| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273 |
- import igl
- V = igl.eigen.MatrixXd()
- F = igl.eigen.MatrixXi()
- V_uv = igl.eigen.MatrixXd()
- initial_guess = igl.eigen.MatrixXd()
- show_uv = False
- def key_down(viewer, key, modifier):
- global show_uv, V_uv
- if key == ord('1'):
- show_uv = False
- elif key == ord('2'):
- show_uv = True
- elif key == ord('q'):
- V_uv = initial_guess
- if (show_uv):
- viewer.data.set_mesh(V_uv,F)
- viewer.core.align_camera_center(V_uv,F)
- else:
- viewer.data.set_mesh(V,F)
- viewer.core.align_camera_center(V,F)
- viewer.data.compute_normals()
- return False
- # Load a mesh in OFF format
- igl.readOFF("../tutorial/shared/camelhead.off", V, F)
- # Compute the initial solution for ARAP (harmonic parametrization)
- bnd = igl.eigen.MatrixXi()
- igl.boundary_loop(F,bnd)
- bnd_uv = igl.eigen.MatrixXd()
- igl.map_vertices_to_circle(V,bnd,bnd_uv)
- igl.harmonic(V,F,bnd,bnd_uv,1,initial_guess)
- # Add dynamic regularization to avoid to specify boundary conditions
- arap_data = igl.ARAPData()
- arap_data.with_dynamics = True
- b = igl.eigen.MatrixXi.Zero(0,0);
- bc = igl.eigen.MatrixXd.Zero(0,0);
- # Initialize ARAP
- arap_data.max_iter = 100
- # 2 means that we're going to *solve* in 2d
- igl.arap_precomputation(V,F,2,b,arap_data)
- # Solve arap using the harmonic map as initial guess
- V_uv = igl.eigen.MatrixXd(initial_guess) # important, make a copy of it!
- igl.arap_solve(bc,arap_data,V_uv)
- # Scale UV to make the texture more clear
- V_uv *= 20
- # 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()
|
