Simplified mechanical perspective for the use of ... schools (1909)
Frederick, Frank Forrest, 1866-1942 · Peoria, Ill., The Manual arts press · leaf 15
lane. Its position may befound, however, by projecting, by line 1-2, Fig. 3, its distance above thehorizontal plane to the picture plane, and then revolving it (with pointR as center) to coincide with the horizontal plane. It is then seen asin Fig. 4. This revolution of the horizon (H) from its…
Perspective
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