Custom parts

[mariohobbs]

Howdy, I'm working on a custom parts pack that'll add some geometric shapes for building: (ex: equilatoral triangle, right triangle, archway, semi-circle, trapezoid, circle, ring, etc...) but i want to add some functionality yet i do not know how; I want to make it like a fuel tank where you can change the texture and shape texture, I'd like to be able to change some values (like changing the base, height, or angle of a triangle; Changing the width of an object, changing how thick a ring is; that sort of thing). And maybe choose whether or not something is a fuel tank and what kind of fuel it'll use. Thanks in advance;

-mariohobbs