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 28
struct the perspectives, which shovvthose objects as they appear, 42. These auxifiary drawings, which show the given object, and its visual rays, as they reallyare, in respect to form andrelative position, are calledprojections. To the expla-nation and construction ofprojections, we thereforeturn,… … Fig. 3. The floor and any wall of a room, would be such a horizontal and THE ELEMENTS OF PROJECTIONS. 19 vertical plane. HV, the intersection of these planes, is called theground line. Next, let P be any point in the open angular space between thesetwo planes. Then let Pjt? be a straight line from…
Perspective · Mechanical drawing
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