Freehand perspective and sketching; principles and methods of expression in the pictorial representation of common objects, interiors, buildings and landscapes (1916)
Norton, Dora Miriam · Brooklyn : The author · leaf 166
Fig. 230 SHADOWS … light-rays are receding slightly, hence must appear to convergea little, like any parallel receding lines. Therefore to draw them,we first find their vanishing point. Imagine one of these rays(as D-^, Fig, 227) dropped vertically to the floor of the box (asthe gable edge in Ch. XXII was dropped).…
Drawing · Perspective
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