }
683 inline wxPoint2DInt GetRightTop() const { return wxPoint2DInt( m_x+m_width , m_y ); }
684 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; }
685 inline void MoveRightTopTo( const wxPoint2DInt &pt ) { m_x = pt.m_x - m_width; m_y = pt.m_y; }
686 inline wxPoint2DInt GetRightBottom() const { return wxPoint2DInt( m_x+m_width , m_y + m_height ); }
687 inline void SetRightBottom( const wxPoint2DInt &pt ) { m_width += pt.m_x - ( m_x + m_width ); m_height += pt.m_y - (m_y+m_height);}
688 inline void MoveRightBottomTo( const wxPoint2DInt &pt ) { m_x = pt.m_x - m_width; m_y = pt.m_y - m_height; }
689 inline wxPoint2DInt GetCentre() const { return wxPoint2DInt( m_x+m_width/2 , m_y+m_height/2 ); }
690 inline void SetCentre( const wxPoint2DInt &pt ) { MoveCentreTo( pt ); } // since this is impossible without moving...
691 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); }
692 inline wxOutCode GetOutCode( const wxPoint2DInt &pt ) const
693 { return (wxOutCode) (( ( pt.m_x < m_x ) ? wxOutLeft : 0 ) +
694 ( ( pt.m_x >= m_x + m_width ) ? wxOutRight : 0 ) +
695 ( ( pt.m_y < m_y ) ? wxOutTop : 0 ) +
696 ( ( pt.m_y >= m_y + m_height ) ? wxOutBottom : 0 )); }
697 inline wxOutCode GetOutcode( const wxPoint2DInt &pt ) const
698 { return GetOutCode( pt ) ; }
699 inline bool Contains( const wxPoint2DInt &pt ) const
700 { return GetOutCode( pt ) == wxInside; }
701 inline bool Contains( const wxRect2DInt &rect ) const
702 { return ( ( ( m_x <= rect.m_x ) && ( rect.m_x + rect.m_width <= m_x + m_width ) ) &&
703 ( ( m_y <= rect.m_y ) && ( rect.m_y + rect.m_height <= m_y + m_height ) ) ); }
704 inline bool IsEmpty() const
705 { return ( m_width <= 0 || m_height <= 0 ); }
706 inline bool HaveEqualSize( const wxRect2DInt &rect ) const
707 { return ( rect.m_width == m_width && rect.m_height == m_height ); }
708
709 inline void Inset( wxInt32 x , wxInt32 y ) { m_x += x; m_y += y; m_width -= 2 * x; m_height -= 2 * y; }
710 inline void Inset( wxInt32 left , wxInt32 top ,wxInt32 right , wxInt32 bottom )
711 { m_x += left; m_y += top; m_width -= left + right; m_height -= top + bottom;}
712 inline void Offset( const wxPoint2DInt &pt ) { m_x += pt.m_x; m_y += pt.m_y; }
713 void ConstrainTo( const wxRect2DInt &rect );
714 inline wxPoint2DInt Interpolate( wxInt32 widthfactor , wxInt32 heightfactor ) { return wxPoint2DInt( m_x + m_width * widthfactor , m_y + m_height * heightfactor ); }
715
716 static void Intersect( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest );
717 inline void Intersect( const wxRect2DInt &otherRect ) { Intersect( *this , otherRect , this ); }
718 inline wxRect2DInt CreateIntersection( const wxRect2DInt &otherRect ) const { wxRect2DInt result; Intersect( *this , otherRect , &result); return result; }
719 bool Intersects( const wxRect2DInt &rect ) const;
720
721 static void Union( const wxRect2DInt &src1 , const wxRect2DInt &src2 , wxRect2DInt *dest );
722 void Union( const wxRect2DInt &otherRect ) { Union( *this , otherRect , this ); }
723 void Union( const wxPoint2DInt &pt );
724 inline wxRect2DInt CreateUnion( const wxRect2DInt &otherRect ) const { wxRect2DInt result; Union( *this , otherRect , &result); return result; }
725
726 inline void Scale( wxInt32 f ) { m_x *= f; m_y *= f; m_width *= f; m_height *= f;}
727 inline void Scale( wxInt32 num , wxInt32 denum )
728 { m_x *= ((wxInt32)num)/((wxInt32)denum); m_y *= ((wxInt32)num)/((wxInt32)denum);
729 m_width *= ((wxInt32)num)/((wxInt32)denum); m_height *= ((wxInt32)num)/((wxInt32)denum);}
730
731 wxRect2DInt& operator = (const wxRect2DInt& rect);
732 bool operator == (const wxRect2DInt& rect) const;
733 bool operator != (const wxRect2DInt& rect) const;
734
735 #if wxUSE_STREAMS
736 void WriteTo( wxDataOutputStream &stream ) const;
737 void ReadFrom( wxDataInputStream &stream );
738 #endif // wxUSE_STREAMS
739
740 wxInt32 m_x;
741 wxInt32 m_y;
742 wxInt32 m_width;
743 wxInt32 m_height;
744 };
745
746 inline wxRect2DInt::wxRect2DInt( const wxRect2DInt &r )
747 {
748 m_x = r.m_x;
749 m_y = r.m_y;
750 m_width = r.m_width;
751 m_height = r.m_height;
752 }
753
754 inline wxRect2DInt::wxRect2DInt( const wxPoint2DInt &a , const wxPoint2DInt &b)
755 {
756 m_x = wxMin( a.m_x , b.m_x );
757 m_y = wxMin( a.m_y , b.m_y );
758 m_width = abs( a.m_x - b.m_x );
759 m_height = abs( a.m_y - b.m_y );
760 }
761
762 inline wxRect2DInt::wxRect2DInt( const wxPoint2DInt& pos, const wxSize& size)
763 {
764 m_x = pos.m_x;
765 m_y = pos.m_y;
766 m_width = size.x;
767 m_height = size.y;
768 }
769
770 inline bool wxRect2DInt::operator == (const wxRect2DInt& rect) const
771 {
772 return (m_x==rect.m_x && m_y==rect.m_y &&
773 m_width==rect.m_width && m_height==rect.m_height);
774 }
775
776 inline bool wxRect2DInt::operator != (const wxRect2DInt& rect) const
777 {
778 return !(*this == rect);
779 }
780
781 class WXDLLIMPEXP_CORE wxTransform2D
782 {
783 public :
784 virtual ~wxTransform2D() { }
785 virtual void Transform( wxPoint2DInt* pt )const = 0;
786 virtual void Transform( wxRect2DInt* r ) const;
787 virtual wxPoint2DInt Transform( const wxPoint2DInt &pt ) const;
788 virtual wxRect2DInt Transform( const wxRect2DInt &r ) const ;
789
790 virtual void InverseTransform( wxPoint2DInt* pt ) const = 0;
791 virtual void InverseTransform( wxRect2DInt* r ) const ;
792 virtual wxPoint2DInt InverseTransform( const wxPoint2DInt &pt ) const ;
793 virtual wxRect2DInt InverseTransform( const wxRect2DInt &r ) const ;
794 };
795
796
797 #endif // wxUSE_GEOMETRY
798
799 #endif // _WX_GEOMETRY_H_
wxWidgets (Impactor)