Using QT and VS run CGAL5.2's official examples

Question

I downloaded the official example which is CGAL-5.2\examples\Triangulation_2 from the website CGAL.org. I successfully cmake the examples. Then I opened Triangulation_2_Examples.sln from G:\MyCGAL_code\code_1\Triangulation_2\build by VS2017. I also successfully built all projects (without errors). I then click the debugger in VS: the draw triangulation.exe running fine, but the Triangulation_2 Basic_viewer is empty. I knew someone's successful results has colored triangles in the window called Triangulation_2 Basic_viewer. Did anyone try this official example before?

Answer 1

The program draw_triangulation_2 takes a filename as input (the file must contains a set of 2D points).

Without parameter, it takes data/triangulation_prog1.cin by default.

Thus the working directory must contains a directory data and this directory must contains a file triangulation_prog1.cin. Otherwise, the triangulation is empty.

To solve your problem, you need either to create the data directory and copy triangulation_prog1.cin in this directory; or give a valid filename as parameter.