glrotatef(3) - Linux man page

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:

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