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Bitmap + Bitmap + Data = Mapfile

Started by hammerstein_02 Feb 28, 2003 at 3:47 AM 0 replies 200+ views

Original Post

Feb 28, 2003 at 3:47 AM

I have been trying to discover just how I go about saving multiple bitmaps into a file so that I can contain the tiles for my mapfile within a single file. I know that I am going to have a header specifying how many tiles and whereabouts in the file my actual map data starts, but after this I don''t know much really. I have been looking around and trying several things all week but just can''t seem to find much.. I was wondering if anybody can help me out with this information, just how abouts I go storing the bitmap in the file would be a good start. Thanks for your time =*= If things seem bad, think that they can get a whole load worse, and they don''t seem so bad anymore =*=

cbenoi1

Mar 1, 2003 at 6:42 AM

quote:
I have been trying to discover just how I go about saving multiple bitmaps into a file so that I can contain the tiles for my mapfile within a single file.

If you have an MxN tile system, then I suggest you make each tile exactly the same size (no compression) and concatenate them into a single file. This big file can be memory-mapped at runtime so to use little main memory, and the offset of the tile to load at (m,n) can be computed easily.

-cb

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