3d graphics renderer math

I need assistance with completing 3D graphics render code for data plots written in C++. The code takes a list of 3D primitives, lines, spheres, text, etc, and displays these as 3D objects. The code works;... (Budget: $30 - $250 USD, Jobs: 3D Modelling, 3D Rendering, 3D Visualization, Computer Graphics, Graphics Programming, Mathematics)