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1 | // Boost.Polygon library point_concept.hpp header file |
2 | ||
3 | // Copyright (c) Intel Corporation 2008. | |
4 | // Copyright (c) 2008-2012 Simonson Lucanus. | |
5 | // Copyright (c) 2012-2012 Andrii Sydorchuk. | |
6 | ||
7 | // See http://www.boost.org for updates, documentation, and revision history. | |
8 | // Use, modification and distribution is subject to the Boost Software License, | |
9 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
10 | // http://www.boost.org/LICENSE_1_0.txt) | |
11 | ||
12 | #ifndef BOOST_POLYGON_POINT_CONCEPT_HPP | |
13 | #define BOOST_POLYGON_POINT_CONCEPT_HPP | |
14 | ||
15 | #include "isotropy.hpp" | |
16 | #include "point_traits.hpp" | |
17 | ||
18 | namespace boost { | |
19 | namespace polygon { | |
20 | ||
21 | struct point_concept {}; | |
22 | ||
23 | template <typename ConceptType> | |
24 | struct is_point_concept { | |
25 | typedef gtl_no type; | |
26 | }; | |
27 | ||
28 | template <> | |
29 | struct is_point_concept<point_concept> { | |
30 | typedef gtl_yes type; | |
31 | }; | |
32 | ||
33 | template <typename ConceptType> | |
34 | struct is_mutable_point_concept { | |
35 | typedef gtl_no type; | |
36 | }; | |
37 | ||
38 | template <> | |
39 | struct is_mutable_point_concept<point_concept> { | |
40 | typedef gtl_yes type; | |
41 | }; | |
42 | ||
43 | template <typename GeometryType, typename BoolType> | |
44 | struct point_coordinate_type_by_concept { | |
45 | typedef void type; | |
46 | }; | |
47 | ||
48 | template <typename GeometryType> | |
49 | struct point_coordinate_type_by_concept<GeometryType, gtl_yes> { | |
50 | typedef typename point_traits<GeometryType>::coordinate_type type; | |
51 | }; | |
52 | ||
53 | template <typename GeometryType> | |
54 | struct point_coordinate_type { | |
55 | typedef typename point_coordinate_type_by_concept< | |
56 | GeometryType, | |
57 | typename is_point_concept< | |
58 | typename geometry_concept<GeometryType>::type | |
59 | >::type | |
60 | >::type type; | |
61 | }; | |
62 | ||
63 | template <typename GeometryType, typename BoolType> | |
64 | struct point_difference_type_by_concept { | |
65 | typedef void type; | |
66 | }; | |
67 | ||
68 | template <typename GeometryType> | |
69 | struct point_difference_type_by_concept<GeometryType, gtl_yes> { | |
70 | typedef typename coordinate_traits< | |
71 | typename point_traits<GeometryType>::coordinate_type | |
72 | >::coordinate_difference type; | |
73 | }; | |
74 | ||
75 | template <typename GeometryType> | |
76 | struct point_difference_type { | |
77 | typedef typename point_difference_type_by_concept< | |
78 | GeometryType, | |
79 | typename is_point_concept< | |
80 | typename geometry_concept<GeometryType>::type | |
81 | >::type | |
82 | >::type type; | |
83 | }; | |
84 | ||
85 | template <typename GeometryType, typename BoolType> | |
86 | struct point_distance_type_by_concept { | |
87 | typedef void type; | |
88 | }; | |
89 | ||
90 | template <typename GeometryType> | |
91 | struct point_distance_type_by_concept<GeometryType, gtl_yes> { | |
92 | typedef typename coordinate_traits< | |
93 | typename point_coordinate_type<GeometryType>::type | |
94 | >::coordinate_distance type; | |
95 | }; | |
96 | ||
97 | template <typename GeometryType> | |
98 | struct point_distance_type { | |
99 | typedef typename point_distance_type_by_concept< | |
100 | GeometryType, | |
101 | typename is_point_concept< | |
102 | typename geometry_concept<GeometryType>::type | |
103 | >::type | |
104 | >::type type; | |
105 | }; | |
106 | ||
107 | struct y_pt_get : gtl_yes {}; | |
108 | ||
109 | template <typename PointType> | |
110 | typename enable_if< | |
111 | typename gtl_and< | |
112 | y_pt_get, | |
113 | typename is_point_concept< | |
114 | typename geometry_concept<PointType>::type | |
115 | >::type | |
116 | >::type, | |
117 | typename point_coordinate_type<PointType>::type | |
118 | >::type get(const PointType& point, orientation_2d orient) { | |
119 | return point_traits<PointType>::get(point, orient); | |
120 | } | |
121 | ||
