provide access to the time of an animation layer

[stephengold]

I want to synchronize some anim clips with other events occuring in my app.

The old system provides AnimChannel.getTime() and .setTime() to access the time of the animation that’s playing. In the new system, time is stored in the Layer; there’s no getTime() or setTime().

Public getters and setters should be added, probably to the AnimComposer class.

For more information, see the forum topic: https://hub.jmonkeyengine.org/t/synchronizing-an-animclip/42393

[Ali-RS]

Are you Ok with this?

    /**
     * Returns current time of the specified layer.
     */
    public double getTime(String layerName) {
        Layer l = layers.get(layerName);
        if (l == null) {
            throw new IllegalArgumentException("Unknown layer " + layerName);
        }
        return l.time;
    }

    /**
     * Sets current time on the specified layer. 
     */
    public void setTime(String layerName, double time) {
        Layer l = layers.get(layerName);
        if (l == null) {
            throw new IllegalArgumentException("Unknown layer " + layerName);
        }
        Action currentAction = layer.currentAction;
        if (currentAction == null) {
            throw new RuntimeException("There is no action running in layer " + layerName);
        }
        if (time < 0 || time > currentAction.getLength()) {
            throw new IllegalArgumentException("Time should be in [0, " + currentAction.getLength() + "]");
        }
        l.time = time;
    }

[stephengold]

That's roughly what I have in mind. Note: lenght -> length.

[Ali-RS]

@stephengold PR is submitted: #1201

[stephengold]

Thank you!

[stephengold]

Resolved in master branch at 5c75af1 .