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glNormal

Chapter 12

301

Description

The current normal is set to the given coordinates whenever glNormal is issued. Byte,

short, or integer arguments are converted to ﬂoating-point format with 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 with glNormal need not have unit length. If normalization is enabled,

then normals speciﬁed with glNormal are normalized after transformation. To enable

and disable normalization, call glEnable and glDisable with the argument

GL_NORMALIZE. Normalization is initially disabled.

Notes

The current normal can be updated at any time. In particular, glNormal can be called

between a call to glBegin and the corresponding call to glEnd.

Associated Gets

glGet with argument GL_CURRENT_NORMAL

glIsEnabled with argument GL_NORMALIZE

HP b2600 Reference Guide

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