122 | struct y_pt_set : gtl_yes {}; | |
123 | ||
124 | template <typename PointType> | |
125 | typename enable_if< | |
126 | typename gtl_and< | |
127 | y_pt_set, | |
128 | typename is_mutable_point_concept< | |
129 | typename geometry_concept<PointType>::type | |
130 | >::type | |
131 | >::type, | |
132 | void | |
133 | >::type set(PointType& point, orientation_2d orient, | |
134 | typename point_mutable_traits<PointType>::coordinate_type value) { | |
135 | point_mutable_traits<PointType>::set(point, orient, value); | |
136 | } | |
137 | ||
138 | struct y_pt_construct : gtl_yes {}; | |
139 | ||
140 | template <typename PointType> | |
141 | typename enable_if< | |
142 | typename gtl_and< | |
143 | y_pt_construct, | |
144 | typename is_mutable_point_concept< | |
145 | typename geometry_concept<PointType>::type | |
146 | >::type | |
147 | >::type, | |
148 | PointType>::type construct( | |
149 | typename point_mutable_traits<PointType>::coordinate_type x, | |
150 | typename point_mutable_traits<PointType>::coordinate_type y) { | |
151 | return point_mutable_traits<PointType>::construct(x, y); | |
152 | } | |
153 | ||
154 | struct y_pt_assign : gtl_yes {}; | |
155 | ||
156 | template <typename PointType1, typename PointType2> | |
157 | typename enable_if< | |
158 | typename gtl_and_3< | |
159 | y_pt_assign, | |
160 | typename is_mutable_point_concept< | |
161 | typename geometry_concept<PointType1>::type | |
162 | >::type, | |
163 | typename is_point_concept< | |
164 | typename geometry_concept<PointType2>::type | |
165 | >::type | |
166 | >::type, | |
167 | PointType1>::type& assign(PointType1& lvalue, const PointType2& rvalue) { | |
168 | set(lvalue, HORIZONTAL, get(rvalue, HORIZONTAL)); | |
169 | set(lvalue, VERTICAL, get(rvalue, VERTICAL)); | |
170 | return lvalue; | |
171 | } | |
172 | ||
173 | struct y_p_x : gtl_yes {}; | |
174 | ||
175 | template <typename PointType> | |
176 | typename enable_if< | |
177 | typename gtl_and< | |
178 | y_p_x, | |
179 | typename is_point_concept< | |
180 | typename geometry_concept<PointType>::type | |
181 | >::type | |
182 | >::type, | |
183 | typename point_coordinate_type<PointType>::type | |
184 | >::type x(const PointType& point) { | |
185 | return get(point, HORIZONTAL); | |
186 | } | |
187 | ||
188 | struct y_p_y : gtl_yes {}; | |
189 | ||
190 | template <typename PointType> | |
191 | typename enable_if< | |
192 | typename gtl_and< | |
193 | y_p_y, | |
194 | typename is_point_concept< | |
195 | typename geometry_concept<PointType>::type | |
196 | >::type | |
197 | >::type, | |
198 | typename point_coordinate_type<PointType>::type | |
199 | >::type y(const PointType& point) { | |
200 | return get(point, VERTICAL); | |
201 | } | |
202 | ||
203 | struct y_p_sx : gtl_yes {}; | |
204 | ||
205 | template <typename PointType> | |
206 | typename enable_if< | |
207 | typename gtl_and< | |
208 | y_p_sx, | |
209 | typename is_mutable_point_concept< | |
210 | typename geometry_concept<PointType>::type | |
211 | >::type | |
212 | >::type, | |
213 | void>::type x(PointType& point, | |
214 | typename point_mutable_traits<PointType>::coordinate_type value) { | |
215 | set(point, HORIZONTAL, value); | |
216 | } | |
217 | ||
218 | struct y_p_sy : gtl_yes {}; | |
219 | ||
220 | template <typename PointType> | |
221 | typename enable_if< | |
222 | typename gtl_and< | |
223 | y_p_sy, | |
224 | typename is_mutable_point_concept< | |
225 | typename geometry_concept<PointType>::type | |
226 | >::type | |
227 | >::type, | |
228 | void>::type y(PointType& point, | |
229 | typename point_mutable_traits<PointType>::coordinate_type value) { | |
230 | set(point, VERTICAL, value); | |
231 | } | |
232 | ||
233 | struct y_pt_equiv : gtl_yes {}; | |
234 | ||
235 | template <typename PointType1, typename PointType2> | |
236 | typename enable_if< | |
237 | typename gtl_and_3< | |
238 | y_pt_equiv, | |
239 | typename is_point_concept< | |
240 | typename geometry_concept<PointType1>::type | |
241 | >::type, | |
242 | typename is_point_concept< | |
243 | typename geometry_concept<PointType2>::type | |
244 | >::type | |
245 | >::type, | |
