update method
Implementation
void update(double deltaTime) {
if (paused) return;
_finished = false;
switch (mode) {
case AnimMode.playOnce:
_updatePlayOnce(deltaTime);
break;
case AnimMode.playOnceReset:
_updatePlayOnceReset(deltaTime);
break;
case AnimMode.loop:
_updateLoop(deltaTime);
break;
case AnimMode.pingPong:
_updatePingPong(deltaTime);
break;
}
}