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Topic: Android Floodfill (Read 1267 times)
GreatDayDan
New Member
Posts: 22
It's a Great! day!
Android Floodfill
«
on:
July 10, 2019, 05:27:54 pm »
Does Lazarus/FPC on Android have a graphics floodfill method?
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jmpessoa
Hero Member
Posts: 2301
Re: Android Floodfill
«
Reply #1 on:
July 10, 2019, 09:24:13 pm »
LAMW? No.
But, we can try implement it based on:
https://stackoverflow.com/questions/16968412/how-to-use-flood-fill-algorithm-in-android
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Lamw: Lazarus Android Module Wizard
https://github.com/jmpessoa/lazandroidmodulewizard
winni
Hero Member
Posts: 3197
Re: Android Floodfill
«
Reply #2 on:
July 10, 2019, 10:04:43 pm »
You can find a very good pascal floodfill in BGRAbitmap Package; there in the unit BGRADefaultBitmap. It is called
procedure TBGRADefaultBitmap.ParallelFloodFill
and avoids recursion with the related problems.
Look at line 4507 ff
Winni
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GreatDayDan
New Member
Posts: 22
It's a Great! day!
Re: Android Floodfill
«
Reply #3 on:
July 11, 2019, 09:30:50 pm »
Thanks for the tip.
Now all I have to do is learn how to use it. My goal is to run the app on my wife's tablet.
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circular
Hero Member
Posts: 4220
Re: Android Floodfill
«
Reply #4 on:
July 11, 2019, 09:58:19 pm »
By the way, the basic method is FloodFill.
ParallelFloodFill fills another bitmap according to the first one. This is useful for example if you want to make a mask of an area while leaving the original image unchanged.
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Conscience is the debugger of the mind
GreatDayDan
New Member
Posts: 22
It's a Great! day!
Re: Android Floodfill
«
Reply #5 on:
July 11, 2019, 10:00:30 pm »
Coolness.
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