some error during libqex running

[DragonDLW]

I use a Global parameterization to generate texture coordinates to generate a .obj file and use this .obj file as input to libqex.During the program running，program running error occurs.I guess the error is from global parameterization.Thanks for your reply!
The error follows:
`Exact predicates initialized.
�[1;32mNot using externally supplied vertex valences.�[0m
�[1;32mMeshDecimator::decimate() collapsed 10 edges.�[0m
constructed 11193 valid transition functions -> 30 invalid ones
test exactness of transition functions before preprocessing...
... done!
found 224 inexact transitions in input with max deviation 1.60583e-12
QuadMeshExtraction Preprocess maxmial uv deviaton: 9.53674e-07
test exactness of transition functions...
... done!
�[1;32mMeshDecimator::decimate() collapsed 0 edges.�[0m
�[44mGV 538 (OnVertex) on face 4200: expected_lei_count != _gv.local_edges.size(): 2 != 3, pos_angleSum: 3.14159�[0m
�[44mGV 542 (OnVertex) on face 6856: expected_lei_count != _gv.local_edges.size(): 7 != 2, pos_angleSum: 10.9956�[0m
�[44mGV 543 (OnVertex) on face 4354: expected_lei_count != _gv.local_edges.size(): 5 != 2, pos_angleSum: 7.85398�[0m
�[44mGV 544 (OnVertex) on face 2463: expected_lei_count != _gv.local_edges.size(): 5 != 3, pos_angleSum: 7.85398�[0m
�[44mGV 545 (OnVertex) on face 3424: expected_lei_count != _gv.local_edges.size(): 3 != 1, pos_angleSum: 4.71239�[0m
�[44mGV 546 (OnVertex) on face 966: expected_lei_count != _gv.local_edges.size(): 3 != 1, pos_angleSum: 4.71239�[0m
�[44mGV 549 (OnVertex) on face 2111: expected_lei_count != _gv.local_edges.size(): 5 != 3, pos_angleSum: 7.85398�[0m
�[44mGV 553 (OnVertex) on face 1783: expected_lei_count != _gv.local_edges.size(): 5 != 3, pos_angleSum: 7.85398�[0m
�[44mGV 554 (OnVertex) on face 1873: expected_lei_count != _gv.local_edges.size(): 5 != 1, pos_angleSum: 7.85398�[0m
�[44mGV 555 (OnVertex) on face 2512: expected_lei_count != _gv.local_edges.size(): 5 != 3, pos_angleSum: 7.85398�[0m
�[44mGV 559 (OnVertex) on face 5833: expected_lei_count != _gv.local_edges.size(): 3 != 1, pos_angleSum: 4.71239�[0m
�[44mGV 560 (OnVertex) on face 2605: expected_lei_count != _gv.local_edges.size(): 5 != 1, pos_angleSum: 7.85398�[0m
�[44mGV 561 (OnVertex) on face 2625: expected_lei_count != _gv.local_edges.size(): 5 != 3, pos_angleSum: 7.85398�[0m
�[44mGV 562 (OnVertex) on face 5988: expected_lei_count != _gv.local_edges.size(): 4 != 3, pos_angleSum: 6.28319�[0m
�[44mGV 563 (OnVertex) on face 4864: expected_lei_count != _gv.local_edges.size(): 5 != 1, pos_angleSum: 7.85398�[0m
�[44mGV 565 (OnVertex) on face 5447: expected_lei_count != _gv.local_edges.size(): 5 != 2, pos_angleSum: 7.85398�[0m
�[44mGV 566 (OnVertex) on face 5479: expected_lei_count != _gv.local_edges.size(): 3 != 1, pos_angleSum: 4.71239�[0m
�[44mGV 567 (OnVertex) on face 2671: expected_lei_count != _gv.local_edges.size(): 3 != 2, pos_angleSum: 4.71239�[0m
�[44mGV 568 (OnVertex) on face 2892: expected_lei_count != _gv.local_edges.size(): 19 != 5, pos_angleSum: 29.8451�[0m
########### MeshExtractor #############
#Face -GridVertices: 536
#Edge -GridVertices: 2
#Vertex-GridVertices: 31
ERROR: found invalid connection which does not have a reverse...
vertex 316, 0 found vertex 536, 1
vertex 536, 1 found vertex 165, 1
types are OnFace, OnEdge, OnFace
�[41mWarning: When tracing from GV 316, LEI 0 I hit GV 536, LEI 1.
However, this GV is already connected to GV 165, LEI 1�[0m

