Examples with PolyFillType com.itextpdf.kernel.pdf.canvas.parser.clipper.IClipper.PolyFillType used on opensource projects

Example 1 with PolyFillType

use of com.itextpdf.kernel.pdf.canvas.parser.clipper.IClipper.PolyFillType in project i7j-pdfsweep by itext.

the class PdfCleanUpFilter method filterFillPath.

/**
 * Note: this method will close all unclosed subpaths of the passed path.
 *
 * @param path        the PathRenderInfo object to be filtered.
 * @param ctm         a {@link com.itextpdf.kernel.geom.Path} transformation matrix.
 * @param fillingRule If the subpath is contour, pass any value.
 * @return a filtered {@link com.itextpdf.kernel.geom.Path} object.
 */
private com.itextpdf.kernel.geom.Path filterFillPath(com.itextpdf.kernel.geom.Path path, Matrix ctm, int fillingRule) {
    path.closeAllSubpaths();
    IClipper clipper = new DefaultClipper();
    ClipperBridge.addPath(clipper, path, PolyType.SUBJECT);
    for (Rectangle rectangle : regions) {
        try {
            Point[] transfRectVertices = transformPoints(ctm, true, getRectangleVertices(rectangle));
            ClipperBridge.addPolygonToClipper(clipper, transfRectVertices, PolyType.CLIP);
        } catch (PdfException e) {
            if (!(e.getCause() instanceof NoninvertibleTransformException)) {
                throw e;
            } else {
                logger.error(MessageFormatUtil.format(CleanUpLogMessageConstant.FAILED_TO_PROCESS_A_TRANSFORMATION_MATRIX));
            }
        }
    }
    PolyFillType fillType = PolyFillType.NON_ZERO;
    if (fillingRule == PdfCanvasConstants.FillingRule.EVEN_ODD) {
        fillType = PolyFillType.EVEN_ODD;
    }
    PolyTree resultTree = new PolyTree();
    clipper.execute(ClipType.DIFFERENCE, resultTree, fillType, PolyFillType.NON_ZERO);
    return ClipperBridge.convertToPath(resultTree);
}