The perspective， created by western classical paintings， is the representation of threedimensional form on a canvas. However， the cubism that emerged among various art schools broke away from the conventions of perspectives， and reshaped the twodimensional art in the early 20th century.

畫布是一個平面，但西方古典繪畫卻發(fā)明了“透視法”，給人三維空間的錯覺。上世紀(jì)初，現(xiàn)代藝術(shù)流派紛起，其中的立體主義便是要打破透視法的傳統(tǒng)，重塑二維空間的視覺藝術(shù)。