Something happen !! quick help ...

Can anyone explain for me this code i can`t understand it ....

Code:

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  Sub dimSquare()
        If xUp < 0 Then xUp = 0
        If xUp > 600 Then xUp = 600
        If yUp < 0 Then yUp = 0
        If yUp > 480 Then yUp = 480
        intW = Math.Abs(xUp - xDown)
        intH = Math.Abs(yUp - yDown)
        If intW > intH Then intW = intH
        If xUp < xDown Then intL = xDown - intW Else intL = xDown
        If yUp < yDown Then intT = yDown - intW Else intT = yDown
    End Sub
    Sub dimRectangle()
        If xUp < 0 Then xUp = 0
        If xUp > 1000 Then xUp = 1000
        If yUp < 0 Then yUp = 0
        If yUp > 480 Then yUp = 480
        intW = Math.Abs(xUp - xDown)
        intH = Math.Abs(yUp - yDown)
        If xUp < xDown Then intL = xDown - intW Else intL = xDown
        If yUp < yDown Then intT = yDown - intH Else intT = yDown
    End Sub
    Sub dimCircle()
        If xUp < 0 Then xUp = 0
        If xUp > 600 Then xUp = 600
        If yUp < 0 Then yUp = 0
        If yUp > 480 Then yUp = 480
        intW = Math.Abs(xUp - xDown)
        intH = Math.Abs(yUp - yDown)
        If intW < intH Then intW = intH
        intL = xDown - intW
        intT = yDown - intW
        intW *= 2
    End Sub
    Sub dimEllipse()
        If xUp < 0 Then xUp = 0
        If xUp > 600 Then xUp = 600
        If yUp < 0 Then yUp = 0
        If yUp > 480 Then yUp = 480
        intW = Math.Abs(xUp - xDown)
        intH = Math.Abs(yUp - yDown)
        intL = xDown - intW
        intT = yDown - intH
        intW *= 2
        intH *= 2
    End Sub

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You must remember we are all volunteers. We understand you need help but you will delay help in using poor thread titles. You say something has happened yet posted a question asking what code does. You clearly have not written this. Why should be look at your code when you have made no effort to explain what you are doing?

Quote:

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Originally Posted by ident

You must remember we are all volunteers. We understand you need help but you will delay help in using poor thread titles. You say something has happened yet posted a question asking what code does. You clearly have not written this. Why should be look at your code when you have made no effort to explain what you are doing?

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It's not a matter of being not understanding the code!it's about finding someone to explain the mathematical operations in the code so i can Learn and Apply it.
thank you

If you can understand mathematical symbols, you can understand that code:


Sub dimSquare()
If xUp < 0 Then xUp = 0 'Ensure that xUp is not less than 0
If xUp > 600 Then xUp = 600 'Ensure that xUp is not more than 600
If yUp < 0 Then yUp = 0 'Ensure that xUp is not less than 0
If yUp > 480 Then yUp = 480 'Ensure that xUp is not more than 480

intW = Math.Abs(xUp - xDown) 'Set intW to xUp minus xDown ensuring that the value is positive (that's the ABS part)
intH = Math.Abs(yUp - yDown)


etc etc..