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I have a textured mesh with 4958437 vn 9912299 fn (1.2GB OBJ file) that somehow crashes TriEdgeCollapseQuadricTex. Any idea how to debug this?

Starting Script of 1 actionsfilter: Simplification: Quadric Edge Collapse Decimation (with texture)
meshlabserver: ../../../../vcglib/vcg/complex/algorithms/local_optimization/tri_edge_collapse_quadric_tex.h:358: vcg::tri::TriEdgeCollapseQuadricTex<TriMeshType, VertexPair, MYTYPE, HelperType>::ScalarType vcg::tri::TriEdgeCollapseQuadricTex<TriMeshType, VertexPair, MYTYPE, HelperType>::ComputeTexPriority(const double*, vcg::Quadric5&, vcg::BaseParameterClass*) [with TriMeshType = CMeshO; VertexPair = vcg::tri::BasicVertexPair; MYTYPE = vcg::tri::MyTriEdgeCollapseQTex; HelperType = vcg::tri::QuadricTexHelper; vcg::tri::TriEdgeCollapseQuadricTex<TriMeshType, VertexPair, MYTYPE, HelperType>::ScalarType = float]: Assertion `!math::IsNAN(ndiff)' failed.

Hi,
I am the author of the R-package Rvcg based on vcglib. I get the following ubsan messages

vcglib/vcg/complex/allocate.h:984:32: runtime error: addition of unsigned offset to 0x7f7f83c53800 overflowed to 0x7f7f83c53798
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior vcglib/vcg/complex/allocate.h:984:32 in 
vcglib/vcg/complex/allocate.h:1012:35: runtime error: addition of unsigned offset to 0x7f7f83c53800 overflowed to 0x7f7f83c53798
SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior vcglib/vcg/complex/allocate.h:1012:35 in 

I cannot submit a new package version until this is fixed (I can patch my version of the code without bothering upstream. Any help would be highly appreciated.

I am using vcglib for a research project relating to 3D reconstruction. I hope you can help me out with a bug in vcg lib.

Everything is good until I tried to enable the flag "VCG_USE_EIGEN" because it seems more convenient, for example, to multiply a scalar with vcg::Point3f just by typing vcg::Point3f p = 0.3 * vcg::Point3f(1,2,3), which can't be done with deprecated_point3.h

It seems the include code in eigen.h still import
"#include "../../eigenlib/Eigen/Array" even it's removed in eigen 3.xx.

I am compiling vcglib in Windows 10, branch devel.

I compiled it in debug and release without any errors with the following environment:

Windows 10 32 bit MSVC 2015 V14 compiler

When I execute my program

C:\Users\me\Documents\projectCGALII\build\Debug>cgal_vtk_test.exe pig.stl

and i get the following error:

Assertion failed: j>=0 && jVN(), file C:\vcglib-1.0.1\vcg/simplex/face/component_polygon.h, line 70

See the attached files please(ignore cgal strings). What's wrong?

https://drive.google.com/open?id=1fEqZft_OhHxTsAvio58_TWOtvrYbGCOA

-----------------------------------------------------------------Code----------------------------------------------------------

int  nonManifoldEdge(const char* filename)
{
    int loadmask;
    vcg::tri::io::ImporterSTL<PMesh>::OpenBinary(pm, filename, loadmask);
    //vcg::tri::UpdateTopology<PMesh>::FaceFace(pm);
    //vcg::tri::Clean<PMesh>::RemoveNonManifoldFace(pm);
    //vcg::tri::UpdateTopology<PMesh>::FaceFace(pm);
    //assert(vcg::tri::Clean<PMesh>::CountNonManifoldEdgeFF(pm));
    return vcg::tri::Clean<PMesh>::CountNonManifoldEdgeFF(pm);
}

int main(int argc, char* argv[])
{
    std::cout << "Count non manifold Edge: " << nonManifoldEdge(argv[1]) << std::endl;
    return 0;
}

