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GLNORMAL(3G)							  GLNORMAL(3G)

NAME
       glNormal3b,  glNormal3d,	 glNormal3f,  glNormal3i,  glNormal3s,	glNor‐
       mal3bv, 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 nor‐
		 mal.  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 current 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	 inte‐
       ger  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 mod‐
       elview matrix.  GL_RESCALE_NORMAL requires that the  originally	speci‐
       fied normals were of unit length, and that the modelview matrix contain
       only uniform scales for proper results.	To enable and disable  normal‐
       ization,	 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)
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