<layers>
<visual>

<param name="scale_x" type="anim">
    <duration>0.3</duration>
    <style>linear</style>
    <keyframe at="0.0">0.0</keyframe>
    <keyframe at="1.0">1.0</keyframe>
    <start ref="visual.width">1</start>
    <end ref="screen.width">1</end>
</param>
    
<param name="scale_y" type="anim">
    <duration>0.3</duration>
    <style>linear</style>
    <keyframe at="0.0">0.0</keyframe>
    <keyframe at="1.0">1.0</keyframe>
    <start ref="visual.height">1</start>
    <end ref="screen.height">1</end>
</param>

<param name="scale_origin_x" ref="screen.width">0.5</param>
<param name="scale_origin_y" ref="screen.height">0.5</param>

<param name="opacity" type="anim">
<duration>0.3</duration>
<style>linear</style>
<keyframe at="0.0">1.0</keyframe>
<keyframe at="0.5">1.0</keyframe>
<keyframe at="1.0">0.5</keyframe>
</param>

</visual>
</layers>