MPSNNGramMatrixCallback (moe.platform.ios API)

All Superinterfaces:

NSCoding, NSCopying, NSSecureCoding
```
public interface MPSNNGramMatrixCallback
extends NSSecureCoding, NSCopying
```
[@protocol] MPSNNGramMatrixCallback MPSNNGramMatrixCallback Defines a callback protocol for @ref MPSNNGramMatrixCalculationNode to set the 'alpha' scaling value dynamically just before encoding the underlying MPSNNGramMatrixCalculation kernel.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`float`	`alphaForSourceImageDestinationImage(MPSImage sourceImage, MPSImage destinationImage)`	Returns the desired alpha scaling value.

Methods inherited from interface apple.foundation.protocol.NSCoding
encodeWithCoder, initWithCoder

Methods inherited from interface apple.foundation.protocol.NSCopying
copyWithZone

Methods inherited from interface apple.foundation.protocol.NSSecureCoding
_supportsSecureCoding

- Method Detail
  - alphaForSourceImageDestinationImage
```
float alphaForSourceImageDestinationImage(MPSImage sourceImage,
                                          MPSImage destinationImage)
```
    Returns the desired alpha scaling value.
    
    Parameters:
    
    sourceImage - One of the source images in the batch given as a reference for the alpha computation.
    
    destinationImage - One of the destination images in the batch given as a reference for the alpha computation.
    
    Returns:
    
    The desired alpha value.