/usr/include/boost/polygon/polygon_traits.hpp is in libboost1.46-dev 1.46.1-7ubuntu3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1693 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 1763 1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 1785 1786 1787 1788 1789 1790 1791 1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 1831 1832 1833 1834 1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 | /*
Copyright 2008 Intel Corporation
Use, modification and distribution are subject to the Boost Software License,
Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
http://www.boost.org/LICENSE_1_0.txt).
*/
#ifndef BOOST_POLYGON_POLYGON_TRAITS_HPP
#define BOOST_POLYGON_POLYGON_TRAITS_HPP
namespace boost { namespace polygon{
template <typename T, typename enable = gtl_yes>
struct polygon_90_traits {
typedef typename T::coordinate_type coordinate_type;
typedef typename T::compact_iterator_type compact_iterator_type;
// Get the begin iterator
static inline compact_iterator_type begin_compact(const T& t) {
return t.begin_compact();
}
// Get the end iterator
static inline compact_iterator_type end_compact(const T& t) {
return t.end_compact();
}
// Get the number of sides of the polygon
static inline std::size_t size(const T& t) {
return t.size();
}
// Get the winding direction of the polygon
static inline winding_direction winding(const T&) {
return unknown_winding;
}
};
template <typename T>
struct polygon_traits_general {
typedef typename T::coordinate_type coordinate_type;
typedef typename T::iterator_type iterator_type;
typedef typename T::point_type point_type;
// Get the begin iterator
static inline iterator_type begin_points(const T& t) {
return t.begin();
}
// Get the end iterator
static inline iterator_type end_points(const T& t) {
return t.end();
}
// Get the number of sides of the polygon
static inline std::size_t size(const T& t) {
return t.size();
}
// Get the winding direction of the polygon
static inline winding_direction winding(const T&) {
return unknown_winding;
}
};
template <typename T>
struct polygon_traits_90 {
typedef typename polygon_90_traits<T>::coordinate_type coordinate_type;
typedef iterator_compact_to_points<typename polygon_90_traits<T>::compact_iterator_type, point_data<coordinate_type> > iterator_type;
typedef point_data<coordinate_type> point_type;
// Get the begin iterator
static inline iterator_type begin_points(const T& t) {
return iterator_type(polygon_90_traits<T>::begin_compact(t),
polygon_90_traits<T>::end_compact(t));
}
// Get the end iterator
static inline iterator_type end_points(const T& t) {
return iterator_type(polygon_90_traits<T>::end_compact(t),
polygon_90_traits<T>::end_compact(t));
}
// Get the number of sides of the polygon
static inline std::size_t size(const T& t) {
return polygon_90_traits<T>::size(t);
}
// Get the winding direction of the polygon
static inline winding_direction winding(const T& t) {
return polygon_90_traits<T>::winding(t);
}
};
#ifndef BOOST_VERY_LITTLE_SFINAE
template <typename T, typename enable = gtl_yes>
struct polygon_traits {};
template <typename T>
struct polygon_traits<T,
typename gtl_or_4<
typename gtl_same_type<typename geometry_concept<T>::type, polygon_concept>::type,
typename gtl_same_type<typename geometry_concept<T>::type, polygon_45_concept>::type,
typename gtl_same_type<typename geometry_concept<T>::type, polygon_with_holes_concept>::type,
typename gtl_same_type<typename geometry_concept<T>::type, polygon_45_with_holes_concept>::type
>::type> : public polygon_traits_general<T> {};
template <typename T>
struct polygon_traits< T,
typename gtl_or<
typename gtl_same_type<typename geometry_concept<T>::type, polygon_90_concept>::type,
typename gtl_same_type<typename geometry_concept<T>::type, polygon_90_with_holes_concept>::type
>::type > : public polygon_traits_90<T> {};
#else
template <typename T, typename T_IF, typename T_ELSE>
struct gtl_ifelse {};
template <typename T_IF, typename T_ELSE>
struct gtl_ifelse<gtl_no, T_IF, T_ELSE> {
typedef T_ELSE type;
};
template <typename T_IF, typename T_ELSE>
struct gtl_ifelse<gtl_yes, T_IF, T_ELSE> {
typedef T_IF type;
};
template <typename T, typename enable = gtl_yes>
struct polygon_traits {};
template <typename T>
struct polygon_traits<T, typename gtl_or<typename gtl_or_4<
typename gtl_same_type<typename geometry_concept<T>::type, polygon_concept>::type,
typename gtl_same_type<typename geometry_concept<T>::type, polygon_45_concept>::type,
typename gtl_same_type<typename geometry_concept<T>::type, polygon_with_holes_concept>::type,
typename gtl_same_type<typename geometry_concept<T>::type, polygon_45_with_holes_concept>::type
>::type, typename gtl_or<
typename gtl_same_type<typename geometry_concept<T>::type, polygon_90_concept>::type,
typename gtl_same_type<typename geometry_concept<T>::type, polygon_90_with_holes_concept>::type
>::type>::type > : public gtl_ifelse<typename gtl_or<
typename gtl_same_type<typename geometry_concept<T>::type, polygon_90_concept>::type,
typename gtl_same_type<typename geometry_concept<T>::type, polygon_90_with_holes_concept>::type >::type,
polygon_traits_90<T>,
polygon_traits_general<T> >::type {
};
#endif
template <typename T, typename enable = void>
struct polygon_with_holes_traits {
typedef typename T::iterator_holes_type iterator_holes_type;
typedef typename T::hole_type hole_type;
// Get the begin iterator
static inline iterator_holes_type begin_holes(const T& t) {
return t.begin_holes();
}
// Get the end iterator
static inline iterator_holes_type end_holes(const T& t) {
return t.end_holes();
}
// Get the number of holes
static inline std::size_t size_holes(const T& t) {
return t.size_holes();
}
};
template <typename T, typename enable = void>
struct polygon_90_mutable_traits {
// Set the data of a polygon with the unique coordinates in an iterator, starting with an x
template <typename iT>
static inline T& set_compact(T& t, iT input_begin, iT input_end) {
t.set_compact(input_begin, input_end);
return t;
}
};
template <typename T>
struct polygon_90_mutable_traits<T, typename gtl_same_type<polygon_concept, typename geometry_concept<T>::type>::type> {
// Set the data of a polygon with the unique coordinates in an iterator, starting with an x
template <typename iT>
static inline T& set_compact(T& t, iT input_begin, iT input_end) {
typedef iterator_points_to_compact<iT, typename polygon_traits<T>::point_type> iTp;
t.set_points(iTp(polygon_traits<T>::begin_points(t)), iTp(polygon_traits<T>::end_points(t)));
return t;
}
};
template <typename T, typename enable = void>
struct polygon_mutable_traits {
// Set the data of a polygon with the unique coordinates in an iterator, starting with an x
template <typename iT>
static inline T& set_points(T& t, iT input_begin, iT input_end) {
t.set(input_begin, input_end);
return t;
}
};
template <typename T, typename enable = void>
struct polygon_with_holes_mutable_traits {
// Set the data of a polygon with the unique coordinates in an iterator, starting with an x
template <typename iT>
static inline T& set_holes(T& t, iT inputBegin, iT inputEnd) {
t.set_holes(inputBegin, inputEnd);
return t;
}
};
}
}
#include "isotropy.hpp"
//point
#include "point_data.hpp"
#include "point_traits.hpp"
#include "point_concept.hpp"
//interval
#include "interval_data.hpp"
#include "interval_traits.hpp"
#include "interval_concept.hpp"
//rectangle
#include "rectangle_data.hpp"
#include "rectangle_traits.hpp"
#include "rectangle_concept.hpp"
//algorithms needed by polygon types
#include "detail/iterator_points_to_compact.hpp"
#include "detail/iterator_compact_to_points.hpp"
//polygons
#include "polygon_45_data.hpp"
#include "polygon_data.hpp"
#include "polygon_90_data.hpp"
#include "polygon_90_with_holes_data.hpp"
#include "polygon_45_with_holes_data.hpp"
#include "polygon_with_holes_data.hpp"
namespace boost { namespace polygon{
struct polygon_concept {};
struct polygon_with_holes_concept {};
struct polygon_45_concept {};
struct polygon_45_with_holes_concept {};
