NAME    [Toc]    [Back]

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

SYNOPSIS    [Toc]    [Back]

       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    [Toc]    [Back]

       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).

SYNOPSIS    [Toc]    [Back]

       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    [Toc]    [Back]

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

DESCRIPTION    [Toc]    [Back]

       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    [Toc]    [Back]

       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    [Toc]    [Back]

       glGet() with argument GL_CURRENT_NORMAL
       glIsEnabled() with argument GL_NORMALIZE
       glIsEnabled() with argument GL_RESCALE_NORMAL

SEE ALSO    [Toc]    [Back]

       glBegin(3),  glColor(3),  glIndex(3),  glNormalPointer(3),
       glTexCoord(3), glVertex(3)



                                                     glNormal(3G)