Table of Contents
tile_GetDataPtrDescriptionRetrieve the raw data pointer for a mosaic tile. Function prototypevoid* CExtAPI::tile_GetDataPtr(void* hTile); 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 + TileSize * y) * PixelMemSize; …where 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)%TileSize; long y = (offset/PixelMemSize)/TileSize; Use map_GetPixel/map_SetPixel where possibleIt is recommended that, wherever possible, the tile_GetPixel/tile_SetPixel functions are used for accessing tile data, instead of direct memory access with tile_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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