#import "SPTransitions+CustomTransitions.h"
 
@implementation SPTransitions (CustomTransitions)
 
+ (float)easeOutElasticShort:(float)ratio
{
    if (ratio == 0.0f || ratio == 1.0f) return ratio;
    else
    {
        float bounce_factor = -5.0f;
        float p = 0.6f;
        float s = p / 4.0f;
        return powf(2.0f, bounce_factor*ratio) * sinf((ratio-s)*TWO_PI/p) + 1.0f;
    }
}
 
@end