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- from __future__ import print_function
- import igl
- V = igl.eigen.MatrixXd()
- F = igl.eigen.MatrixXi()
- igl.readOFF("../tutorial/shared/decimated-knight.off",V,F)
- # 100 random indicies into rows of F
- I = igl.eigen.MatrixXi()
- igl.floor((0.5*(igl.eigen.MatrixXd.Random(100,1)+1.)*F.rows()),I);
- # 50 random indicies into rows of I
- J = igl.eigen.MatrixXi()
- igl.floor((0.5*(igl.eigen.MatrixXd.Random(50,1)+1.)*I.rows()),J)
- # K = I(J);
- K = igl.eigen.MatrixXi()
- igl.slice(I,J,K)
- # default green for all faces
- #C = p2e(np.array([[0.4,0.8,0.3]])).replicate(F.rows(),1)
- C = igl.eigen.MatrixXd([[0.4,0.8,0.3]]).replicate(F.rows(),1)
- # Red for each in K
- R = igl.eigen.MatrixXd([[1.0,0.3,0.3]]).replicate(K.rows(),1)
- # C(K,:) = R
- igl.slice_into(R,K,1,C)
- # Plot the mesh with pseudocolors
- viewer = igl.viewer.Viewer()
- viewer.data.set_mesh(V, F)
- viewer.data.set_colors(C)
- viewer.launch()
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