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DarkBASIC Discussion / point() :S? or maybe something else? color of pixel..

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The Dream Keeper!
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Posted: 14th Feb 2004 13:03
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Hey all,

I know.. my title is confusing. Let me explain.. i'm making some kind of convert program.. but then i have to know what color a pixel is.. so the program can store that in a color# but.. i get wierd color numbers. I don't get RGB or something. But things like: 89028394894 :S. And i don't get that. Does anyone know how you can get the red, green and blue value of a pixel? a part from each other?

Thanks for all the help!

The Dream Keeper!

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Emperor Baal
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Joined: 1st Dec 2003
Location: The Netherlands - Oudenbosch
Posted: 14th Feb 2004 14:14
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red = rgbr(point(x,y))
green = rgbg(point(x,y))
blue = rgbb(point(x,y))

that should do it


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The Dream Keeper!
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Posted: 14th Feb 2004 21:37 Edited at: 14th Feb 2004 21:47
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Aha.. thnx. Got that! But another question. I want to check the color of an pixel on a bitmap. But if you have the bitmap at 0,0 for example and you read that pixel. It doesn't read the bitmap but what's under that. I tried the set current bitmap 1. But it didn't work. Anyone got a solution?

Already found the solution. Thanks though.

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BearCDPOLD
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Location: AZ,USA
Posted: 15th Feb 2004 06:40
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Could you post some code, there could be so many influences on bugs in a program, you could find a problem on one part, then find the solution twenty lines up.

Crazy Donut Productions
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The Dream Keeper!
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Posted: 15th Feb 2004 14:33
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Here is my code.. i got it running with an bitmap.. but it is very slow (converting and stuff).. and it does only one line. But you will see that. I hope you guys can help me make it faster and better.. and offcourse solve the big problem..

Thanks for any help,

The Dream Keeper!

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Mentor
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Posted: 15th Feb 2004 16:01
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try the lockpixels command before you play with the image and then unlock pixels afterwards, it`s not how you are meant to do it in the manual, but it works fine here.

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The Dream Keeper!
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Posted: 15th Feb 2004 21:06
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allright.. but what is the lock pixels command. In the index there isn't any command called "lock pixels".

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Posted: 15th Feb 2004 23:22
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doh! thats Pro , I got my versions muddled, sorry! , if you have memblocks in your version of DB then make a memblock of the image, do the alterations to the memblock then make it back into an image, thats not so easy since you have to know how the bitmap is stored internaly ie: 32 or 24 bit etc, but you should be able to work this out from the screenmode you are using, cheers.

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