CGAL users discussion list

[sergio <>]

This is may application that i compile in windows in Release with the showed 
CMakeList.txt and cgal_vtk_test.cpp files. When I try to repair this file: 

Number intersection: 290
https://drive.google.com/file/d/1uqcbZqgtbiiXYjKnzzb5d-OXm4JAHqdx/view?usp=sharing

1. my application build in Release generate the following file:

Number intersections: 179
Add some visible holes and some deformations.
Repairing time:..................201.128 seconds. 

https://drive.google.com/file/d/13Vfw0pP5Ymw0oo4RnfRjKTI_aTndb6P4/view?usp=sharing


2. my application compiled in Debug, it generate the following file:

Number intersections: 4
Repairing time:..................1072.96 seconds.

https://drive.google.com/file/d/1x1Z7qaNcnfGC8a24qzJI-DZEF3qqeLqq/view?usp=sharing


with warnings:

Expression : !"Returning no output. Filling hole with extra triangles is not
successful!"
File       :
C:\dev\CGAL-4.12\include\CGAL/Polygon_mesh_processing/internal/Hole_filling/Triangulate_hole_polyline.h
Line       : 1103
Explanation:
Refer to the bug-reporting instructions at
https://www.cgal.org/bug_report.html

The problem is that in debug build it takes around 17 min for reparacion and
in Release it  only takes 3 minutes.

What's wrong?





-------------------------------------------------------------------------------
CMakeList.txt
-------------------------------------------------------------------------------

cmake_minimum_required(VERSION 2.8.4)

project( cgal_vtk_test )

# Find CGAL
find_package(CGAL REQUIRED COMPONENTS Core) # If the dependency is required,
use REQUIRED option - if it's not found CMake will issue an error
include( ${CGAL_USE_FILE} )

# Find VTK
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})


# Setup your executable
#include_directories (BEFORE "include")

include( CGAL_CreateSingleSourceCGALProgram )
create_single_source_cgal_program( "cgal_vtk_test.cpp" ) # This will create
an executable target with name 'cgal_vtk_test'

# Add VTK link libraries to your executable target
target_link_libraries(cgal_vtk_test ${VTK_LIBRARIES})
#target_link_libraries(cgal_vtk_test)

-------------------------------------------------------------------------------
cgal_vtk_test.cpp
-------------------------------------------------------------------------------

#include <fstream>
#include <iomanip>
#include <ctime>

//
----------------------------------------------------------------------------
// CGAL
// ----------------------------------------------------------------------



#include <limits>

#include <CGAL/Polygon_mesh_processing/repair.h>
#include <CGAL/Polygon_mesh_processing/internal/repair_extra.h>
#include <CGAL/Polygon_mesh_processing/corefinement.h>


#include <CGAL/Polygon_mesh_processing/polygon_soup_to_polygon_mesh.h>
#include <CGAL/Polyhedron_3.h>
#include <CGAL/Surface_mesh/Surface_mesh.h>
#include <CGAL/Polygon_mesh_processing/corefinement.h>
#include <CGAL/IO/print_wavefront.h>
#include <CGAL/IO/OBJ_reader.h>
#include <CGAL/IO/print_wavefront.h>
#include <CGAL/assertions.h>

#include <CGAL/IO/STL_reader.h>
#include <CGAL/IO/STL_writer.h>


typedef CGAL::Exact_predicates_inexact_constructions_kernel Kernel;
typedef CGAL::Surface_mesh<Kernel::Point_3>             Mesh;
typedef CGAL::Polyhedron_3<Kernel> Polyhedron;

void addStringToFileName(std::string  & fileName, const std::string & str)
{
        size_t lastindex = fileName.find_last_of(".");
        std::string name = fileName.substr(0, lastindex);

        fileName = name + str;
}

bool repairOBJFile(std::string & fileName)
{
        clock_t begin = clock();

        std::cout << std::endl;
        std::cout << std::endl;

        std::cout << 
"..........................................................."
<< std::endl;
        std::cout << ".                        Repairing                      
 ."
<< std::endl;
        std::cout << 
"..........................................................."
<< std::endl;

        std::ifstream input(fileName);
        if (!input)
        {
                std::cerr << "Cannot open file " << std::endl;
                return false;
        }

        std::vector<Kernel::Point_3> points;
        std::vector< std::vector<std::size_t> > polygons;
        if (!CGAL::read_OBJ(input, points, polygons))
        {
                std::cerr << "Error parsing the OFF file " << std::endl;
                return false;
        }
        //Mesh mesh;
        Polyhedron mesh;
        CGAL::Polygon_mesh_processing::orient_polygon_soup(points, polygons);
        CGAL::Polygon_mesh_processing::polygon_soup_to_polygon_mesh(points,
polygons, mesh);

        bool solved =
CGAL::Polygon_mesh_processing::remove_self_intersections(mesh);

        if (!solved)
        {
                std::cout << "Some self-intersection could not be fixed" << 
std::endl;
                //return false;
        }

        addStringToFileName(fileName, "_fixed.obj");
        std::ofstream ofs(fileName);
        CGAL::print_polyhedron_wavefront(ofs, mesh);

        clock_t end = clock();
        double elapsed_secs = double(end - begin) / CLOCKS_PER_SEC;

        std::cout << std::endl;
        std::cout << std::endl;

        std::cout << "Repairing time:.................." << elapsed_secs << "
seconds."<< std::endl;

        return true;
}
 
int main(int argc, char* argv[])
{
        std::string fileName = argv[1];
        repairOBJFile(fileName);
        return 0;
}




--
Sent from: http://cgal-discuss.949826.n4.nabble.com/