Perspective Practices, ContinuedReflectionsshadows, andshade inperspectiveSHADOW: Shadows in perspective necessitate your determining the positionof a light source and a vanishing point for the shadow. Establish a lightsource either on or off your drawing paper. This is a simulated position anddirection that indicates the location of a real light such as the sun or a lightbulb. Locate a vanishing point for the shadow vertically below the lightsource on the horizon. Draw visual rays from the simulated light source tothe corners of the object. Extend the rays to the plane on which the objectrests. Draw lines from the vanishing point of the shadow to intersect thevisual rays from the light source along the ground line. The shadows willfollow the contour of the plane or object on which they fall.Figure 5-27 shows the location of a light source, shadow vanishing point, andshadows in perspective.Figure 5-27.—Shadows in perspective.Continued on next page5-35
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