List of forceIndexColorModelForGIF() Examples

Examples of forceIndexColorModelForGIF()

org.geotools.image.ImageWorker.forceIndexColorModelForGIF()

Converts the image to a GIF-compliant image. This method has been created in order to convert the input image to a form that is compatible with the GIF model. It first remove the information about transparency since the error diffusion and the error dither operations are unable to process images with more than 3 bands. Afterwards the image is processed with an error diffusion operator in order to reduce the number of bands from 3 to 1 and the number of color to 216. A suitable layout is used for the final image via the {@linkplain #getRenderingHints rendering hints} in order to take into account the different layout model for the final image.

Tip: For optimizing writing GIF, we need to create the image untiled. This can be done by invoking {@linkplain #setRenderingHint setRenderingHint}( {@linkplain #TILING_ALLOWED}, Boolean.FALSE) first. @param errorDiffusion Tells if I should use {@link ErrorDiffusionDescriptor} or {@link OrderedDitherDescriptor} JAi operations. @return this {@link ImageWorker}. @see #isIndexed @see #forceIndexColorModel @see #forceBitmaskIndexColorModel

       * need to go to indecolor model somehow. This code for the moment
       * remove transparency, but I am confident I will find a way to add
       * that.
       */
      if (image.getColorModel() instanceof ComponentColorModel) {
        worker.forceIndexColorModelForGIF(true);
        image = worker.getRenderedImage();
      } else
      /**
       * IndexColorModel with full transparency support is not suitable
       * for gif images we need to go to bitmask loosing some

       * IndexColorModel with full transparency support is not suitable
       * for gif images we need to go to bitmask loosing some
       * informations. we have only one full transparent color.
       */
      if (image.getColorModel() instanceof IndexColorModel) {
        worker.forceIndexColorModelForGIF(true);
        image = worker.getRenderedImage();
      }
    }
    // else
    // -----------------TIFF--------------------------------------

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Examples of forceIndexColorModelForGIF()

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

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