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Cleaned up python tutorials and added dependency checks to all tutorials

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Former-commit-id: 246017f041
This commit is contained in:
Sebastian Koch
2016-06-07 16:28:06 +02:00
parent c94e83cf08
commit 594aad7067
30 changed files with 621 additions and 513 deletions
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python/tutorial/306_EigenDecomposition.py
+22 -14
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@@ -1,9 +1,15 @@
# Add the igl library to the modules search path
import sys, os
sys.path.insert(0, os.getcwd() + "/../")
# 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()
U = igl.eigen.MatrixXd()
F = igl.eigen.MatrixXi()
@@ -12,7 +18,7 @@ c = 0
bbd = 1.0
twod = False
if not igl.read_triangle_mesh("../../tutorial/shared/beetle.off",V,F):
if not igl.read_triangle_mesh(TUTORIAL_SHARED_PATH + "beetle.off", V, F):
print("failed to load mesh")
twod = V.col(2).minCoeff() == V.col(2).maxCoeff()
@@ -21,40 +27,42 @@ bbd = (V.colwiseMaxCoeff() - V.colwiseMinCoeff()).norm()
L = igl.eigen.SparseMatrixd()
M = igl.eigen.SparseMatrixd()
igl.cotmatrix(V,F,L)
igl.cotmatrix(V, F, L)
L = -L
igl.massmatrix(V,F,igl.MASSMATRIX_TYPE_DEFAULT,M)
igl.massmatrix(V, F, igl.MASSMATRIX_TYPE_DEFAULT, M)
k = 5
D = igl.eigen.MatrixXd()
if not igl.eigs(L,M,k+1,igl.EIGS_TYPE_SM,U,D):
if not igl.eigs(L, M, k + 1, igl.EIGS_TYPE_SM, U, D):
print("Eigs failed.")
U = (U-U.minCoeff())/(U.maxCoeff()-U.minCoeff());
U = (U - U.minCoeff()) / (U.maxCoeff() - U.minCoeff())
viewer = igl.viewer.Viewer()
def key_down(viewer,key,mod):
def key_down(viewer, key, mod):
global U, c
if key == ord(' '):
U = U.rightCols(k)
# Rescale eigen vectors for visualization
Z = bbd*0.5*U.col(c)
Z = bbd * 0.5 * U.col(c)
C = igl.eigen.MatrixXd()
igl.parula(U.col(c),False,C)
c = (c+1)%U.cols()
igl.parula(U.col(c), False, C)
c = (c + 1) % U.cols()
if twod:
V.setcol(2,Z)
V.setcol(2, Z)
viewer.data.set_mesh(V,F)
viewer.data.set_mesh(V, F)
viewer.data.compute_normals()
viewer.data.set_colors(C)
return True
viewer.callback_key_down = key_down
viewer.callback_key_down(viewer,ord(' '),0);
viewer.callback_key_down(viewer, ord(' '), 0)
viewer.core.show_lines = False
viewer.launch()