246 | bool>::type equivalence( | |
247 | const PointType1& point1, const PointType2& point2) { | |
248 | return (x(point1) == x(point2)) && (y(point1) == y(point2)); | |
249 | } | |
250 | ||
251 | struct y_pt_man_dist : gtl_yes {}; | |
252 | ||
253 | template <typename PointType1, typename PointType2> | |
254 | typename enable_if< | |
255 | typename gtl_and_3< | |
256 | y_pt_man_dist, | |
257 | typename is_point_concept< | |
258 | typename geometry_concept<PointType1>::type | |
259 | >::type, | |
260 | typename is_point_concept< | |
261 | typename geometry_concept<PointType2>::type | |
262 | >::type | |
263 | >::type, | |
264 | typename point_difference_type<PointType1>::type>::type | |
265 | manhattan_distance(const PointType1& point1, const PointType2& point2) { | |
266 | return euclidean_distance(point1, point2, HORIZONTAL) + | |
267 | euclidean_distance(point1, point2, VERTICAL); | |
268 | } | |
269 | ||
270 | struct y_pt_ed1 : gtl_yes {}; | |
271 | ||
272 | template <typename PointType1, typename PointType2> | |
273 | typename enable_if< | |
274 | typename gtl_and_3< | |
275 | y_pt_ed1, | |
276 | typename is_point_concept< | |
277 | typename geometry_concept<PointType1>::type | |
278 | >::type, | |
279 | typename is_point_concept< | |
280 | typename geometry_concept<PointType2>::type | |
281 | >::type | |
282 | >::type, | |
283 | typename point_difference_type<PointType1>::type>::type | |
284 | euclidean_distance( | |
285 | const PointType1& point1, | |
286 | const PointType2& point2, | |
287 | orientation_2d orient) { | |
288 | typename point_difference_type<PointType1>::type dif = | |
289 | get(point1, orient) - get(point2, orient); | |
290 | return (dif < 0) ? -dif : dif; | |
291 | } | |
292 | ||
293 | struct y_pt_eds : gtl_yes {}; | |
294 | ||
295 | template <typename PointType1, typename PointType2> | |
296 | typename enable_if< | |
297 | typename gtl_and_3< | |
298 | y_pt_eds, | |
299 | typename is_point_concept< | |
300 | typename geometry_concept<PointType1>::type | |
301 | >::type, | |
302 | typename is_point_concept< | |
303 | typename geometry_concept<PointType2>::type | |
304 | >::type | |
305 | >::type, | |
306 | typename point_difference_type<PointType1>::type>::type | |
307 | distance_squared(const PointType1& point1, const PointType2& point2) { | |
308 | typename point_difference_type<PointType1>::type dx = | |
309 | euclidean_distance(point1, point2, HORIZONTAL); | |
310 | typename point_difference_type<PointType1>::type dy = | |
311 | euclidean_distance(point1, point2, VERTICAL); | |
312 | dx *= dx; | |
313 | dy *= dy; | |
314 | return dx + dy; | |
315 | } | |
316 | ||
317 | struct y_pt_ed2 : gtl_yes {}; | |
318 | ||
319 | template <typename PointType1, typename PointType2> | |
320 | typename enable_if< | |
321 | typename gtl_and_3< | |
322 | y_pt_ed2, | |
323 | typename is_point_concept< | |
324 | typename geometry_concept<PointType1>::type | |
325 | >::type, | |
326 | typename is_point_concept< | |
327 | typename geometry_concept<PointType2>::type | |
328 | >::type | |
329 | >::type, | |
330 | typename point_distance_type<PointType1>::type>::type | |
331 | euclidean_distance(const PointType1& point1, const PointType2& point2) { | |
332 | return (std::sqrt)( | |
333 | static_cast<double>(distance_squared(point1, point2))); | |
334 | } | |
335 | ||
336 | struct y_pt_convolve : gtl_yes {}; | |
337 | ||
338 | template <typename PointType1, typename PointType2> | |
339 | typename enable_if< | |
340 | typename gtl_and_3< | |
341 | y_pt_convolve, | |
342 | typename is_mutable_point_concept< | |
343 | typename geometry_concept<PointType1>::type | |
344 | >::type, | |
345 | typename is_point_concept< | |
346 | typename geometry_concept<PointType2>::type | |
347 | >::type | |
348 | >::type, | |
349 | PointType1>::type& convolve(PointType1& lvalue, const PointType2& rvalue) { | |
350 | x(lvalue, x(lvalue) + x(rvalue)); | |
351 | y(lvalue, y(lvalue) + y(rvalue)); | |
352 | return lvalue; | |
353 | } | |
354 | ||
355 | struct y_pt_deconvolve : gtl_yes {}; | |
356 | ||
357 | template <typename PointType1, typename PointType2> | |
