Art culture: a hand-book of art technicalities and criticisms (1873)
Ruskin, John, 1819-1900, Platt, W. H. (William Henry), 1821-1898 · New York : Wiley · leaf 258
ere is no other term which would not cause confusion. Lastly, in order to complete our knowledge of theposition of an ol)ject, the vertical height of sonie point init, above or below the eye, must be given ; that is to say,either d p or d q in Fig. 2.*: this I shall call the vertical * P and Q… … Fig. 3. 218 PEESPECTIVE. distance of the point given. In all perspective prob-lems these three distances and the dimensions of theobject, must be stated, otherwise the problem is imper-fectly given. It ought not to be required of ns merelyto draw a room or a church in perspective; but to drawthis…
Art · Aesthetics
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