MirOS Manual: glNormal(3), glNormal3b(3), glNormal3bv(3), glNormal3d(3), glNormal3dv(3), glNormal3f(3), glNormal3fv(3), glNormal3i(3), glNormal3iv(3), glNormal3s(3), glNormal3sv(3)


GLNORMAL(3G)        UNIX Programmer's Manual         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 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 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

MirOS BSD #10-current  Printed 03.04.2017                       1

GLNORMAL(3G)        UNIX Programmer's Manual         GLNORMAL(3G)

     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 particu-
     lar, 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)

MirOS BSD #10-current  Printed 03.04.2017                       2

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