FillPathOdd Method (GdPicturePDF)

In This Topic

Fills the current path, defined within a currently selected page of the loaded PDF document, using the even-odd rule (an alternative to the nonzero winding number rule) to determine the region to fill. In other words, this method sets the path-painting operator "f*". Any sub-paths, that are open, are implicitly closed before being filled (see PDF Reference, Section "Path-Painting Operators").By the definition the "f*" Operator uses the current non-stroking color, previously defined by the SetFillColor(Byte,Byte,Byte) method, to paint the entire region enclosed by the current path.

Syntax

Visual Basic
C#
Delphi
JScript
Managed Extensions for C++
C++/CLI

'Declaration
 
Public Function FillPathOdd() As GdPictureStatus

public GdPictureStatus FillPathOdd()

public function FillPathOdd(): GdPictureStatus;

public function FillPathOdd() : GdPictureStatus;

public: GdPictureStatus FillPathOdd();

public:
GdPictureStatus FillPathOdd();

Return Value

A member of the GdPictureStatus enumeration. If the method has been successfully followed, then the return value is GdPictureStatus.OK.

We strongly recommend always checking this status first.

Remarks

This method is only allowed for use with non-encrypted documents.

You also need to be aware that the path-painting operators end a path object, so once a path has been painted, means filled, it is no longer defined.

For further assistance, please see the Path Construction and Painting section and the Graphics State section of the GdPicturePDF class in the Reference Guide, as well as the Path-Painting Operators section in the PDF Reference.

Example

How to fill the current path using both rules to determine the region to fill.

VB.NET
C#

Dim caption As String = "Example: FillPathOdd"
Dim gdpicturePDF As New GdPicturePDF()
Dim status As GdPictureStatus = gdpicturePDF.NewPDF()
If status = GdPictureStatus.OK Then
    gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft)
    gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitMillimeter)
    If (gdpicturePDF.NewPage(210, 297) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.SetLineWidth(2) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.SetFillColor(0, 0, 255) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.BeginPath(200, 40) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(20, 90) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(200, 70) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(20, 40) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(200, 90) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.FillPath() = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.BeginPath(200, 110) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(20, 160) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(200, 140) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(20, 110) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.AddLineToPath(200, 160) = GdPictureStatus.OK) AndAlso
       (gdpicturePDF.FillPathOdd() = GdPictureStatus.OK) Then
        status = gdpicturePDF.SaveToFile("test_FillPathOdd.pdf")
        If status = GdPictureStatus.OK Then
            MessageBox.Show("The example has been followed successfully and the file has been saved.", caption)
        Else
            MessageBox.Show("The example has been followed successfully, but the file can't be saved. Status: " + status.ToString(), caption)
        End If
    Else
        MessageBox.Show("The example has not been followed successfully." + vbCrLf + "The last known status is " + gdpicturePDF.GetStat().ToString(), caption)
    End If
Else
    MessageBox.Show("The NewPDF() method has failed with the status: " + status.ToString(), caption)
End If
gdpicturePDF.Dispose()

string caption = "Example: FillPathOdd";
GdPicturePDF gdpicturePDF = new GdPicturePDF();
GdPictureStatus status = gdpicturePDF.NewPDF();
if (status == GdPictureStatus.OK)
{
    gdpicturePDF.SetOrigin(PdfOrigin.PdfOriginTopLeft);
    gdpicturePDF.SetMeasurementUnit(PdfMeasurementUnit.PdfMeasurementUnitMillimeter);
    if ((gdpicturePDF.NewPage(210, 297) == GdPictureStatus.OK) &&
        (gdpicturePDF.SetLineWidth(2) == GdPictureStatus.OK) &&
        (gdpicturePDF.SetFillColor(0, 0, 255) == GdPictureStatus.OK) &&
        (gdpicturePDF.BeginPath(200, 40) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(20, 90) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(200, 70) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(20, 40) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(200, 90) == GdPictureStatus.OK) &&
        (gdpicturePDF.FillPath() == GdPictureStatus.OK) &&
        (gdpicturePDF.BeginPath(200, 110) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(20, 160) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(200, 140) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(20, 110) == GdPictureStatus.OK) &&
        (gdpicturePDF.AddLineToPath(200, 160) == GdPictureStatus.OK) &&
        (gdpicturePDF.FillPathOdd() == GdPictureStatus.OK))
    {
        status = gdpicturePDF.SaveToFile("test_FillPathOdd.pdf");
        if (status == GdPictureStatus.OK)
            MessageBox.Show("The example has been followed successfully and the file has been saved.", caption);
        else
            MessageBox.Show("The example has been followed successfully, but the file can't be saved. Status: " + status.ToString(), caption);
    }
    else
        MessageBox.Show("The example has not been followed successfully.\nThe last known status is " + gdpicturePDF.GetStat().ToString(), caption);
}
else
    MessageBox.Show("The NewPDF() method has failed with the status: " + status.ToString(), caption);
gdpicturePDF.Dispose();

Reference

GdPicturePDF Class
GdPicturePDF Members
SetFillColor(Byte,Byte,Byte) Method
BeginPath Method
ClosePath Method
FillPath Method
FillAndStrokePath Method
CloseAndFillAndStrokePath Method