Tyrwhitt, R. St. John (Richard St. John), 1827-1895, Macdonald, A. (Alexander), 1839-1921 · Oxford, The Clarendon press · leaf 362
s with PP, and two parallel to it. Thevanishing point of the former will be found by supposinga line to proceed from E in the same direction as AB andCD, i. c. at right angles to the picture-plane. But the pointat which this line EC meets the picture-plane is the centreof vision : consequently the… … Fig. 5. they have no vanishing point in the picture. Their repre-sentative lines on the picture-plane do not tend to meetin any point, and they are parallel to each other, as in thefigure. Hence two rules, which will be referred to again insumming up:—i. That the perspectives of lines which…
Painting -- Study and teaching · Perspective
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