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jaberwacky

_PixelSearchCenter()

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#1 ·  Posted (edited)

Hello. I think that the parameters for PixelSearch() can be somewhat counter intuitive. So I wrapped PixelSearch such that all you have to do is to specify the center coordinates and the total height of the PixelSearch square.

; #FUNCTION# ===============================================================================
; Name...........: _PixelSearchCenter
; Description ...: This UDF wraps PixelSearch in order to allow users to specify the center -
;                  coordinates of a PixelSearch square and the height of the square instead -
;                  of the slightly confusing: 
;                          "left coordinate of rectangle." 
;                          "top coordinate of rectangle." 
;                          "right coordinate of rectangle." 
;                          "bottom coordinate of rectangle."
;                   This is more intuitive to those of us who are new to AutoIt and/or computer programming in general.
; Syntax.........: _PixelSearchCenter($iX , $iY , $iHeight , $iColor [, $iShadeVariation = "" [, $iStep = "" [, $sHWND = "" ]]])
; Parameters ....: $iCenterX        -- X coordinate of PixelSearch center
;                  $iCenterY        -- Y coordinate of PixelSearch center
;                  $iHeight         -- The total height of the PixelSearch square.
;                  $iColor          -- "Colour value of pixel to find (in decimal or hex)."
;                  $iShadeVariation -- "[optional] A number between 0 and 255 to indicate the allowed number - 
;                                      of shades of variation of the red, green, and blue components of the -
;                                      colour. Default is 0 (exact match)."
;                  $iStep           -- "[optional] Instead of searching each pixel use a value larger than 1 to skip pixels (for speed). -
;                                        E.g. A value of 2 will only check every other pixel. Default is 1."
;                  $sHWND           -- "[optional] Window handle to be used."
; Return values .: Success - The first set of coordinates of the desired color.
;                  Failure - Returns 0 and Sets @Error:
;                  |0 - No error.
;                  |1 - Color was not found.
;                  |2 - Coordinates must be at least one pixel away from the screen edge.
;                  |3 - $iShadeVariation out of bounds. ( 0 -- 255 )
;                  |4 - $iHeight was out of bounds of the users screen.  Resized to stay within screen edge.
; Author ........: Matthew R. G.
; Modified.......:
; Remarks .......: All quotes are from the helpfile.  I got this idea from a 'Processing' language tutorial. (http://www.processing.org/)
; Related .......: PixelSearch
; Link ..........; (http://www.autoitscript.com/forum/index.php?showtopic=87319)
; Example .......; Yes
; ==========================================================================================

#include-Once

Local $iColor
Local $iHalf
Local $iHeight
Local $iShadeVariation
Local $iStep
Local $iXYCoord[ 2 ]
Local $iCenterX
Local $iCenterY
Local $iLeft
Local $iTop
Local $iRight
Local $iBottom
Local $sHWND

Func _PixelSearchCenter($iCenterX,$iCenterY,$iHeight,$iColor,$iShadeVariation="",$iStep="",$sHWND="")
    
    $iHalf = $iHeight / 2
    
    If $iCenterX = 0 And $iCenterY = 0 Then
        Return SetError( 2 )
    ElseIf $iShadeVariation > 255 Then
        Return SetError( 3 )
    ElseIf $iHalf > $iCenterX Then 
        Return SetError( 4 )
    EndIf
    
    $iLeft   = $iCenterX - $iHalf
    $iTop    = $iCenterY - $iHalf
    $iRight  = $iCenterX + $iHalf
    $iBottom = $iCenterY + $iHalf
    
    $iXYCoord = PixelSearch($iLeft,$iTop,$iRight,$iBottom,$iColor,$iShadeVariation,$iStep,$sHWND)
    
    If @error = 1 Then
        Return SetError( 1 )
    ElseIf @error = 0 Then
        Return $iXYCoord    
    EndIf
    
EndFuncoÝ÷ Øw«z+²x©¥ëh}ÊzØZ´¬yÛhµë-¶V®¶­sb6æ6ÇVFRfÇCµõVÅ6V&66VçFW"æS2fwC° ¤FÒb33c·FVײ"ÒÒ²ÂÐ ¢b33c·FV×ÒõVÅ6V&66VçFW" ¤bW'&÷"ÒFVà¢6öç6öÆUw&FRb33c·FV׳ÒfײgV÷C²ÂgV÷C²fײb33c·FV׳Òfײ5$Äb¤VÇ6TbW'&÷"ÒFVà¢6öç6öÆUw&FRgV÷C´æ÷Bf÷VæBb333²gV÷C²fײ5$Äb¤VÇ6TbW'&÷"Ò"FVà¢6öç6öÆUw&FRgV÷Cµ7V&R×W7B&RBÆV7BöæRVÂg&öÒFRVFvRâgV÷C²fײ5$Äb¤VÇ6TbW'&÷"Ò2FVà¢6öç6öÆUw&FRgV÷C²b33c¶6FUf&Föâ÷WBöb&÷VæG2âÒÒ#SRgV÷C²fײ5$Äb¤VÇ6TbW'&÷"ÒBFVà¢6öç6öÆUw&FRgV÷C²b33c¶VvBv2÷WBöb&÷VæG2öbFRW6W'267&VVââgV÷C²fײ5$Äb¤VæD` ¤W@

Hope ya'll find it useful!