358 | typename enable_if< | |
359 | typename gtl_and_3< | |
360 | y_pt_deconvolve, | |
361 | typename is_mutable_point_concept< | |
362 | typename geometry_concept<PointType1>::type | |
363 | >::type, | |
364 | typename is_point_concept< | |
365 | typename geometry_concept<PointType2>::type | |
366 | >::type | |
367 | >::type, | |
368 | PointType1>::type& deconvolve(PointType1& lvalue, const PointType2& rvalue) { | |
369 | x(lvalue, x(lvalue) - x(rvalue)); | |
370 | y(lvalue, y(lvalue) - y(rvalue)); | |
371 | return lvalue; | |
372 | } | |
373 | ||
374 | struct y_pt_scale_up : gtl_yes {}; | |
375 | ||
376 | template <typename PointType, typename CType> | |
377 | typename enable_if< | |
378 | typename gtl_and< | |
379 | y_pt_scale_up, | |
380 | typename is_mutable_point_concept< | |
381 | typename geometry_concept<PointType>::type | |
382 | >::type | |
383 | >::type, | |
384 | PointType>::type& scale_up(PointType& point, CType factor) { | |
385 | typedef typename point_coordinate_type<PointType>::type Unit; | |
386 | x(point, x(point) * (Unit)factor); | |
387 | y(point, y(point) * (Unit)factor); | |
388 | return point; | |
389 | } | |
390 | ||
391 | struct y_pt_scale_down : gtl_yes {}; | |
392 | ||
393 | template <typename PointType, typename CType> | |
394 | typename enable_if< | |
395 | typename gtl_and< | |
396 | y_pt_scale_down, | |
397 | typename is_mutable_point_concept< | |
398 | typename geometry_concept<PointType>::type | |
399 | >::type | |
400 | >::type, | |
401 | PointType>::type& scale_down(PointType& point, CType factor) { | |
402 | typedef typename point_coordinate_type<PointType>::type Unit; | |
403 | typedef typename coordinate_traits<Unit>::coordinate_distance dt; | |
404 | x(point, scaling_policy<Unit>::round((dt)(x(point)) / (dt)factor)); | |
405 | y(point, scaling_policy<Unit>::round((dt)(y(point)) / (dt)factor)); | |
406 | return point; | |
407 | } | |
408 | ||
409 | struct y_pt_scale : gtl_yes {}; | |
410 | ||
411 | template <typename PointType, typename ScaleType> | |
412 | typename enable_if< | |
413 | typename gtl_and< | |
414 | y_pt_scale, | |
415 | typename is_mutable_point_concept< | |
416 | typename geometry_concept<PointType>::type | |
417 | >::type | |
418 | >::type, | |
419 | PointType>::type& scale(PointType& point, const ScaleType& scaling) { | |
420 | typedef typename point_coordinate_type<PointType>::type Unit; | |
421 | Unit x_coord(x(point)); | |
422 | Unit y_coord(y(point)); | |
423 | scaling.scale(x_coord, y_coord); | |
424 | x(point, x_coord); | |
425 | y(point, y_coord); | |
426 | return point; | |
427 | } | |
428 | ||
429 | struct y_pt_transform : gtl_yes {}; | |
430 | ||
431 | template <typename PointType, typename TransformType> | |
432 | typename enable_if< | |
433 | typename gtl_and< | |
434 | y_pt_transform, | |
435 | typename is_mutable_point_concept< | |
436 | typename geometry_concept<PointType>::type | |
437 | >::type | |
438 | >::type, | |
439 | PointType>::type& transform(PointType& point, const TransformType& transform) { | |
440 | typedef typename point_coordinate_type<PointType>::type Unit; | |
441 | Unit x_coord(x(point)); | |
442 | Unit y_coord(y(point)); | |
443 | transform.transform(x_coord, y_coord); | |
444 | x(point, x_coord); | |
445 | y(point, y_coord); | |
446 | return point; | |
447 | } | |
448 | ||
449 | struct y_pt_move : gtl_yes {}; | |
450 | ||
451 | template <typename PointType> | |
452 | typename enable_if< | |
453 | typename gtl_and< | |
454 | y_pt_move, | |
455 | typename is_mutable_point_concept< | |
456 | typename geometry_concept<PointType>::type | |
457 | >::type | |
458 | >::type, | |
459 | PointType>::type& move(PointType& point, orientation_2d orient, | |
460 | typename point_coordinate_type<PointType>::type displacement) { | |
461 | typedef typename point_coordinate_type<PointType>::type Unit; | |
462 | Unit coord = get(point, orient); | |
463 | set(point, orient, coord + displacement); | |
464 | return point; | |
465 | } | |
466 | } // polygon | |
467 | } // boost | |
468 | ||
469 | #endif // BOOST_POLYGON_POINT_CONCEPT_HPP |