--[[
Copyright (c) 2015, Robert 'Bobby' Zenz
All rights reserved.

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* Redistributions of source code must retain the above copyright notice, this
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--]]


--- A simple container for a color and its hex string representation.
--
-- Even though it is not enforced, this container is assumed to be imutable.
Color = {
	--- The red component, a number between 0 and 255.
	red = 0,
	--- The green component, a number between 0 and 255.
	green = 0,
	--- The blue component, a number between 0 and 255.
	blue = 0,
	--- The hex representation, like FFFFFF for white.
	hex = "000000"
}


--- Creates a new instance of Color.
--
-- @param red The red component, a number between 0 and 255.
-- @param green The green component, a number between 0 and 255.
-- @param blue The blue component, a number between 0 and 255.
function Color:new(red, green, blue)
	local instance = {
		red = mathutil.clamp(red, 0, 255),
		green = mathutil.clamp(green, 0, 255),
		blue = mathutil.clamp(blue, 0, 255)
	}
	
	instance.hex = string.format("%02X%02X%02X", instance.red, instance.green, instance.blue)
	
	setmetatable(instance, self)
	self.__index = self
	
	return instance
end