[Peter]

DSF, thanks for the interesting excursions! Applying your "slide rule" is quite possible to determine the type of product on tsvetoforme.No such "lines" need a few more to measurement had a range tochnym.Naprimer deformation shape until the complete its expansion (impressionism rejected the local color and encroached on the holy syatyh painting-on form), and negation, and thus you can get close to pure abstraction, but even then we still stalknemsya with the only form on which you can not get away with a form-canvas the written product.

Added after 32 minutes
Abstract component has always been in any work of art as a product of the activity of consciousness hudozhnika.Interesno trace the small difference is the formal side of painting to what we now mean by clean, or "unconsciously" abstraction, although I personally support the idea that the "unconscious" all- being done deliberately.