Beim Segmentieren eines Bildes überspringt die Schleife eine komplette Spalte.

Question

Ich habe die Aufgabe, einen Screenshot zu segmentieren und den Screenshot wie ein Raster zu durchlaufen, wobei jeder vordefinierte Block als eigenes Bild gespeichert wird, ähnlich wie im Diagramm unten. Die tatsächliche Grid-Größe ist 10X8 Es bleibt Spalte 2 überspringen. Bitte, erziehen Sie mich auf meine logische Fehler, wie ich die If-Block 100 Mal umgeschrieben, 10 verschiedene Möglichkeiten in den letzten 3 Tagen vergebens.

 Col1 Col2 Col3 
Row1  1  2 3 
Row2  4  5 6 
Row3  7  8 9 

 
"Starting to loop image for each ball" 


    [int]$startCell = 1 
    [int]$startRow = 1 
    [int]$startColumn = 1 
    [int]$totalLoops = 81 


    [int]$startleftCoord = 293 
    [int]$starttopCoord = 90 
    [int]$startrightCoord = 385 
    [int]$startbottomCoord = 160 
    [int]$cellheight = 75 
    [int]$cellwidth = 100 
    [int]$offset = 2 


     Do 
     {   


      #get the current time and build the filename from it 
      $Time = (Get-Date) 

      [string] $FileName += "-cellshot" 
      $FileName = "$($Time.Month)" 

      $FileName += '-' 
      $FileName += "$($Time.Day)" 
      $FileName += '-' 
      $FileName += "$($Time.Year)" 
      $FileName += '-' 
      $FileName += "$($Time.Hour)" 
      $FileName += '-' 
      $FileName += "$($Time.Minute)" 
      $FileName += '-' 
      $FileName += "$($Time.Second)" 
      $FileName += '-' 
      $FileName += "$($Time.Millisecond)" 
      $FileName += '-' 
      $FileName += [string]$currentCell 

      $FileName += '.png' 

      #use join-path to add path to filename 
      [string] $FilePath = (Join-Path $Path $FileName) 



      if (!$currentCell -OR !$currentColumn -OR !$currentRow){ 
       "Initializing Globals" 

       $currentCell = $startCell 
       $currentColumn = $startColumn 
       $currentRow = $startRow 

      } 


      "Designate capture point" 

      if ($currentColumn -gt 1 -AND $currentColumn -lt 11) { 

       "Calculating side coordinates offset" 
       $newleftCoord = $startleftCoord+($currentColumn*$cellwidth) 
       $newrightCoord = $startrightCoord+($currentColumn*$cellwidth) 

      } elseif ($currentColumn -eq 11) { 

       "Resetting column coordinates " 
       $currentColumn = $startColumn 
       $newleftCoord = $startleftCoord 
       $newrightCoord = $startrightCoord 

       "Compensating for multiple rows offest" 
       $newtopCoord = $starttopCoord+($currentRow*$cellheight)+$offset 
       $newbottomCoord = $startbottomCoord+($currentRow*$cellheight)+$offset 
       $currentRow++ 


      }else{ 
       "Getting number one" 
       $newleftCoord = $startleftCoord 
       $newtopCoord = $starttopCoord 
       $newrightCoord = $startrightCoord 
       $newbottomCoord = $startbottomCoord 
      } 



      "Current Column is " + $currentColumn 
      "Current row is " + $currentRow 
      "Current cell is " + $currentCell 


      #save cellshot 
      $cellBounds = [Drawing.Rectangle]::FromLTRB($newleftCoord,$newtopCoord, $newrightCoord, $newbottomCoord) 
      $cellObject = New-Object Drawing.Bitmap $cellBounds.Width, $cellBounds.Height 
      $cellGraphics = [Drawing.Graphics]::FromImage($cellObject) 
      $cellGraphics.CopyFromScreen($cellBounds.Location, [Drawing.Point]::Empty, $cellBounds.Size) 
      $cellGraphics.Dispose()  
      $cellObject.Save($FilePath) 





      $currentColumn++ 
      $currentCell++ 


     }Until ($currentCell -eq $totalLoops) 
    Start-Sleep -Second 20 
} 




      #load required assembly 
      Add-Type -Assembly System.Windows.Forms 

      Start-Sleep -Seconds 5  

      $ballarray = @{} 

      Do { 



       #run screenshot function 
       # If ($ballarray.count -eq 20){ 
       # GenScreenshot 
       #  "Snapped screenshot - $Filename ." 
       # }else{ 
        Do{ 

        GetNewBall 
        }Until($currentCell -eq 80) 
       #} 


       #$bounds = [Drawing.Rectangle]::FromLTRB(307,129, 1060, 668) 
       #screenshot $bounds $Filepath 

       #Start-Sleep -Second 10 
      }Until($ballarray.count -eq 20) 

Answer 1

1. $currentColumn is $null 

2. "Initializing Globals" 

3. $currentColumn = 1 

4. $newleftCoord = $startleftCoord #(is 293) 

5. $currentColumn++     #(now 2) 

6. if ($currentColumn -gt 1)   #(Yes, it's 2) 

7. $newleftCoord = $startleftCoord+($currentColumn*$cellwidth) 
       #= 293 + (2*100) 
       #= 493 

       #= jump from 293 to 493 = skipped column 

Fix: Zählung von 0 statt 1.

293 + 0*100 
293 + 1*100 
293 + 2*100