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GLROTATE

NAME
C SPECIFICATION
PARAMETERS
DESCRIPTION
NOTES
ERRORS
ASSOCIATED GETS

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

glMatrixMode(3G), glMultMatrix(3G), glPushMatrix(3G), glScale(3G), glTranslate(3G)

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