moving examples to hang out with their libraries

java/libraries/video/examples/SlitScan/SlitScan.pde

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+/**
+ * Simple Real-Time Slit-Scan Program. 
+ * By Golan Levin.
+ * 
+ * This demonstration depends on the canvas height being equal 
+ * to the video capture height. If you would prefer otherwise, 
+ * consider using the image copy() function rather than the 
+ * direct pixel-accessing approach I have used here. 
+ * 
+ * Created December 2006. 
+ * Updated June 2007 by fry.
+ */
+import processing.video.*;
+
+Capture video;
+
+int videoSliceX;
+int drawPositionX;
+
+
+void setup() {
+  size(600, 240, P2D);
+  
+  // Uses the default video input, see the reference if this causes an error
+  video = new Capture(this, 320, 240, 30);
+  
+  videoSliceX = video.width / 2;
+  drawPositionX = width - 1;
+  background(0);
+}
+
+
+void draw() {
+  if (video.available()) {
+    video.read();
+    video.loadPixels();
+    
+    // Copy a column of pixels from the middle of the video 
+    // To a location moving slowly across the canvas.
+    loadPixels();
+    for (int y = 0; y < video.height; y++){
+      int setPixelIndex = y*width + drawPositionX;
+      int getPixelIndex = y*video.width  + videoSliceX;
+      pixels[setPixelIndex] = video.pixels[getPixelIndex];
+    }
+    updatePixels();
+    
+    drawPositionX--;
+    // Wrap the position back to the beginning if necessary.
+    if (drawPositionX < 0) {
+      drawPositionX = width - 1;
+    }
+  }
+}