xionluhnis / mesh_curvature

Utility to compute mesh curvature on mesh and export it to uv maps

mesh_curvature

Utility to compute mesh curvature on mesh and export it to uv maps

Compile

Compile this project using the standard cmake routine:

mkdir build
cd build
cmake ..
make

This should find and build the dependencies and create a mesh_curvature binary.

Run

From within the build directory just issue:

./mesh_curvature ../models/piggy.obj

A glfw app should launch displaying a 3D cube.

Dependencies

The only dependencies are stl, eigen, libigl and the dependencies of the igl::viewer::Viewer (mandatory: glfw and opengl, optional: nanogui and nanovg).

If you clone the repository recursively, this should be taken care of:

git clone --recursive https://github.com/xionluhnis/mesh_curvature.git

Generating texture data

./mesh_curvature ../models/piggy.obj all 0

will creates the following files in models:

• piggy.obj-H.tsv - the mean curvature at every corner
• piggy.obj-G.tsv - the gaussian curvature at every corner
• piggy.obj-Kx.tsv - the X=1|2-th principal curvature at every corner
• piggy.obj-Kxd.tsv - the X=1|2-th principal curvature 3d vectors at every corner

These tsv files are just list of values at corners (vertex per face). To generate a full image, use matlab:

K1 = dlmread('models/piggy.obj-K1.tsv');
texK1 = generate_texture(K1, 1024);

which you can then save as a texture image.

License

See libigl for its own license. The code example here are distributed under the MIT License.