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DarkBASIC Professional Discussion / peek screen command

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Brux
14
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Joined: 12th Oct 2011
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Posted: 19th Aug 2014 19:19
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:\'( there is a command in DBPro to detect the color of the screen coordinates
x, y (example 0.0) and then the following (1,0 / 2,0) etc. ?

for example I would write a sentence "darkbasic" at coordinates 10,10
and then detect starting at x = 0 and y = 0 the colors of the pixels on the screen
for a routine that I had already 'created with AMOSPro
was the command 'peek screen x,y' or something like that
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Van B
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23
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Joined: 8th Oct 2002
Location: Sunnyvale
Posted: 21st Aug 2014 10:06
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The command your looking for is POINT(x,y) - this will return the RGB value, so to work out the red green and blue components...

c=POINT(x,y)
r=rgbr(c)
g=rgbg(c)
b=rgbb(c)

It's slow, but I guess it depends on how you use it. The faster option is usually to grab the screen as an image then reference it directly with a memblock or plugin, I think POINT needs to update the screen each time it's used, so it can cause real problems if used in your main loop.

I am the one who knocks...
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Green Gandalf
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21
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Joined: 3rd Jan 2005
Playing: Malevolence:Sword of Ahkranox, Skyrim, Civ6.
Posted: 21st Aug 2014 12:06
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Quote: "I think POINT needs to update the screen each time it's used"


Surely not?



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Libervurto
20
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Joined: 30th Jun 2006
Location: On Toast
Posted: 22nd Aug 2014 08:21
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Quote: "The faster option is usually to grab the screen as an image then reference it directly with a memblock"

Yes, MUCH faster. Memblocks are a bit tricky for newbies though. I have written some functions to make this easier (for DBC but should work with DBP) I will dig them out if asked.

Also I am thinking maybe locking pixels will help the speed?

Formerly OBese87.
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