Additional debug info

Grid Vertex 316
GridVertex {OnFace, non-boundary, heh: 18710, uv pos: (Point_2(2, 1)), 3d pos: (15.8813 4.00972 3.04271), local_edges: [
LocalEdgeInfo { fh_from.idx(): 4676, uv_from: (Point_2(2, 1)), uv_intended_to: (Point_2(3, 1)), uv_to: (Point_2(2, 1)), connected_to_idx: 536, orientation_idx: 1, face_constructed: 0, accumulated_tf: Rotation: 3, Translation: 2/2, primary: 1, id: 1264 },
LocalEdgeInfo { fh_from.idx(): 4676, uv_from: (Point_2(2, 1)), uv_intended_to: (Point_2(2, 2)), uv_to: (Point_2(2, 2)), connected_to_idx: 69, orientation_idx: 3, face_constructed: 0, accumulated_tf: Rotation: 0, Translation: 0/0, primary: 0, id: 1265 },
LocalEdgeInfo { fh_from.idx(): 4676, uv_from: (Point_2(2, 1)), uv_intended_to: (Point_2(1, 1)), uv_to: (Point_2(1, 1)), connected_to_idx: 252, orientation_idx: 0, face_constructed: 0, accumulated_tf: Rotation: 0, Translation: 0/0, primary: 0, id: 1266 },
LocalEdgeInfo { fh_from.idx(): 4676, uv_from: (Point_2(2, 1)), uv_intended_to: (Point_2(2, 0)), uv_to: (Point_2(2, 0)), connected_to_idx: 199, orientation_idx: 1, face_constructed: 0, accumulated_tf: Rotation: 0, Translation: 0/0, primary: 0, id: 1267 }
] }

Grid Vertex 536
GridVertex {OnEdge, non-boundary, heh: 5214, uv pos: (Point_2(3, 0)), 3d pos: (15.6063 3.65361 2.66772), local_edges: [
LocalEdgeInfo { fh_from.idx(): 950, uv_from: (Point_2(3, 0)), uv_intended_to: (Point_2(2, 0)), uv_to: (Point_2(nan, nan)), connected_to_idx: -1, orientation_idx: -1, face_constructed: 0, accumulated_tf: Rotation: 0, Translation: 0/0, primary: 0, id: 2144 },
LocalEdgeInfo { fh_from.idx(): 950, uv_from: (Point_2(3, 0)), uv_intended_to: (Point_2(3, -1)), uv_to: (Point_2(3, -1)), connected_to_idx: 165, orientation_idx: 1, face_constructed: 0, accumulated_tf: Rotation: 0, Translation: 0/0, primary: 0, id: 2145 },
LocalEdgeInfo { fh_from.idx(): 1366, uv_from: (Point_2(2, 1)), uv_intended_to: (Point_2(2, 2)), uv_to: (Point_2(nan, nan)), connected_to_idx: -1, orientation_idx: -1, face_constructed: 0, accumulated_tf: Rotation: 0, Translation: 0/0, primary: 0, id: 2146 },
LocalEdgeInfo { fh_from.idx(): 1366, uv_from: (Point_2(2, 1)), uv_intended_to: (Point_2(3, 1)), uv_to: (Point_2(nan, nan)), connected_to_idx: -1, orientation_idx: -1, face_constructed: 0, accumulated_tf: Rotation: 0, Translation: 0/0, primary: 0, id: 2147 }
] }

Grid Vertex 165
GridVertex {OnFace, non-boundary, heh: 11198, uv pos: (Point_2(3, -1)), 3d pos: (13.9937 3.65106 2.97779), local_edges: [
LocalEdgeInfo { fh_from.idx(): 2263, uv_from: (Point_2(3, -1)), uv_intended_to: (Point_2(4, -1)), uv_to: (Point_2(4, -1)), connected_to_idx: 509, orientation_idx: 2, face_constructed: 0, accumulated_tf: Rotation: 0, Translation: 0/0, primary: 1, id: 660 },
LocalEdgeInfo { fh_from.idx(): 2263, uv_from: (Point_2(3, -1)), uv_intended_to: (Point_2(3, 0)), uv_to: (Point_2(3, 0)), connected_to_idx: 536, orientation_idx: 1, face_constructed: 0, accumulated_tf: Rotation: 0, Translation: 0/0, primary: 1, id: 661 },
LocalEdgeInfo { fh_from.idx(): 2263, uv_from: (Point_2(3, -1)), uv_intended_to: (Point_2(2, -1)), uv_to: (Point_2(2, -1)), connected_to_idx: 243, orientation_idx: 0, face_constructed: 0, accumulated_tf: Rotation: 0, Translation: 0/0, primary: 1, id: 662 },
LocalEdgeInfo { fh_from.idx(): 2263, uv_from: (Point_2(3, -1)), uv_intended_to: (Point_2(3, -2)), uv_to: (Point_2(3, -2)), connected_to_idx: 202, orientation_idx: 1, face_constructed: 0, accumulated_tf: Rotation: 0, Translation: 0/0, primary: 1, id: 663 }
] }

ERROR: found invalid connection which does not have a reverse...
vertex 536, 3 found vertex 316, 0
vertex 316, 0 found vertex 536, 1
types are OnEdge, OnFace, OnEdge
Assertion failed: gvertices_[target.connected_to_idx].local_edges[target.orientation_idx].accumulated_tf == TF::IDENTITY, file f:\libqex\src\MeshExtractorT.cc, line 1534`

[gaoalexander]

+1, I am having a similar issue. I am using a parametrized .obj which was the result of doing an MIQ solve using the IGL library. Do you have any pointers on what might be the cause of these errors? They generally are of the form:

ERROR: found invalid connection which does not have a reverse...
vertex 973, 2 found vertex 1000, 1
vertex 1000, 1 found vertex -3, 0
types are OnVertex, OnVertex

Thank you!

[hcebke]

I'm sorry you're having this issue. I haven't touched this library, or even this entire field of research, in over 7 years, so I'm afraid at this point I can't be of any help.