glRotate

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.

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:

`xx` (1 c) + c	`xy` (1 c) `z`s	`xz` (1 c) + `y`s	0
`yx` (1 c) + `z`s	`yy` (1 c) + c	`yz` (1 c) `x`s	0
`zx` (1 c) `y`s	`zy` (1 c) + `x`s	`zz` (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_MODELVIEW_MATRIX
glGet with argument GL_PROJECTION_MATRIX
glGet with argument GL_TEXTURE_MATRIX