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SHADOW FROM POINT

Lecture



SHADOW FROM POINT

The shadow from point A on any surface P is the intersection point of the light beam S passing through this point with the surface P.

SHADOW FROM POINT

SHADOW FROM POINT ON PROJECTION PLANE

The shadow from point A on the plane of projections is the trace on this plane of the light beam S passing through point A ( A t - shadow from point A on the plane of projections; And t 1 - the horizontal projection of the shadow of the point A ; And m 2 - frontal projection of the shadow of point A ).

SHADOW FROM POINT

Shadowing point A on the projection plane using the model.

SHADOW FROM POINT

SHADOW FROM POINT

SHADOW FROM POINT

SHADOW FROM POINT

SHADOW FROM POINT

SHADOW FROM POINT

The shadows from the points on the upper field P 2 and on the front field P 1 are called real shadows ( А Т , В Т ). The shadows from the points on the bottom field P 2 and on the back field P 1 are called imaginary ( false ) shadows ( A ' T , B' T ).


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Descriptive Geometry and Engineering Graphics

Terms: Descriptive Geometry and Engineering Graphics