Vision Science
Also known as "The Essence of Vision", a treatise on the principles of geometry written by Xi Yao in the Qing Dynasty on linear perspective. It is the earliest monograph in the Qing Dynasty to systematically expound the theory of graphology, and it is also the first work on the geometry of painting in China. This edition is the B-卯 edition, which is a supplement to the thirteenth year of Qing Yongzheng.
"Vision" is illustrated and illustrates the principle of perspective. The basic topics in perspective are introduced, including the measurement point method and intercept method in terms of techniques, parallel perspective and angled perspective in perspective angle, upward perspective in terms of horizon position, and the treatment of the shadow of the central light source on axonometric maps. In terms of legend, Nian's two-dimensional graphics for general three-dimensional graphics represent the size and shape, and then make a sub-perspective view of the bottom surface to determine the height of each feature point, and finally draw the overall perspective. Some of the terms used in the book are still used today, such as "horizon", "horizon" and so on.
"Vision" is unprecedented in China; it is also a representative work of early drawing geometry in the world, 70 years before the Famous Book of Painting Geometry by the French mathematician Monge.
(1671 ~ 1738), a native of Huaiyuan County, Anhui, the character Yungong, a famous Yungong, the character Xiyao, the owner of the trumpet, the first han army with a white flag, Yongzheng in the first year of the Han army with a yellow flag. His works include three volumes of "Measuring Dao Gui", one volume of "Overview of The Proportions of The Face", and one volume of "Logarithmic Guangyun".
