Colour each pixel individually

[colafrysen]

Hi i am making a script to create a Sirpenski triangle by using the chaos method.

i got as far a creating the triangle (i know its upside down, but it seems the graphic control has its origo in the top left corner)

but it is very black&White and thus boring. i would like to make it hippie-neon-color-style by colouring each pixel depending on its X and Y coordinates.

so is there a way to colour each pixel individually?

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#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>

$HEIGHT = @DesktopHeight
$WIDTH  = @DesktopWidth
$QUALITY= InputBox ("Quality","This equals the tries made to create a point" & @CRLF & "The higher the number the better the picture" & @CRLF & "It is recomended to use a value of at least 10000." & @CRLF & "For best result on large screen use a value of 50000",10000,"",400,200)
If @error <> 0 then Exit

$GUI = GUICreate("Sierpins Fractal", $WIDTH, $HEIGHT, 0, 0, BitOR($WS_BORDER, $WS_POPUP), $WS_EX_WINDOWEDGE)
$GRAPH = GUICtrlCreateGraphic(0, 0, $WIDTH, $HEIGHT);BitOR($SS_NOTIFY,$WS_GROUP,$WS_CLIPSIBLINGS))
GUISetState(@SW_SHOW)
GUICtrlSetBkColor(-1, 0xffffff)
GUICtrlSetColor(-1, 0)

_GO()
While 1
    $Gui_action = GUIGetMsg()
    Switch $Gui_action
        Case $GUI_EVENT_CLOSE
            Exit

    EndSwitch
WEnd

Func _GO()
    GUICtrlSetColor(-1, 0)
$Y = Random(0,1)
$X = Random(0,1)
For $k=0 To $QUALITY Step 1
$N = Random(0,1)
If $N<=1/3 Then
$x *= 0.5
$y *= 0.5
EndIf
If 1/3<$N and $N<=2/3 Then
$X = 0.5*(0.5+$X)
$y = 0.5*(1+$Y)
EndIf
If 2/3<$N Then
$X = 0.5*(1+$X)
$Y = 0.5*($Y)
EndIf
$SET_X = ($X * $WIDTH)
$SET_Y = ($Y * $HEIGHT)
GUICtrlSetGraphic($GRAPH, $GUI_GR_PIXEL, $SET_X, $SET_Y)
;~ GUICtrlSetColor(-1, 0)
ToolTip ($k & @CRLF & ($k/$QUALITY)*100 & "%" )
Next
GUICtrlSetColor(-1, 0)
EndFunc

Edited May 16, 2009 by colafrysen

[monoceres]

Use GUICtrlSetGraphic(-1, $GUI_GR_COLOR, 0x000000)

.. where 0x000000 is of course the color.

However you will get a great speed boost if you do it in GDI+ instead.

[Melba23]

colafrysen,

Look at the Help file for GUICtrlSetGraphic and the $GUI_GR_COLOR type. It lets you set the drawing colour for the next $GUI_GR_* write operation.

M23

[colafrysen]

Thanks guys , I'll take a look at those

And GDI+ isn't that very difficult? (I haven't looked into it, but the name sounds dangerous)

Edited May 16, 2009 by colafrysen

[monoceres]

And GDI+ isn't that very difficult? (I haven't looked into it, but the name sounds dangerous)

Nah, the examples in the help file should give you enough info to get you started and there are like ten thousand examples posted all around the forums how to use it.

[colafrysen]

Well i got this far, and i like the result it gives me onscreen... But i am never satesfied. now i want to able to write the output to a file and create a picture that way. so i guess that GDI+ is the only way... or is there a function to write to file without GDI? i couldnt find one...

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#include <GUIConstantsEx.au3>
#include <StaticConstants.au3>
#include <WindowsConstants.au3>
#include <ListBoxConstants.au3>

$HEIGHT = @DesktopHeight
$WIDTH = @DesktopWidth
;~ $QUALITY = InputBox("Quality", "This equals the tries made to create a point" & @CRLF & "The higher the number the better the picture" & @CRLF & "It is recomended to use a value of at least 10000." & @CRLF & "For best result on large screen use a value of 50000", 10000, "", 400, 200)
If @error <> 0 Then Exit
Global $Hex_Func, $QUALITY