I run command./trimesh_clustering ./Zeus.obj.ply out.ply, but I get this,

Input mesh vn:152059 fn:304114
Clustering to 95472 cells
Grid of 51 x 26 x 72 cells
with cells size of 0.48 x 0.49 x 0.48 units
trimesh_clustering: vcglib/vcg/simplex/vertex/component.h:75: vcg::vertex::EmptyCore::ColorType& vcg::vertex::EmptyCore::C() [with TT = MyUsedTypes; vcg::vertex::EmptyCore::ColorType = vcg::Color4]: Assertion `0' failed.
Aborted

ply
format ascii 1.0
comment VCGLIB generated
element vertex 152059
property float x
property float y
property float z
property int flags
property uchar red
property uchar green
property uchar blue
property uchar alpha
element face 304114
property list uchar int vertex_indices
end_header
-6.17266 0.227923 17.2279 0 192 192 192 255
-6.21338 0.633413 26.6069 0 192 192 192 255
2.48586 -2.95844 27.9508 0 192 192 192 255
1.00704 -3.94445 24.3854 0 192 192 192 255

vcg::tri::io::ExporterPLY::Save function in /vcglib/wrap/io_trimesh/export_ply.h doesn't work correctly when ply has mesh and texture and is ascii format. Output ply file has broken texture.

Now line 562 is
for(int k=0;kVN()*2;++k)
I guess it should be
for (int k=0;kVN();++k)

Here in the edge_collapse.h of master branch. Why is it V(0)<V(0) instead of V(0)<V(1) ? V(0)<V(0) would always be evaluated to false, and std::swap would never be executed. Plus the two input arguments of std:swap are problematic.

The problem occurs the function,

template <class MeshType, class InCoordType, class InFaceIndexType >
void BuildMeshFromCoordVectorIndexVector(MeshType & in, const std::vector<InCoordType> & v, const std::vector<InFaceIndexType> & f)

which is line 698-699 of complex/algorithms/create/platonic.h.

Basically the offending code is in lines 721-733

for(size_t i=0;i<f.size();++i)
  {
    const InFaceIndexType &ff= f[i];
    assert( ff[0]>=0 );
    assert( ff[1]>=0 );
    assert( ff[2]>=0 );
    assert( ff[0]<in.vn );
    assert( ff[1]<in.vn );
    assert( ff[2]<in.vn );
    in.face[i].V(0) = &in.vert[ ff[0] ];
    in.face[i].V(1) = &in.vert[ ff[0] ];
    in.face[i].V(2) = &in.vert[ ff[0] ];
}

Specifically the vertex assignments should read

in.face[i].V(0) = &in.vert[ ff[0] ];
in.face[i].V(1) = &in.vert[ ff[1] ];
in.face[i].V(2) = &in.vert[ ff[2] ];

Also the assert statements may be grouped more efficiently as,

assert( ff[0]>=0 && ff[0] < in.vn );

for each face.

Additionally the code in lines 715-719 appears to be of no use since the

std::vector<VertexPointer> index(in.vn);

does not appear to have a purpose.

I come across this error when i using vcg .
My computer system is windows 10 ,visual stuido 2017 64bit
in the file \vcg\complex\algorithms\create\ball_pivoting.h line 204

please check

Hi,

I am trying to make the samples compile on Linux but it is being very hard to fix the large amount of error...
I am using gcc 4.8 and QtCreator 5.7.1

Hi,

I tested tridecimator with different models but with every model, I lost all texture colors/material information after the simplification. I tried each and every option available in tridecimator but all in vain. There is also one bug i.e irrespective of which model file I give as input(e.g obj, stl etc), it always output in .ply format. I spotted the bug in tridecimator.cpp file but don't know how to fix it. It is the second last line of this file and it is "vcg::tri::io::ExporterPLY::Save(mesh,argv[2]);" with the header file #include <wrap/io_trimesh/export_ply.h>.

