Shades and shadows, with applications to architectural details, and exercises in drawing them with the brush and pen .. (1912)
Ware, William R. (William Robert), 1832-1915 · Scranton, International Textbook Company · leaf 23
lf in shade, and the two halves are separated by pointsof Light and Shade, at which the rays of light are tangent to the perimeter. If now a solid object is cut by a planeparallel to the light, the surface of intersection may be regarded as an infinitely thin slice, constituting a planefigure… … Fig. N2 Fig. N 1 shows a Surface of Revolution cut by three planes parallel to the light, the tangent rays making theangle (P with the honzontal plane, and their projections making 45 degrees with both planes of projection Thisgives SIX pomts of the Line of Shade, 1,1.; 2,2^; and 3,3^; two for each…
Shades and shadows
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