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Posted By
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Message
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jer
Registered
06/07/2004
Points
3
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7th July, 2004 at 00:06:49 -
I'm fairly new with MMF so maybe this has already been brought up before, but here goes..
I'm working on a little graphic editing tool and I'm trying to (manually) load .BMPs. I'm using an extension called "Binary Object" to import the color codes from the .bmp (which are stored as hex values), and it works fine until it reads any value over 7F. It just crashes.
Has anyone else ever tried to read hex data before? Is there a better/easier way to do it? or does anyone have a solution for that Binary Object extension bug?
Thanks
n/a
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Assault Andy
Administrator
I make other people create vaporware
Registered
29/07/2002
Points
5661
    
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7th July, 2004 at 03:31:57 -
Active Picture object 
Creator of Faerie Solitaire:
http://www.create-games.com/download.asp?id=7792
Also creator of ZDay20 and Dungeon Dash.
http://www.Jigxor.com
http://twitter.com/JigxorAndy
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ChrisB
Crazy?
Registered
16/08/2002
Points
5457
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7th July, 2004 at 06:28:38 -
I've never had a problem with the Binary Object. Check the size of the object after you load the BMP file. (By the way, I doubt the colour codes are stored as hex values, AFAIK they're simply sets of 3 or 4 bytes at a certain point in the file. How are you getting these colour values exactly?)
Also make sure you're checking the type of bitmap (true colour/paletted) before you try and read a palette. If you're not sure, there are plenty of websites that tell you the format of bitmaps and the offset values of all the data fields.
n/a
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Kris
Possibly Insane 
Registered
17/05/2002
Points
2017
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7th July, 2004 at 06:47:32 -
getting pixels on the binary level is a bit iffy, especially with the new[?] system they use (Bottom-to-top load order, 4 byte padding, and whatnot)
"Say you're hanging from a huge cliff at the top of mt. everest and a guy comes along and says he'll save you, and proceeds to throw religious pamphlets at you while simultaniously giving a sermon." - Dustin G
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ChrisB
Crazy?
Registered
16/08/2002
Points
5457
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7th July, 2004 at 12:12:22 -
I wouldn't say it's iffy, it's just something you have to remember if you don't want your pictures to come out upside-down
n/a
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ShadowCaster
Possibly Insane
Registered
02/01/2002
Points
2203
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7th July, 2004 at 20:31:55 -
Big/Little endian. That's a problem when using binary. I dont know what bitmaps use, but you should probably find out and make sure your program is using the same when loading data from the file.
 Mike 
"Now I guess we're... 'Path-E-Tech Management'" -Dilbert
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jer
Registered
06/07/2004
Points
3
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7th July, 2004 at 22:32:59 -
Thanks for the replies, but forget about .BMPs for a second 
My problem is more with that Binary Object extension and its Binary->ASCII filtering feature.. does anyone have any docs/examples showing how to use that properly?
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