Lecture
Building shadows in perspective projections is not fundamentally different from constructing shadows in orthogonal and axonometric projections, except that in the long run, in general, the light rays and their projections are directed to the vanishing points of the rays F S and their projections F S 1 .
The vanishing point of the horizontal projections of light rays is always located on the horizon line LG (as a vanishing point of straight lines located in the object plane).
The vanishing points of light rays and their horizontal projections lie on the same perpendicular to the horizon line.
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Descriptive Geometry and Engineering Graphics
Terms: Descriptive Geometry and Engineering Graphics