lighting
Specify lighting algorithm
Syntax
lighting flat
lighting gouraud
lighting none
lighting(ax,...)
Description
lighting selects the algorithm used to calculate the effects of
light objects on all surface and patch objects in the current axes. In
order for the lighting command to have any effects, however, you
must create a lighting object by using the light or lightangle function.
lighting flat produces
uniform lighting across each of the faces of the object. Select this
method to view faceted objects.
lighting gouraud calculates
the vertex normals and interpolates linearly across the faces. Select
this method to view curved surfaces.
lighting none turns off
lighting.
lighting(ax,...) uses the axes specified by ax
instead of the current axes.
Examples
Compare Lighting Algorithms
Create a sphere. There is no light by default, which is the same as having a light and setting the algorithm to none.
sphere
axis equal
Call the lightangle function to create a light at an azimuth angle of -45 degrees and an elevation angle of 30 degrees. When you create the light, the default lighting algorithm is flat.
lightangle(gca,-45,30)
Change the lighting algorithm to gouraud.
lighting gouraud
Tips
The surf, mesh, pcolor, fill, fill3, surface, and patch functions create graphics objects that are affected by light
sources. The lighting command sets the FaceLighting and
EdgeLighting
properties of surfaces and patches appropriately for the graphics object.