The texture color/material information is really important for me. Any help in this regards would be much appreciated. Thanks

Regards,
Waseem Khan

In 2020.02+git200217-1 uploaded to debian unstable and synced to Ubuntu 20.04, builds fail on arm64, armhf, ppc64el & s390x with multiple errors of the form:

/<<BUILDDIR>>/meshlab-2020.02+git200217/vcglib/vcg/complex/algorithms/create/mc_lookup_table.h:454:5: error: narrowing conversion of ‘-6’ from ‘int’ to ‘char’ [-Wnarrowing]

lines referred to from 323 to 2556, so most of that header.

https://buildd.debian.org/status/package.php?p=meshlab&suite=sid

https://launchpad.net/ubuntu/+source/meshlab/2020.02+git200217-1

Perhaps a sprinkling of signed char is required.

When I complie vcglib in my application, compiler noticed "C2589", error C2589: “(”:“::” illegal right mark.
ScalarType origQual= std::numeric_limits<double>::max();

Could the vcg lib be compiled to mobile, such as android platform? How to do it?

I want copy one mesh to another mesh. So I find a function in append.h. But when I use it, I find the following description. But I find it will lose some information when copying.

It only copy the attributes in both meshes. But I don't understand the attributes mean. How to copy all of the MeshRight? so I can get the MeshLeft the same with MeshRight.

I Have problems in GCC 4.9.3:
/usr/local/vcg/wrap/io_trimesh/import_obj.h:280:41: error: ‘Allocator’ is not a member of ‘vcg::tri’

How to fix this?
I can't fix this yet.

I'm trying to simplify 120k triangle mesh to 9k with code in tridecimator.cpp sample.
Approximately at 70k triangles it runs very slow, so it will take maybe some hours to obtain result.
Have compiled with Intel c++ 17.0 & O3 & openMP support & ocf types. Windows 10.
Meshlab returns result approximately in 10 seconds.
Whats wrong?

In glarea.cpp, there is a line:

#include <vcg/space/normal_extrapolation.h>

However, this normal_extrapolation.h does not exist in the project (it seems to be in an older version of this project). I wonder whether this file is not needed anymore or wrongly be deleted?

Hi,
I am newbie to the VCG library. I downloaded the library file from github. I tried to run an example code, but i m getting errors as shown below.

Error 9 error LNK2019: unresolved external symbol "public: unsigned int __thiscall vcg::ply::PropDescriptor::memtypesize(void)const " (?memtypesize@PropDescriptor@ply@vcg@@QBEIXZ) referenced in function "public: static int __cdecl vcg::tri::io::ImporterPLY::Open(class MyMesh &,char const *,class vcg::tri::io::PlyInfo &)" (?Open@?$ImporterPLY@VMyMesh@@@io@tri@vcg@@SAHAAVMyMesh@@PBDAAVPlyInfo@234@@z) c:\Users\CoitorHP\documents\visual studio 2013\Projects\VcgLibTest\VcgLibTest\Source.obj VcgLibTest
Error 10 error LNK2019: unresolved external symbol "public: char const * __thiscall vcg::ply::PropDescriptor::stotypename(void)const " (?stotypename@PropDescriptor@ply@vcg@@QBEPBDXZ) referenced in function "public: static int __cdecl vcg::tri::io::ExporterPLY::Save(class MyMesh &,char const ,bool,class vcg::tri::io::PlyInfo &,bool (__cdecl)(int,char const *))" (?Save@?$ExporterPLY@VMyMesh@@@io@tri@vcg@@SAHAAVMyMesh@@PBD_NAAVPlyInfo@234@P6A_NH1@Z@Z) c:\Users\CoitorHP\documents\visual studio 2013\Projects\VcgLibTest\VcgLibTest\Source.obj VcgLibTest
Error 11 error LNK2019: unresolved external symbol "private: void __thiscall vcg::ply::PlyFile::compile(class vcg::ply::PlyElement *)" (?compile@PlyFile@ply@vcg@@AAEXPAVPlyElement@23@@z) referenced in function "public: void __thiscall vcg::ply::PlyFile::SetCurElement(int)" (?SetCurElement@PlyFile@ply@vcg@@qaexh@Z) c:\Users\CoitorHP\documents\visual studio 2013\Projects\VcgLibTest\VcgLibTest\Source.obj VcgLibTest

Please help me to solve this issue. I heard no lib file is needed to run the vcg, but i dont know why i am getting this linker error. Thanks in advance.

