File size: 3,407 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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 | #include <test_common.h>
#include <igl/avg_edge_length.h>
#include <igl/barycenter.h>
#include <igl/comb_cross_field.h>
#include <igl/comb_frame_field.h>
#include <igl/compute_frame_field_bisectors.h>
#include <igl/cross_field_mismatch.h>
#include <igl/cut_mesh_from_singularities.h>
#include <igl/find_cross_field_singularities.h>
#include <igl/local_basis.h>
#include <igl/readOFF.h>
#include <igl/rotate_vectors.h>
#include <igl/copyleft/comiso/miq.h>
#include <igl/copyleft/comiso/nrosy.h>
#include <igl/PI.h>
#include <igl/serialize.h>
#include <sstream>
#include <igl/writeDMAT.h>
TEST_CASE("miq: 3_holes", "[igl/copyleft/comiso]")
{
using namespace Eigen;
// Input mesh
Eigen::MatrixXd V;
Eigen::MatrixXi F;
// Face barycenters
Eigen::MatrixXd B;
// Cross field
Eigen::MatrixXd X1,X2;
// Bisector field
Eigen::MatrixXd BIS1, BIS2;
// Combed bisector
Eigen::MatrixXd BIS1_combed, BIS2_combed;
// Per-corner, integer mismatches
Eigen::Matrix<int, Eigen::Dynamic, 3> MMatch;
// Field singularities
Eigen::Matrix<int, Eigen::Dynamic, 1> isSingularity, singularityIndex;
// Per corner seams
Eigen::Matrix<int, Eigen::Dynamic, 3> Seams;
// Combed field
Eigen::MatrixXd X1_combed, X2_combed;
// Global parametrization
Eigen::MatrixXd UV;
Eigen::MatrixXi FUV;
// Global parametrization (reference)
Eigen::MatrixXd UV_ref;
Eigen::MatrixXi FUV_ref;
// Load a mesh in OFF format
igl::readOFF(test_common::data_path("3holes.off"), V, F);
double gradient_size = 50;
double iter = 0;
double stiffness = 5.0;
bool direct_round = 0;
// Compute face barycenters
igl::barycenter(V, F, B);
// Contrain one face
VectorXi b(1);
b << 0;
MatrixXd bc(1, 3);
bc << 1, 0, 0;
// Create a smooth 4-RoSy field
VectorXd S;
igl::copyleft::comiso::nrosy(V, F, b, bc, VectorXi(), VectorXd(), MatrixXd(), 4, 0.5, X1, S);
// Find the orthogonal vector
MatrixXd B1, B2, B3;
igl::local_basis(V, F, B1, B2, B3);
X2 = igl::rotate_vectors(X1, VectorXd::Constant(1, igl::PI / 2), B1, B2);
// Always work on the bisectors, it is more general
igl::compute_frame_field_bisectors(V, F, X1, X2, BIS1, BIS2);
// Comb the field, implicitly defining the seams
igl::comb_cross_field(V, F, BIS1, BIS2, BIS1_combed, BIS2_combed);
// Find the integer mismatches
igl::cross_field_mismatch(V, F, BIS1_combed, BIS2_combed, true, MMatch);
// Find the singularities
igl::find_cross_field_singularities(V, F, MMatch, isSingularity, singularityIndex);
// Cut the mesh, duplicating all vertices on the seams
igl::cut_mesh_from_singularities(V, F, MMatch, Seams);
// Comb the frame-field accordingly
igl::comb_frame_field(V, F, X1, X2, BIS1_combed, BIS2_combed, X1_combed, X2_combed);
// Global parametrization
igl::copyleft::comiso::miq(V,
F,
X1_combed,
X2_combed,
MMatch,
isSingularity,
Seams,
UV,
FUV,
gradient_size,
stiffness,
direct_round,
iter,
5,
true);
// Refresh the test data
// igl::writeDMAT(test_common::data_path("3holes-miq-UV.dmat"),UV);
// igl::writeDMAT(test_common::data_path("3holes-miq-FUV.dmat"),FUV);
igl::readDMAT(test_common::data_path("3holes-miq-UV.dmat"),UV_ref);
igl::readDMAT(test_common::data_path("3holes-miq-FUV.dmat"),FUV_ref);
REQUIRE (1e-6 > (UV-UV_ref).array().abs().maxCoeff());
REQUIRE (1e-6 > (FUV-FUV_ref).array().abs().maxCoeff());
}
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