struct polygon_90_concept {};
struct polygon_90_with_holes_concept {};
template <typename T>
struct is_polygon_90_type {
typedef typename geometry_concept<T>::type GC;
typedef typename gtl_same_type<polygon_90_concept, GC>::type type;
};
template <typename T>
struct is_polygon_45_type {
typedef typename geometry_concept<T>::type GC;
typedef typename gtl_or<typename is_polygon_90_type<T>::type,
typename gtl_same_type<polygon_45_concept, GC>::type>::type type;
};
template <typename T>
struct is_polygon_type {
typedef typename geometry_concept<T>::type GC;
typedef typename gtl_or<typename is_polygon_45_type<T>::type,
typename gtl_same_type<polygon_concept, GC>::type>::type type;
};
template <typename T>
struct is_polygon_90_with_holes_type {
typedef typename geometry_concept<T>::type GC;
typedef typename gtl_or<typename is_polygon_90_type<T>::type,
typename gtl_same_type<polygon_90_with_holes_concept, GC>::type>::type type;
};
template <typename T>
struct is_polygon_45_with_holes_type {
typedef typename geometry_concept<T>::type GC;
typedef typename gtl_or_3<typename is_polygon_90_with_holes_type<T>::type,
typename is_polygon_45_type<T>::type,
typename gtl_same_type<polygon_45_with_holes_concept, GC>::type>::type type;
};
template <typename T>
struct is_polygon_with_holes_type {
typedef typename geometry_concept<T>::type GC;
typedef typename gtl_or_3<typename is_polygon_45_with_holes_type<T>::type,
typename is_polygon_type<T>::type,
typename gtl_same_type<polygon_with_holes_concept, GC>::type>::type type;
};
template <typename T>
struct is_mutable_polygon_90_type {
typedef typename geometry_concept<T>::type GC;
typedef typename gtl_same_type<polygon_90_concept, GC>::type type;
};
template <typename T>
struct is_mutable_polygon_45_type {
typedef typename geometry_concept<T>::type GC;
typedef typename gtl_same_type<polygon_45_concept, GC>::type type;
};
template <typename T>
struct is_mutable_polygon_type {
typedef typename geometry_concept<T>::type GC;
typedef typename gtl_same_type<polygon_concept, GC>::type type;
};
template <typename T>
struct is_mutable_polygon_90_with_holes_type {
typedef typename geometry_concept<T>::type GC;
typedef typename gtl_same_type<polygon_90_with_holes_concept, GC>::type type;
};
template <typename T>
struct is_mutable_polygon_45_with_holes_type {
typedef typename geometry_concept<T>::type GC;
typedef typename gtl_same_type<polygon_45_with_holes_concept, GC>::type type;
};
template <typename T>
struct is_mutable_polygon_with_holes_type {
typedef typename geometry_concept<T>::type GC;
typedef typename gtl_same_type<polygon_with_holes_concept, GC>::type type;
};
template <typename T>
struct is_any_mutable_polygon_with_holes_type {
typedef typename gtl_or_3<typename is_mutable_polygon_90_with_holes_type<T>::type,
typename is_mutable_polygon_45_with_holes_type<T>::type,
typename is_mutable_polygon_with_holes_type<T>::type>::type type;
};
template <typename T>
struct is_any_mutable_polygon_without_holes_type {
typedef typename gtl_or_3<
typename is_mutable_polygon_90_type<T>::type,
typename is_mutable_polygon_45_type<T>::type,
typename is_mutable_polygon_type<T>::type>::type type; };
template <typename T>
struct is_any_mutable_polygon_type {
typedef typename gtl_or<typename is_any_mutable_polygon_with_holes_type<T>::type,
typename is_any_mutable_polygon_without_holes_type<T>::type>::type type;
};
template <typename T>
struct polygon_from_polygon_with_holes_type {};
template <>
struct polygon_from_polygon_with_holes_type<polygon_with_holes_concept> { typedef polygon_concept type; };
template <>
struct polygon_from_polygon_with_holes_type<polygon_45_with_holes_concept> { typedef polygon_45_concept type; };
template <>
struct polygon_from_polygon_with_holes_type<polygon_90_with_holes_concept> { typedef polygon_90_concept type; };
template <>
struct geometry_domain<polygon_45_concept> { typedef forty_five_domain type; };
template <>
struct geometry_domain<polygon_45_with_holes_concept> { typedef forty_five_domain type; };
template <>
struct geometry_domain<polygon_90_concept> { typedef manhattan_domain type; };
template <>
struct geometry_domain<polygon_90_with_holes_concept> { typedef manhattan_domain type; };
template <typename domain_type, typename coordinate_type>
struct distance_type_by_domain { typedef typename coordinate_traits<coordinate_type>::coordinate_distance type; };
template <typename coordinate_type>
struct distance_type_by_domain<manhattan_domain, coordinate_type> {
typedef typename coordinate_traits<coordinate_type>::coordinate_difference type; };
// \brief Sets the boundary of the polygon to the points in the iterator range
// \tparam T A type that models polygon_concept
// \tparam iT Iterator type over objects that model point_concept
// \param t The polygon to set
// \param begin_points The start of the range of points
// \param end_points The end of the range of points
/// \relatesalso polygon_concept
template <typename T, typename iT>
typename enable_if <typename is_any_mutable_polygon_type<T>::type, T>::type &
set_points(T& t, iT begin_points, iT end_points) {
polygon_mutable_traits<T>::set_points(t, begin_points, end_points);
return t;
}
// \brief Sets the boundary of the polygon to the non-redundant coordinates in the iterator range
// \tparam T A type that models polygon_90_concept
// \tparam iT Iterator type over objects that model coordinate_concept
// \param t The polygon to set
// \param begin_compact_coordinates The start of the range of coordinates
// \param end_compact_coordinates The end of the range of coordinates
/// \relatesalso polygon_90_concept
template <typename T, typename iT>
typename enable_if <typename gtl_or<
typename is_mutable_polygon_90_type<T>::type,
typename is_mutable_polygon_90_with_holes_type<T>::type>::type, T>::type &
set_compact(T& t, iT begin_compact_coordinates, iT end_compact_coordinates) {
polygon_90_mutable_traits<T>::set_compact(t, begin_compact_coordinates, end_compact_coordinates);
return t;
}
/// \relatesalso polygon_with_holes_concept
template <typename T, typename iT>
typename enable_if< typename gtl_and <
typename is_any_mutable_polygon_with_holes_type<T>::type,
typename gtl_different_type<typename geometry_domain<typename geometry_concept<T>::type>::type,
manhattan_domain>::type>::type,
T>::type &
set_compact(T& t, iT begin_compact_coordinates, iT end_compact_coordinates) {
iterator_compact_to_points<iT, point_data<typename polygon_traits<T>::coordinate_type> >
itrb(begin_compact_coordinates, end_compact_coordinates),
itre(end_compact_coordinates, end_compact_coordinates);
return set_points(t, itrb, itre);
}
/// \relatesalso polygon_with_holes_concept
template <typename T, typename iT>
typename enable_if <typename is_any_mutable_polygon_with_holes_type<T>::type, T>::type &
set_holes(T& t, iT begin_holes, iT end_holes) {
polygon_with_holes_mutable_traits<T>::set_holes(t, begin_holes, end_holes);
return t;
}
/// \relatesalso polygon_90_concept
template <typename T>
typename polygon_90_traits<T>::compact_iterator_type
begin_compact(const T& polygon,
typename enable_if<
typename gtl_and <typename is_polygon_with_holes_type<T>::type,
typename gtl_same_type<typename geometry_domain<typename geometry_concept<T>::type>::type,
manhattan_domain>::type>::type>::type * = 0
) {
return polygon_90_traits<T>::begin_compact(polygon);
}
/// \relatesalso polygon_90_concept
template <typename T>
typename polygon_90_traits<T>::compact_iterator_type
end_compact(const T& polygon,
typename enable_if<
typename gtl_and <typename is_polygon_with_holes_type<T>::type,
typename gtl_same_type<typename geometry_domain<typename geometry_concept<T>::type>::type,
manhattan_domain>::type>::type>::type * = 0
) {
return polygon_90_traits<T>::end_compact(polygon);
}
/// \relatesalso polygon_concept
template <typename T>
typename enable_if < typename gtl_if<
typename is_polygon_with_holes_type<T>::type>::type,
typename polygon_traits<T>::iterator_type>::type
begin_points(const T& polygon) {
