Free-hand drawing : a manual for teachers and students (1898)
Cross, Anson K. (Anson Kent), 1862-1944 · Boston : Ginn & Company · leaf 103
s more distorted than the ellipse. If the eye is placed 1 The.se letters are often used to designate the centre of vision, or the pointon the picture exactly opposite the eye of the spectator. At this point all linesperpendicular to the picture plane vanish. SCIENTIFIC PERSPECTIVE AND MODEL… … Fig. 20. Perspective of a Sphere and Cube. ellipse will appear a circle, and the representation of the cubewill cause the same image in the eye that the cube does. Figs. 18and 20 are distorted because they are made on a vertical pictureplane through which the visual rays pass obliquely. Fig. 21 is…
Drawing
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