`GuiColorBarHue` bug when selecting a color about raygui HOT 5 CLOSED

This happens, because as the RGB Color approaches black or white there is not enough 'color' information to infer a hue. This issue can be avoided by using the HSV equivalent (GuiColorPickerHSV), to avoid conversion from RGBA to HSV.

This can be a bit tricky to deal with and basically requires the 'global' color to be stored as HSV and converted to Color when needed.

further description of the issue:

The specific sequence of events in GuiColorPicker (the Color/RGBA variant) is:

• Color (RGBA) comes in and goes through the GuiColorPanel as RGBA
• Then RGB is converted to HSV to go through the GuiColorBarHue (this is where the hue value suffers from low resolution)
• Then the hue bar result is converted from HSV to RGB and returned

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@jk- I'm afraid this is related to multi-float-operations rounding issues due to the immediate-mode nature of the control. I think #370 should minimize this issue...

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@jk- I'm afraid this is related to multi-float-operations rounding issues due to the immediate-mode nature of the control. I think #370 should minimize this issue...

I don't think it will change this. I am not sure that this situation can be improved, because it would require buffering of the hue value, which is goes against the immediate-mode, as you already said.

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i think docs are fine here. should we update the examples?

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should we update the examples?

I just had a look and it seemed so simple that I just did it :P
The controls_test_suite is the only example that needs updating I think

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