User`s guide

Chapter 7 Working with Shapes
314
Working with Lights and Shadows
Light sources are points in three-dimensional space that emit light, causing objects (with
materials that can be affected by light) to appear illuminated. You can specify the location of
light sources relative to objects in the scene. You can also control the intensity, type, color,
and falloff of the applied light, and the position of the light source in 3D space.
Several shapes have their own specialized lighting controls:
• 3D Plane and 3D Sphere—see “Adding Lighting to 3D Plane Shapes” on page 319.
•3D Extrusion: see “Lighting in 3D Space” on page 325.
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3D Line Art does not provide lighting controls.
Lighting Tips
You can use the lighting controls together to accentuate the three-dimensional appearance of
an object and simulate the texture of the lit surface. The following examples show some of
the different ways to use Ambient, Diffuse, and Specular light to create dramatic lighting
effects.
Example 1: Glossy Surface
To create the appearance of a glossy surface, increase both the Specular light and Falloff to
create a small, intensely lit spot.
Example 2: Matte Surface
To create a surface that affects more matte, use only Diffuse light, and decrease Ambient
light to accentuate the three-dimensional appearance of the object.
Specular is set to 100 and
Falloff is set to 25.