Maths

[JohnOne]

I am an utter dumb as when it comes to mathematics and need the formula equation to resize video.

Say the video is 1046 width and 562 height ans I want to make it smaller, for example I want to make its width 640 or anything else, then how do I keep the relative height?

If anyone has the time and inclination to show me, here is a func template.

$W = 1046
$H = 562

ConsoleWrite("Width = " & $W & @CRLF)
ConsoleWrite("Height = " & $H & @CRLF)

_NewSize($W, $H)

ConsoleWrite("New Width = " & $W & @CRLF)
ConsoleWrite("New Height = " & $H & @CRLF)

Func _NewSize(ByRef $X, ByRef $Y)
    $newwidth = 640
    ;Some fancy equation
    ;$X = 
    ;$Y = 
EndFunc

[Melba23]

JohnOne,

My suggestion:

$W = 1046
$H = 562

ConsoleWrite("Width = " & $W & @CRLF)
ConsoleWrite("Height = " & $H & @CRLF)
ConsoleWrite("Ratio: " & Round($W/$H, 2) & @CRLF)

$newwidth = 640
_NewSize($W, $H, $newwidth)

ConsoleWrite("New Width = " & $W & @CRLF)
ConsoleWrite("New Height = " & $H & @CRLF)
ConsoleWrite("Ratio: " & Round($W/$H, 2) & @CRLF)

Func _NewSize(ByRef $Width, ByRef $Height, $NewWidth)
    $Height = Int($NewWidth / $Width * $Height)
    $Width = $NewWidth
EndFunc

M23

[JohnOne]

Cheers M23.

[Danyfirex]

my way.

$W = 1046
$H = 562

ConsoleWrite("Width = " & $W & @CRLF)
ConsoleWrite("Height = " & $H & @CRLF)

_NewSize($W, $H)

ConsoleWrite("New Width = " & $W & @CRLF)
ConsoleWrite("New Height = " & $H & @CRLF)

Func _NewSize(ByRef $X, ByRef $Y)
    $newwidth = 640
    $Y= int($Y-( $Y*((100-($newwidth/$X)*100))/100))
    $X=$newwidth
EndFunc

Saludos

[JohnOne]

Where does the value 100 come from?

[Danyfirex]

is the reference to 100%

Saludos

[JohnOne]

I see, thanks.

[Werty]

or...

$W = 1046
$H = 562
$newwidth = 640
ConsoleWrite("Width = " & $W & @CRLF)
ConsoleWrite("Height = " & $H & @CRLF)

_NewSize($W, $H)

ConsoleWrite("New Width = " & $newwidth & @CRLF)
ConsoleWrite("New Height = " & $H & @CRLF)

Func _NewSize(ByRef $X, ByRef $Y)
    $H = Int($H / $W * $newwidth)
EndFunc

..though almost the same as Melba's

[jchd]

Ahem, what are $X and $Y for? You're using implicit globals.

[JohnOne]

Actually meant to put the global stuff in a function but forgot.

Meh, no harm done.