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GLNORMAL(3G)                                                                                    GLNORMAL(3G)



NAME
       glNormal3b,  glNormal3d,  glNormal3f,  glNormal3i, glNormal3s, glNormal3bv, glNormal3dv, glNormal3fv,
       glNormal3iv, glNormal3sv - set the current normal vector


C SPECIFICATION
       void glNormal3b( GLbyte nx,
                        GLbyte ny,
                        GLbyte nz )
       void glNormal3d( GLdouble nx,
                        GLdouble ny,
                        GLdouble nz )
       void glNormal3f( GLfloat nx,
                        GLfloat ny,
                        GLfloat nz )
       void glNormal3i( GLint nx,
                        GLint ny,
                        GLint nz )
       void glNormal3s( GLshort nx,
                        GLshort ny,
                        GLshort nz )


PARAMETERS
       nx, ny, nz
                 Specify the x, y, and z coordinates of the new current normal.  The initial  value  of  the
                 current normal is the unit vector, (0, 0, 1).


C SPECIFICATION
       void glNormal3bv( const GLbyte *v )
       void glNormal3dv( const GLdouble *v )
       void glNormal3fv( const GLfloat *v )
       void glNormal3iv( const GLint *v )
       void glNormal3sv( const GLshort *v )


PARAMETERS
       v      Specifies a pointer to an array of three elements: the x, y, and z coordinates of the new cur-rent current
              rent normal.


DESCRIPTION
       The current normal is set to the given coordinates whenever glNormal  is  issued.   Byte,  short,  or
       integer arguments are converted to floating-point
        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 GL_NORMALIZE is enabled, then  normals
       of  any  length specified with glNormal are normalized after transformation.  If GL_RESCALE_NORMAL is
       enabled, normals are scaled by a scaling factor derived from the modelview matrix.  GL_RESCALE_NORMAL
       requires  that  the  originally  specified normals were of unit length, and that the modelview matrix
       contain only uniform scales for proper results.  To enable and disable normalization,  call  glEnable
       and glDisable with either GL_NORMALIZE or GL_RESCALE_NORMAL.  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
       glIsEnabled with argument GL_RESCALE_NORMAL

SEE ALSO
       glBegin(3G), glColor(3G), glIndex(3G), glNormalPointer(3G), glTexCoord(3G), glVertex(3G)




                                                                                                GLNORMAL(3G)