28 lines
1.5 KiB
Standard ML
28 lines
1.5 KiB
Standard ML
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structure Rect =
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struct
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fun lerp (startX, startY, drawWidth, drawHeight, windowWidth, windowHeight, r, g, b) : Real32.real vector =
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let
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val startX = Real32.fromInt startX
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val startY = Real32.fromInt startY
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val endY = windowHeight - startY
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val startY = windowHeight - (startY + drawHeight)
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val endX = startX + drawWidth
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val windowHeight = windowHeight / 2.0
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val windowWidth = windowWidth / 2.0
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in
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#[ (((startX * (1.0 - 0.733333349228)) + (endX * 0.733333349228)) / windowWidth) - 1.0,
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(((startY * (1.0 - 1.0)) + (endY * 1.0)) / windowHeight) - 1.0, r, g, b,
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(((startX * (1.0 - 0.733333349228)) + (endX * 0.733333349228)) / windowWidth) - 1.0,
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(((startY * (1.0 - 0.0)) + (endY * 0.0)) / windowHeight) - 1.0, r, g, b,
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(((startX * (1.0 - 0.266666650772)) + (endX * 0.266666650772)) / windowWidth) - 1.0,
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(((startY * (1.0 - 0.0)) + (endY * 0.0)) / windowHeight) - 1.0, r, g, b,
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(((startX * (1.0 - 0.266666650772)) + (endX * 0.266666650772)) / windowWidth) - 1.0,
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(((startY * (1.0 - 0.0)) + (endY * 0.0)) / windowHeight) - 1.0, r, g, b,
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(((startX * (1.0 - 0.266666650772)) + (endX * 0.266666650772)) / windowWidth) - 1.0,
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(((startY * (1.0 - 1.0)) + (endY * 1.0)) / windowHeight) - 1.0, r, g, b,
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(((startX * (1.0 - 0.733333349228)) + (endX * 0.733333349228)) / windowWidth) - 1.0,
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(((startY * (1.0 - 1.0)) + (endY * 1.0)) / windowHeight) - 1.0, r, g, b
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]
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end
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end
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