def update_visualization(viewer):
global V, F, T, tree, FN, VN, EN, E, EMAP, max_distance, slice_z, overlay
plane = igl.eigen.MatrixXd([
0.0, 0.0, 1.0,
-((1 - slice_z) * V.col(2).minCoeff() + slice_z * V.col(2).maxCoeff())
])
V_vis = igl.eigen.MatrixXd()
F_vis = igl.eigen.MatrixXi()
# Extract triangle mesh slice through volume mesh and subdivide nasty triangles
J = igl.eigen.MatrixXi()
bary = igl.eigen.SparseMatrixd()
igl.marching_tets(V, T, plane, V_vis, F_vis, J, bary)
max_l = 0.03
while True:
l = igl.eigen.MatrixXd()
igl.edge_lengths(V_vis, F_vis, l)
l /= (V_vis.colwiseMaxCoeff() - V_vis.colwiseMinCoeff()).norm()
if l.maxCoeff() < max_l:
break
bad = l.rowwiseMaxCoeff() > max_l
notbad = l.rowwiseMaxCoeff() <= max_l # TODO replace by ~ operator
F_vis_bad = igl.eigen.MatrixXi()
F_vis_good = igl.eigen.MatrixXi()
igl.slice_mask(F_vis, bad, 1, F_vis_bad)
igl.slice_mask(F_vis, notbad, 1, F_vis_good)
igl.upsample(V_vis, F_vis_bad)
F_vis = igl.cat(1, F_vis_bad, F_vis_good)
# Compute signed distance
S_vis = igl.eigen.MatrixXd()
I = igl.eigen.MatrixXi()
N = igl.eigen.MatrixXd()
C = igl.eigen.MatrixXd()
# Bunny is a watertight mesh so use pseudonormal for signing
igl.signed_distance_pseudonormal(V_vis, V, F, tree, FN, VN, EN, EMAP,
S_vis, I, C, N)
# push to [0,1] range
S_vis = 0.5 * (S_vis / max_distance) + 0.5
C_vis = igl.eigen.MatrixXd()
# color without normalizing
igl.parula(S_vis, False, C_vis)
if overlay:
append_mesh(C_vis, F_vis, V_vis, V, F,
igl.eigen.MatrixXd([[0.8, 0.8, 0.8]]))
viewer.data().clear()
viewer.data().set_mesh(V_vis, F_vis)
viewer.data().set_colors(C_vis)
viewer.core.lighting_factor = overlay
def update_visualization(viewer):
global V, F, T, tree, FN, VN, EN, E, EMAP, max_distance, slice_z, overlay
plane = igl.eigen.MatrixXd([0.0, 0.0, 1.0, -((1 - slice_z) * V.col(2).minCoeff() + slice_z * V.col(2).maxCoeff())])
V_vis = igl.eigen.MatrixXd()
F_vis = igl.eigen.MatrixXi()
# Extract triangle mesh slice through volume mesh and subdivide nasty triangles
J = igl.eigen.MatrixXi()
bary = igl.eigen.SparseMatrixd()
igl.slice_tets(V, T, plane, V_vis, F_vis, J, bary)
max_l = 0.03
while True:
l = igl.eigen.MatrixXd()
igl.edge_lengths(V_vis, F_vis, l)
l /= (V_vis.colwiseMaxCoeff() - V_vis.colwiseMinCoeff()).norm()
if l.maxCoeff() < max_l:
break
bad = l.rowwiseMaxCoeff() > max_l
notbad = l.rowwiseMaxCoeff() <= max_l # TODO replace by ~ operator
F_vis_bad = igl.eigen.MatrixXi()
F_vis_good = igl.eigen.MatrixXi()
igl.slice_mask(F_vis, bad, 1, F_vis_bad)
igl.slice_mask(F_vis, notbad, 1, F_vis_good)
igl.upsample(V_vis, F_vis_bad)
F_vis = igl.cat(1, F_vis_bad, F_vis_good)
# Compute signed distance
S_vis = igl.eigen.MatrixXd()
I = igl.eigen.MatrixXi()
N = igl.eigen.MatrixXd()
C = igl.eigen.MatrixXd()
# Bunny is a watertight mesh so use pseudonormal for signing
igl.signed_distance_pseudonormal(V_vis, V, F, tree, FN, VN, EN, EMAP, S_vis, I, C, N)
# push to [0,1] range
S_vis = 0.5 * (S_vis / max_distance) + 0.5
C_vis = igl.eigen.MatrixXd()
# color without normalizing
igl.parula(S_vis, False, C_vis)
if overlay:
append_mesh(C_vis, F_vis, V_vis, V, F, igl.eigen.MatrixXd([[0.8, 0.8, 0.8]]))
viewer.data.clear()
viewer.data.set_mesh(V_vis, F_vis)
viewer.data.set_colors(C_vis)
viewer.core.lighting_factor = overlay