平面桁架VB源程序，非常有学习价值的有限元代码，共享给大家-Plane truss VB source code, very valuable learning finite element code, and shared to everyone

Displays a rotatable and scaleable wire frame of any 3D mathematical function. This can be made up from the normal VB maths plus inverse and hyperbolic functions. Functions can be created and saved as wanted. Image vertices can also be saved