Vincent Van Gogh is a major one. Check out his works. If you want a really popular painting of his, check out "Starry Night" Many impressionists did their work this way, so it is often called impressionist art. Claud Monet, Charles Angrand, Pierre-Auguste Renoir, and many many more. Just look up impressionist artists. :) Hope this helped!
There are two types of shapes: geometric and free-form Our bodies take up space as do all shapes and forms that are freestanding are surrounded by negative space whereas relief sculpture projects into negative space.