structure AsciiMinus =
struct
  fun lerp (startX, startY, drawWidth, drawHeight, windowWidth, windowHeight, r, g, b) : Real32.real vector =
    let
       val startX = Real32.fromInt startX
       val startY = Real32.fromInt startY
       val endY = windowHeight - startY
       val startY = windowHeight - (startY + drawHeight)
       val endX = startX + drawWidth
       val windowHeight = windowHeight / 2.0
       val windowWidth = windowWidth / 2.0
    in
       #[      (((startX * (1.0 - 0.66666662693)) + (endX * 0.66666662693)) / windowWidth) - 1.0,
      (((startY * (1.0 - 0.400000035763)) + (endY * 0.400000035763)) / windowHeight) - 1.0, r, g, b,
      (((startX * (1.0 - 0.66666662693)) + (endX * 0.66666662693)) / windowWidth) - 1.0,
      (((startY * (1.0 - 0.466666638851)) + (endY * 0.466666638851)) / windowHeight) - 1.0, r, g, b,
      (((startX * (1.0 - 0.333333313465)) + (endX * 0.333333313465)) / windowWidth) - 1.0,
      (((startY * (1.0 - 0.466666638851)) + (endY * 0.466666638851)) / windowHeight) - 1.0, r, g, b,
      (((startX * (1.0 - 0.333333313465)) + (endX * 0.333333313465)) / windowWidth) - 1.0,
      (((startY * (1.0 - 0.466666638851)) + (endY * 0.466666638851)) / windowHeight) - 1.0, r, g, b,
      (((startX * (1.0 - 0.333333313465)) + (endX * 0.333333313465)) / windowWidth) - 1.0,
      (((startY * (1.0 - 0.400000035763)) + (endY * 0.400000035763)) / windowHeight) - 1.0, r, g, b,
      (((startX * (1.0 - 0.66666662693)) + (endX * 0.66666662693)) / windowWidth) - 1.0,
      (((startY * (1.0 - 0.400000035763)) + (endY * 0.400000035763)) / windowHeight) - 1.0, r, g, b
    ]
  end
end