Function Reference


_GDIPlus_PathAddClosedCurve2

Adds a closed cardinal spline to a path

#include <GDIPlus.au3>
_GDIPlus_PathAddClosedCurve2 ( $hPath, $aPoints [, $nTension = 0.5] )

Parameters

$hPath Pointer to a GraphicsPath object
$aPoints Array of points that define the cardinal spline:
    [0][0] - Number of points
    [1][0] - Point 1 X position
    [1][1] - Point 1 Y position
    [2][0] - Point 2 X position
    [2][1] - Point 2 Y position
    [n][0] - Point n X position
    [n][1] - Point n Y position
$nTension [optional] Nonnegative real number that controls the length of the curve and how the curve bends.
A value of 0 specifies that the spline is a sequence of straight lines.
As the value increases, the curve becomes fuller.

Return Value

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

Remarks

A cardinal spline is a curve that passes through each point in the array.

Related

_GDIPlus_PathAddClosedCurve

See Also

Search GdipAddPathClosedCurve2 in MSDN Library.

Example

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

Example()

Func Example()
    Local $hGUI, $hGraphic, $hBrush, $hPen, $hPen2, $hPath

    ; Create GUI
    $hGUI = GUICreate("GDI+", 800, 300)
    GUISetState(@SW_SHOW)

    _GDIPlus_Startup()
    $hGraphic = _GDIPlus_GraphicsCreateFromHWND($hGUI) ;Create a graphics object from a window handle
    _GDIPlus_GraphicsSetSmoothingMode($hGraphic, $GDIP_SMOOTHINGMODE_HIGHQUALITY) ;Sets the graphics object rendering quality (antialiasing)
    _GDIPlus_GraphicsClear($hGraphic, 0xFFFFFFFF)

    $hBrush = _GDIPlus_BrushCreateSolid(0x7F8800AA)
    $hPen = _GDIPlus_PenCreate(0xFF8800AA, 2)
    $hPen2 = _GDIPlus_PenCreate(0xFFFF0000, 2)

    Local $aPoints[5][2] = [[4]]
    $aPoints[1][0] = 10
    $aPoints[1][1] = 70
    $aPoints[2][0] = 60
    $aPoints[2][1] = 50
    $aPoints[3][0] = 110
    $aPoints[3][1] = 120
    $aPoints[4][0] = 160
    $aPoints[4][1] = 80

    $hPath = _GDIPlus_PathCreate() ;Create new path object

    _GDIPlus_GraphicsDrawString($hGraphic, "Curve", $aPoints[1][0], 20)
    _GDIPlus_PathAddCurve($hPath, $aPoints)
    For $i = 1 To $aPoints[0][0]
        _GDIPlus_GraphicsDrawRect($hGraphic, $aPoints[$i][0] - 4, $aPoints[$i][1] - 4, 8, 8, $hPen2)
        $aPoints[$i][0] += 200
    Next

    _GDIPlus_GraphicsDrawString($hGraphic, "ClosedCurve", $aPoints[1][0], 20)
    _GDIPlus_PathAddClosedCurve($hPath, $aPoints)
    For $i = 1 To $aPoints[0][0]
        _GDIPlus_GraphicsDrawRect($hGraphic, $aPoints[$i][0] - 4, $aPoints[$i][1] - 4, 8, 8, $hPen2)
        $aPoints[$i][0] += 200
    Next

    _GDIPlus_GraphicsDrawString($hGraphic, "Curve2 tension = 0.8", $aPoints[1][0], 20)
    _GDIPlus_PathAddCurve2($hPath, $aPoints, 0.8)
    For $i = 1 To $aPoints[0][0]
        _GDIPlus_GraphicsDrawRect($hGraphic, $aPoints[$i][0] - 4, $aPoints[$i][1] - 4, 8, 8, $hPen2)
        $aPoints[$i][0] += 200
    Next

    _GDIPlus_GraphicsDrawString($hGraphic, "ClosedCurve2 tension = 0.8", $aPoints[1][0], 20)
    _GDIPlus_PathAddClosedCurve2($hPath, $aPoints, 0.8)
    For $i = 1 To $aPoints[0][0]
        _GDIPlus_GraphicsDrawRect($hGraphic, $aPoints[$i][0] - 4, $aPoints[$i][1] - 4, 8, 8, $hPen2)
        $aPoints[$i][0] -= 500
        $aPoints[$i][1] += 140
    Next

    _GDIPlus_GraphicsDrawString($hGraphic, "Curve2 tension = 0", $aPoints[1][0], 160)
    _GDIPlus_PathAddCurve2($hPath, $aPoints, 0)
    For $i = 1 To $aPoints[0][0]
        _GDIPlus_GraphicsDrawRect($hGraphic, $aPoints[$i][0] - 4, $aPoints[$i][1] - 4, 8, 8, $hPen2)
        $aPoints[$i][0] += 200
    Next

    _GDIPlus_GraphicsDrawString($hGraphic, "ClosedCurve2 tension = 0", $aPoints[1][0], 160)
    _GDIPlus_PathAddClosedCurve2($hPath, $aPoints, 0)
    For $i = 1 To $aPoints[0][0]
        _GDIPlus_GraphicsDrawRect($hGraphic, $aPoints[$i][0] - 4, $aPoints[$i][1] - 4, 8, 8, $hPen2)
        $aPoints[$i][0] += 200
    Next

    _GDIPlus_GraphicsDrawString($hGraphic, "Polygon", $aPoints[1][0], 160)
    _GDIPlus_PathAddPolygon($hPath, $aPoints)
    For $i = 1 To $aPoints[0][0]
        _GDIPlus_GraphicsDrawRect($hGraphic, $aPoints[$i][0] - 4, $aPoints[$i][1] - 4, 8, 8, $hPen2)
    Next

    _GDIPlus_GraphicsFillPath($hGraphic, $hPath, $hBrush) ;Fill path to graphics handle (GUI)
    _GDIPlus_GraphicsDrawPath($hGraphic, $hPath, $hPen) ;Draw path to graphics handle (GUI)

    ; Loop until the user exits.
    Do
    Until GUIGetMsg() = $GUI_EVENT_CLOSE

    ; Clean up resources
    _GDIPlus_PathDispose($hPath)
    _GDIPlus_BrushDispose($hBrush)
    _GDIPlus_PenDispose($hPen)
    _GDIPlus_PenDispose($hPen2)
    _GDIPlus_GraphicsDispose($hGraphic)
    _GDIPlus_Shutdown()
EndFunc   ;==>Example