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igl/python/tutorial/502_LSCMParam.py
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# Add the igl library to the modules search path
import sys, os
sys.path.insert(0, os.getcwd() + "/../")
import pyigl as 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);
# 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()