OPEssentials

-- CODE --
local glassesTerminal = peripheral.warp("back")

drawBoxGradient(5,5,20,15,  0.6,0,0,0,  0.3,0,0,0)

function drawBox(xPos, yPos, width, height, color, opacity)
    glassesTerminal.addBox(xPos, yPos, width, height, color, opacity)
end
function drawBoxGradient(xPos, yPos, width, height,  FO,FR,FG,FB,  TO,TR,TG,TB)
    local I = 1
    while I <= height do
        local rgbcolor = {}
        rgbcolor["r"] =  math.ceil((FR - TR)) / height * I  + FR
        rgbcolor["g"] =  math.ceil((FG - TG)) / height * I  + FG
        rgbcolor["b"] =  math.ceil((FB - TB)) / height * I  + FB
        glassesTerminal.addBox(xPos, yPos + I, width, 1,rgbToHex(rgbcolor) , math.ceil((FO - TO)) / height * I  + FO)
        I = I +1
    end
end

local function rgbToHex(c)
    local output = decToHex(c["r"]) .. decToHex(c["g"]) .. decToHex(c["b"]);
    return "0x" .. output
end