I’ll do my best to keep this short and to the point, for my benefit and for yours 
I’m writing an application for Android that reads .GML files which contain model data for urban landscapes. It’s formatted much like an XML file and gives a list of coordinates for the vertices of each face that makes up a building.
So a simpler question that will lead me on my way is: given an array of 3D-coordinates, how do I render out the object without having an indice list? From a few tutorials I’ve taken, I understand that geometry is constructed from triangles, generally connecting vertices in a counterclockwise manner.
I’m not sure how to render a shape given just coordinates, and no indice list.
Thanks for the help!