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Fan Transformation
Dipanshu Kumar edited this page Mar 14, 2018
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3 revisions
public class FanTransformation implements ViewPager.PageTransformer{
@Override
public void transformPage(View page, float position) {
page.setTranslationX(-position*page.getWidth());
page.setPivotX(0);
page.setPivotY(page.getHeight()/2);
page.setCameraDistance(20000);
if (position < -1){ // [-Infinity,-1)
// This page is way off-screen to the left.
page.setAlpha(0);
}
else if (position <= 0){ // [-1,0]
page.setAlpha(1);
page.setRotationY(-120*Math.abs(position));
}
else if (position <= 1){ // (0,1]
page.setAlpha(1);
page.setRotationY(120*Math.abs(position));
}
else { // (1,+Infinity]
// This page is way off-screen to the right.
page.setAlpha(0);
}
}
}