Elementary linear perspective of form and shadow ... Complete in itself ... For draftsmen, artists, and industrial drawing courses in preparatory and high schools, etc. In two parts.. (1891)
Warren, S. Edward (Samuel Edward), 1831-1909 · New York, J. Wiley & sons · leaf 76
t B. But the point, asA, ill which a line meets asurface, is a point of the sha-dow of that line on that sur-face. Hence AR is the sha-dow of AB on the horizontalplane GH. But BA beingvertical, AR is also the hori-zontal projection of the rayBR. Hence, the shadow of a vertical line on the… … G<; Fig. 35. PERSPECTIVES OF SHADOWS. 67 dow of such a line upon the vertical plane, will be in the directionof the vertical projection of the rays of light. 98. Since the rays of light are parallel, it is clear that the shadowof a vertical line on the vertical plane^ will^ itself he a…
Perspective · Mechanical drawing
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