Add Raster.getBufferedImage method.

Author: jericks

src/main/groovy/geoscript/layer/Raster.groovy

@@ -329,6 +329,21 @@ class Raster implements Renderable {
         coverage.renderedImage
     }
 
+    /**
+     * Get a BufferedImage
+     * @return A BufferedImage
+     */
+    BufferedImage getBufferedImage() {
+        RenderedImage image = getImage()
+        ColorModel colorModel = image.colorModel
+        WritableRaster writableRaster = colorModel.createCompatibleWritableRaster(image.width, image.height)
+        boolean isAlphaPremultiplied = colorModel.isAlphaPremultiplied()
+        Hashtable properties = new Hashtable()
+        BufferedImage result = new BufferedImage(colorModel, writableRaster, isAlphaPremultiplied, properties)
+        image.copyData(writableRaster)
+        result
+    }
+
     /**
      * Get the value of the Raster at the given geographic Location.
      * If the Raster contains multiple bands a Collection of values, one for

src/test/groovy/geoscript/layer/RasterTestCase.groovy

@@ -35,6 +35,7 @@ class RasterTestCase {
 
         assertNotNull raster.data
         assertNotNull raster.image
+        assertNotNull raster.bufferedImage
 
         Bounds bounds = raster.bounds
         assertEquals(1166191.0260847565, bounds.minX, 0.0000000001)