Complete perspective course : comprising the elementary and advanced stages of perspective, the projection of shadows and reflections, with exercises in theory and practice, also the practical application of perspective (1900)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan and co. · leaf 88
angle of 40* with theP.P. on the right, one side of it must form an angle of 50 with Ill PERSPECTIVE FOR SCIENCE AND ART STUDENTS 65 it on the left. Set off these angles with dl at s by lines meetingthe H.L. iu the points v.p. and v.p.: these are half-vanishingpoints. To determine the true… … Xh V.P ^ - FiR. 55 radii, describe arcs meeting the H.L. in the points m.p. and m.2).. Double the distances of these points from C.Y. on the H.L., and obtain ]\LP. and M.P.. These are the true measuring points / This method of obtaining tlie working points is very con- \ venient, especially when…
Perspective
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