$GUI = GUICreate("Preferences", 250, 232, 193, 125)
$Acurracy = GUICtrlCreateInput("10000", 56, 8, 185, 21)
$Label1 = GUICtrlCreateLabel("Acurracy", 8, 8, 46, 17)
$Style = GUICtrlCreateList("", 8, 104, 233, 110, $WS_BORDER + $WS_VSCROLL)
GUICtrlSetData($Style, "Black on White|White on Black|Blue and Green|Blue and Green 2|Spectrum|RGB|Red and Blue|Random Colors", "Blue and Green")

$Inp_Width = GUICtrlCreateInput(@DesktopWidth, 56, 32, 121, 21)
$Inp_Height = GUICtrlCreateInput(@DesktopHeight, 56, 56, 121, 21)
$Label2 = GUICtrlCreateLabel("Width", 8, 32, 32, 17)
$HEIGHT = GUICtrlCreateLabel("Height", 8, 56, 35, 17)
$Label3 = GUICtrlCreateLabel("Color Style", 8, 80, 54, 17)
$GO = GUICtrlCreateButton("Triangiulize", 180, 32, 62, 46, 0)
GUISetState(@SW_SHOW)

Func _Getdata()
    Global $QUALITY = GUICtrlRead($Acurracy)
    Global $HEIGHT = GUICtrlRead($Inp_Height)
    Global $WIDTH = GUICtrlRead($Inp_Width)
    Global $Color_scheme = GUICtrlRead($Style)

    Switch $Color_scheme
        Case "Black on White"
            Global $Hex_Func = "_HEX_Black_White"
        Case "White on Black"
            Global $Hex_Func = "_HEX_White_Black"
        Case "Blue and Green"
            Global $Hex_Func = "_HEX_Blue_Green"
        Case "Blue and Green 2"
            Global $Hex_Func = "_HEX_Blue_Green_2"
        Case "Random Colors"
            Global $Hex_Func = "_HEX_Random"
        Case "Spectrum"
            Global $Hex_Func = "_HEX_Spectrum"
        Case "RGB"
            Global $Hex_Func = "_HEX_RGB"
        Case "Red and Blue"
            Global $Hex_Func = "_HEX_Red_Blue"
    EndSwitch
EndFunc   ;==>_Getdata

While 1
    $Gui_action = GUIGetMsg()
    Switch $Gui_action
        Case $GUI_EVENT_CLOSE
            Exit
        Case $GO
            _Getdata()
            _go()
    EndSwitch
WEnd

Func _GO()
    $Triangle = GUICreate("Sierpins Fractal", $WIDTH, $HEIGHT, 0, 0, BitOR($WS_BORDER, $WS_POPUP), $WS_EX_WINDOWEDGE, $GUI)
    $GRAPH = GUICtrlCreateGraphic(0, 0, $WIDTH, $HEIGHT);BitOR($SS_NOTIFY,$WS_GROUP,$WS_CLIPSIBLINGS))
    GUISetState(@SW_SHOW)
    
    Switch $Hex_Func
        Case "_HEX_Black_White"
            GUICtrlSetBkColor($GRAPH, 0xFFFFFF)
            GUICtrlSetColor(-1, 0)
        Case Else
            GUICtrlSetBkColor($GRAPH, 0x000000)
            GUICtrlSetColor(-1, 0)
    EndSwitch
    
    GUICtrlSetColor(-1, 0)
    $Y = Random(0, 1)
    $X = Random(0, 1)

    GUISetState(@SW_MINIMIZE, $Triangle)

    For $k = 0 To $QUALITY Step 1
        $N = Random(0, 1)
        If $N <= 1 / 3 Then
            $X *= 0.5
            $Y *= 0.5
        EndIf
        If 1 / 3 < $N And $N <= 2 / 3 Then
            $X = 0.5 * (0.5 + $X)
            $Y = 0.5 * (1 + $Y)
        EndIf
        If 2 / 3 < $N Then
            $X = 0.5 * (1 + $X)
            $Y = 0.5 * ($Y)
        EndIf
        $SET_X = ($X * $WIDTH)
        $SET_Y = ($Y * $HEIGHT)

        $PIX = GUICtrlSetGraphic($GRAPH, $GUI_GR_PIXEL, $SET_X, $SET_Y)
        $HEX = Call($Hex_Func, $X, $Y)
;~      $HEX = Call("_hex_dev" ,$X,$Y)
        GUICtrlSetGraphic(-1, $GUI_GR_COLOR, $HEX)
;~ GUICtrlSetColor(-1, 0)
        ToolTip($k & @CRLF & ($k / $QUALITY) * 100 & "%")
    Next
    GUICtrlSetColor(-1, 0)
    ToolTip("")
    GUISetState(@SW_MAXIMIZE, $Triangle)
EndFunc   ;==>_GO

