setLighting([ ambientIntensity, diffuseIntensity, specularIntensity, shininess ])

Sets Phong lighting mode.

This method adjusts the brightness of the surfaces as according to the Phong lighting model, in which the light source is from the viewer direction and is far away.

For a cone or funnel chart, this is the default coloring method.

For a pyramid chart, only ambient and diffuse reflections are used.

Argument	Default	Description
ambientIntensity	0.5	The ambient reflection coefficient of the Phong lighting model.
diffuseIntensity	0.5	The diffuse reflection coefficient of the Phong lighting model.
specularIntensity	1	The specular reflection coefficient of the Phong lighting model.
shininess	8	The shininess coefficient of the Phong lighting model.

None