MapObjects2\Samples\VBNet\Geometry例子里的空間幾何圖形的集合運算有這樣一個方法：

Private Function MakeExtentFromXYScale(falseX As Double, falseY As Double, xyScale As Double) As Rectangle' max integer for positive integer coord spaceDim c_maxGeomInt As Long = 2147483645Dim ext As New Rectangle' Shift origin left and down to match the precisionext.Left = Int(falseX * xyScale) / xyScaleext.Bottom = Int(falseY * xyScale) / xyScale' Set width and height of the rectangle to be a square which is sized' fill positive integer space at the given scaleext.Right = ext.Left + c_maxGeomInt / xyScaleext.Top = ext.Bottom + ext.Right - ext.LeftMakeExtentFromXYScale = ext End Function?

轉載于:https://www.cnblogs.com/Doho/archive/2007/04/01/695592.html

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