return polygon_traits<T>::begin_points(polygon);
}
/// \relatesalso polygon_concept
template <typename T>
typename enable_if < typename gtl_if<
typename is_polygon_with_holes_type<T>::type>::type,
typename polygon_traits<T>::iterator_type>::type
end_points(const T& polygon) {
return polygon_traits<T>::end_points(polygon);
}
/// \relatesalso polygon_concept
template <typename T>
typename enable_if <typename is_polygon_with_holes_type<T>::type,
std::size_t>::type
size(const T& polygon) {
return polygon_traits<T>::size(polygon);
}
/// \relatesalso polygon_with_holes_concept
template <typename T>
typename enable_if < typename gtl_if<
typename is_polygon_with_holes_type<T>::type>::type,
typename polygon_with_holes_traits<T>::iterator_holes_type>::type
begin_holes(const T& polygon) {
return polygon_with_holes_traits<T>::begin_holes(polygon);
}
/// \relatesalso polygon_with_holes_concept
template <typename T>
typename enable_if < typename gtl_if<
typename is_polygon_with_holes_type<T>::type>::type,
typename polygon_with_holes_traits<T>::iterator_holes_type>::type
end_holes(const T& polygon) {
return polygon_with_holes_traits<T>::end_holes(polygon);
}
/// \relatesalso polygon_with_holes_concept
template <typename T>
typename enable_if <typename is_polygon_with_holes_type<T>::type,
std::size_t>::type
size_holes(const T& polygon) {
return polygon_with_holes_traits<T>::size_holes(polygon);
}
// \relatesalso polygon_concept
template <typename T1, typename T2>
typename enable_if<
typename gtl_and< typename is_mutable_polygon_type<T1>::type,
typename is_polygon_type<T2>::type>::type, T1>::type &
assign(T1& lvalue, const T2& rvalue) {
polygon_mutable_traits<T1>::set_points(lvalue, polygon_traits<T2>::begin_points(rvalue),
polygon_traits<T2>::end_points(rvalue));
return lvalue;
}
// \relatesalso polygon_with_holes_concept
template <typename T1, typename T2>
typename enable_if<
typename gtl_and< typename is_mutable_polygon_with_holes_type<T1>::type,
typename is_polygon_with_holes_type<T2>::type>::type, T1>::type &
assign(T1& lvalue, const T2& rvalue) {
polygon_mutable_traits<T1>::set_points(lvalue, polygon_traits<T2>::begin_points(rvalue),
polygon_traits<T2>::end_points(rvalue));
polygon_with_holes_mutable_traits<T1>::set_holes(lvalue, polygon_with_holes_traits<T2>::begin_holes(rvalue),
polygon_with_holes_traits<T2>::end_holes(rvalue));
return lvalue;
}
// \relatesalso polygon_45_concept
template <typename T1, typename T2>
typename enable_if< typename gtl_and< typename is_mutable_polygon_45_type<T1>::type, typename is_polygon_45_type<T2>::type>::type, T1>::type &
assign(T1& lvalue, const T2& rvalue) {
polygon_mutable_traits<T1>::set_points(lvalue, polygon_traits<T2>::begin_points(rvalue),
polygon_traits<T2>::end_points(rvalue));
return lvalue;
}
// \relatesalso polygon_45_with_holes_concept
template <typename T1, typename T2>
typename enable_if<
typename gtl_and< typename is_mutable_polygon_45_with_holes_type<T1>::type,
typename is_polygon_45_with_holes_type<T2>::type>::type, T1>::type &
assign(T1& lvalue, const T2& rvalue) {
polygon_mutable_traits<T1>::set_points(lvalue, polygon_traits<T2>::begin_points(rvalue),
polygon_traits<T2>::end_points(rvalue));
polygon_with_holes_mutable_traits<T1>::set_holes(lvalue, polygon_with_holes_traits<T2>::begin_holes(rvalue),
polygon_with_holes_traits<T2>::end_holes(rvalue));
return lvalue;
}
// \relatesalso polygon_90_concept
template <typename T1, typename T2>
typename enable_if<
typename gtl_and< typename is_mutable_polygon_90_type<T1>::type,
typename is_polygon_90_type<T2>::type>::type, T1>::type &
assign(T1& lvalue, const T2& rvalue) {
polygon_90_mutable_traits<T1>::set_compact(lvalue, polygon_90_traits<T2>::begin_compact(rvalue),
polygon_90_traits<T2>::end_compact(rvalue));
return lvalue;
}
// \relatesalso polygon_90_with_holes_concept
template <typename T1, typename T2>
typename enable_if<
typename gtl_and< typename is_mutable_polygon_90_with_holes_type<T1>::type,
typename is_polygon_90_with_holes_type<T2>::type>::type, T1>::type &
assign(T1& lvalue, const T2& rvalue) {
polygon_90_mutable_traits<T1>::set_compact(lvalue, polygon_90_traits<T2>::begin_compact(rvalue),
polygon_90_traits<T2>::end_compact(rvalue));
polygon_with_holes_mutable_traits<T1>::set_holes(lvalue, polygon_with_holes_traits<T2>::begin_holes(rvalue),
polygon_with_holes_traits<T2>::end_holes(rvalue));
return lvalue;
}
// \relatesalso polygon_90_concept
template <typename T1, typename T2>
typename enable_if<
typename gtl_and< typename is_any_mutable_polygon_type<T1>::type,
typename is_rectangle_concept<typename geometry_concept<T2>::type>::type>::type, T1>::type &
assign(T1& polygon, const T2& rect) {
typedef point_data<typename polygon_traits<T1>::coordinate_type> PT;
PT points[4] = {PT(xl(rect), yl(rect)), PT(xh(rect), yl(rect)), PT(xh(rect), yh(rect)), PT(xl(rect), yh(rect))};
set_points(polygon, points, points+4);
return polygon;
}
/// \relatesalso polygon_90_concept
template <typename polygon_type, typename point_type>
typename enable_if< typename gtl_and< typename is_mutable_polygon_90_type<polygon_type>::type,
typename is_point_concept<typename geometry_concept<point_type>::type>::type>::type,
polygon_type>::type &
convolve(polygon_type& polygon, const point_type& point) {
std::vector<typename polygon_90_traits<polygon_type>::coordinate_type> coords;
coords.reserve(size(polygon));
bool pingpong = true;
for(typename polygon_90_traits<polygon_type>::compact_iterator_type iter = begin_compact(polygon);
iter != end_compact(polygon); ++iter) {
coords.push_back((*iter) + (pingpong ? x(point) : y(point)));
pingpong = !pingpong;
}
polygon_90_mutable_traits<polygon_type>::set_compact(polygon, coords.begin(), coords.end());
return polygon;
}
/// \relatesalso polygon_concept
template <typename polygon_type, typename point_type>
typename enable_if< typename gtl_and< typename gtl_or<
typename is_mutable_polygon_45_type<polygon_type>::type,
typename is_mutable_polygon_type<polygon_type>::type>::type,
typename is_point_concept<typename geometry_concept<point_type>::type>::type>::type,
polygon_type>::type &
convolve(polygon_type& polygon, const point_type& point) {
std::vector<typename std::iterator_traits<typename polygon_traits<polygon_type>::iterator_type>::value_type> points;
points.reserve(size(polygon));
for(typename polygon_traits<polygon_type>::iterator_type iter = begin_points(polygon);
iter != end_points(polygon); ++iter) {
points.push_back(*iter);
convolve(points.back(), point);
}
polygon_mutable_traits<polygon_type>::set_points(polygon, points.begin(), points.end());
return polygon;
}
/// \relatesalso polygon_with_holes_concept
template <typename polygon_type, typename point_type>
typename enable_if<
typename gtl_and< typename is_any_mutable_polygon_with_holes_type<polygon_type>::type,
typename is_point_concept<typename geometry_concept<point_type>::type>::type>::type,
polygon_type>::type &
convolve(polygon_type& polygon, const point_type& point) {
typedef typename polygon_with_holes_traits<polygon_type>::hole_type hole_type;
hole_type h;
set_points(h, begin_points(polygon), end_points(polygon));
convolve(h, point);
std::vector<hole_type> holes;
holes.reserve(size_holes(polygon));
for(typename polygon_with_holes_traits<polygon_type>::iterator_holes_type itr = begin_holes(polygon);
itr != end_holes(polygon); ++itr) {
holes.push_back(*itr);
convolve(holes.back(), point);
}
assign(polygon, h);
set_holes(polygon, holes.begin(), holes.end());
return polygon;
}
/// \relatesalso polygon_concept
template <typename T>
typename enable_if< typename is_any_mutable_polygon_type<T>::type, T>::type &
move(T& polygon, orientation_2d orient, typename polygon_traits<T>::coordinate_type displacement) {
typedef typename polygon_traits<T>::coordinate_type Unit;
if(orient == HORIZONTAL) return convolve(polygon, point_data<Unit>(displacement, Unit(0)));
return convolve(polygon, point_data<Unit>(Unit(0), displacement));
}
/// \relatesalso polygon_concept
/// \brief Applies a transformation to the polygon.
