MirOS Manual: glRotate(3), glRotated(3), glRotatef(3)

GLROTATE(3G)        UNIX Programmer's Manual         GLROTATE(3G)


     glRotated, glRotatef - multiply the current matrix by a
     rotation matrix


     void glRotated( GLdouble angle,
                     GLdouble x,
                     GLdouble y,
                     GLdouble z )
     void glRotatef( GLfloat angle,
                     GLfloat x,
                     GLfloat y,
                     GLfloat z )


     angle  Specifies the angle of rotation, in degrees.

     x, y, z
            Specify the x, y, and z coordinates of a vector,


     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 unro-
     tated coordinate system.


     This rotation follows the right-hand rule, so if the vector
     (x,y,z) points toward the user, the rotation will be coun-

MirOS BSD #10-current   Printed 6.10.2015                       1

GLROTATE(3G)        UNIX Programmer's Manual         GLROTATE(3G)


     GL_INVALID_OPERATION is generated if glRotate is executed
     between the execution of glBegin and the corresponding exe-
     cution of glEnd.


     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)

MirOS BSD #10-current   Printed 6.10.2015                       2

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