Initial Commit

Java/Processing/processing-3.3.6/modes/java/examples/Topics/Image Processing/LinearImage/LinearImage.pde

@@ -0,0 +1,44 @@
+/**
+ * Linear Image. 
+ * 
+ * Click and drag mouse up and down to control the signal. 
+ * Press and hold any key to watch the scanning. 
+ */
+
+PImage img;
+int direction = 1;
+
+float signal;
+
+void setup() {
+  size(640, 360);
+  stroke(255);
+  img = loadImage("sea.jpg");
+  img.loadPixels();
+  loadPixels();
+}
+
+void draw() {
+  if (signal > img.height-1 || signal < 0) { 
+    direction = direction * -1;
+  }
+  if (mousePressed == true) {
+    signal = abs(mouseY % img.height);
+  } 
+  else {
+    signal += (0.3*direction);
+  }
+
+  if (keyPressed == true) {
+    set(0, 0, img);
+    line(0, signal, img.width, signal);
+  } 
+  else {
+    int signalOffset = int(signal)*img.width;
+    for (int y = 0; y < img.height; y++) {
+      arrayCopy(img.pixels, signalOffset, pixels, y*width, img.width);
+    }
+    updatePixels();
+  }
+}
+