I want to render a mesh made up of tetrahedron in OpenGL because I am trying to implement animation which requires the use of the 'finite element method'. As a novice of OpenGL, I am not quite sure how to approach this.
So far, I have come across NETGEN which is supposed to generate a tetrahedral mesh from an object. From the example I downloaded, it takes a .geo file for input and outputs a .vol file.
The .vol file has a lot of data points and variables listed inside. Is this a standard file to read in? Or is it proprietary depending on which software generates it? In other words, are there standard methods for rendering this kind of file or do I need to manually parse the data from the file and then somehow render it as GL_LINES, etc?