Science and art drawing : complete geometrical course ; consisting of plane and solid geometry, orthographic and isometric projection, projection of shadow's the principles of map projection, graphic arithmetic and graphic statics (1895)
Spanton, J. Humphrey (John Humphrey) · London : Macmillan · leaf 478
roughc in d. Draw the projector dd, and join dc, which is the eleva-tion of the line required. Through c draw ef perpendicular to cd. If the ray of lightwere parallel to the V.P., then ef would be the elevation of the PROJECTION OF SHADOWS 457 circle forming the line of separation on the sphere, in… … it meets Cc produced in A. Draw the projector lih\ and draw aline from li through d till it meets horizontal lines drawn frome and/ in the points % and /. Draw projectors from i! and jtill they meet CA in % and/ Through c draw hi perpendicularto ij. Draw projectors from h and I till they meet a…
Geometrical drawing
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