Colors

[Fox32]

Vector4 is designed to hold color values, too. What I'm missing are methods to convert colors to and from other formats like:

• RGB(A)
• Hex RGB String (like CSS color)
• (HSV)

A colors class with definition of some known colors would be nice for fast prototyping, like:

colors.red => new Vector4(1.0, 0.0, 0.0, 1.0)
colors.green => new Vector4(0.0, 1.0, 0.0, 1.0)
...
colors.all => [colors.red, colors.green, ...] // Allows to choose a random color if needed

I could implement this. But the question is, is this more a vector_math or spectre related thing? Or is a own color class, like three.js has, the way to go?

[johnmccutchan]

Hi,

I think having an implementation in vector math makes sense.

[Fox32]

Seperate Color class vs Vector4?

Top level methods for conversation to the different formats?

[johnmccutchan]

Separate color class with (static?) methods for converting between different formats.

[Fox32]

Ok, I will look into this in the beginning of the next month.

[johnmccutchan]

Hi, any update on color class?

[Fox32]

I stopped because I'm not sure if a seperate color class is usefull.Some users may want a rgb, some a argb color. But both classes would manly be copies of Vector3 oder Vector4. If they are seperate classes interacting with methods that take a Vector4 as an argument may be difficult. I think we should add the color related functions to the Vector4 (and 3?) class instead.
For the list of named colors I opened issue #46 to allow creating read only colors.

[johnmccutchan]

Hi,

I think the color support should be implemented as classes with static methods:

class ColorConversion {
static void FromRGBAToHSV(Vector4 v, Vector3 o);
}

[johnmccutchan]

Ping.

[Fox32]

Ass a list what I would implement

• fromRGBA
• Parsing from hex color string with RGBA support
• To hex color string
• RGBA to HSV
• HSV to RGBA
• RGBA to HSL
• HSL to RGBA
• To grayscaled
• Gamma/Linear conversation?
  All methods have a input and a ouput Vector4 as parameter
• alphaBlend(Vector4 a, Vector4 b, Vector4 result)

Anything else? I will look into it later today or tomorrow.