mudphone · August 30, 2014 02:38 · Aug 30, 2014
diff --git a/TimeDisplacement.pde b/TimeDisplacement.pde
@@ -0,0 +1,83 @@
+/**
+ * Time Displacement
+ * by David Muth 
+ * 
+ * Keeps a buffer of video frames in memory and displays pixel rows
+ * taken from consecutive frames distributed over the y-axis 
+ */ 
+
+import processing.video.*;
+
+Capture video;
+int signal = 0;
+
+//the buffer for storing video frames
+ArrayList frames = new ArrayList();
+
+void setup() {
+  size(640, 480);
+
+  // This the default video input, see the GettingStartedCapture 
+  // example if it creates an error
+  video = new Capture(this, width, height);
+
+  // Start capturing the images from the camera
+  video.start();  
+}
+
+void captureEvent(Capture camera) {
+  camera.read();
+
+  // Copy the current video frame into an image, so it can be stored in the buffer
+  PImage img = createImage(width, height, RGB);
+  video.loadPixels();
+  arrayCopy(video.pixels, img.pixels);
+
+  frames.add(img);
+
+  // Once there are enough frames, remove the oldest one when adding a new one
+  if (frames.size() > height/4) {
+    frames.remove(0);
+  }
+}
+
+void draw() {
+ // Set the image counter to 0
+ int currentImage = 0;
+
+ loadPixels();
+
+  // Begin a loop for displaying pixel rows of 4 pixels height
+  for (int y = 0; y < video.height; y+=4) {
+    // Go through the frame buffer and pick an image, starting with the oldest one
+    if (currentImage < frames.size()) {
+      PImage img = (PImage)frames.get(currentImage);
+
+      if (img != null) {
+        img.loadPixels();
+
+        // Put 4 rows of pixels on the screen
+        for (int x = 0; x < video.width; x++) {
+          pixels[x + y * width] = img.pixels[x + y * video.width];
+          pixels[x + (y + 1) * width] = img.pixels[x + (y + 1) * video.width];
+          pixels[x + (y + 2) * width] = img.pixels[x + (y + 2) * video.width];
+          pixels[x + (y + 3) * width] = img.pixels[x + (y + 3) * video.width];
+        }  
+      }
+
+      // Increase the image counter
+      currentImage++;
+
+    } else {
+      break;
+    }
+  }
+
+  updatePixels();
+
+  // For recording an image sequence
+  //saveFrame("frame-####.jpg"); 
+}
+
+
+