CGAL users discussion list

[pratihast22089 <>]

Hi ,

I am beginner and I am  trying learn CGAL from Manual.
When i try to run "examples/Surface_mesher/mesh_a_3d_gray_image.cpp", i just
change the data path :

//File: examples/Surface_mesher/mesh_a_3d_gray_image.cpp
#include <CGAL/Surface_mesh_default_triangulation_3.h>
#include <CGAL/Surface_mesh_default_criteria_3.h>
#include <CGAL/Complex_2_in_triangulation_3.h>
#include <CGAL/IO/Complex_2_in_triangulation_3_file_writer.h>
#include <fstream>
#include <CGAL/make_surface_mesh.h>
#include <CGAL/Gray_level_image_3.h>
#include <CGAL/Implicit_surface_3.h>

// default triangulation for Surface_mesher
typedef CGAL::Surface_mesh_default_triangulation_3 Tr;

// c2t3
typedef CGAL::Complex_2_in_triangulation_3<Tr> C2t3;

typedef Tr::Geom_traits GT;
typedef CGAL::Gray_level_image_3<GT::FT, GT::Point_3> Gray_level_image;
typedef CGAL::Implicit_surface_3<GT, Gray_level_image> Surface_3;

int main() {
  Tr tr;            // 3D-Delaunay triangulation
  C2t3 c2t3 (tr);   // 2D-complex in 3D-Delaunay triangulation

  // the 'function' is a 3D gray level image
  Gray_level_image image("D:/Cgalcode/ex1/data/skull_2.9.inr", 2.9);

  // Carefully choosen bounding sphere: the center must be inside the
  // surface defined by 'image' and the radius must be high enough so that
  // the sphere actually bounds the whole image.
  GT::Point_3 bounding_sphere_center(122., 102., 117.);
  GT::FT bounding_sphere_squared_radius = 200.*200.*2.;
  GT::Sphere_3 bounding_sphere(bounding_sphere_center,
                                   bounding_sphere_squared_radius);

  // definition of the surface, with 10^-5 as relative precision
  Surface_3 surface(image, bounding_sphere, 1e-5);

  // defining meshing criteria
  CGAL::Surface_mesh_default_criteria_3<Tr> criteria(30.,
                                                     5.,
                                                     5.);

  // meshing surface, with the "manifold without boundary" algorithm
  CGAL::make_surface_mesh(c2t3, surface, criteria, CGAL::Manifold_tag());
  std::ofstream out("D:/Cgalcode/ex1/data/out.off");
  CGAL::output_surface_facets_to_off (out, c2t3);
  std::cout << "Final number of points: " << tr.number_of_vertices() <<
"\n";
}

when i build inj visual c++ 2008 , it gives the following linking error:

Compiling...
stdafx.cpp
Compiling...
ex1.cpp
d:\cgalcode\ex1\ex1\ex1.cpp(30) : warning C4305: 'argument' : truncation
from 'double' to 'float'
Compiling manifest to resources...
Microsoft (R) Windows (R) Resource Compiler Version 6.1.6723.1
Copyright (C) Microsoft Corporation.  All rights reserved.

Linking...
CGAL_ImageIO-vc90-mt-gd.lib(all_files.obj) : error LNK2019: unresolved
external symbol 
__imp__glEnd@0
 referenced in function "public: void
__thiscall CGAL::Image_3::gl_draw(float,unsigned char,unsigned char,unsigned
char)" 
(?gl_draw@Image_3@CGAL@@QAEXMEEE@Z)
CGAL_ImageIO-vc90-mt-gd.lib(all_files.obj) : error LNK2019: unresolved
external symbol 
__imp__glVertex3d@24
 referenced in function "public: void
__thiscall CGAL::Image_3::gl_draw(float,unsigned char,unsigned char,unsigned
char)" 
(?gl_draw@Image_3@CGAL@@QAEXMEEE@Z)
CGAL_ImageIO-vc90-mt-gd.lib(all_files.obj) : error LNK2019: unresolved
external symbol 
__imp__glBegin@4
 referenced in function "public: void
__thiscall CGAL::Image_3::gl_draw(float,unsigned char,unsigned char,unsigned
char)" 
(?gl_draw@Image_3@CGAL@@QAEXMEEE@Z)
CGAL_ImageIO-vc90-mt-gd.lib(all_files.obj) : error LNK2019: unresolved
external symbol 
__imp__glColor3ub@12
 referenced in function "public: void
__thiscall CGAL::Image_3::gl_draw(float,unsigned char,unsigned char,unsigned
char)" 
(?gl_draw@Image_3@CGAL@@QAEXMEEE@Z)
CGAL_ImageIO-vc90-mt-gd.lib(all_files.obj) : error LNK2019: unresolved
external symbol 
__imp__glPointSize@4
 referenced in function "public: void
__thiscall CGAL::Image_3::gl_draw(float,unsigned char,unsigned char,unsigned
char)" 
(?gl_draw@Image_3@CGAL@@QAEXMEEE@Z)
CGAL_ImageIO-vc90-mt-gd.lib(all_files.obj) : error LNK2019: unresolved
external symbol 
__imp__glLineWidth@4
 referenced in function "public: void
__thiscall CGAL::Image_3::gl_draw_bbox(float,unsigned char,unsigned
char,unsigned char)" 
(?gl_draw_bbox@Image_3@CGAL@@QAEXMEEE@Z)
D:\Cgalcode\ex1\Debug\ex1.exe : fatal error LNK1120: 6 unresolved externals
 Results      Build log was saved at
"file://d:\Cgalcode\ex1\ex1\Debug\BuildLog.htm"
ex1 - 7 error(s), 1 warning(s)

Could you please help me in this situation?
Thank you in advance.

Regards,
Arun K Pratihast
ITC, Netherland
 
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