/// \tparam polygon_type A type that models polygon_concept
/// \tparam transform_type A type that may be either axis_transformation or transformation or that overloads point_concept::transform
/// \param polygon The polygon to transform
/// \param tr The transformation to apply
template <typename polygon_type, typename transform_type>
typename enable_if< typename is_any_mutable_polygon_without_holes_type<polygon_type>::type, polygon_type>::type &
transform(polygon_type& polygon, const transform_type& tr) {
std::vector<typename std::iterator_traits<typename polygon_traits<polygon_type>::iterator_type>::value_type> points;
points.reserve(size(polygon));
for(typename polygon_traits<polygon_type>::iterator_type iter = begin_points(polygon);
iter != end_points(polygon); ++iter) {
points.push_back(*iter);
transform(points.back(), tr);
}
polygon_mutable_traits<polygon_type>::set_points(polygon, points.begin(), points.end());
return polygon;
}
/// \relatesalso polygon_with_holes_concept
template <typename T, typename transform_type>
typename enable_if< typename is_any_mutable_polygon_with_holes_type<T>::type, T>::type &
transform(T& polygon, const transform_type& tr) {
typedef typename polygon_with_holes_traits<T>::hole_type hole_type;
hole_type h;
set_points(h, begin_points(polygon), end_points(polygon));
transform(h, tr);
std::vector<hole_type> holes;
holes.reserve(size_holes(polygon));
for(typename polygon_with_holes_traits<T>::iterator_holes_type itr = begin_holes(polygon);
itr != end_holes(polygon); ++itr) {
holes.push_back(*itr);
transform(holes.back(), tr);
}
assign(polygon, h);
set_holes(polygon, holes.begin(), holes.end());
return polygon;
}
template <typename polygon_type>
typename enable_if< typename is_any_mutable_polygon_without_holes_type<polygon_type>::type, polygon_type>::type &
scale_up(polygon_type& polygon, typename coordinate_traits<typename polygon_traits<polygon_type>::coordinate_type>::unsigned_area_type factor) {
std::vector<typename std::iterator_traits<typename polygon_traits<polygon_type>::iterator_type>::value_type> points;
points.reserve(size(polygon));
for(typename polygon_traits<polygon_type>::iterator_type iter = begin_points(polygon);
iter != end_points(polygon); ++iter) {
points.push_back(*iter);
scale_up(points.back(), factor);
}
polygon_mutable_traits<polygon_type>::set_points(polygon, points.begin(), points.end());
return polygon;
}
template <typename T>
typename enable_if< typename is_any_mutable_polygon_with_holes_type<T>::type, T>::type &
scale_up(T& polygon, typename coordinate_traits<typename polygon_traits<T>::coordinate_type>::unsigned_area_type factor) {
typedef typename polygon_with_holes_traits<T>::hole_type hole_type;
hole_type h;
set_points(h, begin_points(polygon), end_points(polygon));
scale_up(h, factor);
std::vector<hole_type> holes;
holes.reserve(size_holes(polygon));
for(typename polygon_with_holes_traits<T>::iterator_holes_type itr = begin_holes(polygon);
itr != end_holes(polygon); ++itr) {
holes.push_back(*itr);
scale_up(holes.back(), factor);
}
assign(polygon, h);
set_holes(polygon, holes.begin(), holes.end());
return polygon;
}
//scale non-45 down
template <typename polygon_type>
typename enable_if<
typename gtl_and< typename is_any_mutable_polygon_without_holes_type<polygon_type>::type,
typename gtl_not<typename gtl_same_type
< forty_five_domain,
typename geometry_domain<typename geometry_concept<polygon_type>::type>::type>::type>::type>::type,
polygon_type>::type &
scale_down(polygon_type& polygon, typename coordinate_traits<typename polygon_traits<polygon_type>::coordinate_type>::unsigned_area_type factor) {
std::vector<typename std::iterator_traits<typename polygon_traits<polygon_type>::iterator_type>::value_type> points;
points.reserve(size(polygon));
for(typename polygon_traits<polygon_type>::iterator_type iter = begin_points(polygon);
iter != end_points(polygon); ++iter) {
points.push_back(*iter);
scale_down(points.back(), factor);
}
polygon_mutable_traits<polygon_type>::set_points(polygon, points.begin(), points.end());
return polygon;
}
template <typename Unit>
Unit local_abs(Unit value) { return value < 0 ? (Unit)-value : value; }
template <typename Unit>
void snap_point_vector_to_45(std::vector<point_data<Unit> >& pts) {
typedef point_data<Unit> Point;
if(pts.size() < 3) { pts.clear(); return; }
Point firstPt = pts.front();
Point prevPt = firstPt;
std::unique(pts.begin(), pts.end());
if(pts.back() == pts[0]) pts.pop_back();
//iterate over point triplets
int numPts = pts.size();
bool wrap_around = false;
for(int i = 0; i < numPts; ++i) {
Point& pt1 = pts[i];
Point& pt2 = pts[(i + 1) % numPts];
Point& pt3 = pts[(i + 2) % numPts];
//check if non-45 edge
Unit deltax = x(pt2) - x(pt1);
Unit deltay = y(pt2) - y(pt1);
if(deltax && deltay &&
local_abs(deltax) != local_abs(deltay)) {
//adjust the middle point
Unit ndx = x(pt3) - x(pt2);
Unit ndy = y(pt3) - y(pt2);
if(ndx && ndy) {
Unit diff = local_abs(local_abs(deltax) - local_abs(deltay));
Unit halfdiff = diff/2;
if((deltax > 0 && deltay > 0) ||
(deltax < 0 && deltay < 0)) {
//previous edge is rising slope
if(local_abs(deltax + halfdiff + (diff % 2)) ==
local_abs(deltay - halfdiff)) {
x(pt2, x(pt2) + halfdiff + (diff % 2));
y(pt2, y(pt2) - halfdiff);
} else if(local_abs(deltax - halfdiff - (diff % 2)) ==
local_abs(deltay + halfdiff)) {
x(pt2, x(pt2) - halfdiff - (diff % 2));
y(pt2, y(pt2) + halfdiff);
} else{
//std::cout << "fail1\n";
}
} else {
//previous edge is falling slope
if(local_abs(deltax + halfdiff + (diff % 2)) ==
local_abs(deltay + halfdiff)) {
x(pt2, x(pt2) + halfdiff + (diff % 2));
y(pt2, y(pt2) + halfdiff);
} else if(local_abs(deltax - halfdiff - (diff % 2)) ==
local_abs(deltay - halfdiff)) {
x(pt2, x(pt2) - halfdiff - (diff % 2));
y(pt2, y(pt2) - halfdiff);
} else {
//std::cout << "fail2\n";
}
}
if(i == numPts - 1 && (diff % 2)) {
//we have a wrap around effect
if(!wrap_around) {
wrap_around = true;
i = -1;
}
}
} else if(ndx) {
//next edge is horizontal
//find the x value for pt1 that would make the abs(deltax) == abs(deltay)
Unit newDeltaX = local_abs(deltay);
if(deltax < 0) newDeltaX *= -1;
x(pt2, x(pt1) + newDeltaX);
} else { //ndy
//next edge is vertical
//find the y value for pt1 that would make the abs(deltax) == abs(deltay)
Unit newDeltaY = local_abs(deltax);
if(deltay < 0) newDeltaY *= -1;
y(pt2, y(pt1) + newDeltaY);
}
}
}
}
template <typename polygon_type>
typename enable_if< typename is_any_mutable_polygon_without_holes_type<polygon_type>::type, polygon_type>::type &
snap_to_45(polygon_type& polygon) {
std::vector<typename std::iterator_traits<typename polygon_traits<polygon_type>::iterator_type>::value_type> points;
points.reserve(size(polygon));
for(typename polygon_traits<polygon_type>::iterator_type iter = begin_points(polygon);
iter != end_points(polygon); ++iter) {
points.push_back(*iter);
}
snap_point_vector_to_45(points);
polygon_mutable_traits<polygon_type>::set_points(polygon, points.begin(), points.end());
return polygon;
}
template <typename polygon_type>
typename enable_if< typename is_any_mutable_polygon_with_holes_type<polygon_type>::type, polygon_type>::type &
snap_to_45(polygon_type& polygon) {
typedef typename polygon_with_holes_traits<polygon_type>::hole_type hole_type;
hole_type h;
set_points(h, begin_points(polygon), end_points(polygon));
snap_to_45(h);
std::vector<hole_type> holes;
holes.reserve(size_holes(polygon));
for(typename polygon_with_holes_traits<polygon_type>::iterator_holes_type itr = begin_holes(polygon);
itr != end_holes(polygon); ++itr) {
holes.push_back(*itr);
snap_to_45(holes.back());
}
assign(polygon, h);
set_holes(polygon, holes.begin(), holes.end());
return polygon;
}
//scale specifically 45 down
template <typename polygon_type>
typename enable_if<
typename gtl_and< typename is_any_mutable_polygon_without_holes_type<polygon_type>::type,
typename gtl_same_type
< forty_five_domain,
typename geometry_domain<typename geometry_concept<polygon_type>::type>::type>::type>::type,
polygon_type>::type &
scale_down(polygon_type& polygon, typename coordinate_traits<typename polygon_traits<polygon_type>::coordinate_type>::unsigned_area_type factor) {
std::vector<typename std::iterator_traits<typename polygon_traits<polygon_type>::iterator_type>::value_type> points;
points.reserve(size(polygon));
for(typename polygon_traits<polygon_type>::iterator_type iter = begin_points(polygon);
iter != end_points(polygon); ++iter) {
points.push_back(*iter);
scale_down(points.back(), factor);
}
snap_point_vector_to_45(points);
polygon_mutable_traits<polygon_type>::set_points(polygon, points.begin(), points.end());
return polygon;
}
template <typename T>
typename enable_if< typename is_any_mutable_polygon_with_holes_type<T>::type, T>::type &
scale_down(T& polygon, typename coordinate_traits<typename polygon_traits<T>::coordinate_type>::unsigned_area_type factor) {
typedef typename polygon_with_holes_traits<T>::hole_type hole_type;
