convert WoW Coordinates to image coordiantes

[chaisar]

Hi I want to write a small tool which allows users to load a Crawlerbot/Honorbuddy profile and see the coordinates on a map. I am using a PictureBox )in a Scrollcontainer so I am able to load the continent image and scroll/zoom on it.

I am really, really bad in math but I thought the following code should work:

Private Const TILE_SIZE As Double = 533.0 + (1 / 3)
Function CalcWoWPosToGuiPos(ByVal WoWMapX As Double, ByVal WoWMapY As Double) As Point
        Dim relY As Double = (WoWMapX + 32.0 * TILE_SIZE ) / (64 * TILE_SIZE )
        Dim relX As Double = (WoWMapY + 32.0 * TILE_SIZE ) / (64 * TILE_SIZE )
        CalcWoWPosToGuiPos.X = = PictureBox.Width * relX
        CalcWoWPosToGuiPos.Y = PictureBox.Height * relY
End Function

As you see I already googled and learned something about the WoW coordinates.

But this code doesn't work. And I really have no idea how to solve this (really simple?!) problem. Any help would be great!

Edit: here is an picture. yellow is the position I am (3744.927, 5624.042 on the map it should be 117,299) red is the position the function returns: 678,592

[kantaki]

WC: 3744.927, 5624.042
MC: 117,299

3744/117 = 32
5624/299 = 18

32:18 -> Same ratio as 16:9

Hard to say what the correct formula is to calculate the map coordinates. I would need more input. But for now try to divide x with 32 and y with 18. Otherwise post at least 5 correct world and map coordinates

Also this problem is called: "Viewport transformation"