I have seen people are creating various shapes using math nodes in Blender. Not just simple shapes but very complex shapes for example like a batman logo. I have learned that they extract algebraic equation (for example y- mx + c =0) of the shape and then implement the equation using nodes in Blender.
Now my problem is I don't know how to extract equations from a shape. Forget about complex shapes, I even don't know for simple shapes. Can you please help me specifying what math topics I have to learn to achieve this. And how will I achieve these result?