hole_type h;
set_points(h, begin_points(polygon), end_points(polygon));
scale_down(h, factor);
std::vector<hole_type> holes;
holes.reserve(size_holes(polygon));
for(typename polygon_with_holes_traits<T>::iterator_holes_type itr = begin_holes(polygon);
itr != end_holes(polygon); ++itr) {
holes.push_back(*itr);
scale_down(holes.back(), factor);
}
assign(polygon, h);
set_holes(polygon, holes.begin(), holes.end());
return polygon;
}
//scale non-45
template <typename polygon_type>
typename enable_if<
typename gtl_and< typename is_any_mutable_polygon_without_holes_type<polygon_type>::type,
typename gtl_not<typename gtl_same_type
< forty_five_domain,
typename geometry_domain<typename geometry_concept<polygon_type>::type>::type>::type>::type>::type,
polygon_type>::type &
scale(polygon_type& polygon, double factor) {
std::vector<typename std::iterator_traits<typename polygon_traits<polygon_type>::iterator_type>::value_type> points;
points.reserve(size(polygon));
for(typename polygon_traits<polygon_type>::iterator_type iter = begin_points(polygon);
iter != end_points(polygon); ++iter) {
points.push_back(*iter);
scale(points.back(), anisotropic_scale_factor<double>(factor, factor));
}
polygon_mutable_traits<polygon_type>::set_points(polygon, points.begin(), points.end());
return polygon;
}
//scale specifically 45
template <typename polygon_type>
polygon_type&
scale(polygon_type& polygon, double factor,
typename enable_if<
typename gtl_and< typename is_any_mutable_polygon_without_holes_type<polygon_type>::type,
typename gtl_same_type
< forty_five_domain,
typename geometry_domain<typename geometry_concept<polygon_type>::type>::type>::type>::type>::type * = 0
) {
std::vector<typename std::iterator_traits<typename polygon_traits<polygon_type>::iterator_type>::value_type> points;
points.reserve(size(polygon));
for(typename polygon_traits<polygon_type>::iterator_type iter = begin_points(polygon);
iter != end_points(polygon); ++iter) {
points.push_back(*iter);
scale(points.back(), anisotropic_scale_factor<double>(factor, factor));
}
snap_point_vector_to_45(points);
polygon_mutable_traits<polygon_type>::set_points(polygon, points.begin(), points.end());
return polygon;
}
template <typename T>
T&
scale(T& polygon, double factor,
typename enable_if< typename is_any_mutable_polygon_with_holes_type<T>::type>::type * = 0
) {
typedef typename polygon_with_holes_traits<T>::hole_type hole_type;
hole_type h;
set_points(h, begin_points(polygon), end_points(polygon));
scale(h, factor);
std::vector<hole_type> holes;
holes.reserve(size_holes(polygon));
for(typename polygon_with_holes_traits<T>::iterator_holes_type itr = begin_holes(polygon);
itr != end_holes(polygon); ++itr) {
holes.push_back(*itr);
scale(holes.back(), factor);
}
assign(polygon, h);
set_holes(polygon, holes.begin(), holes.end());
return polygon;
}
template <typename iterator_type, typename area_type>
static area_type
point_sequence_area(iterator_type begin_range, iterator_type end_range) {
typedef typename std::iterator_traits<iterator_type>::value_type point_type;
typedef typename point_traits<point_type>::coordinate_type Unit;
if(begin_range == end_range) return area_type(0);
point_type first = *begin_range;
point_type previous = first;
++begin_range;
// Initialize trapezoid base line
area_type y_base = (area_type)y(first);
// Initialize area accumulator
area_type area(0);
while (begin_range != end_range) {
area_type x1 = (area_type)x(previous);
area_type x2 = (area_type)x(*begin_range);
#ifdef BOOST_POLYGON_ICC
#pragma warning (disable:1572)
#endif
if(x1 != x2) {
#ifdef BOOST_POLYGON_ICC
#pragma warning (default:1572)
#endif
// do trapezoid area accumulation
area += (x2 - x1) * (((area_type)y(*begin_range) - y_base) +
((area_type)y(previous) - y_base)) / 2;
}
previous = *begin_range;
// go to next point
++begin_range;
}
//wrap around to evaluate the edge between first and last if not closed
if(!equivalence(first, previous)) {
area_type x1 = (area_type)x(previous);
area_type x2 = (area_type)x(first);
area += (x2 - x1) * (((area_type)y(first) - y_base) +
((area_type)y(previous) - y_base)) / 2;
}
return area;
}
template <typename T>
typename enable_if<
typename is_polygon_with_holes_type<T>::type,
typename area_type_by_domain< typename geometry_domain<typename geometry_concept<T>::type>::type,
typename polygon_traits<T>::coordinate_type>::type>::type
area(const T& polygon) {
typedef typename area_type_by_domain< typename geometry_domain<typename geometry_concept<T>::type>::type,
typename polygon_traits<T>::coordinate_type>::type area_type;
area_type retval = point_sequence_area<typename polygon_traits<T>::iterator_type, area_type>
(begin_points(polygon), end_points(polygon));
if(retval < 0) retval *= -1;
for(typename polygon_with_holes_traits<T>::iterator_holes_type itr =
polygon_with_holes_traits<T>::begin_holes(polygon);
itr != polygon_with_holes_traits<T>::end_holes(polygon); ++itr) {
area_type tmp_area = point_sequence_area
<typename polygon_traits<typename polygon_with_holes_traits<T>::hole_type>::iterator_type, area_type>
(begin_points(*itr), end_points(*itr));
if(tmp_area < 0) tmp_area *= -1;
retval -= tmp_area;
}
return retval;
}
template <typename iT>
bool point_sequence_is_45(iT itr, iT itr_end) {
typedef typename iT::value_type Point;
typedef typename point_traits<Point>::coordinate_type Unit;
if(itr == itr_end) return true;
Point firstPt = *itr;
Point prevPt = firstPt;
++itr;
while(itr != itr_end) {
Point pt = *itr;
Unit deltax = x(pt) - x(prevPt);
Unit deltay = y(pt) - y(prevPt);
if(deltax && deltay &&
local_abs(deltax) != local_abs(deltay))
return false;
prevPt = pt;
++itr;
}
Unit deltax = x(firstPt) - x(prevPt);
Unit deltay = y(firstPt) - y(prevPt);
if(deltax && deltay &&
local_abs(deltax) != local_abs(deltay))
return false;
return true;
}
template <typename polygon_type>
typename enable_if< typename is_polygon_with_holes_type<polygon_type>::type, bool>::type
is_45(const polygon_type& polygon) {
typename polygon_traits<polygon_type>::iterator_type itr = begin_points(polygon), itr_end = end_points(polygon);
if(!point_sequence_is_45(itr, itr_end)) return false;
typename polygon_with_holes_traits<polygon_type>::iterator_holes_type itrh = begin_holes(polygon), itrh_end = end_holes(polygon);
typedef typename polygon_with_holes_traits<polygon_type>::hole_type hole_type;
for(; itrh != itrh_end; ++ itrh) {
typename polygon_traits<hole_type>::iterator_type itr1 = begin_points(polygon), itr1_end = end_points(polygon);
if(!point_sequence_is_45(itr1, itr1_end)) return false;
}
return true;
}
template <typename distance_type, typename iterator_type>
distance_type point_sequence_distance(iterator_type itr, iterator_type itr_end) {
typedef distance_type Unit;
typedef iterator_type iterator;
typedef typename std::iterator_traits<iterator>::value_type point_type;
Unit return_value = Unit(0);
point_type previous_point, first_point;
if(itr == itr_end) return return_value;
previous_point = first_point = *itr;
++itr;
for( ; itr != itr_end; ++itr) {
point_type current_point = *itr;
return_value += (Unit)euclidean_distance(current_point, previous_point);
previous_point = current_point;
}
return_value += (Unit)euclidean_distance(previous_point, first_point);
return return_value;
}
template <typename T>
typename distance_type_by_domain
<typename geometry_domain<typename geometry_concept<T>::type>::type, typename polygon_traits<T>::coordinate_type>::type
perimeter(const T& polygon,
typename enable_if<
typename is_polygon_with_holes_type<T>::type>::type * = 0
) {
typedef typename distance_type_by_domain
<typename geometry_domain<typename geometry_concept<T>::type>::type, typename polygon_traits<T>::coordinate_type>::type Unit;
typedef typename polygon_traits<T>::iterator_type iterator;
iterator itr = begin_points(polygon);
iterator itr_end = end_points(polygon);
Unit return_value = point_sequence_distance<Unit, iterator>(itr, itr_end);
for(typename polygon_with_holes_traits<T>::iterator_holes_type itr_holes = begin_holes(polygon);
itr_holes != end_holes(polygon); ++itr_holes) {
typedef typename polygon_traits<typename polygon_with_holes_traits<T>::hole_type>::iterator_type hitertype;
return_value += point_sequence_distance<Unit, hitertype>(begin_points(*itr_holes), end_points(*itr_holes));
}
return return_value;
}
template <typename T>
typename enable_if <typename is_polygon_with_holes_type<T>::type,
direction_1d>::type
winding(const T& polygon) {
winding_direction wd = polygon_traits<T>::winding(polygon);
if(wd != unknown_winding) {
return wd == clockwise_winding ? CLOCKWISE: COUNTERCLOCKWISE;
}
typedef typename area_type_by_domain< typename geometry_domain<typename geometry_concept<T>::type>::type,
typename polygon_traits<T>::coordinate_type>::type area_type;
return point_sequence_area<typename polygon_traits<T>::iterator_type, area_type>(begin_points(polygon), end_points(polygon)) < 0 ?
