51 lines
1.8 KiB
VB.net
51 lines
1.8 KiB
VB.net
Imports System.Drawing
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Imports System.Drawing.Drawing2D
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Public Module HelpfulDrawingFunctions
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Public Function IsPointInRectangle(p As PointF, rect As RectangleF) As Boolean
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Dim bList As New List(Of Boolean)
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bList.Add(p.X > rect.Left)
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bList.Add(p.X < rect.Right)
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bList.Add(p.Y > rect.Top)
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bList.Add(p.Y < rect.Bottom)
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Return Not bList.Contains(False)
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End Function
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Public Function OverlapsTwoRectangles(a As RectangleF, b As RectangleF) As Boolean
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Return a.IntersectsWith(b) 'RectangleF.Intersect(a, b) <> RectangleF.Empty
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End Function
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Public Function RectangleContainsRectangle(parent As RectangleF, child As RectangleF) As Boolean
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Return parent.Contains(child)
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'Return _
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' IsPointInRectangle(New PointF(child.Top, child.Left), parent) AndAlso
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' IsPointInRectangle(New PointF(child.Top, child.Right), parent) AndAlso
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' IsPointInRectangle(New PointF(child.Bottom, child.Left), parent) AndAlso
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' IsPointInRectangle(New PointF(child.Bottom, child.Right), parent)
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End Function
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Public Function GetRectangle(p1 As PointF, p2 As PointF) As RectangleF
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Dim rect As New RectangleF
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Dim startIsEnd As Boolean = p1.X > p2.X AndAlso p1.Y > p2.Y
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Dim xValues() As Integer = {p1.X, p2.X}
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Dim yValues() As Integer = {p1.Y, p2.Y}
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rect.Location = New PointF(xValues.OrderBy(Function(n) n).First,
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yValues.OrderBy(Function(n) n).First)
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rect.Size = New SizeF(xValues.OrderByDescending(Function(n) n).First,
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yValues.OrderByDescending(Function(n) n).First)
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rect.Size = New SizeF(rect.Size.Width - rect.Location.X,
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rect.Size.Height - rect.Location.Y)
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Return rect
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End Function
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End Module
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