GM_ConvertCoordGroundToPixelDouble

Marius Lazar

September 02, 2026 13:40 Updated

Global Mapper SDK

Convert a coordinate between the current projection and a pixel coordinate. The conversion space can be either the last drawn coordinate space or the caller can provide the coordinate space to work in.

Syntax

C++

Copy

GM_Error_t32 __stdcall GM_ConvertCoordGroundToPixelDouble
( 
double                  aGroundX,       // IN: X Coord in current projection
double                  aGroundY,       // IN: Y Coord in current projection
double*                 aPixelX,        // OUT: X Coord in pixel space
double*                 aPixelY,        // OUT: Y Coord in pixel space
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 
);