Func _HEX_Black_White($X, $Y)
    $HEX = 0x000000
    Return $HEX
EndFunc   ;==>_HEX_Black_White

Func _HEX_White_Black($X, $Y)
    $HEX = 0xFFFFFF
    Return $HEX
EndFunc   ;==>_HEX_White_Black

Func _HEX_Random($X, $Y)
    $HEX = "0x" & Hex(Random(0, 255), 2) & Hex(Random(0, 255), 2) & Hex(Random(0, 255), 2)
    Return $HEX
EndFunc   ;==>_HEX_Random

Func _HEX_Red_Blue($X, $Y)
    $HEX_X = Round($X * 255, 0)
    $HEX_Y = Round($Y * 255, 0)
    $HEX_Z = Round(($X * 255 * $Y) / 2, 0)
;~ $HEX = Random (0,255*255*255)
    $HEX = "0x" & StringLeft(Hex($HEX_X * $HEX_Y, 4), 2) & "00" & StringRight(Hex($HEX_X * $HEX_Y, 4), 2) ;$HEX_Z,6)
;~  MsgBox(0,"",$hex)
    Return $HEX
EndFunc   ;==>_HEX_Red_Blue

Func _HEX_Blue_Green($X, $Y)
    $HEX_X = Round($X * 255, 0)
    $HEX_Y = Round($Y * 255, 0)
    $HEX_Z = Round(($X * 255 * $Y) / 2, 0)
    $HEX = "0x00" & Hex($HEX_X * $HEX_Y, 4)
    Return $HEX
EndFunc   ;==>_HEX_Blue_Green

Func _HEX_Blue_Green_2($X, $Y)
    $HEX_X = Round($X * 255, 0)
    $HEX_Y = Round($Y * 255, 0)
    $HEX_Z = Round(($X * 255 * $Y) / 2, 0)
;~ $HEX = Random (0,255*255*255)
    $HEX = "0x" & StringLeft(Hex($HEX_X * $HEX_Y, 4), 2) & Hex( $Y*255,2) & StringRight(Hex($HEX_X * $HEX_Y, 4), 2) ;$HEX_Z,6)
;~  MsgBox(0,"",$hex)
    Return $HEX
EndFunc   ;==>_HEX_DEV

Func _HEX_Spectrum($X, $Y)
    $HEX_X = Round($X * 255, 0)
    $HEX_Y = Round($Y * 255, 0)
    $HEX_Z = Round(($X * 255 * $Y) / 2, 0)
;~ $HEX = Random (0,255*255*255)
    $HEX = "0x" & Hex($x*255,2) & Hex( $Y*255,2) & StringRight(Hex($HEX_X * $HEX_Y, 4), 2) ;$HEX_Z,6)
;~  MsgBox(0,"",$hex)
    Return $HEX
EndFunc   ;==>_HEX_DEV

Func _HEX_RGB($X, $Y)
    $HEX_X = Round($X * 255, 0)
    $HEX_Y = Round($Y * 255, 0)
    $HEX_Z = Round(($X * 255 * $Y) / 2, 0)
;~ $HEX = Random (0,255*255*255)
    $HEX = "0x" & Hex($x*255,2) & Hex( $Y*255,2) & Hex(-Abs($x*255),2) ;$HEX_Z,6)
;~  MsgBox(0,"",$hex)
    Return $HEX
EndFunc   ;==>_HEX_DEV

Func _HEX_DEV($X, $Y)
    $HEX_X = Round($X * 255, 0)
    $HEX_Y = Round($Y * 255, 0)
    $HEX_Z = Round(($X * 255 * $Y) / 2, 0)
;~ $HEX = Random (0,255*255*255)
    $HEX = "0x" & Hex($x*255,2) & Hex( $Y*255,2) & Hex(-Abs($x*255),2) ;$HEX_Z,6)
;~  MsgBox(0,"",$hex)
    Return $HEX
EndFunc   ;==>_HEX_DEV

PS. i know that some functions contains things that do not fill a function, like "-Abs($x*255)", but i experimented so much with them so i left them there for easy editing later on.