I have attached a minimal example of two faces that are incorrectly identified as self-intersecting.

SelfIntersecting.zip

Hi,

I don't know, how can I use this vcglib? My main goal is to reduce the size of a model(<100,000 triangles).
I am using Microsoft Windows 7 with Visual Studio 2017. The only way that I figured out is to compile and build the "vcglib-master\vcglib-master\apps\test\tetramesh" or "vcglib-master\vcglib-master\apps\test\trackball" in visual Studio 2017 to generate .exe file to serve my purpose. I tried this one(vcglib-master\vcglib-master\apps\test\tetramesh) but during proces of building this project, I got an error:

vcglib-master\vcglib-master\apps\test\tetramesh\test\test.cpp(1): fatal error C1083: Cannot open include file: 'simplex\vertex\with\a.h': No such file or directory

Any idea where I can find this missing file and other files? The other project is not compatible(I don't know why). As I am new to this, any help would be much appreciated.
Thanks.

Best,
Waseem Khan

std::vector< std::pair<int,FacePointer> > CCV;

How to print CCV vector , i mean write individual connected components in separate .ply file... ??

Compile vcglib meet "C2019"error 严重性 代码 说明 项目 文件 行 禁止显示状态
错误 LNK2019 无法解析的外部符号 "public: unsigned __int64 __cdecl vcg::ply::PropDescriptor::memtypesize(void)const " (?memtypesize@PropDescriptor@ply@vcg@@QEBA_KXZ)，该符号在函数 "public: static int __cdecl vcg::tri::io::ImporterPLY::Open(class MyMesh &,char const *,class vcg::tri::io::PlyInfo &)" (?Open@?$ImporterPLY@VMyMesh@@@io@tri@vcg@@SAHAEAVMyMesh@@PEBDAEAVPlyInfo@234@@z) 中被引用 ConsoleApplication4 C:\Users\SuLi\source\repos\ConsoleApplication4\ConsoleApplication4\ConsoleApplication4.obj 1
What should I do?
and also what should I do if I want to use vcglib in clion?
I 'm a green hand in this,thank you for your help!

These files don't exist in vcglib:

WARNING: Failure to find: ../../../../vcglib/wrap/openfbx/src/ofbx.cpp
WARNING: Failure to find: ../../../../vcglib/wrap/openfbx/src/miniz.c

f2bbdb7
This commit strips some headers witch in results in error when building meshlab on linux system.
Error message:

../../../vcglib/vcg/container/simple_temporary_data.h:52:64: error: ‘memcpy’ was not declared in this scope
         if(datasize!=0) memcpy(newdataLoc,data,sizeof(datasize));
                                                                ^
../../../vcglib/vcg/container/simple_temporary_data.h: In member function ‘void vcg::VectorNBW<bool>::resize(const int&)’
../../../vcglib/vcg/container/simple_temporary_data.h:64:57: error: ‘memset’ was not declared in this scope
         memset(&data[oldDatasize],0,datasize-oldDatasize);

For the sample, under apps/sample/polygonmesh_quadsimpl,
there were build errors, part of them as the following,

polygonmesh_quadsimpl.cpp:70:9: error: ‘EdgePlane’ is not a member of ‘vcg::face’
face::EdgePlane
^
polygonmesh_quadsimpl.cpp:70:9: error: ‘EdgePlane’ is not a member of ‘vcg::face’

The vcg::tri::Index function makes only sense when sequential containers are used but not only sequential containers can be used for the Mesh struct. Furthermore in the case where sequential containers are used this function could still produce wrong results if for example the vertex index (2nd argument) was acquired as a copy and not as a reference from the mesh.

