Transformation 2.7.0 API

```
public interface Transformation

                    
```
An interface for making transformations to an image's pixel data.
NOTE: If DrawableResult.drawable or DecodeResult.drawable is not a BitmapDrawable, it will be converted to one. This will cause animated drawables to only draw the first frame of their animation.

Method Summary

Modifier and Type	Method	Description
`abstract Bitmap`	`transform(Bitmap input, Size size)`	Apply the transformation to input and return the transformed Bitmap.
`abstract String`	`getCacheKey()`	The unique cache key for this transformation.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - transform
```
 abstract Bitmap transform(Bitmap input, Size size)
```
    Apply the transformation to input and return the transformed Bitmap.
    
    Parameters:
    
    input - The input Bitmap to transform.
    
    size - The size of the image request.
  - getCacheKey
```
 abstract String getCacheKey()
```
    The unique cache key for this transformation.
    The key is added to the image request's memory cache key and should contain any params that are part of this transformation (e.g. size, scale, color, radius, etc.).