Colour operations using CyberShadow's graphics library

[Phil via Digitalmars-d-learn]

I've done this by declaring a static array of the same length as 
ViewColor!V.channels, and foreach-ing over the channels in a 
colour, but this seem uglier than it need to - it would be nice 
if I could just define + and = appropriately on double[] and 
colours to do the right thing.

On Sunday, 18 January 2015 at 21:10:05 UTC, Phil wrote:
> Hi, I'm new to D and having a go at writing some image 
> processing stuff using Vladimir's ae.graphics library.
>
> To filter (i.e. perform correlations/convolutions) on a view 
> with colour type C, I'd like to perform intermediate 
> calculations using a colour with the same number of channels as 
> C, but all of type double, and then to convert back to 
> something of type C at the end.
>
> e.g. for a horizontal blur I'd like to keep a running total per 
> channel, packaged in an all-doubles colour type, and then write 
> (total / kernel width) for each channel back into a value of 
> type C.
>
> How do I perform the necessary type magic here? Thanks