[x3d-public] Scaling PositionInterpolators

[John Carlson]

Is there some way to scale PositionInterpolators with an MFVec3f scale
field to scale keyValues on initialization?  This would be a nice
addition!  I don’t know if Transforms or HAnim does it.

Google AI suggests this, but I don’t want to use a Script (these would be
key values, not keys).

function initialize() {
    update_keys();
}
function set_scale(val) {
    scale_vec = val;
    update_keys();
}
function update_keys() {
    var new_keys = new MFVec3f();
    for (var i = 0; i < original_pos.length; i++) {
        new_keys[i].x = original_pos[i].x * scale_vec.x;
        new_keys[i].y = original_pos[i].y * scale_vec.y;
        new_keys[i].z = original_pos[i].z * scale_vec.z;
    }
    scaled_keys = new_keys; // ROUTE this to PositionInterpolator.set_keyValue
}


I would say push the code to the browser, instead of more user code.

The example of this is getting a humanoid out of Blender 100 times the size
you want it to be.  (Meters vs centimeters), and you’re incorporating the
humanoid into a scene that’s at a different scale.  I would like to add
scale to the humanoid and the PositionInterpolators with fields.  My
PositionInterpolators are built for < 2m humanoids.

Yes, I know about unit statements.  Naively exporting JSON output from an
AI generated exporter does need to be fixed.  I’m trying to add non-Blender
animations (not 100x).  It’s a lot easier to add a scale to each
PositionInterpolator by hand than multiplying each keyValue value.  If I
shrink the human by 100x, maybe the x PositionInterpolator is shrunk too?
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