Perspective, a series of elementary lectures (1899)
Cone, Ada · New York, W.T. Comstock · leaf 25
19 PEKSPECTIVE. line indicating the lower edge of tins plane is usually drawn through the lower line or angle of the nearest object. This line is called the Ground Line and is used for horizontal measures. All proportions and all distances, however remote, can be measured in this plane. The… … There is still another imaginary plane, called the Picture Plane. It represents the surface on which the drawing is supposed to be made, and its position marks the foreground limits of the picture. The Pict¬ ure Plane and Plane of Measures are parallel and may coincide or not. In the diagrams here…
Perspective · Drawing
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
