Make Kirill's Mesher work in Linux

[raquelalegre]

At the moment it only works in Windows. It also needs some refactoring.

[raquelalegre]

I made the latest Mesher_plus_Rat.cpp work in your Unix workstation with CGAL 4.2 and CMake, except for the Matlab stuff that @sinanshi will configure.

In order to make this work, I had to:

1. Install CGAL latest available version:

   sudo apt-add-repository "deb http://archive.ubuntu.com/ubuntu/ trusty main restricted universe"
   sudo apt-get update
   sudo apt-get install -y libcgal-dev libcgal-demo
   

2. Clone the Mesher repo to my workspace directory in your Linux workstation:

   ssh raquel@128.40.160.112
   cd ~raquel/work
   git clone git@github.com:EIT-team/Mesher.git
   

3. Change the contents of Mesher_plus_Rat.cpp like this:

   • Point or was named using a reserved word which made g++ complain, so I renamed it to origin.
   • Includes that refer to headers in current folder need to change from include <input_parameters.h> to include "input_parameters.h" for the build to look for them in the right place.
   • Comment out the call to save_matlab since the CMake config files need to be modified in order to find the necessary matlab libs.

4. Configure the CMake stuff linking properly CGAL's ImageIO and build executable:

   cd Mesher
   cgal_create_CMakeLists -c ImageIO
   cmake .
   make
   

5. Run:

   ./Mesher_plus_Rat
   

This is the output I got:

 Reading the input file:
-facet angle = 30
-faced distance= 0.2
-cell radius edge ratio = 3
-cell fine size = 1
-cell coarse size = 3
-preserve elements with fine size (perc. from the border)= 1%

-electrode radius = 0.3
-mesh size near the electrode = 0.1
-make lloyd = 0
-make odt = 0
-make exude = 0
-make perturb = 0
-time limit = 180
Error opening electrode file: No such file or directory
 Reading the Image file...
 Meshing with initial mesh...
 Optimising:
 Saving the mesh into matlab file...
 ALL DONE, press any key! :)

There's a smiley face, so I think it went well.