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 39
s perpendicular to either plane of projection, its shadow upon that planelies at 45 degrees and is as long as the diagonal of the given line (Fig. 10 A and B). 19. In this figure the shadows of the extreme poinJ:s are found by twice laying off the distances of thepoints from the plane of… … THE SHADOWS OF RIGHT LINES 29 20. Principal Normal Lines.—A right line which is parallel to two of the principal planes of projection andperpendicular to the third, casts shadows upon the first two which are equal and parallel to itself and parallelto the Ground Line, i. e. to the line of…
Shades and shadows
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