creating an object using javascript

I want to create an object within given points on the plane. I want to know if this is possible using javascript....example i gave certain points that form a surface of a sphere, however, the object does not look like a sphere because the inside is hollow...to make it more visible, I want to create an object inside the sphere..... Note: The object I created is not a sphere...I just site a more understandable example thank you....