Applied perspective, for architects and painters (1901)
Longfellow, William Pitt Preble, 1836-1913 · Boston and New York, Houghton, Mifflin and company · leaf 120
re points 8 and 8 (Fig. 97), so that if 8 isneeded, S must be found first; but this is verysimply done. The middle point 0 of VV>,centre of the semicircumference VS V, is ver-tically over 0, the middle point of VV. An arcdescribed from o as a centre with a radius 0 Vwill by its intersection with… … CIRCLES IN OBLIQUE PLANES Fig. 98 shows the construction in an oblique plane whose horizon is HH, C beingthe sub-centre. D is a distance point, and CD = CS the length of the Axis : the tri-angle CCS, right-angled at C, gives the sub-distance points Z>, and the diagonal abof the square, vanishing…
Perspective
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