Hi, My Env:
OS: Ubuntu 16.04.1
GCC: 5.4.0

Bugs found so far:

.../vcglib/apps/sample/trimesh_voronoisampling/trimesh_voronoisampling.cpp:123: error: ‘FixVertexVector’ is not a member of ‘vcg::tri::VoronoiProcessing’
tri::VoronoiProcessing<MyMesh, tri::EuclideanDistance >::FixVertexVector(baseMesh,fixedSeedVec);
^

2. ```
.../vcglib/vcg/simplex/vertex/base.h:24: error: #error "This file should not be included alone. It is automatically included by complex.h"
 #error "This file should not be included alone. It is automatically included by complex.h"
  ^

/usr/local/include/vcg/simplex/vertex/base.h:24: error: #error "This file should not be included alone. It is automatically included by complex.h"
#error "This file should not be included alone. It is automatically included by complex.h"
^

4. ```
.../vcglib/apps/quadrangulator/quadrangulator.cpp:142: error: ‘MIQ_parametrization’ was not declared in this scope
     if (! MIQ_parametrization<CMesh>::IsValid(trimesh) )
           ^

Suggestions:

• Do Not use "using namespace std;", instead, use "std::"? Other namespace the same...

• Give a more specific example for how to use the complex.h ? I did get a lot of ERROR messages as the above mentioned bug 3.

Thank you very much
Cheers
Pei

Could not compile neither nanoply_vcg/nanoply_vcg.pro or nanoply_demo/nanoply_demo.pro under linux using both gcc and clang. Haven't checked visualc++ compiler yet. Multiple errors such as:

vcglib/wrap/nanoply/include/nanoply.hpp:2479: error: expected primary-expression before ‘char’
2479 | DescriptorHelper<ContainerType, VectorSize, ScalarType>::ReadBinary(

Hi,

I am trying to install openMVS with CUDA. i am facing this error

MVS/Mesh.cpp:1000:6: error: ‘class vcg::tri::TriEdgeCollapseQuadricParameter’ has no member named ‘BoundaryWeight’

// mesh definition
#include <vcg/simplex/vertex/with/afvn.h>**
#include <vcg/simplex/face/with/af.h>**

in the vcg folder, no where i can find afvn.h and af.h in the simplex moudle, does it be removed or mergerd?

Using example in "apps\sample\trimesh_ball_pivoting" . I provided .ply files with 30000 points and 0 faces , it produces same ply file. ( I mean no faces are generated.... )

Hi there! I'm trying to use the AdvancingFront class for a mesh generation task, but I am having a very hard time understanding what my implementation of the Seed and Place virtual methods are meant to do, and the comments in the source code aren't really helping me.

Would it be possible to get more documentation into that file, or at the very least a simple explanation of what each of those methods is meant to do? Thank you so much!

The OFFImporter, starting from ac56acd, has a method OpenStream in its public interface allowing to import mesh starting from std::istream. This is quite useful when having a previously allocated blob containing the mesh of interest and there is not need to open a file.

Is there any plan to use the same kind of interface in the other importers?

On windows systems the FILE operations do not read the same in binary/ascii mode.
The bug will appear in both Master and Devel

A minimal example using the same values from stl_reader:

    const char * filename = R"###(test.stl)###";
    FILE *fp = fopen(filename, "r");

    fseek(fp, 0, SEEK_END);
    long file_size = ftell(fp);
    unsigned int facenum;
    std::cout << "File size: " << file_size << std::endl;

    fseek(fp, 80, SEEK_SET);
    std::cout << "Current Position: " << ftell(fp) << std::endl;

    fread(&facenum, sizeof(unsigned int), 1, fp);
    std::cout << "Position after reading '4' bytes: " << ftell(fp) << std::endl;
    std::cout << "Number of faces: " << facenum << std::endl;

    int expected_file_size=80 + 4 + (sizeof(short)+48 )*facenum ;
    std::cout << "Expected file size is: " << expected_file_size << std::endl;

And the corresponding output;

File size: 23279484
Current Position: 80
Position after reading '4' bytes: 4176
Number of faces: 183842228
Expected file size is: 602176892

Due to this the condition for filesize == expected_file_size fails and if(abs(file_size-expected_file_size) > file_size/20 ) will result in a Non-Binary result and vcg will return a malformed file error.

