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Add and fix test for fast_find_self_intersections (#2382)

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* add test case

* add coplanarity test

* another failing test

* use orient3d

* no printing

* reverting... That introduced lots of other failure cases

* subdivided knight case

* wip predicates

* promising predicates version

* tri_tri_overlap compiles, header guards, predicate find_*

* tests for predicates::find_in...

* parallel for

* note

* mv to predicates

* remove old functions

* tutorials; extracting segments is broken 904

* fix extraction bug

* missing header

* capture consts
This commit is contained in:
Alec Jacobson
2024-05-03 12:01:17 -04:00
committed by GitHub
parent 8afe66e8fd
commit 01f2dc0a60
23 changed files with 1616 additions and 716 deletions
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tutorial/904_FastFindIntersections/main.cpp
+28 -8
View File
@@ -4,10 +4,11 @@
#include <igl/opengl/glfw/Viewer.h>
#include <igl/fast_find_intersections.h>
#include <igl/predicates/find_intersections.h>
Eigen::MatrixXd V1,V2;
Eigen::MatrixXi F1,F2;
int mid_1, mid_2;
igl::AABB<Eigen::MatrixXd,3> tree;
@@ -20,21 +21,29 @@ void update_visualization(igl::opengl::glfw::Viewer & viewer)
//shifted intersection object
Eigen::MatrixXd V2_(V2.rows(),V2.cols());
V2_<< V2.col(0), V2.col(1), V2.col(2).array()+slice_z;
viewer.data_list[mid_2].set_vertices(V2_);
Eigen::MatrixXi IF,EE;
Eigen::MatrixXd EV;
Eigen::VectorXi EI;
igl::fast_find_intersections(tree, V1,F1, V2_,F2,false,false,IF,EV,EE,EI);
Eigen::Array<bool,Eigen::Dynamic,1> CP;
igl::predicates::find_intersections(tree, V1,F1, V2_,F2,IF,CP,EV,EE,EI);
// Plot the edges of the intersects
viewer.data().set_edges( EV,EE, Eigen::RowVector3d(1,0,0));
viewer.data_list[mid_1].set_edges( EV,EE, Eigen::RowVector3d(1,1,1));
// show faces which are intersected
Eigen::VectorXi I;
igl::unique(IF,I);
igl::unique(IF.col(0).eval(),I);
Eigen::VectorXd D = Eigen::MatrixXd::Zero(F1.rows(),1);
D(I).setConstant(1.0);
viewer.data().set_data(D,0,1,igl::COLOR_MAP_TYPE_PARULA);
viewer.data_list[mid_1].set_data(D,0,1,igl::COLOR_MAP_TYPE_PARULA);
igl::unique(IF.col(1).eval(),I);
D = Eigen::MatrixXd::Zero(F2.rows(),1);
D(I).setConstant(1.0);
viewer.data_list[mid_2].set_data(D,0,1,igl::COLOR_MAP_TYPE_JET);
}
@@ -71,17 +80,28 @@ int main(int argc, char *argv[])
std::cout<<"'.'/',' push back/pull forward slicing plane."<<std::endl;
std::cout<<std::endl;
min_z=V1.col(2).minCoeff();
max_z=V1.col(2).maxCoeff();
slice_z=(max_z+min_z)/2;
if(argc<=2)
{
min_z=V1.col(2).minCoeff();
max_z=V1.col(2).maxCoeff();
slice_z=(max_z+min_z)/2;
}else
{
slice_z = 0;
}
//center slicing object
V2.col(2).array() -= V2.col(2).array().mean();
// Plot the mesh
igl::opengl::glfw::Viewer viewer;
viewer.data().set_mesh(V2, F2);
viewer.data().set_face_based(true);
mid_2 = viewer.selected_data_index;
viewer.append_mesh();
viewer.data().set_mesh(V1, F1);
viewer.data().set_face_based(true);
mid_1 = viewer.selected_data_index;
update_visualization(viewer);