Examples of org.geotools.image.ImageWorker.writePNG()

org.geotools.image.ImageWorker.writePNG()

Writes outs the image contained into this {@link ImageWorker} as a PNG using the provided destination, compression and compression rate.

The destination object can be anything providing that we have an {@link ImageOutputStreamSpi} that recognizes it. @param destination where to write the internal {@link #image} as a PNG. @param compression algorithm. @param compressionRate percentage of compression. @param nativeAcc should we use native acceleration. @param paletted should we write the png as 8 bits? @return this {@link ImageWorker}. @throws IOException In case an error occurs during the search for an {@link ImageOutputStream} or during the eoncding process. @todo Current code doesn't check if the writer already accepts the provided destination. It wraps it in a {@link ImageOutputStream}inconditionnaly.

            SampleModel sm = image.getSampleModel();
            int numBits = sm.getSampleSize(0);
            // png acceleration only works on 2 bit and 8 bit images, crashes on 4 bits
            boolean nativeAcceleration = PNGNativeAcc.booleanValue() && !(numBits > 1 && numBits < 8);
            ImageWorker iw = new ImageWorker(image);
            iw.writePNG(outStream, "FILTERED", quality, nativeAcceleration, false);
            RasterCleaner.addImage(iw.getRenderedImage());            
        }


        if (LOGGER.isLoggable(Level.FINE)) {
            LOGGER.fine("Writing png image ... done!");

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