File size: 2,659 Bytes
5b89cb9 | 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 | #ifdef IGL_STATIC_LIBRARY
#undef IGL_STATIC_LIBRARY
#endif
#include <test_common.h>
#include <igl/delaunay_triangulation.h>
namespace git_issue {
constexpr static double EPSILON_LENGTH = 0.0005; // Sketchup support 1/1000 precision
constexpr static double EPSILON_ANGLE = 0.0000000000005;
constexpr static double INV_EPSILON_LENGTH = 2000.0;
template<typename T>
inline int orient2d(const T &pa, const T &pb, const T &pc) {
double acx, bcx, acy, bcy;
acx = pa[0] - pc[0];
bcx = pb[0] - pc[0];
acy = pa[1] - pc[1];
bcy = pb[1] - pc[1];
double val = acx * bcy - acy * bcx;
if (val < -EPSILON_LENGTH) {
return -1;
} else if (val > EPSILON_LENGTH) {
return 1;
} else {
return 0;
}
return 0;
}
template <typename T>
inline int incircle(const T &pa, const T &pb, const T &pc, const T &pd) {
double adx, ady, bdx, bdy, cdx, cdy;
double abdet, bcdet, cadet;
double alift, blift, clift;
adx = pa[0] - pd[0];
ady = pa[1] - pd[1];
bdx = pb[0] - pd[0];
bdy = pb[1] - pd[1];
cdx = pc[0] - pd[0];
cdy = pc[1] - pd[1];
abdet = adx * bdy - bdx * ady;
bcdet = bdx * cdy - cdx * bdy;
cadet = cdx * ady - adx * cdy;
alift = adx * adx + ady * ady;
blift = bdx * bdx + bdy * bdy;
clift = cdx * cdx + cdy * cdy;
double val = alift * bcdet + blift * cadet + clift * abdet;
if (val < -EPSILON_LENGTH) {
return -1;
} else if (val > EPSILON_LENGTH) {
return 1;
} else {
return 0;
}
return 0;
}
}
TEST_CASE("delaunay_triangulation_issue_521", "[igl]") {
using namespace Eigen;
using namespace git_issue;
MatrixXd V(16, 2);
MatrixXi F;
V << 4.55E-13, 2.33E-12,
248.718, 249.939,
463.602, 36.1059,
764.953, 338.937,
-1002.42, 2097.68,
-1303.78, 1794.85,
-1120.79, 1612.75,
-1369.5, 1362.81,
-1552.49, 1544.91,
-1843.04, 1252.94,
-75.6625, -505.806,
214.883, -213.834,
-191.721, 190.784,
-1166.14, 1160.44,
-917.424, 1410.38,
56.9975, 440.723;
const auto &orient2d_predicates = [](const double * pa, const double * pb, const double * pc) {
return orient2d(pa, pb, pc);
};
const auto &incircle_predicates = [](const double * pa, const double * pb, const double * pc, const double * pd) {
return incircle(pa, pb, pc, pd);
};
igl::delaunay_triangulation(V, orient2d_predicates, incircle_predicates, F);
REQUIRE(F.rows() > 0);
REQUIRE(F.cols() == 3);
REQUIRE(F.maxCoeff() < 16);
REQUIRE(F.minCoeff() == 0);
}
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