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- import igl
- V = igl.eigen.MatrixXd()
- F = igl.eigen.MatrixXi()
- V_uv = igl.eigen.MatrixXd()
- def key_down(viewer, key, modifier):
- if key == ord('1'):
- # Plot the 3D mesh
- viewer.data.set_mesh(V,F)
- viewer.core.align_camera_center(V,F)
- elif key == ord('2'):
- # Plot the mesh in 2D using the UV coordinates as vertex coordinates
- viewer.data.set_mesh(V_uv,F)
- viewer.core.align_camera_center(V_uv,F)
- viewer.data.compute_normals()
- return False
- # Load a mesh in OFF format
- igl.readOFF("../tutorial/shared/camelhead.off", V, F)
- # Find the open boundary
- bnd = igl.eigen.MatrixXi()
- igl.boundary_loop(F,bnd)
- # Map the boundary to a circle, preserving edge proportions
- bnd_uv = igl.eigen.MatrixXd()
- igl.map_vertices_to_circle(V,bnd,bnd_uv)
- # Harmonic parametrization for the internal vertices
- igl.harmonic(V,F,bnd,bnd_uv,1,V_uv)
- # Scale UV to make the texture more clear
- V_uv *= 5;
- # Plot the mesh
- viewer = igl.viewer.Viewer()
- viewer.data.set_mesh(V, F)
- viewer.data.set_uv(V_uv)
- viewer.callback_key_down = key_down
- # Disable wireframe
- viewer.core.show_lines = False
- # Draw checkerboard texture
- viewer.core.show_texture = True
- # Launch the viewer
- viewer.launch()
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