Elementary perspective arranged to meet the requirements of architects, draughtmen, and students (1913)
Crosskey, Lewes R · London, Backie and son ltd · leaf 22
Suppose the P.P. to be rotated in the direction of the arrows into the G.P., itsintersection with the G.P- (viz. XjVi) remaining fixed. The point Xj would retain itsposition. The line H.L.u marks the new position of the line H.L.i, and the pointsC.V.ji Vii indicate the corresponding position of the… … Pig. 15. In fig. 15 the shaded upright plane, supposed to be made of cardboard, representsthe P.P. from the G.L. to the H.L XiVi is a line terminated by the two horizontal edges of the cardboard. If the cardboard is hinged along the lower edge X^Vj and rotated into the groundas in fig. 15, the…
Perspective
Internet Archive · Cornell University Library · Public Domain Mark 1.0. Free to use for anything.
