/** Reads an SGI image from the specified InputStream. */
public static SGIImage read(final InputStream in) throws IOException {
final DataInputStream dIn = new DataInputStream(new BufferedInputStream(in));
final Header header = new Header(dIn);
final SGIImage res = new SGIImage(header);
res.decodeImage(dIn);
return res;
}
/** Creates an SGIImage from the specified data in either RGB or RGBA format. */
public static SGIImage createFromData(
final int width, final int height, final boolean hasAlpha, final byte[] data) {
final Header header = new Header();
header.xsize = (short) width;
header.ysize = (short) height;
header.zsize = (short) (hasAlpha ? 4 : 3);
final SGIImage image = new SGIImage(header);
image.data = data;
return image;
}