Journal of Graphic Science of Japan
Online ISSN : 1884-6106
Print ISSN : 0387-5512
ISSN-L : 0387-5512
On the vanishing point of sun-ray
Hiroshi Ueda
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1985 Volume 19 Issue 1 Pages 7-10

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Abstract
In order to express solidity we draw shade and shadow on a perspective drawing. But the vanishing point of sun-ray was often decided in an experimental way. Then we studied the method to draw shade and shadow according to angle of sun-ray. As the result of study, we found that not only the sun path diagram of any place but also the vanishing point of sun-ray could be drawn by simple geometrical operation.
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