Monkeybread Software - DynaPDF Manual

DynaPDF Manual - Page 72

Path Painting and Construction

Page 72 of 839

fmFillStrokeNoClose,

fmFill,

fmStroke,

fmFillStroke,

// Even-Odd Rule

fmFillEvOdd,

fmFillStrokeEvOdd,

fmFillEvOddNoClose,

fmFillStrokeEvOddNoClose,

fmNoFill,

// Special meaning see below

fmClose

// Close the path

}TPathFillMode;

The constant fmNoFill produces different results when using it with a function that produces a

closed shape like Rectangle(), Ellipse() and so on, or when using it with ClosePath() or

ClipPath().

Within ClipPath() the constant has the meaning, do neither fill or stroke the clipping path, just

create the clipping area.

Within ClosePath() the constant can be used to discard the previously drawn path. The path in

memory will be deleted and nothing will be written to the PDF file.

Within Rectangle(), Ellipse() and so on, the constant closes the path, the result is exactly the

same as if fmClose would be used.

Let us now take a look on the different path painting rules.

If we draw two rectangles in the same draw direction the result is different depending on the

used filling rule:

pdfSetFillColor(pdf, PDF_RGB(120, 120, 220));

pdfRectangle(pdf, 50.0, 50.0, 250.0, 100.0, fmNoFill);

pdfRectangle(pdf, 70.0, 70.0, 210.0, 60.0, fmNoFill);

pdfClosePath(pdf, fmFill); // Non-Zero Winding Number

Output:

Winding (fmFill):

Even Odd (fmFillEvOdd):

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