/** Tests the {@link ImageWorker#tile()} methods. Some trivial tests are performed before. */
@Test
public void testReTile() {
assertTrue("Assertions should be enabled.", ImageWorker.class.desiredAssertionStatus());
ImageWorker worker = new ImageWorker(worldImage);
assertSame(worldImage, worker.getRenderedImage());
assertEquals(4, worker.getNumBands());
assertEquals(-1, worker.getTransparentPixel());
assertTrue(worker.isBytes());
assertFalse(worker.isBinary());
assertFalse(worker.isIndexed());
assertTrue(worker.isColorSpaceRGB());
assertFalse(worker.isColorSpaceGRAYScale());
assertTrue(worker.isTranslucent());
assertSame("Expected no operation.", worldImage, worker.rescaleToBytes().getRenderedImage());
assertSame(
"Expected no operation.", worldImage, worker.forceComponentColorModel().getRenderedImage());
assertSame(
"Expected no operation.", worldImage, worker.forceColorSpaceRGB().getRenderedImage());
assertSame("Expected no operation.", worldImage, worker.retainBands(4).getRenderedImage());
// Following will change image, so we need to test after the above assertions.
worker.setRenderingHint(
JAI.KEY_IMAGE_LAYOUT,
new ImageLayout()
.setTileGridXOffset(0)
.setTileGridYOffset(0)
.setTileHeight(64)
.setTileWidth(64));
worker.tile();
assertSame("Expected 64.", 64, worker.getRenderedImage().getTileWidth());
assertSame("Expected 64.", 64, worker.getRenderedImage().getTileHeight());
}
/** Tests the conversion between RGB and indexed color model. */
@Test
public void testRGB2Palette() {
assertTrue("Assertions should be enabled.", ImageWorker.class.desiredAssertionStatus());
final ImageWorker worker = new ImageWorker(worldImage);
show(worker, "Input file");
worker.forceIndexColorModelForGIF(true);
// Convert to to index color bitmask
ColorModel cm = worker.getRenderedImage().getColorModel();
assertTrue("wrong color model", cm instanceof IndexColorModel);
assertEquals("wrong transparency model", Transparency.BITMASK, cm.getTransparency());
assertEquals("wrong transparency index", 255, ((IndexColorModel) cm).getTransparentPixel());
show(worker, "Paletted bitmask");
// Go back to rgb.
worker.forceComponentColorModel();
cm = worker.getRenderedImage().getColorModel();
assertTrue("wrong color model", cm instanceof ComponentColorModel);
assertEquals("wrong bands number", 4, cm.getNumComponents());
show(worker, "RGB translucent");
assertEquals("wrong transparency model", Transparency.TRANSLUCENT, cm.getTransparency());
show(worker, "RGB translucent");
}
