Re: How to get pixel color from 3d application

[JuR]

Hi it's me again :P I found a way how to get that working. at this moment code is very primitive, but it do what i want. ofc ill post the code below, because maybe someone may need it, and will modify it by himself. This is my first week with perl (and i don't know any other programming language). I have to say it again it's VERY PRIMITIVE JUST FOR TEST. GOTO made code slower. Just put it here, to check if it's works.

use Imager;
use Imager::Screenshot 'screenshot';
use Win32::GuiTest qw(FindWindowLike GetWindowText 
    SetForegroundWindow SendKeys);
    
    START:
my $img = screenshot(); #make screenshot
$img->write(file => 'screenshot.png', type => 'png' ) || 
     print "Failed: ", $img->{ERRSTR} , "\n"; #write a new sreenshot o
+ver old one 
                                              #or send error
$img=Imager->new();                              #make new image 
 $img->read(file=>'screenshot.png',type=>'png'); #read from fresh scre
+enshot
 $color = $img->getpixel(x=>68, y=>58);          #get pixel from coord
+inate x,y
 
 $img1=Imager->new();                            #make new image
 $img1->read(file=>'orginal.png',type=>'png');   #1.read from orginal 
+pcitrue i have made
 $color1 = $img1->getpixel(x=>68, y=>58);         #2. before to compar
+e element from
 $keys = (22);                                   #3. the same coordina
+tes, so when 
                                                 #4. window is change 
+on any diferent color
                                                 #5. program show doin
+ code (else)
  
  if ($color->equals(other=>$color1)) { #if color is the same
    print "ok\n"                         #print ok, do nothing.
  }
  else {                                  #else press key 22 from $key
+s 
  SendKeys ($keys, 100)
  }
  sleep 1;                                 #sleep for one sec
  goto START;                              #go back and do compare aga
+in with new screenshot

[tonyc]

You can improve performance by only fetching a subset of the screen with screenshot:

my $img = screenshot(left => 68, right => 69, top => 58, bottom => 59);

You're also writing the screenshot to a file, then reading the same image back in again, which is a waste.

[JuR]

Good idea, ill try to modify the code, thanks. If someone have a suggestions, please post it :) Thanks !