Transforming between image coordinates and world coordinates

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• Transforming between image coordinates and world coordinates

Transforming between image coordinates and world coordinates

Sharpmap has built-in functions to help you transform between image and world coordinates.

When the user clicks the map at a given pixel (x, y), you can translate this world coordinates using the imagetoworld method:

Sharpmap. geometries. point P = mymap. imagetoworld (new system. Drawing. pointf (x, y ));

Please note that the value is calculated based on the current zoom and center-values of the mymap map object.

If you want to do the opposite transformation, use worldtoimage:

System. Drawing. pointf P = mymap. worldtoimage (New sharpmap. geometries. Point (34.225, 175.432 ));