Example for WebcamPanel Painter which rotates image, refs #581

webcam-capture/src/example/java/ImageTransformerRotationExample.java

@@ -7,6 +7,7 @@
 import com.github.sarxos.webcam.Webcam;
 import com.github.sarxos.webcam.WebcamImageTransformer;
 import com.github.sarxos.webcam.WebcamPanel;
+import com.github.sarxos.webcam.WebcamPanel.DrawMode;
 import com.github.sarxos.webcam.WebcamResolution;
 import com.github.sarxos.webcam.util.jh.JHFlipFilter;
 
@@ -22,8 +23,8 @@ public class ImageTransformerRotationExample implements WebcamImageTransformer {
 	/**
 	 * This is filter from JH Labs which flips buffered image 90 degrees clockwise. For more details
 	 * please follow to the <a href="http://www.jhlabs.com/ip/filters/index.html">JH Labs Filters<a>
-	 * home page (filters source code can be found <a
-	 * href="https://github.com/axet/jhlabs">here</a>).
+	 * home page (filters source code can be found
+	 * <a href="https://github.com/axet/jhlabs">here</a>).
 	 */
 	private final BufferedImageOp filter = new JHFlipFilter(JHFlipFilter.FLIP_90CW);
 
@@ -49,7 +50,7 @@ public ImageTransformerRotationExample() {
 
 		WebcamPanel panel = new WebcamPanel(webcam);
 		panel.setFPSDisplayed(true);
-		panel.setFitArea(true);
+		panel.setDrawMode(DrawMode.FIT);
 
 		// add panel to window
 

webcam-capture/src/example/java/WebcamPanelRotationExample.java

@@ -0,0 +1,54 @@
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+
+import javax.swing.JFrame;
+
+import com.github.sarxos.webcam.Webcam;
+import com.github.sarxos.webcam.WebcamPanel;
+import com.github.sarxos.webcam.WebcamResolution;
+import com.github.sarxos.webcam.util.jh.JHFlipFilter;
+
+
+/**
+ * This example demonstrates how to rotate image in {@link WebcamPanel} without rotating original
+ * image which can be obtained with {@link Webcam#getImage()}.
+ * 
+ * @author Bartosz Firyn (sarxos)
+ *
+ */
+public class WebcamPanelRotationExample {
+
+	public static void main(String[] args) throws InterruptedException {
+
+		final Webcam webcam = Webcam.getDefault();
+		webcam.setViewSize(WebcamResolution.QVGA.getSize());
+
+		final WebcamPanel panel = new WebcamPanel(webcam);
+		panel.setFPSDisplayed(true);
+		panel.setImageSizeDisplayed(true);
+
+		// you may wonder what is this below - why new operator is invoked on panel instance, so let
+		// me clarify this - since DefaultPainter class is an inner non-static class it has to be
+		// invoked from the panel context - this is because an instance of a non-static inner class
+		// holds a reference to it's owner object (the instance of the outer class that created it)
+
+		final WebcamPanel.Painter painter = panel.new DefaultPainter() {
+
+			final JHFlipFilter rotate = new JHFlipFilter(JHFlipFilter.FLIP_90CW);
+
+			@Override
+			public void paintImage(WebcamPanel owner, BufferedImage image, Graphics2D g2) {
+				super.paintImage(owner, rotate.filter(image, null), g2);
+			}
+		};
+
+		panel.setPainter(painter);
+
+		final JFrame window = new JFrame("Test Rotation");
+		window.add(panel);
+		window.setResizable(true);
+		window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+		window.pack();
+		window.setVisible(true);
+	}
+}