Imitative art;, or, The means of representing the pictorial appearances of objects, as governed by aerial and linear perspective: : being a manual of details, for the amateur sketcher and the man of business, with a chapter on finish. (1840)
Howard, Frank, 1805-1866, Darton & Clark, publisher, J. Green and Co., printer · London : Darton and Clark, Holborn Hill. · leaf 65
51 CAST SHADOWS. the degrees of curvature of the line of shadow. The more acute the angle, the more decided or sudden will be the curve. If the surface upon which the shadow is thrown be angular or compounded of curves, the shape … of the shadow will be modified accordingly, as will be made more apparent in the future examples. It has been stated that in Imitative Art the light must be admitted from only one source, — that the cast shadows must be definite, as to boundaries, as though produced by light from one source, but…
Drawing · Perspective · Shades and shadows · Surfaces · Drapery in art · Projection
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
