Initial Commit

Java/Processing/processing-3.3.6/modes/java/examples/Basics/Structure/SetupDraw/SetupDraw.pde

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+/**
+ * Setup and Draw. 
+ * 
+ * The code inside the draw() function runs continuously
+ * from top to bottom until the program is stopped.  
+ */
+
+int y = 100;
+
+// The statements in the setup() function 
+// execute once when the program begins
+void setup() {
+  size(640, 360);  // Size must be the first statement
+  stroke(255);     // Set line drawing color to white
+  frameRate(30);
+}
+// The statements in draw() are executed until the 
+// program is stopped. Each statement is executed in 
+// sequence and after the last line is read, the first 
+// line is executed again.
+void draw() { 
+  background(0);   // Clear the screen with a black background
+  y = y - 1; 
+  if (y < 0) { 
+    y = height; 
+  } 
+  line(0, y, width, y);  
+} 
+