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Test when objects/shapes meet

Posted By:      Posted Date: September 08, 2010    Points: 0   Category :WPF
I have included a full test routine that moves a Rectangle across the screen towards an Ellipse that increases in size.   I want to know when the Red Rectangle (mySqaure) is on the space occupied by the Ellipse (testCricle).   Knowing the centre of the Ellipse it should be possible to do this mathematically (but I am not clever enough) or is there some way to do it by pixel colour testing?   I know it is possible to get a bitmap image but feel the increasing size of the Ellipse would make this method too slow.   I would very much appreciate any assistance. Imports System.Windows.Threading Class MainWindow Public myEllipse As New Ellipse Public myLabel As New Label Public mySquare As New Rectangle Public myDockpanel As New DockPanel Public myGrid As New Grid Public myCanvas As New Canvas Public myStackPanel As New StackPanel Public myRectangle As New Rectangle Public testCircle As New Ellipse Public myRectangle2 As New Rectangle Public count As Integer Public distance As Integer Friend WithEvents myButton1 As New Button Public mainRectangle As New Rectangle Public myPoint As Point Public missed As Integer Public mytest As Point Public dt As New DispatcherTimer Public intI As Integer Public posy As Integer Public posx As Integer Public testy As Integer Public testx As Integer Public speed As Double Public

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