llTextureAnim()

Is it just me or does llTextureAnim() insist on resizing and wrongly offsetting textures?

The set-up is this; I have a spherical part to a head (furry) with a four-frame eye blink texture. Now the, the eyes need to be scaled to 0.8, 0.7, rotated -90º and with a base offset of 0.625, 0.4 (for the first-frame).

I'd hoped to use llTextureAnim() to then animate the frames forward and then back again under the impression it would simply add or remove 0.5 to the two offset values to achieve the animation. However, it messes, apparently eager to force the scale and offset to whatever it feels like, leaving me with beady little eyes that are in the wrong place.

Currently what I have instead is:

default {
    state_entry() {
        llOffsetTexture(0.625, 0.4, 1);
        llSetTimerEvent(8.0 + llFrand(6.0));
    }
    
    timer() {
        llOffsetTexture(0.125, 0.4, 1);
        llOffsetTexture(0.625, 0.9, 1);
        llOffsetTexture(0.125, 0.9, 1);
        llSleep(0.1);
        llOffsetTexture(0.625, 0.9, 1);
        llOffsetTexture(0.125, 0.4, 1);
        llOffsetTexture(0.625, 0.4, 1);
    }
}

(excluding a little lag-checker which stops the blinking because it looks crap when it's lagging too much).

Anyone got any ideas how to recreate this using llTextureAnim() instead? Or is it just not going to work?

No, not "whatever it feels like", "whatever you tell it." llSetTextureAnim assumes the frames in your animation texture are tiled to exactly fill the number of rows and columns you tell it the texture has. If you tell it 2 rows and 2 columns, the scale will be < 0.5, 0.5 > and the offsets will be < 0.25, -0.25 >, < 0.25, 0.25 >, <-0.25, -0.25 > and < -0.25, 0.25 >, respectively. If the frames are not properly set up in the texture, it will have to be re-done and re-uploaded.