Example usage for com.itextpdf.text.pdf.parser BezierCurve BezierCurve

Introduction

In this page you can find the example usage for com.itextpdf.text.pdf.parser BezierCurve BezierCurve.

Prototype

public BezierCurve(List<Point2D> controlPoints) 

Source Link

Document

Constructs new bezier curve.

Usage

From source file:mkl.testarea.itext5.pdfcleanup.PdfCleanUpRegionFilter.java

License:Open Source License

private static BezierCurve[] approximateCircle(Point2D center, double radius) {
    // The circle is split into 4 sectors. Arc of each sector
    // is approximated  with bezier curve separately.
    BezierCurve[] approximation = new BezierCurve[4];
    double x = center.getX();
    double y = center.getY();

    approximation[0] = new BezierCurve(Arrays.asList((Point2D) new Point2D.Double(x, y + radius),
            new Point2D.Double(x + radius * circleApproximationConst, y + radius),
            new Point2D.Double(x + radius, y + radius * circleApproximationConst),
            new Point2D.Double(x + radius, y)));

    approximation[1] = new BezierCurve(Arrays.asList((Point2D) new Point2D.Double(x + radius, y),
            new Point2D.Double(x + radius, y - radius * circleApproximationConst),
            new Point2D.Double(x + radius * circleApproximationConst, y - radius),
            new Point2D.Double(x, y - radius)));

    approximation[2] = new BezierCurve(Arrays.asList((Point2D) new Point2D.Double(x, y - radius),
            new Point2D.Double(x - radius * circleApproximationConst, y - radius),
            new Point2D.Double(x - radius, y - radius * circleApproximationConst),
            new Point2D.Double(x - radius, y)));

    approximation[3] = new BezierCurve(Arrays.asList((Point2D) new Point2D.Double(x - radius, y),
            new Point2D.Double(x - radius, y + radius * circleApproximationConst),
            new Point2D.Double(x - radius * circleApproximationConst, y + radius),
            new Point2D.Double(x, y + radius)));

    return approximation;
}

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