Question

in live wallpaper we have method called onOffsetsChanged which is called when user swipes on the screen of this phone the value of xOffset is changed from 0.1 to 0.9

now i want to make is this way that when the value falls less then 0.5

it might return different value

for example

0.5 –> 0.48

0.4 –> 0.46

0.3 –> 0.44

0.2 –> 0.42

0.1 –> 0.40

but when it increases from 0.5 it stays the same

0.9 –> 0.9

0.8 –> 0.8

0.7 –> 0.7

0.6 –> 0.6

can some one help me with this formula i am not able to get any logic here

@Override
public void onOffsetsChanged(final float xOffset, final float yOffset, final float xOffsetStep, final float yOffsetStep, final int xPixelOffset, final int yPixelOffset) 
{
    super.onOffsetsChanged(xOffset, yOffset, xOffsetStep, yOffsetStep, xPixelOffset, yPixelOffset);
    Runnable offsetsChangedCommand = new Runnable() 
    {
        public void run() {
            if (xOffsetStep != 0f) 
            {
                glRenderer.setParallax(xOffset - 0.5f);
            }
        };
    };
    executor.execute(offsetsChangedCommand);
}

Answer 1

There may be a better way, but the easiest thing I can think of is to do:

float actualOffset;
if(xOffset>0.5f)
{
    actualOffset=xOffset;
}
else
{
    actualOffset=0.38f+(xOffset*0.2f);
}

glRenderer.setParallax(actualOffset- 0.5f);