rotate¶

set the scene's rotation and redraw
NAME
    rotate - set the scene's rotation and redraw

SYNOPSIS
    rotate [x y z [px py pz]]

DESCRIPTION
    The scene is GL command list 0 -- whatever tri built (stage 10c).
    This command rewrites the card's MODELING matrix and replays the
    list: five small commands, the fabric does the rest. Angles are
    DEGREES (the card's native unit; the brads of stages 7-9 died with
    the sine table): 360 is a full turn, 90 a quarter, negative allowed.
    They apply as yaw (y), then pitch (x), then roll (z), about the
    pivot point (px py pz; the origin without one). Scenes whose depth
    is baked into their vertices turn in place when the pivot is their
    centre (0 0 400, say). Bare ROTATE resets the rotation. Answers
    ?No scene until a tri has recorded one. Needs the GL engine.

EXAMPLES
    tri -80 -80 300 80 -80 300 0 40 420 f 31 0 0
    rotate 0 45 0 0 0 340     yaw the scene about its middle
    rotate 20 45 0 0 0 340    ...and tip it forward 20 degrees
    rotate                    back to unrotated

SEE ALSO
    tri, camera, gl, page