Often while developing OpenGL applications from scratch, the model becomes invisible and it's hard to understand why. This application is aimed at solving this issue. It allows to manually set the model position and parameters of the perspective projection matrix. The resulting point in NDC is displayed as well as the preview.
Inspiration: create something like http://www.songho.ca/opengl/gl_transform.html, but for Linux
Dependencies: Qt5, GLUT
Build and run steps:
$ qmake$ make -j10$ ./why_is_my_model_invisible_opengl