[vtk-developers] vtkColorTransferFunction

[Lorensen, William E (CRD)]

Lisa,
	If you deprecate any methods, please have the old methods print out explicit instructions on
how to upgrade to the new methods.

I'd prefer leaving the old methods. We have no idea who might be using this stuff.

Also, vtkColorTransferFunction has really low coverage (~30%). Now might be the time to improve that.

Bill

> -----Original Message-----
> From:	Lisa Sobierajski Avila [SMTP:lisa.avila at kitware.com]
> Sent:	Thursday, June 22, 2000 11:11 AM
> To:	vtk-developers at public.kitware.com
> Subject:	[vtk-developers] vtkColorTransferFunction
> 
> Hello,
> 
> I am make some modifications to vtkColorTransferFunction, and I have 
> determined that I have two choices on how to proceed:
> 
> 
> 1)  Modify vtkColorTransferFunction so that R, G, and B are no longer 
> independent. That means the AddRedPoint, AddGreenPoint, AddBluePoint, can 
> remain, but will actually probe the current function to get the other two, 
> then AddRGBPoint. The methods that would disappear would be GetRedFunction, 
> GetGreenFunction, and GetBlueFunction since this won't use three 
> vtkPiecewiseFunctions as the underlying representation.
> 
> 2) Create a new subclass of vtkColorToScalar that supports the 
> functionality I am looking for. This will also support all of the current 
> vtkColorTransferFunction functionality except for the independence of the 
> functions.
> 
> 
> Is anyone out there using the red, green, and blue functions independently? 
> I'd rather not see two classes that do almost the same thing, but my 
> changes will essentially break some methods.
> 
> Any comments?
> 
> 
> Lisa
> 
> 
> 
> 
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