Gravity Sensing

<?xml version="1.0" encoding="utf-8"?>
<Lockscreen version="1" frameRate="60"  displayDesktop="true" screenWidth="1080">
<!-- Acceleration sensor, visible variable-->
    <VariableBinders>
    <SensorBinder type="accelerometer">
        <Variable name="x_1" index="0"/>
            <Variable name="y_1" index="1"/>    
    </SensorBinder>
    </VariableBinders>
<!-- The star background references the X-axis direction of the acceleration sensor. That is, the star background changes when the user rotates the mobile phone left or right.-->
    <Image x="#screen_width/2-(#x_1)*30" y="#screen_height/2" align="center" alignV="center" src="xx.jpg" visibility="eq(#dt,1)"/>    
<!-- The small planet references the X-axis and Y-axis directions of the acceleration sensor. That is, the small planet changes when the user rotates the mobile phone up, down, left, or right.-->
    <Image x="#screen_width/2+(#x_1)*20" y="#screen_height/2-(#y_1)*10" align="center" alignV="center" src="xxq01.png" visibility="eq(#dt,1)">
        <SizeAnimation>
            <Size w="1152" h="1920" time="0"/>
            <Size w="1440" h="2400" time="900"/>            
            <Size w="1440" h="2400" time="15000"/>        
        </SizeAnimation>            
    </Image>
    <Image x="#screen_width/2+(#x_1)*10" y="#screen_height/2-(#y_1)*5" align="center" alignV="center" src="xxq02.png" visibility="eq(#dt,1)">
        <SizeAnimation>
            <Size w="1152" h="1920" time="0"/>
            <Size w="1440" h="2400" time="900"/>            
            <Size w="1440" h="2400" time="15000"/>            
        </SizeAnimation>        
    </Image>
<!-- Slide up to unlock the screen.-->
    <Button x="0" y="0" w="#screen_width" h="#screen_height" visibility="eq(#stapp,1)">
            <Triggers>
              <Trigger action="up">
               <ExternCommand command="unlock" condition="gt(#touch_begin_y-#touch_y,260)"/>
              </Trigger>
           </Triggers>
    </Button>    
</Lockscreen>