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gp-matlab-tutorial's Issues

readOBJ() does not read work as expected

I'm following the tutorials with Octave.
At the moment everything is working fine, until the fourth exercise, where I'm asked to read an obj file.
After moving the working directory to the exercise folder, I read the obj file as follows:

[V, F] = readOBJ('data/bunny.obj');

but it does nothing and the program get stuck during the parsing.
What am I doing wrong? Is there a chance that Octave is using different implementations of the same functions, that cause the program to not work?

Cheers

no triangle() is found after compiling mex

Hi, @odedstein ,

I had compiled the mex without error by following the provided steps. However, there's error when I run
[V,F] = triangle(V,'Flags','-q20-a0.001'); as mentioned in 205_mex.md. And I also found that there's no triangle.[m/cpp/mexa64], but only triangulate.[m/cpp/mexa64] exist. The compiled mex files in my machine are listed as follows:

tree -L 1
.
├── aabb.cpp
├── aabb.mexa64
├── ambient_occlusion.cpp
├── ambient_occlusion.m
├── ambient_occlusion.mexa64
├── angle_derivatives.cpp
├── angle_derivatives.mexa64
├── blue_noise.cpp
├── blue_noise.m
├── blue_noise.mexa64
├── bone_visible.cpp
├── bone_visible_embree.cpp
├── bone_visible_embree.mexa64
├── bone_visible.mexa64
├── box_intersect.cpp
├── box_intersect.m
├── box_intersect.mexa64
├── box_up.h
├── build
├── CGAL_typedefs.h
├── cmake
├── CMakeLists.txt
├── collapse_small_triangles.cpp
├── collapse_small_triangles.m
├── collapse_small_triangles.mexa64
├── decimate_cgal.cpp
├── decimate_cgal.m
├── decimate_cgal.mexa64
├── decimate_libigl.cpp
├── decimate_libigl.m
├── decimate_libigl.mexa64
├── dual_laplacian.cpp
├── dual_laplacian.m
├── dual_laplacian.mexa64
├── eltopo.cpp
├── eltopo.m
├── eltopo.mexa64
├── example.cpp
├── external
├── fast_sparse.cpp
├── fast_sparse.m
├── fast_sparse.mexa64
├── fit_cubic_bezier.cpp
├── fit_cubic_bezier.m
├── fit_cubic_bezier.mexa64
├── fit_rotations_mex.cpp
├── fit_rotations_mex.m
├── fit_rotations_mex.mexa64
├── form_factor.cpp
├── form_factor.m
├── form_factor.mexa64
├── functionSignatures.json
├── gptoolbox_mexopts.m
├── icp.cpp
├── icp.mexa64
├── impaste.cpp
├── impaste.m
├── in_element_aabb.cpp
├── in_element_aabb.m
├── in_element_aabb.mexa64
├── intersect_other.cpp
├── intersect_other.m
├── intersect_other.mexa64
├── libeltopo_release.a
├── libtetgen.a
├── libtinyxml2.a
├── libtriangle.a
├── mesh_boolean.cpp
├── mesh_boolean.m
├── mesh_boolean.mexa64
├── outer_hull.cpp
├── outer_hull.m
├── outer_hull.mexa64
├── paste.h
├── paste.mm
├── point_mesh_squared_distance.cpp
├── point_mesh_squared_distance.m
├── point_mesh_squared_distance.mexa64
├── psd_project_rows.cpp
├── psd_project_rows.m
├── ray_mesh_intersect.cpp
├── ray_mesh_intersect.h
├── ray_mesh_intersect.m
├── ray_mesh_intersect.mexa64
├── README.md
├── read_mesh_from_xml.cpp
├── read_mesh_from_xml.m
├── read_mesh_from_xml.mexa64
├── readMSH.cpp
├── readMSH.m
├── readMSH.mexa64
├── read_triangle_mesh.cpp
├── read_triangle_mesh.mexa64
├── reorient_facets.cpp
├── reorient_facets.m
├── reorient_facets.mexa64
├── segment_graph.cpp
├── segment_graph.m
├── segment_graph.mexa64
├── segment_list.h
├── segment_segment_intersection.cpp
├── selfintersect.cpp
├── selfintersect.m
├── selfintersect.mexa64
├── signed_distance.cpp
├── signed_distance_isosurface.cpp
├── signed_distance_isosurface.m
├── signed_distance_isosurface.mexa64
├── signed_distance.m
├── signed_distance.mexa64
├── simplify_polyhedron.cpp
├── simplify_polyhedron.mexa64
├── slim.cpp
├── slim.m
├── slim.mexa64
├── snap_rounding.cpp
├── snap_rounding.m
├── snap_rounding.mexa64
├── solid_angle.cpp
├── solid_angle.mexa64
├── tetrahedralize.cpp
├── tetrahedralize.m
├── tetrahedralize.mexa64
├── triangulate.cpp
├── triangulate.m
├── triangulate.mexa64
├── trim_with_solid.cpp
├── trim_with_solid.m
├── trim_with_solid.mexa64
├── upper_envelope.cpp
├── upper_envelope.m
├── upper_envelope.mexa64
├── winding_number
├── winding_number.cpp
├── winding_number.m
├── winding_number.mexa64
├── winding_number_ray.h
├── wire_mesh.cpp
├── wire_mesh.m
└── wire_mesh.mexa64

I've tried calling the function triangulate(), but did not get the triangulation output as in 205_mex.md.
Any hints to solve this issue?
Thanks~

How to better verify the Gouraud shading on exercise 6?

I am trying to replicate the results displayed in the video. [min 14 https://www.youtube.com/watch?v=NGathaVRyDA ]

But after running this command

>> t = tsurf(F,V);
>> set(t, 'FaceLighting','gouraud');
>> set(t, 'FaceColor','interp');

My shading and lighting conditions stay the same.
Any ideas?

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