added writing tif and webp

pom.xml

@@ -6,7 +6,7 @@
 
 	<groupId>com.marginallyclever</groupId>
 	<artifactId>Makelangelo</artifactId>
-	<version>7.55.1</version>
+	<version>7.55.3</version>
 	<name>Makelangelo</name>
 		<description>Makelangelo Software is a Java program that prepares art for CNC plotters.  It is especially designed for the Makelangelo Robot.
 It pairs really well with Marlin-polargraph, the code in the brain of the robot that receives instructions and moves the motors.</description>

src/main/java/com/marginallyclever/makelangelo/makeart/io/SaveBitmap.java

@@ -14,7 +14,7 @@
 import java.io.OutputStream;
 
 /**
- * Save Turtle to any supported bitmap format.
+ * Save {@link Turtle} to any bitmap format supported by {@link ImageIO}.
  * @author Dan Royer
  */
 public class SaveBitmap implements TurtleSaver {
@@ -78,6 +78,8 @@ public boolean save(OutputStream outputStream, Turtle myTurtle, PlotterSettings
 		}
 
 		ImageIO.write(img, extension, outputStream);
+		// webp requires a flush or there will be a zero-length file.
+		outputStream.flush();
 
 		logger.debug("done.");
 		return true;

src/main/java/com/marginallyclever/makelangelo/makeart/io/TurtleFactory.java

@@ -27,11 +27,13 @@ public class TurtleFactory {
 			new SaveDXF(),
 			new SaveSVG(),
 			new SaveGCode(),
-			new SaveBitmap("BMP",false),
-			new SaveBitmap("GIF",false),
-			new SaveBitmap("JPG",false),
-			new SaveBitmap("PIO",false),
-			new SaveBitmap("PNG",true),
+			new SaveBitmap("bmp",false),
+			new SaveBitmap("gif",false),
+			new SaveBitmap("jpg",false),
+			new SaveBitmap("pio",false),
+			new SaveBitmap("png",true),
+			new SaveBitmap("tif",false),
+			new SaveBitmap("webp",true),
 	};
 
 	public static Turtle load(String filename) throws Exception {

src/main/java/com/marginallyclever/makelangelo/makeart/io/TurtleLoader.java

@@ -1,29 +1,31 @@
 package com.marginallyclever.makelangelo.makeart.io;
 
-import java.io.InputStream;
+import com.marginallyclever.makelangelo.turtle.Turtle;
 
 import javax.swing.filechooser.FileNameExtensionFilter;
+import java.io.InputStream;
 
-import com.marginallyclever.makelangelo.turtle.Turtle;
-
+/**
+ * A TurtleLoader is a plugin that can load a file into the system as a {@link Turtle}.
+ */
 public interface TurtleLoader {		
 	/**
 	 * @return returns a FileNameExtensionFilter with the extensions supported by this filter.
 	 */
-	public FileNameExtensionFilter getFileNameFilter();
+	FileNameExtensionFilter getFileNameFilter();
 
 	/**
 	 * Checks a string's filename, which includes the file extension, (e.g. foo.jpg).
 	 *
 	 * @param filename absolute path of file to load.
 	 * @return true if this plugin can load this file.
 	 */
-	public boolean canLoad(String filename);
+	boolean canLoad(String filename);
 
 	/**
 	 * attempt to load a file into the system from a given stream
 	 * @param inputStream source of image
 	 * @return true if load successful.
 	 */
-	public Turtle load(InputStream inputStream) throws Exception;
+	Turtle load(InputStream inputStream) throws Exception;
 }

src/main/java/com/marginallyclever/makelangelo/makeart/io/TurtleSaver.java

@@ -6,6 +6,9 @@
 import javax.swing.filechooser.FileNameExtensionFilter;
 import java.io.OutputStream;
 
+/**
+ * Save a {@link Turtle} to a file.
+ */
 public interface TurtleSaver {
 	FileNameExtensionFilter getFileNameFilter();