GM_ConvertCoordPixelToGroundWithOrientation – Global Mapper

Global Mapper SDK

Convert a coordinate between pixel space and the current projection. The conversion space can be either the last drawn coordinate space or the caller can provide the coordinate space to work in. You also need to supply an orientation (rotation angle) at which to do the conversion.

Note: The only time that you should need to call this function is if you want to do a coordinate conversion in a different orientation than what has been set globally with GM_SetOrientation .

Syntax

C++

Copy

GM_Error_t32 __stdcall GM_ConvertCoordPixelToGroundWithOrientation
( 
sint32                  aPixelX,        // IN: X Coord in pixel space
sint32                  aPixelY,        // IN: Y Coord in pixel space
double*                 aGroundX,       // OUT: X Coord in current projection
double*                 aGroundY,       // OUT: Y Coord in current projection
const GM_Rectangle_t*   aWorldBounds,   // IN: World bounds to convert from or NULL for last drawn
const GM_PixelRect_t*   aPixelRect,     // IN: Pixel bounds to convert from or NULL for last drawn 
double                  aOrientation    // IN Orientation of coordinate space to use (0 is north up, 90 is east up, 180 is south up, 270 is west up)
)