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- import sys, os
- # Add the igl library to the modules search path
- sys.path.insert(0, os.getcwd() + "/../")
- import pyigl as igl
- from shared import TUTORIAL_SHARED_PATH, check_dependencies
- dependencies = ["viewer"]
- check_dependencies(dependencies)
- 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_PATH + "camelhead.off", V, F)
- # Fix two points on the boundary
- bnd = igl.eigen.MatrixXi()
- b = igl.eigen.MatrixXi(2, 1)
- igl.boundary_loop(F, bnd)
- b[0] = bnd[0]
- b[1] = bnd[int(bnd.size() / 2)]
- bc = igl.eigen.MatrixXd([[0, 0], [1, 0]])
- # LSCM parametrization
- igl.lscm(V, F, b, bc, V_uv)
- # Scale the uv
- 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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