Function Reference


_GDIPlus_TextureCreateIA

Creates a TextureBrush object based on an image, a defining rectangle, and a set of image properties

#include <GDIPlus.au3>
_GDIPlus_TextureCreateIA ( $hImage, $nX, $nY, $nWidth, $nHeight [, $pImageAttributes = 0] )

Parameters

$hImage Pointer to an image object
$nX Leftmost coordinate of the image portion to be used by this brush
$nY Uppermost coordinate of the image portion to be used by this brush
$nWidth Width of the brush and width of the image portion to be used by the brush
$nHeight Height of the brush and height of the image portion to be used by the brush
$pImageAttributes [optional] Pointer to an ImageAttributes object that contains properties of the image

Return Value

Success: a pointer to a new TextureBrush object.
Failure: False and sets the @error flag to non-zero, @extended may contain GPSTATUS error code ($GPID_ERR*).

Remarks

After you are done with the object, call _GDIPlus_BrushDispose() to release the object resources.

Related

_GDIPlus_BrushDispose, _GDIPlus_ImageAttributesCreate, _GDIPlus_ImageAttributesDispose

See Also

Search GdipCreateTextureIA in MSDN Library.

Example

#include <GDIPlus.au3>
#include <GUIConstantsEx.au3>
#include <Screencapture.au3>

Global $g_hHBitmap, $g_hGfxCtxt, $g_hBMP, $g_hGfx
Global $g_iTiles = 24, $g_a_hBmp_Tiles[$g_iTiles][$g_iTiles]

Example()

Func Example()
    AutoItSetOption("GUIOnEventMode", 1)

    Local $iW = 576, $iH = 576, $iTMP, $iSin = 0, $iMulti = 256 / $g_iTiles, $2Multi = 2 * $iMulti, _
            $hCtxt, $hTextureIA, $fValue, $iFrameTimer = TimerInit()

    _GDIPlus_Startup()
    $g_hHBitmap = _ScreenCapture_Capture("", 0, 0, $g_iTiles ^ 2, $g_iTiles ^ 2) ;capture the desktop and save it in memory in GDI format
    Local $hImage = _GDIPlus_BitmapCreateFromHBITMAP($g_hHBitmap) ;convert the GDI bitmap to GDI+ bitmap
    ; Local $iImgW = _GDIPlus_ImageGetWidth($hImage) ;get the width of the image
    ; Local $iImgH = _GDIPlus_ImageGetHeight($hImage) ;get the height of the image

    Local $hGUI = GUICreate("GDI+ TextureIA", $iW, $iH) ;create a GUI
    $g_hGfx = _GDIPlus_GraphicsCreateFromHWND($hGUI) ;create a graphic object for displaying GDI+ graphics
    $g_hBMP = _GDIPlus_BitmapCreateFromGraphics($iW, $iH, $g_hGfx) ;create a bitmap object based on a graphic object
    $g_hGfxCtxt = _GDIPlus_ImageGetGraphicsContext($g_hBMP) ;get the graphics context of the image / bitmap

    Local $hBitmap = _GDIPlus_BitmapCreateFromScan0($g_iTiles ^ 2, $g_iTiles ^ 2) ;create an empty bitmap (needed later for texture creating)
    Local $hContext = _GDIPlus_ImageGetGraphicsContext($hBitmap) ;get the graphic context of the image / bitmap
    _GDIPlus_GraphicsDrawImageRect($hContext, $hImage, 0, 0, $g_iTiles ^ 2, $g_iTiles ^ 2) ;copy the image into the empty bitmap
    _GDIPlus_GraphicsDispose($hContext) ;release graphic context handle
    _GDIPlus_ImageDispose($hImage) ;release image handle

