Re: hueComponent not valid for the NSColor
Re: hueComponent not valid for the NSColor
- Subject: Re: hueComponent not valid for the NSColor
- From: Tamas Nagy <email@hidden>
- Date: Sat, 01 Nov 2014 20:43:13 +0100
Hi,
[NSColor whiteColor] produced a color which using the NSCalibratedWhiteColorSpace, and “hue” component is not exists in a "white-only colorspace”. In other words, that is not an RGB color space, that color space only contains white - but hue cannot be interpreted there.
Tamas
> On 01 Nov 2014, at 20:36, Torsten Curdt <email@hidden> wrote:
>
> I am struggling to understand why this causes an exception
>
> NSColor *base = [NSColor whiteColor];
> NSColor *stroke = [NSColor colorWithCalibratedHue:base.hueComponent
>
> saturation:base.saturationComponent
> brightness:0.4
> alpha:base.alphaComponent];
>
> "-hueComponent not valid for the NSColor NSCalibratedWhiteColorSpace 1 1;
> need to first convert colorspace."
>
> While the following colors work OK
>
> - [NSColor colorWithRed:1.0 green:1.0 blue:1.0 alpha:1.0]
> - [NSColor redColor]
>
> Can anyone offer some insights?
>
> cheers,
> Torsten
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