GLROTATE(3G) UNIX Programmer's Manual 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(1c) + c xy(1c)  zs xz(1c) + ys 0 
 
 yx(1c) + zs y2(1c) + c yz(1c)  xs 0 
 
 xz(1c)  ys yz(1c) + xs z2(1c) + 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 unro
tated coordinate system.
NOTES
This rotation follows the righthand rule, so if the vector
(x,y,z) points toward the user, the rotation will be coun
terclockwise.
MirBSD #10current Printed 20211207 1
GLROTATE(3G) UNIX Programmer's Manual GLROTATE(3G)
ERRORS
GL_INVALID_OPERATION is generated if glRotate is executed
between the execution of glBegin and the corresponding exe
cution 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)
MirBSD #10current Printed 20211207 2