COUNTERCLOCKWISE : CLOCKWISE;
}
template <typename T, typename input_point_type>
typename enable_if<
typename gtl_and< typename is_polygon_90_type<T>::type,
typename gtl_same_type<typename geometry_concept<input_point_type>::type, point_concept>::type>::type,
bool>::type
contains(const T& polygon, const input_point_type& point, bool consider_touch = true) {
typedef T polygon_type;
typedef typename polygon_traits<polygon_type>::coordinate_type coordinate_type;
typedef typename polygon_traits<polygon_type>::iterator_type iterator;
typedef typename std::iterator_traits<iterator>::value_type point_type;
iterator iter, iter_end;
iter_end = end_points(polygon);
iter = begin_points(polygon);
point_type prev_pt = *iter;
std::size_t num = size(polygon);
std::size_t counts[2] = {0, 0};
for(std::size_t i = 0; i < num; ++i) {
if(i == num-1) iter = begin_points(polygon);
else ++iter;
point_type current_pt = *iter;
if(x(current_pt) ==
x(prev_pt)) {
unsigned int index = x(current_pt) >
x(point);
std::size_t increment = 0;
interval_data<coordinate_type> ivl(y(current_pt),
y(prev_pt));
if(contains(ivl, y(point), true)) {
if(x(current_pt) ==
x(point)) return consider_touch;
++increment;
if(y(current_pt) !=
y(point) &&
y(prev_pt) !=
y(point)) {
++increment;
}
counts[index] += increment;
}
}
prev_pt = current_pt;
}
//odd count implies boundary condition
if(counts[0] % 2 || counts[1] % 2) return consider_touch;
//an odd number of edges to the left implies interior pt
return counts[winding(polygon) == COUNTERCLOCKWISE ? 0 : 1] % 4 != 0;
}
//TODO: refactor to expose as user APIs
template <typename Unit>
struct edge_utils {
typedef point_data<Unit> Point;
typedef std::pair<Point, Point> half_edge;
class less_point : public std::binary_function<Point, Point, bool> {
public:
inline less_point() {}
inline bool operator () (const Point& pt1, const Point& pt2) const {
if(pt1.get(HORIZONTAL) < pt2.get(HORIZONTAL)) return true;
if(pt1.get(HORIZONTAL) == pt2.get(HORIZONTAL)) {
if(pt1.get(VERTICAL) < pt2.get(VERTICAL)) return true;
}
return false;
}
};
static inline bool between(Point pt, Point pt1, Point pt2) {
less_point lp;
if(lp(pt1, pt2))
return lp(pt, pt2) && lp(pt1, pt);
return lp(pt, pt1) && lp(pt2, pt);
}
template <typename area_type>
static inline bool equal_slope(area_type dx1, area_type dy1, area_type dx2, area_type dy2) {
typedef typename coordinate_traits<Unit>::unsigned_area_type unsigned_product_type;
unsigned_product_type cross_1 = (unsigned_product_type)(dx2 < 0 ? -dx2 :dx2) * (unsigned_product_type)(dy1 < 0 ? -dy1 : dy1);
unsigned_product_type cross_2 = (unsigned_product_type)(dx1 < 0 ? -dx1 :dx1) * (unsigned_product_type)(dy2 < 0 ? -dy2 : dy2);
int dx1_sign = dx1 < 0 ? -1 : 1;
int dx2_sign = dx2 < 0 ? -1 : 1;
int dy1_sign = dy1 < 0 ? -1 : 1;
int dy2_sign = dy2 < 0 ? -1 : 1;
int cross_1_sign = dx2_sign * dy1_sign;
int cross_2_sign = dx1_sign * dy2_sign;
return cross_1 == cross_2 && (cross_1_sign == cross_2_sign || cross_1 == 0);
}
static inline bool equal_slope(const Unit& x, const Unit& y,
const Point& pt1, const Point& pt2) {
const Point* pts[2] = {&pt1, &pt2};
typedef typename coordinate_traits<Unit>::manhattan_area_type at;
at dy2 = (at)pts[1]->get(VERTICAL) - (at)y;
at dy1 = (at)pts[0]->get(VERTICAL) - (at)y;
at dx2 = (at)pts[1]->get(HORIZONTAL) - (at)x;
at dx1 = (at)pts[0]->get(HORIZONTAL) - (at)x;
return equal_slope(dx1, dy1, dx2, dy2);
}
template <typename area_type>
static inline bool less_slope(area_type dx1, area_type dy1, area_type dx2, area_type dy2) {
//reflext x and y slopes to right hand side half plane
if(dx1 < 0) {
dy1 *= -1;
dx1 *= -1;
} else if(dx1 == 0) {
//if the first slope is vertical the first cannot be less
return false;
}
if(dx2 < 0) {
dy2 *= -1;
dx2 *= -1;
} else if(dx2 == 0) {
//if the second slope is vertical the first is always less unless it is also vertical, in which case they are equal
return dx1 != 0;
}
typedef typename coordinate_traits<Unit>::unsigned_area_type unsigned_product_type;
unsigned_product_type cross_1 = (unsigned_product_type)(dx2 < 0 ? -dx2 :dx2) * (unsigned_product_type)(dy1 < 0 ? -dy1 : dy1);
unsigned_product_type cross_2 = (unsigned_product_type)(dx1 < 0 ? -dx1 :dx1) * (unsigned_product_type)(dy2 < 0 ? -dy2 : dy2);
int dx1_sign = dx1 < 0 ? -1 : 1;
int dx2_sign = dx2 < 0 ? -1 : 1;
int dy1_sign = dy1 < 0 ? -1 : 1;
int dy2_sign = dy2 < 0 ? -1 : 1;
int cross_1_sign = dx2_sign * dy1_sign;
int cross_2_sign = dx1_sign * dy2_sign;
if(cross_1_sign < cross_2_sign) return true;
if(cross_2_sign < cross_1_sign) return false;
if(cross_1_sign == -1) return cross_2 < cross_1;
return cross_1 < cross_2;
}
static inline bool less_slope(const Unit& x, const Unit& y,
const Point& pt1, const Point& pt2) {
const Point* pts[2] = {&pt1, &pt2};
//compute y value on edge from pt_ to pts[1] at the x value of pts[0]
typedef typename coordinate_traits<Unit>::manhattan_area_type at;
at dy2 = (at)pts[1]->get(VERTICAL) - (at)y;
at dy1 = (at)pts[0]->get(VERTICAL) - (at)y;
at dx2 = (at)pts[1]->get(HORIZONTAL) - (at)x;
at dx1 = (at)pts[0]->get(HORIZONTAL) - (at)x;
return less_slope(dx1, dy1, dx2, dy2);
}
//return -1 below, 0 on and 1 above line
//assumes point is on x interval of segment
static inline int on_above_or_below(Point pt, const half_edge& he) {
if(pt == he.first || pt == he.second) return 0;
if(equal_slope(pt.get(HORIZONTAL), pt.get(VERTICAL), he.first, he.second)) return 0;
bool less_result = less_slope(pt.get(HORIZONTAL), pt.get(VERTICAL), he.first, he.second);
int retval = less_result ? -1 : 1;
less_point lp;
if(lp(he.second, he.first)) retval *= -1;
if(!between(pt, he.first, he.second)) retval *= -1;
return retval;
}
};
template <typename T, typename input_point_type>
typename enable_if<
typename gtl_and< typename is_any_mutable_polygon_with_holes_type<T>::type,
typename gtl_same_type<typename geometry_concept<input_point_type>::type, point_concept>::type>::type,
bool>::type
contains(const T& polygon, const input_point_type& point, bool consider_touch = true) {
typedef typename polygon_with_holes_traits<T>::iterator_holes_type holes_iterator;
bool isInside = contains( view_as< typename polygon_from_polygon_with_holes_type<
typename geometry_concept<T>::type>::type>( polygon ), point, consider_touch );
if(!isInside) return false; //no need to check holes
holes_iterator itH = begin_holes( polygon );
while( itH != end_holes( polygon ) ) {
if( contains( *itH, point, !consider_touch ) ) {
isInside = false;
break;
}
++itH;
}
return isInside;
}
template <typename T, typename input_point_type>
typename enable_if<
typename gtl_and_3<
typename is_polygon_type<T>::type,
typename gtl_different_type<typename geometry_domain<typename geometry_concept<T>::type>::type, manhattan_domain>::type,
typename gtl_same_type<typename geometry_concept<input_point_type>::type, point_concept>::type>::type,
bool>::type
contains(const T& polygon, const input_point_type& point, bool consider_touch = true) {
typedef typename point_traits<input_point_type>::coordinate_type Unit;
typedef point_data<Unit> Point;
typedef std::pair<Point, Point> half_edge;
typedef typename polygon_traits<T>::iterator_type iterator;
iterator itr = begin_points(polygon);
iterator itrEnd = end_points(polygon);
half_edge he;
if(itr == itrEnd) return false;
assign(he.first, *itr);
Point firstPt;
assign(firstPt, *itr);
++itr;
if(itr == itrEnd) return false;
bool done = false;
int above = 0;
while(!done) {
Point currentPt;
if(itr == itrEnd) {
done = true;
currentPt = firstPt;
} else {
assign(currentPt, *itr);
++itr;
}
if(currentPt == he.first) {
continue;
} else {
he.second = currentPt;
if(equivalence(point, currentPt)) return consider_touch;
