I know that there are 3 techniques to draw 3D objects:(1) Wireframe Modeling and rendering(2) Additive Modeling(3) Subtractive ModelingAm I correct?What formula or algorithm can I use to draw a 3D Sphere?I am using a low-level library named WinBGIm from colorado university.For example, how to draw this:And, this:
What formula or algorithm can I use to draw a 3D Sphere without using OpenGL?
3d;geometry