63 lines
2.3 KiB
Lua
63 lines
2.3 KiB
Lua
--[[
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Copyright (c) 2015, Robert 'Bobby' Zenz
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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--]]
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--- A simple container for a color and its hex string representation.
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--
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-- Even though it is not enforced, this container is assumed to be imutable.
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Color = {
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--- The red component, a number between 0 and 255.
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red = 0,
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--- The green component, a number between 0 and 255.
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green = 0,
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--- The blue component, a number between 0 and 255.
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blue = 0,
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--- The hex representation, like FFFFFF for white.
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hex = "000000"
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}
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--- Creates a new instance of Color.
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--
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-- @param red The red component, a number between 0 and 255.
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-- @param green The green component, a number between 0 and 255.
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-- @param blue The blue component, a number between 0 and 255.
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function Color:new(red, green, blue)
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local instance = {
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red = mathutil.clamp(red, 0, 255),
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green = mathutil.clamp(green, 0, 255),
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blue = mathutil.clamp(blue, 0, 255)
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}
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instance.hex = string.format("%02X%02X%02X", instance.red, instance.green, instance.blue)
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setmetatable(instance, self)
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self.__index = self
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return instance
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end
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