1991-2006 Silicon Graphics, Inc.

glRotate

3G

glRotate

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 x ⁢ y ⁡ 1 - c - z ⁢ s x ⁢ z ⁡ 1 - c + y ⁢ s 0 y ⁢ x ⁡ 1 - c + z ⁢ s y 2 ⁡ 1 - c + c y ⁢ z ⁡ 1 - c - x ⁢ s 0 x ⁢ z ⁡ 1 - c - y ⁢ s y ⁢ z ⁡ 1 - c + x ⁢ s 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

,

glMultMatrix

,

glPushMatrix

,

glScale

,

glTranslate

## Copyright

Copyright 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.