Now if we change the fopen mode to 'rb' we get the following output:

File size: 23279484
Current Position: 80
Position after reading '4' bytes: 84
Number of faces: 465588
Expected file size is: 23279484

Stack Overflow issue about ftell

Hi,

The curvature sample crashes with:
Assertion failed: (0), function Kh, file ../../../vcg/simplex/vertex/component.h, line 140.
When called from vcg::tri::UpdateCurvature<MyMesh>::MeanAndGaussian(m); in the sample code.

(There was a reference to this in an old thread in sourceforge, but a solution wasn't posted).

I'm compiling this without QMake, using instead c++ -g -O0 -std=c++11 -Wall -isystem../../../ trimesh_curvature.cpp -o trimesh_curvature, which compiles without any issue.

Cheers,
J

io_mask.h Line 131 should check IOM_VERTNORMAL
import_obj.h line 703 should check for BitFlags per face.

The program crashes when importing dae files. I use ml_mesh_type.h in meshlab, and then I import dae file like this:

QFile filePos(file);
if(!filePos.exists())
{
return;
}
QFileInfo fileInfo(filePos);
CMeshO m;
vcg::tri::io::InfoDAE info;
if (!vcg::tri::io::ImporterDAE::LoadMask(file.toStdString().c_str(), info))
{
return;
}
qDebug() << "ConverDAE2OBJ: mask loaded";
vcg::tri::io::ImporterDAE::Open(m, file.toStdString().c_str(), info);

The program crashes in import_dae.h at: tri::Append<OpenMeshType,ColladaMesh>::Mesh(m,newMesh);.

Can anyone help me to code the exporteru3d with the vcglib?? here is my code so far
vcg::tri::io::ExporterU3D<MyMesh>::Save(m, "U3dTesting.u3d", "C:/Program Files/VCG/MeshLab/plugins/U3D_W32/IDTFConverter.exe",vcg::tri::io::u3dparametersclasses::Movie15Parameters,vcg::tri::io::ExporterU3D<MyMesh>::GetExportMaskCapability());
im not understand the u3dparametersclasses, can someone explain for me?

Hi,

I am having trouble to load mesh file using vcglib. I tried trimesh_base under "/vcg/apps/sample/trimesh_base" to load my mesh file (tried both obj and ply formats), but it doesn't work. The error message is "Invalid file: OFF file should have in the first line the OFF keyword as a first token". The mesh file can be open in meshlab, so I assume the mesh file is correct.

I also tried "vcg::tri::io::ImporterPLY::Open", which doesn't compile for me. The compile error is: " undefined reference to `vcg::ply::PlyFile::AddToRead(char const*, char const*, int, int, unsigned long, int, int, int, int, unsigned long)' ".

Could anyone give me some suggestions to solve this? I couldn't find helpful information online. I appreciate the help in advance.

Hi,

I have a problem with a particular file which crashes the collada importer. You can download it from my dropbox. My program code is also there. I was in the process of writing a little command line utility to give me the mass properties of a mesh.
https://www.dropbox.com/sh/6so4j8ek3tsxd2k/AAD1z8HK-sHmPHlvNM0R_d_wa?dl=0

