XGraphicsglNormal3d(Double, Double, Double) Method

Parameters

nx  Double

Specifies the x-coordinate for the new current normal vector.

ny  Double

Specifies the y-coordinate for the new current normal vector.

nz  Double

Specifies the z-coordinate for the new current normal vector.

Return Value

This function does not return a value.

The current normal is set to the given coordinates whenever you call the glNormal3dfunction Byte, short, or integer arguments are converted to floating-point format by using a linear mapping that maps the most positive representable integer value to 1.0, and the most negative representable integer value to 1.0. Normals specified by usingglNormal3d need not have unit length. If normalization is enabled, then normals specified with glNormal3d are normalized after transformation. You can control normalization by using glEnable and glDisable with the argument GL_NORMALIZE. By default, normalization is disabled. You can update the current normal at any time. In particular, you can callglNormal3dbetween a call to glBegin and the corresponding call to glEnd. The following functions retrieve information related to glNormal3d;