---
title: "ScaleAlpha Constructor (Pipeline)"
canonical: https://www.graphicsmill.com/docs/gm/C_Aurigma_GraphicsMill_Transforms_ScaleAlpha_ctor_1_074df834.htm
product: "Graphics Mill"
---

# ScaleAlpha Constructor (Pipeline)
 
Initializes a new instance of the [ScaleAlpha](https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_Transforms_ScaleAlpha.htm.md) class with the given scale source.
 
**Namespace:** [Aurigma.GraphicsMill.Transforms](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill_Transforms.htm.md)
 **Assembly:** Aurigma.GraphicsMill (in Aurigma.GraphicsMill.dll)
 
## Syntax
  
```csharp
public ScaleAlpha(Pipeline scaleSource
)
```
 
### Parameters
 
 - scaleSource
     - Type: [Aurigma.GraphicsMill.Pipeline](https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_Pipeline.htm.md)
A pipeline that produces a grayscale image to scale the channel to.
   
## See Also

### Reference

- [ScaleAlpha Class](https://www.graphicsmill.com/docs/gm/T_Aurigma_GraphicsMill_Transforms_ScaleAlpha.htm.md)
- [ScaleAlpha Overload](https://www.graphicsmill.com/docs/gm/O_T_Aurigma_GraphicsMill_Transforms_ScaleAlpha_ctor.htm.md)
- [Aurigma.GraphicsMill.Transforms Namespace](https://www.graphicsmill.com/docs/gm/N_Aurigma_GraphicsMill_Transforms.htm.md)