glRotate

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:

			 x2(1−c)+c  xy(1−c)−zs xz(1−c)+ys 0



















			 yx(1−c)+zs y2(1−c)+c  yz(1−c)−xs 0









			(				   )









			 xz(1−c)−ys yz(1−c)+xs z2(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)