----- Starting the processing of /home/michael/Dropbox/bugreports/vcglib/Foot.dae ------
File Contains 1 Scenes
Scene 0 contains 1 instance_visual_scene 
instance_visual_scene 0 refers Scene 
instance_visual_scene Scene has 1 children
Processing Visual Scene child 0 - of type 'node'
Starting processing <node> with id Foot
getTrans form node with tag node
** instance_geometry with url #Foot-mesh (intial mesh size 0 0 T = 0)
**** Loading a Geometry Mesh **** (initial mesh size 0 0)
****** LoadTriangularMesh (initial mesh size 3245 0)
******    material id '' -> ''
******   but we were not able to find the corresponding image node
********* WARNING face 60, (126 126 606) is a DEGENERATE FACE!
********* WARNING face 64, (134 134 646) is a DEGENERATE FACE!
********* WARNING face 66, (137 137 666) is a DEGENERATE FACE!
********* WARNING face 76, (131 131 766) is a DEGENERATE FACE!
********* WARNING face 80, (125 125 806) is a DEGENERATE FACE!
********* WARNING face 92, (152 152 926) is a DEGENERATE FACE!
********* WARNING face 97, (177 177 976) is a DEGENERATE FACE!
********* WARNING face 104, (189 189 1046) is a DEGENERATE FACE!
********* WARNING face 119, (201 201 1196) is a DEGENERATE FACE!
********* WARNING face 127, (239 239 1276) is a DEGENERATE FACE!
********* WARNING face 128, (243 243 1286) is a DEGENERATE FACE!
********* WARNING face 133, (258 258 1336) is a DEGENERATE FACE!
********* WARNING face 137, (267 267 1376) is a DEGENERATE FACE!
********* WARNING face 151, (287 287 1516) is a DEGENERATE FACE!
********* WARNING face 163, (288 288 1636) is a DEGENERATE FACE!
********* WARNING face 190, (336 336 1906) is a DEGENERATE FACE!
********* WARNING face 231, (415 415 2316) is a DEGENERATE FACE!
********* WARNING face 258, (466 466 2586) is a DEGENERATE FACE!
mass_properties: /opt/vcglib/wrap/io_trimesh/import_dae.h:418: static vcg::tri::io::UtilDAE::DAEError vcg::tri::io::ImporterDAE<OpenMeshType>::LoadTriangularMesh(QDomNodeList&, vcg::tri::io::ImporterDAE<OpenMeshType>::ColladaMesh&, std::size_t, vcg::tri::io::InfoDAE&, QMap<QString, QString>&) [with OpenMeshType = MyMesh; std::size_t = long unsigned int]: Assertion `indvt + offset < m.vert.size()' failed.
Aborted (core dumped)

Tried the master branch and the v.1.0.1 tag with identical results.

The mesh was exported from Blender. By the Robot Designer tool, if that matters. It manages to crash Meshlab from the ubuntu 16 repo, too. So, I guess the crash not caused by user error.

Cheers,
Michael

devel branch
in file \vcglib\apps\QT\trimesh_QT_shared\glarea.cpp line 224.
It seems setPerViewInfo func don't use three para.

OK, here is a definitive one:
https://github.com/cnr-isti-vclab/vcglib/blob/master/vcg/complex/algorithms/refine_loop.h#L106 (and some following lines)
You get a negative index for k < 3. My current patch looks like this:
https://github.com/zarquon42b/Rvcg/blob/develop/src/vcglib/patches/16_refine_loop_ubsan.patch
If you think this is viable, I can issue a PR.

I tried opening a binary .ply file with float64 precision.

The assertion in
https://github.com/cnr-isti-vclab/vcglib/blob/master/wrap/ply/plylib.cpp#L186
is triggered in that case.
float32 is working fine

The latest VCG release has a bug in the TriEdgeCollapseQuadric simplification algorithm that causes the process to get extremely slow. The simplification finishes but instead of taking for example ~2min (normal time), it takes 15hours. This issue manifests both on windows and linux, and it appeared sometime after MeshLab version 1.3.3.

If needed, I have a mesh to reproduce the problem (but is around 450MB), but I think any big mesh will do it.

When saving PLY files as ascii there is a loss in precision, which I believe is caused in https://github.com/cnr-isti-vclab/vcglib/blob/master/wrap/io_trimesh/export_ply.h#L405 when printf-ing the point coordinates. The modifier %g does not specify the number of decimal places, and for large numbers it can lead to losing decimal places. I would like to request to output at least 4 decimals every time.

Allow using system eigen instead of included packaged one as it could be outdated.

When building meshlab on Linux compiler complains about

no matching function for call to ‘vcg::tri::io::ImporterNVM<OpenMeshType>::ReadHeader(FILE*&)

in vcglib/wrap/io_trimesh/import_out.h:91 and /vcglib/wrap/io_trimesh/import_nvm.h:91
System: ArchLinux (gcc-7.3)
Quick solution, for me, was to remove ReadHeader(const char * filename,unsigned int &num_cams, unsigned int &num_points) fuction entirely or add tmp variable to handle proper invocation of ReadHeader(fp,num_cams,num_points)