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GLROTATE(3G)                                                                                    GLROTATE(3G)



NAME
       glRotated, glRotatef - multiply the current matrix by a rotation matrix


C SPECIFICATION
       void glRotated( GLdouble angle,
                       GLdouble x,
                       GLdouble y,
                       GLdouble z )
       void glRotatef( GLfloat angle,
                       GLfloat x,
                       GLfloat y,
                       GLfloat z )


PARAMETERS
       angle  Specifies the angle of rotation, in degrees.

       x, y, z
              Specify the x, y, and z coordinates of a vector, respectively.

DESCRIPTION
       glRotate  produces  a rotation of angle degrees around the vector (x, y, z).  The current matrix (see
       glMatrixMode) is multiplied by a rotation matrix with the product replacing the current matrix, as if
       glMultMatrix were called with the following matrix as its argument:


         x^2(1-c)+c     xy(1-c)-zs     xz(1-c)+ys     0
         yx(1-c)+zs     y^2(1-c)+c     yz(1-c)-xs     0
         xz(1-c)-ys     yz(1-c)+xs     z^2(1-c)+c     0
              0              0               0        1



       Where  c  =  cos  (angle), s = sin (angle), and ||(x, y, z)|| = 1 (if not, the GL will normalize this
       vector).



       If the matrix mode is either GL_MODELVIEW or GL_PROJECTION,  all  objects  drawn  after  glRotate  is
       called  are  rotated.   Use glPushMatrix and glPopMatrix to save and restore the unrotated coordinate
       system.

NOTES
       This rotation follows the right-hand rule, so if the vector (x, y, z) points  toward  the  user,  the
       rotation will be counterclockwise.

ERRORS
       GL_INVALID_OPERATION  is  generated  if glRotate is executed between the execution of glBegin and the
       corresponding execution of glEnd.

ASSOCIATED GETS
       glGet with argument GL_MATRIX_MODE
       glGet with argument GL_COLOR_MATRIX
       glGet with argument GL_MODELVIEW_MATRIX
       glGet with argument GL_PROJECTION_MATRIX
       glGet with argument GL_TEXTURE_MATRIX

SEE ALSO
       glMatrixMode(3G), glMultMatrix(3G), glPushMatrix(3G), glScale(3G), glTranslate(3G)




                                                                                                GLROTATE(3G)