Restore previously removed PngFileWriter and TiffFileWriter constructors. (#585)

Author: leMaik

chunky/src/java/se/llbit/png/PngFileWriter.java

@@ -16,6 +16,8 @@
  */
 package se.llbit.png;
 
+import java.io.File;
+import java.io.FileOutputStream;
 import java.io.OutputStream;
 import se.llbit.util.TaskTracker;
 
@@ -45,6 +47,13 @@ public PngFileWriter(OutputStream out) throws IOException {
     this.out.writeLong(PNG_SIGNATURE);
   }
 
+  /**
+   * @throws IOException
+   */
+  public PngFileWriter(File file) throws IOException {
+    this(new FileOutputStream(file));
+  }
+
   /**
    * @throws IOException
    */

chunky/src/java/se/llbit/tiff/TiffFileWriter.java

@@ -16,6 +16,8 @@
  */
 package se.llbit.tiff;
 
+import java.io.File;
+import java.io.FileOutputStream;
 import se.llbit.chunky.renderer.scene.Scene;
 import se.llbit.util.TaskTracker;
 
@@ -47,6 +49,13 @@ public TiffFileWriter(OutputStream out) throws IOException {
     out.write(0x2A);
   }
 
+  /**
+   * @throws IOException
+   */
+  public TiffFileWriter(File file) throws IOException {
+    this(new FileOutputStream(file));
+  }
+
   /**
    * @throws IOException
    */