BouncingEffect for overscroll
[Issue] N/A
[Problem] new feature
[Cause] N/A
[Solution] the overscroll effect implemented with shader
test codes:
ImageActor imageActor = ImageActor::New( BitmapImage::New( 1, 1 ) );
imageActor.SetSize(720.f,58.f);
Toolkit::BouncingEffect bouncingEffect = Toolkit::BouncingEffect::New( Vector4(0.f,1.f,1.f,0.5f) );
imageActor.SetShaderEffect( bouncingEffect );
imageActor.SetParentOrigin( ParentOrigin::CENTER );
Stage::GetCurrent().Add( imageActor );
Animation animation = Animation::New(1.f);
animation.AnimateTo( Property( bouncingEffect, bouncingEffect.GetProgressRatePropertyName() ), 1.f,
AlphaFunctions::Bounce );
animation.Play();
Signed-off-by: Xiangyin Ma <x1.ma@samsung.com>