Unit xmin = (std::min)(x(he.first), x(he.second));
Unit xmax = (std::max)(x(he.first), x(he.second));
if(x(point) >= xmin && x(point) < xmax) { //double counts if <= xmax
Point tmppt;
assign(tmppt, point);
int oabedge = edge_utils<Unit>::on_above_or_below(tmppt, he);
if(oabedge == 0) return consider_touch;
if(oabedge == 1) ++above;
} else if(x(point) == xmax) {
Point tmppt;
assign(tmppt, point);
if( edge_utils<Unit>::on_above_or_below(tmppt, he) == 0 ) {
return consider_touch;
}
}
}
he.first = he.second;
}
return above % 2 != 0; //if the point is above an odd number of edges is must be inside polygon
}
/*
template <typename T, typename input_point_type>
typename enable_if<
typename gtl_and_3<
typename is_polygon_with_holes_type<T>::type,
typename gtl_different_type<typename geometry_domain<typename geometry_concept<T>::type>::type, manhattan_domain>::type,
typename gtl_same_type<typename geometry_concept<input_point_type>::type, point_concept>::type>::type,
bool>::type
contains(const T& polygon, const input_point_type& point, bool consider_touch = true) {
typedef typename point_traits<input_point_type>::coordinate_type Unit;
typedef point_data<Unit> Point;
typedef std::pair<Point, Point> half_edge;
typedef typename polygon_traits<T>::iterator_type iterator;
iterator itr = begin_points(polygon);
iterator itrEnd = end_points(polygon);
half_edge he;
if(itr == itrEnd) return false;
assign(he.first, *itr);
Point firstPt;
assign(firstPt, *itr);
++itr;
if(itr == itrEnd) return false;
bool done = false;
int above = 0;
while(!done) {
Point currentPt;
if(itr == itrEnd) {
done = true;
currentPt = firstPt;
} else {
assign(currentPt, *itr);
++itr;
}
if(currentPt == he.first) {
continue;
} else {
he.second = currentPt;
if(equivalence(point, currentPt)) return consider_touch;
Unit xmin = (std::min)(x(he.first), x(he.second));
Unit xmax = (std::max)(x(he.first), x(he.second));
if(x(point) >= xmin && x(point) < xmax) { //double counts if <= xmax
Point tmppt;
assign(tmppt, point);
int oabedge = edge_utils<Unit>::on_above_or_below(tmppt, he);
if(oabedge == 0) return consider_touch;
if(oabedge == 1) ++above;
}
}
he.first = he.second;
}
return above % 2 != 0; //if the point is above an odd number of edges is must be inside polygon
}
*/
template <typename T1, typename T2>
typename enable_if<
typename gtl_and< typename is_mutable_point_concept<typename geometry_concept<T1>::type>::type,
typename is_polygon_with_holes_type<T2>::type>::type,
bool>::type
center(T1& center_point, const T2& polygon) {
typedef typename polygon_traits<T2>::coordinate_type coordinate_type;
rectangle_data<coordinate_type> bbox;
extents(bbox, polygon);
return center(center_point, bbox);
}
template <typename T1, typename T2>
typename enable_if<
typename gtl_and< typename is_mutable_rectangle_concept<typename geometry_concept<T1>::type>::type,
typename is_polygon_with_holes_type<T2>::type>::type,
bool>::type
extents(T1& bounding_box, const T2& polygon) {
typedef typename polygon_traits<T2>::iterator_type iterator;
bool first_iteration = true;
iterator itr_end = end_points(polygon);
for(iterator itr = begin_points(polygon); itr != itr_end; ++itr) {
if(first_iteration) {
set_points(bounding_box, *itr, *itr);
first_iteration = false;
} else {
encompass(bounding_box, *itr);
}
}
if(first_iteration) return false;
return true;
}
template <class T>
template <class T2>
polygon_90_data<T>& polygon_90_data<T>::operator=(const T2& rvalue) {
assign(*this, rvalue);
return *this;
}
template <class T>
template <class T2>
polygon_45_data<T>& polygon_45_data<T>::operator=(const T2& rvalue) {
assign(*this, rvalue);
return *this;
}
template <class T>
template <class T2>
polygon_data<T>& polygon_data<T>::operator=(const T2& rvalue) {
assign(*this, rvalue);
return *this;
}
template <class T>
template <class T2>
polygon_90_with_holes_data<T>& polygon_90_with_holes_data<T>::operator=(const T2& rvalue) {
assign(*this, rvalue);
return *this;
}
template <class T>
template <class T2>
polygon_45_with_holes_data<T>& polygon_45_with_holes_data<T>::operator=(const T2& rvalue) {
assign(*this, rvalue);
return *this;
}
template <class T>
template <class T2>
polygon_with_holes_data<T>& polygon_with_holes_data<T>::operator=(const T2& rvalue) {
assign(*this, rvalue);
return *this;
}
template <typename T>
struct geometry_concept<polygon_data<T> > {
typedef polygon_concept type;
};
template <typename T>
struct geometry_concept<polygon_45_data<T> > {
typedef polygon_45_concept type;
};
template <typename T>
struct geometry_concept<polygon_90_data<T> > {
typedef polygon_90_concept type;
};
template <typename T>
struct geometry_concept<polygon_with_holes_data<T> > {
typedef polygon_with_holes_concept type;
};
template <typename T>
struct geometry_concept<polygon_45_with_holes_data<T> > {
typedef polygon_45_with_holes_concept type;
};
template <typename T>
struct geometry_concept<polygon_90_with_holes_data<T> > {
typedef polygon_90_with_holes_concept type;
};
// template <typename T> struct polygon_with_holes_traits<polygon_90_data<T> > {
// typedef polygon_90_data<T> hole_type;
// typedef const hole_type* iterator_holes_type;
// static inline iterator_holes_type begin_holes(const hole_type& t) { return &t; }
// static inline iterator_holes_type end_holes(const hole_type& t) { return &t; }
// static inline std::size_t size_holes(const hole_type& t) { return 0; }
// };
// template <typename T> struct polygon_with_holes_traits<polygon_45_data<T> > {
// typedef polygon_45_data<T> hole_type;
// typedef const hole_type* iterator_holes_type;
// static inline iterator_holes_type begin_holes(const hole_type& t) { return &t; }
// static inline iterator_holes_type end_holes(const hole_type& t) { return &t; }
// static inline std::size_t size_holes(const hole_type& t) { return 0; }
// };
// template <typename T> struct polygon_with_holes_traits<polygon_data<T> > {
// typedef polygon_data<T> hole_type;
// typedef const hole_type* iterator_holes_type;
// static inline iterator_holes_type begin_holes(const hole_type& t) { return &t; }
// static inline iterator_holes_type end_holes(const hole_type& t) { return &t; }
// static inline std::size_t size_holes(const hole_type& t) { return 0; }
// };
template <typename T> struct get_void {};
template <> struct get_void<gtl_yes> { typedef void type; };
template <typename T> struct polygon_with_holes_traits<
T, typename get_void<typename is_any_mutable_polygon_without_holes_type<T>::type>::type > {
typedef T hole_type;
typedef const hole_type* iterator_holes_type;
static inline iterator_holes_type begin_holes(const hole_type& t) { return &t; }
static inline iterator_holes_type end_holes(const hole_type& t) { return &t; }
static inline std::size_t size_holes(const hole_type& t) { return 0; }
};
template <typename T>
struct view_of<rectangle_concept, T> {
typedef typename polygon_traits<T>::coordinate_type coordinate_type;
typedef interval_data<coordinate_type> interval_type;
rectangle_data<coordinate_type> rect;
view_of(const T& obj) : rect() {
point_data<coordinate_type> pts[2];
typename polygon_traits<T>::iterator_type itr =
begin_points(obj), itre = end_points(obj);
if(itr == itre) return;
assign(pts[0], *itr);
++itr;
if(itr == itre) return;
++itr;
if(itr == itre) return;
assign(pts[1], *itr);
set_points(rect, pts[0], pts[1]);
}
inline interval_type get(orientation_2d orient) const {
return rect.get(orient); }
};
template <typename T>
struct geometry_concept<view_of<rectangle_concept, T> > {
typedef rectangle_concept type;
};
template <typename T>
struct view_of<polygon_45_concept, T> {
const T* t;
view_of(const T& obj) : t(&obj) {}
