Table of Contents
map_GetDataPtrDescriptionRetrieve the raw handle to map memory. Function prototypevoid* CExtAPI::map_GetDataPtr(ZMAP hMap); Arguments
Return valueA null pointer if:
A valid (non-null) pointer otherwise. CommentsPixel orderingPixels are ordered in rows going east-to-west, with rows ordered south to north. To convert from x/y coordinate to memory offset, use the following formula: long offset = (x + nx * y) * PixelMemSize; …where ny is the map width (in pixels) and PixelMemSize is the size in memory of one pixel (see map_GetPixelSize). To convert from memory offsets to pixel coordinates, use the following formulae: long x = (offset/PixelMemSize)%nx; long y = (offset/PixelMemSize)/nx; Use map_GetPixel/map_SetPixel where possibleIt is recommended that, wherever possible, the map_GetPixel/map_SetPixel functions are used for accessing map data, instead of direct memory access with map_GetDataPtr. Those functions include coordinate checking and memory protection, as well has handling mip-mapping and mosaic tile cache loading/saving and automatically. Except where otherwise noted, content on this wiki is licensed under the following license:CC Attribution-Share Alike 3.0 Unported
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