Rainbow RGB Algorithm?

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num is a number between 0 and 1. I wrote the function based on this rgb color wheel picture I found on the internet. But why don’t you want to use Color3.fromHSV?

local function getPositiveAngleDiff(a, b)
    return a < b and a+360-b or a-b
end

-- returns r, g and b
local function getRainbowRGB(num)
    local angle = num*360
    local components = {}
    for i = 1, 3 do
        local startAngle = ((i+1)*120)%360
        local diffFromStart = getPositiveAngleDiff(angle, startAngle)
        if diffFromStart < 60 then
            components[i] = diffFromStart/60*255
        elseif diffFromStart <= 180 then
            components[i] = 255
        elseif diffFromStart < 240 then
            components[i] = (240-diffFromStart)/60*255
        else
            components[i] = 0
        end
    end
    return components[1], components[2], components[3]
end
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