GLROTATE(3G) manual page

Table of Contents

## 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 )

eqn not supported

## 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:

eqn not supported

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)

Table of Contents

- Name
- C Specification
- Parameters
- Description
- Notes
- Errors
- Associated Gets
- See Also