GMU:Processing im Park/Part3: Difference between revisions

GMU:Processing im Park/Part3 (view source)

Revision as of 13:45, 17 January 2016

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+== Video Delay ==
+<source lang="java">
+import processing.video.*;
+Capture camera;
+int maxFrames;
+int d = 4;
+boolean recording = false;
+ArrayList frames = new ArrayList();
+void setup() {
+  size(640, 480);
+  maxFrames = width / d;
+  // init camera
+  camera = new Capture(this, width, height);
+  camera.start(); // wichtig!
+  // add first image
+  PImage img = createImage(width, height, RGB);
+  frames.add(img);
+}
+void draw() {
+  int n = frames.size();
+  // iterate over vertical strips
+  for(int i = 0; i < n; i++) {
+    // get snip from the frame
+    PImage img = (PImage) frames.get(i);
+    // x coordinate for the left side of the current strip
+    int x1 = int(map(i, 0, n-1, 0, width/2 - 100));
+    int y1 = int(map(i, 0, n-1, 0, height/2 - 100));
+    int x2 = width - x1;
+    int y2 = height - y1;
+    int w = x2 - y1;
+    int h = y2 - y1;
+    PImage snip = img.get(x1, y1, w, h);
+    // show strip on screen
+    //tint(255, 50);
+    image(snip, x1, y1);
+  }
+  if(recording) {
+    saveFrame("frame-####.png");
+    // recording feedback
+    stroke(255, 0, 0);
+    noFill();
+    strokeWeight(5);
+    rect(0, 0, width, height);
+  }
+}
+void keyPressed() {
+  recording = !recording;
+}
+void captureEvent(Capture camera) {
+  camera.read(); // wichtig!
+  PImage img = camera.get();
+  frames.add(img);
+  if( frames.size() > maxFrames) {
+    frames.remove(0);
+  }
+}
+</source>