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bash-2.05b$ man glRotate

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:

x2(1-c)+c xy(1-c)-zs xz(1-c)+ys 0

yx(1-c)+zs y2(1-c)+c yz(1-c)-xs 0

( )

xz(1-c)-ys yz(1-c)+xs z2(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(3G), glMultMatrix(3G), glPushMatrix(3G), glScale(3G),

glTranslate(3G)

Like it?

Go get it!. Just remember to install the GL stuff.