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 21
jections 1,2,3,and .4 thus give eight points of the Line of Shade, at a, a; h,V; c,c!; and d,d, respectively. These eight points can all be found in Fig. L, 1, b and bbeing on the corners of the equator, or largest horizontalcircle; c and c being on the axis, at the same height as a anda; and d and… … Fig. M 3 Fig. M 1 Fig. M 2 II. The Method of Revolved Tangent Rays.—If, when the light is taken as parallel to the Vertical Plane ofProjection, a tangent ray is drawn at any point of the Line of Shade, as at I, Fig. M 1, and the surface isrevolved about its axis until the point of tangency comes…
Shades and shadows
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