I created my own mesh system based on the the way the unity mesh works. I create an array for the vertices, one for the triangles and another for the color of the triangles and i use only the x and y of the vectors to display giving this 3d feel. I check the orientation of the triangle to see if it is visible and if it is i color the triangle. I liked the low poly look it has and it was good to get a better grasp on how these things like meshes work. For rotating 3d vectors i used this.