Default lighting:
Default lighting when
ColorFunction is specified:
No lighting means diffuse or specular colors will not be visible:
Using
Glow specifies pure color without interaction with lights:
Ambient light is uniformly applied to all the surfaces in the scene:
Ambient light gives overall lighting on the scene:
Directional light is specified by a color and a vector defined by two points:
Directional lights with different colors:
Directional lights with different directions:
Directional lights on a specular surface:
Specify a spherical point light source by a color and a position:
Point lights with different colors:
Point lights at various positions:
Point lights on specular surfaces:
Specify spotlight by position, target position, and half-angle:
Spotlights with different colors:
Spotlights from different positions:
Spotlights with different half-angles:
Spotlights on specular surfaces:
Specify the light source position in the graphics coordinate system by default:
The light source moves with the graphic when the view point changes:
Specify the light position by a fraction of the graphics coordinates using
Scaled:
The light source moves with the graphic when the view point changes:
Specify the light position in the view coordinate system using
ImageScaled:
The light source position is always fixed relative to the view point:
By default, point lights are not affected by the distance from an object:
Specify a point light that attenuates with respect to the distance:
Specify a point light that attenuates by the square of the distance:
By default, spotlights fall off sharply outside the cone:
Spotlights with different spot exponent
has intensity
:
Spotlight without attenuation:
Spotlight with linear attenuation:
Spotlight with quadratic attenuation:
to 
}
, the 
and 
run from 0 to 1 across the width and height of the bounding box of the final displayed image. The 
coordinate runs orthogonal to the plane of the display, and is 0 at the back of the 3D region, and 1 at the front. 
. »
defines lighting for objects that follow the lighting specification in the list. »
are taken to yield parallel simulated light rays, so only the direction vector defined by 
is relevant, not its magnitude. »
effectively yield light that emanates from the point pt but does not attenuate with distance. »
yields light that attenuates like 
with distance 
. »
yields the same light distribution as a point light source, except that it is restricted to a cone with direction from pt to tar, and with half-angle 
in radians. »
gives 
fall-off away from the center of the cone. »
gives 
attenuation with distance 
. »
EXAMPLES
Basic Examples 
Scope 