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 105
s left as an exercise. Example 7«.—To find Shadows on Side Walls. Let ab, Fig, 51a, a vertical, and ac, an oblique rod, meet thefloor, one at h, the other at c. GL being the ground line ; EH,the horizon ; E, the point of sight; and N V and H, the van-ishing points ofrays, and of theirhorizontal… … Fig. 51a. jSTow : of a vertical EV, perpendicular to GL, for its vanishing lino. First. JH is the perspective horizontal traceplane of rays containing ab ; then rt, parallel to ab, is the per-spective trace of this plane on MNOP. Hence the ray «V, lim-iting rt at e, gives br, the shadow of ab on…
Perspective · Mechanical drawing
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