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 66
e found as in the previous problems. Example 10.—To find the Perspective of a Cone, Tvhoseaxis is oblique to both planes of projection. For further variety, the perspective plane is here taken (Fig. 31)as a third plane, PLP, perpendicular to the two principal planes of 56 LINEAR PERSPECTIVE.… … L P* P Fig. 31. Let GL be the principal ground line, and VA and YA the pro-jections of the axis of the cone. This axis being oblique to bothplanes of projection, the base which is perpendicular to it, is obliqueto them both, also, and hence Avill appear as an ellipse, in both ofthe required…
Perspective · Mechanical drawing
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