Examples of ae.sun.java2d.pipe.SpanIterator

ae.sun.java2d.pipe.SpanIterator
This interface defines a general method for iterating through the rectangular "spans" that represent the interior of a filled path.
There can be many kinds of span iterators used in the rendering pipeline, the most basic being an iterator that scan converts a path defined by any PathIterator, or an nested iterator which intersects another iterator's spans with a clip region. Other iterators can be created for scan converting some of the primitive shapes more explicitly for speed or quality. @author Jim Graham


            if (clip == null) {
                clip = Region.getInstanceXYWH(dstx, dsty, width, height);
            }
            int span[] = {dstx, dsty, dstx+width, dsty+height};
            SpanIterator si = clip.getSpanIterator(span);
            srcx -= dstx;
            srcy -= dsty;
            while (si.nextSpan(span)) {
                int w = span[2] - span[0];
                int h = span[3] - span[1];
                srcRas = srcRas.createChild(srcx + span[0], srcy + span[1],
                                            w, h, 0, 0, null);
                dstRas = dstRas.createWritableChild(span[0], span[1],

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        int[] dstPix = icr.getDataStorage();


        Region roi = CustomComponent.getRegionOfInterest(src, dst, clip,
                                                         srcx, srcy,
                                                         dstx, dsty, w, h);
        SpanIterator si = roi.getSpanIterator();


        Object srcPix = null;


        int dstScan = icr.getScanlineStride();
        // assert(icr.getPixelStride() == 1);
        srcx -= dstx;
        srcy -= dsty;
        int span[] = new int[4];
        while (si.nextSpan(span)) {
            int rowoff = icr.getDataOffset(0) + span[1] * dstScan + span[0];
            for (int y = span[1]; y < span[3]; y++) {
                int off = rowoff;
                for (int x = span[0]; x < span[2]; x++) {
                    srcPix = srcRast.getDataElements(x+srcx, y+srcy, srcPix);

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        ColorModel dstCM = dst.getColorModel();


        Region roi = CustomComponent.getRegionOfInterest(src, dst, clip,
                                                         srcx, srcy,
                                                         dstx, dsty, w, h);
        SpanIterator si = roi.getSpanIterator();


        Object dstPix = null;


        int srcScan = icr.getScanlineStride();
        // assert(icr.getPixelStride() == 1);
        srcx -= dstx;
        srcy -= dsty;
        int span[] = new int[4];
        while (si.nextSpan(span)) {
            int rowoff = (icr.getDataOffset(0) +
                          (srcy + span[1]) * srcScan +
                          (srcx + span[0]));
            for (int y = span[1]; y < span[3]; y++) {
                int off = rowoff;

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        ColorModel dstCM = dst.getColorModel();


        Region roi = CustomComponent.getRegionOfInterest(src, dst, clip,
                                                         srcx, srcy,
                                                         dstx, dsty, w, h);
        SpanIterator si = roi.getSpanIterator();


        int xorrgb = ((XORComposite)comp).getXorColor().getRGB();
        Object xorPixel = dstCM.getDataElements(xorrgb, null);


        Object srcPixel = null;
        Object dstPixel = null;


        int srcScan = icr.getScanlineStride();
        // assert(icr.getPixelStride() == 1);
        srcx -= dstx;
        srcy -= dsty;
        int span[] = new int[4];
        while (si.nextSpan(span)) {
            int rowoff = (icr.getDataOffset(0) +
                          (srcy + span[1]) * srcScan +
                          (srcx + span[0]));
            for (int y = span[1]; y < span[3]; y++) {
                int off = rowoff;

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