Is there are any way to hallucinate , to hallucinate what I want to (Eg: a circle ) ?

And now I'm not talking about inducing a hallucination by using one of those fancy powders(if you catch my meaning). I talk about "seeing your imagination" I guess?
I wonder if its possible to develop such skill with the use of meditation and any other mental exercise?

I could use this in drawing; so if I wanted to draw something out of my imagination I could just "project" the thing's structure to the paper I'M looking at, and just proceed to follow the lines...

It's a pretty nutty idea but eh...