55 lines
1.5 KiB
Standard ML
55 lines
1.5 KiB
Standard ML
signature APP_INIT =
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sig
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val fromWindowWidthAndHeight: int * int -> AppType.app_type
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end
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structure AppInit :> APP_INIT =
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struct
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open AppType
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fun helpFromWidthAndHeight
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(windowWidth, windowHeight, wStart, wFinish, hStart, hFinish) : app_type =
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let
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val xClickPoints = ClickPoints.generate (wStart, wFinish)
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val yClickPoints = ClickPoints.generate (hStart, hFinish)
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in
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{ triangles = []
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, triangleStage = NO_TRIANGLE
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, windowWidth = windowWidth
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, windowHeight = windowHeight
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, xClickPoints = xClickPoints
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, yClickPoints = yClickPoints
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, undo = []
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, redo = []
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, mouseX = 0.0
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, mouseY = 0.0
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, showGraph = true
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, arrowX = 0
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, arrowY = 0
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}
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end
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fun fromWindowWidthAndHeight (windowWidth, windowHeight) =
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if windowWidth = windowHeight then
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helpFromWidthAndHeight
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(windowWidth, windowHeight, 0, windowWidth, 0, windowHeight)
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else if windowWidth > windowHeight then
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let
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val difference = windowWidth - windowHeight
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val wStart = difference div 2
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val wFinish = wStart + windowHeight
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in
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helpFromWidthAndHeight
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(windowWidth, windowHeight, wStart, wFinish, 0, windowHeight)
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end
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else
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let
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val difference = windowHeight - windowWidth
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val hStart = difference div 2
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val hFinish = hStart + windowWidth
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in
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helpFromWidthAndHeight
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(windowWidth, windowHeight, 0, windowWidth, hStart, hFinish)
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end
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end
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