On 11/24/2016 6:46 PM, clipka wrote:
> Am 24.11.2016 um 22:50 schrieb Mike Horvath:
>> It occurred to me that the color solid should not extend beyond a
>> cylinder with radius 1 and height 1. I have attached an overhead view.
>
> May I ask the stupid question, "why not"?
>
> I would expect the Lch colour space to encompass all the RGB colour
> space, so the boundaries of the latter should be sufficient to bound the
> shape.
>
> My guess is that the issues you see with the shape are due to bogosities
> in your colour conversion functions.
>

L, C and H are supposed to form a cylinder. There are some very small 
sRGB bits poking outside of the cylinder. I guess I could show the bits 
as well, as long as I explain what they are.

Also, I *did* make a mistake in the color conversion code. I was 
clamping L, C and H to 0..100, 0..100 and 0..360 incorrectly. Once I 
stopped clamping, the shape turned into what I have been expecting based 
on earlier tests.

I've attached the final shape, with the outside sRGB bits trimmed off.

Mike

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