typedef typename polygon_traits<T>::coordinate_type coordinate_type;
typedef typename polygon_traits<T>::iterator_type iterator_type;
typedef typename polygon_traits<T>::point_type point_type;
/// Get the begin iterator
inline iterator_type begin() const {
return polygon_traits<T>::begin_points(*t);
}
/// Get the end iterator
inline iterator_type end() const {
return polygon_traits<T>::end_points(*t);
}
/// Get the number of sides of the polygon
inline std::size_t size() const {
return polygon_traits<T>::size(*t);
}
/// Get the winding direction of the polygon
inline winding_direction winding() const {
return polygon_traits<T>::winding(*t);
}
};
template <typename T>
struct geometry_concept<view_of<polygon_45_concept, T> > {
typedef polygon_45_concept type;
};
template <typename T>
struct view_of<polygon_90_concept, T> {
const T* t;
view_of(const T& obj) : t(&obj) {}
typedef typename polygon_traits<T>::coordinate_type coordinate_type;
typedef typename polygon_traits<T>::iterator_type iterator_type;
typedef typename polygon_traits<T>::point_type point_type;
typedef iterator_points_to_compact<iterator_type, point_type> compact_iterator_type;
/// Get the begin iterator
inline compact_iterator_type begin_compact() const {
return compact_iterator_type(polygon_traits<T>::begin_points(*t),
polygon_traits<T>::end_points(*t));
}
/// Get the end iterator
inline compact_iterator_type end_compact() const {
return compact_iterator_type(polygon_traits<T>::end_points(*t),
polygon_traits<T>::end_points(*t));
}
/// Get the number of sides of the polygon
inline std::size_t size() const {
return polygon_traits<T>::size(*t);
}
/// Get the winding direction of the polygon
inline winding_direction winding() const {
return polygon_traits<T>::winding(*t);
}
};
template <typename T>
struct geometry_concept<view_of<polygon_90_concept, T> > {
typedef polygon_90_concept type;
};
template <typename T>
struct view_of<polygon_45_with_holes_concept, T> {
const T* t;
view_of(const T& obj) : t(&obj) {}
typedef typename polygon_traits<T>::coordinate_type coordinate_type;
typedef typename polygon_traits<T>::iterator_type iterator_type;
typedef typename polygon_traits<T>::point_type point_type;
typedef view_of<polygon_45_concept, typename polygon_with_holes_traits<T>::hole_type> hole_type;
struct iterator_holes_type {
typedef std::forward_iterator_tag iterator_category;
typedef hole_type value_type;
typedef std::ptrdiff_t difference_type;
typedef const hole_type* pointer; //immutable
typedef const hole_type& reference; //immutable
typedef typename polygon_with_holes_traits<T>::iterator_holes_type iht;
iht internal_itr;
iterator_holes_type() : internal_itr() {}
iterator_holes_type(iht iht_in) : internal_itr(iht_in) {}
inline iterator_holes_type& operator++() {
++internal_itr;
return *this;
}
inline const iterator_holes_type operator++(int) {
iterator_holes_type tmp(*this);
++(*this);
return tmp;
}
inline bool operator==(const iterator_holes_type& that) const {
return (internal_itr == that.internal_itr);
}
inline bool operator!=(const iterator_holes_type& that) const {
return (internal_itr != that.internal_itr);
}
inline value_type operator*() const {
return view_as<polygon_45_concept>(*internal_itr);
}
};
/// Get the begin iterator
inline iterator_type begin() const {
return polygon_traits<T>::begin_points(*t);
}
/// Get the end iterator
inline iterator_type end() const {
return polygon_traits<T>::end_points(*t);
}
/// Get the number of sides of the polygon
inline std::size_t size() const {
return polygon_traits<T>::size(*t);
}
/// Get the winding direction of the polygon
inline winding_direction winding() const {
return polygon_traits<T>::winding(*t);
}
/// Get the begin iterator
inline iterator_holes_type begin_holes() const {
return polygon_with_holes_traits<T>::begin_holes(*t);
}
/// Get the end iterator
inline iterator_holes_type end_holes() const {
return polygon_with_holes_traits<T>::end_holes(*t);
}
/// Get the number of sides of the polygon
inline std::size_t size_holes() const {
return polygon_with_holes_traits<T>::size_holes(*t);
}
};
template <typename T>
struct geometry_concept<view_of<polygon_45_with_holes_concept, T> > {
typedef polygon_45_with_holes_concept type;
};
template <typename T>
struct view_of<polygon_90_with_holes_concept, T> {
const T* t;
view_of(const T& obj) : t(&obj) {}
typedef typename polygon_traits<T>::coordinate_type coordinate_type;
typedef typename polygon_traits<T>::iterator_type iterator_type;
typedef typename polygon_traits<T>::point_type point_type;
typedef iterator_points_to_compact<iterator_type, point_type> compact_iterator_type;
typedef view_of<polygon_90_concept, typename polygon_with_holes_traits<T>::hole_type> hole_type;
struct iterator_holes_type {
typedef std::forward_iterator_tag iterator_category;
typedef hole_type value_type;
typedef std::ptrdiff_t difference_type;
typedef const hole_type* pointer; //immutable
typedef const hole_type& reference; //immutable
typedef typename polygon_with_holes_traits<T>::iterator_holes_type iht;
iht internal_itr;
iterator_holes_type() : internal_itr() {}
iterator_holes_type(iht iht_in) : internal_itr(iht_in) {}
inline iterator_holes_type& operator++() {
++internal_itr;
return *this;
}
inline const iterator_holes_type operator++(int) {
iterator_holes_type tmp(*this);
++(*this);
return tmp;
}
inline bool operator==(const iterator_holes_type& that) const {
return (internal_itr == that.internal_itr);
}
inline bool operator!=(const iterator_holes_type& that) const {
return (internal_itr != that.internal_itr);
}
inline value_type operator*() const {
return view_as<polygon_90_concept>(*internal_itr);
}
};
/// Get the begin iterator
inline compact_iterator_type begin_compact() const {
return compact_iterator_type(polygon_traits<T>::begin_points(*t),
polygon_traits<T>::end_points(*t));
}
/// Get the end iterator
inline compact_iterator_type end_compact() const {
return compact_iterator_type(polygon_traits<T>::end_points(*t),
polygon_traits<T>::end_points(*t));
}
/// Get the number of sides of the polygon
inline std::size_t size() const {
return polygon_traits<T>::size(*t);
}
/// Get the winding direction of the polygon
inline winding_direction winding() const {
return polygon_traits<T>::winding(*t);
}
/// Get the begin iterator
inline iterator_holes_type begin_holes() const {
return polygon_with_holes_traits<T>::begin_holes(*t);
}
/// Get the end iterator
inline iterator_holes_type end_holes() const {
return polygon_with_holes_traits<T>::end_holes(*t);
}
/// Get the number of sides of the polygon
inline std::size_t size_holes() const {
return polygon_with_holes_traits<T>::size_holes(*t);
}
};
template <typename T>
struct geometry_concept<view_of<polygon_90_with_holes_concept, T> > {
typedef polygon_90_with_holes_concept type;
};
template <typename T>
struct view_of<polygon_concept, T> {
const T* t;
view_of(const T& obj) : t(&obj) {}
typedef typename polygon_traits<T>::coordinate_type coordinate_type;
typedef typename polygon_traits<T>::iterator_type iterator_type;
typedef typename polygon_traits<T>::point_type point_type;
/// Get the begin iterator
inline iterator_type begin() const {
return polygon_traits<T>::begin_points(*t);
}
/// Get the end iterator
inline iterator_type end() const {
return polygon_traits<T>::end_points(*t);
}
/// Get the number of sides of the polygon
inline std::size_t size() const {
return polygon_traits<T>::size(*t);
}
/// Get the winding direction of the polygon
inline winding_direction winding() const {
return polygon_traits<T>::winding(*t);
}
};
template <typename T>
struct geometry_concept<view_of<polygon_concept, T> > {
typedef polygon_concept type;
};
}
}
#endif
|