Edited by jaberwocky6669

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#2 ·  Posted (edited)

Ok, latest version now allows user to specify a width value.

#cs
#FUNCTION# ================================================================================
 Name ....: _PixelSearchCenter
 Desc. ...: This UDF wraps PixelSearch in order to allow users to specify the center      -
            coordinates and the height and width of the rectangle instead of the slightly _
            confusing: 
                        "left coordinate of rectangle." 
                        "top coordinate of rectangle." 
                        "right coordinate of rectangle." 
                        "bottom coordinate of rectangle."
            This is more intuitive to those of us who are new to AutoIt and/or computer   -
            programming in general.
 Syntax ..: _PixelSearchCenter($iX , $iY , $iHeight , $iWidth , $iColor [ , $iShadeVariation = "" [ , $iStep = "" [ , $sHWND = "" ]]])
 Params ..: $iCenterX        -- X coordinate of PixelSearch center
            $iCenterY        -- Y coordinate of PixelSearch center
            $iHeight         -- The total height of the PixelSearch rectangle.
            $iWidth          -- The total width of the PixelSearch rectangle.
            $iColor          -- "Colour value of pixel to find (in decimal or hex)."
            $iShadeVariation -- "[optional] A number between 0 and 255 to indicate the    -
                                allowed number of shades of variation of the red, green,  -
                                and blue components of the colour. 
                                Default is 0 (exact match)."
            $iStep           -- "[optional] Instead of searching each pixel use a value   -
                                larger than 1 to skip pixels (for speed). E.g. A value of -
                                2 will only check every other pixel. Default is 1."
            $sHWND           -- "[optional] Window handle to be used."
 RetVals ..: Success - The first set of coordinates of the desired color.
             Failure - Returns SetError():
              |1 - Color was not found.
              |2 - Coordinates must be at least one pixel away from the screen edge.
              |3 - $iShadeVariation out of bounds. ( 0 -- 255 )
              |4 - $iHeight was out of bounds of the users screen. 
              |5 - $iWidth was out of bounds of the users screen.
 Author ..: Matthew R. Goude
 Remarks .: All quotes are from the helpfile. 
            I got this idea from a 'Processing' language tutorial. 
 Related .: PixelSearch
 Links ...; www.autoitscript.com/forum/index.php?showtopic=87319
            www.autoitscript.com/forum/index.php?showtopic=88008
            www.processing.org/learning/tutorials/basics/
 Example .; Yes
 ==========================================================================================
#ce

#include-Once

Local $iColor
Local $iHalfHeight
Local $iHalfWidth
Local $iHeight
Local $iShadeVariation
Local $iStep
Local $iXYCoord[ 2 ]
Local $iCenterX
Local $iCenterY
Local $iLeft
Local $iTop
Local $iRight
Local $iBottom
Local $sHWND

Func _PixelSearchCenter( $iCenterX             , _
                         $iCenterY             , _
                         $iHeight              , _
                         $iWidth               , _
                         $iColor               , _
                         $iShadeVariation = "" , _
                         $iStep = ""           , _
                         $sHWND = "" )
    
    $iHalfHeight = $iHeight / 2
        $iHalfWidth = $iWidth / 2
    
    If $iCenterX = 0 And $iCenterY = 0 Then 
        Return SetError( 2 )
    ElseIf $iShadeVariation > 255 Then
        Return SetError( 3 )
    ElseIf $iHalfHeight > $iCenterX Then 
        Return SetError( 4 )
    ElseIf $iHalfWidth > $iCenterY Then 
        Return SetError( 5 )
    EndIf
    
    $iLeft   = $iCenterX - $iHalfHeight
    $iTop    = $iCenterY - $iHalfHeight
    $iRight  = $iCenterX + $iHalfWidth
    $iBottom = $iCenterY + $iHalfWidth
    
    $iXYCoord = PixelSearch( $iLeft           , _
                             $iTop            , _
                             $iRight          , _
                             $iBottom         , _
                             $iColor          , _
                             $iShadeVariation , _
                             $iStep           , _
                             $sHWND  )
    
    If @error = 1 Then
        Return SetError( 1 )
    ElseIf @error = 0 Then
        Return $iXYCoord    
    EndIf
    
EndFunc
Edited by jaberwocky6669

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