    Local $tCM = _GDIPlus_ColorMatrixCreateScale(0, 0, 0) ;create and initializes a scaling color matrix (5 x 5 homogeneous matrix for a 4-space transformation) -> see http://msdn.microsoft.com/en-us/library/windows/desktop/ms533875(v=vs.85).aspx
    Local $pImgAttr = _GDIPlus_ImageAttributesCreate() ;create an image attribute object (needed for color manipulation)
    Local $fSizeInv = 1 / $g_iTiles

    ;create $g_iTiles * $g_iTiles small bitmaps (tiles) to fill it up with parts of the captured image
    For $iY = 0 To $g_iTiles - 1
        For $iX = 0 To $g_iTiles - 1
            $g_a_hBmp_Tiles[$iY][$iX] = _GDIPlus_BitmapCreateFromScan0($g_iTiles, $g_iTiles) ;create an empty bitmap
            $hCtxt = _GDIPlus_ImageGetGraphicsContext($g_a_hBmp_Tiles[$iY][$iX]) ;get the graphics context of the image / bitmap
            $fValue = BitXOR($iX, $iY) * $fSizeInv
            $tCM.m(1) = 1 - $fValue ; red
            $tCM.m(7) = $fValue ;green
            $tCM.m(19) = 0.4 ;alpha
            _GDIPlus_ImageAttributesSetColorMatrix($pImgAttr, 0, True, $tCM) ;adjust the ImageAttribute color matrix for each bitmap
            $hTextureIA = _GDIPlus_TextureCreateIA($hBitmap, $iX * $g_iTiles, $iY * $g_iTiles, $g_iTiles, $g_iTiles, $pImgAttr) ;creates a texture brush object based on an image with changed image attributes
            _GDIPlus_GraphicsFillRect($hCtxt, 0, 0, $g_iTiles, $g_iTiles, $hTextureIA) ;draw rectangle filled with manipulated tile of the image to the bitmap
            _GDIPlus_GraphicsDispose($hCtxt) ;release graphic context handle
            _GDIPlus_BrushDispose($hTextureIA) ;release texture
        Next
    Next
    _GDIPlus_ImageAttributesDispose($pImgAttr) ;releases the image attributes object

    GUISetOnEvent($GUI_EVENT_CLOSE, "_Exit", $hGUI)
    GUISetState(@SW_SHOW, $hGUI)

    While Sleep(10)
        $iSin += 25 / (1000 / TimerDiff($iFrameTimer))
        _GDIPlus_GraphicsClear($g_hGfxCtxt, 0xB0808080) ;Clears a graphic object to a specified color
        For $iX = 0 To $g_iTiles - 1
            $iTMP = 2 * $iX * $iMulti
            For $iY = 0 To $g_iTiles - 1
                ;move each tile to its new position
                _GDIPlus_GraphicsDrawImageRect($g_hGfxCtxt, $g_a_hBmp_Tiles[$iY][$iX], _ ;bitmap handle
                        25 + 15 * Sin($iY * $iMulti / 64 + $iSin) + $iTMP, _ ;x pos
                        15 * Cos($iX * $iMulti / 64 + $iSin) + 25 + $iY * $2Multi, _ ;y pos
                        $2Multi, _ ;width
                        $2Multi) ;height
            Next
        Next
        _GDIPlus_GraphicsDrawImage($g_hGfx, $g_hBMP, 0, 0) ;draw complete drawn image into GUI
        $iFrameTimer = TimerInit()
    WEnd
EndFunc   ;==>Example

Func _Exit() ;clean up resources
    _WinAPI_DeleteObject($g_hHBitmap)
    _GDIPlus_GraphicsDispose($g_hGfxCtxt)
    _GDIPlus_BitmapDispose($g_hBMP)
    _GDIPlus_GraphicsDispose($g_hGfx)
    For $iY = 0 To $g_iTiles - 1
        For $iX = 0 To $g_iTiles - 1
            _GDIPlus_BitmapDispose($g_a_hBmp_Tiles[$iY][$iX])
        Next
    Next
    _GDIPlus_Shutdown()
    Exit
EndFunc   ;==>_Exit