java/examples/Basics/Transform/Translate/applet/Translate.java

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+import processing.core.*; 
+
+import java.applet.*; 
+import java.awt.*; 
+import java.awt.image.*; 
+import java.awt.event.*; 
+import java.io.*; 
+import java.net.*; 
+import java.text.*; 
+import java.util.*; 
+import java.util.zip.*; 
+import java.util.regex.*; 
+
+public class Translate extends PApplet {
+
+/**
+ * Translate. 
+ * 
+ * The translate() function allows objects to be moved
+ * to any location within the window. The first parameter
+ * sets the x-axis offset and the second parameter sets the
+ * y-axis offset. 
+ */
+ 
+float x, y;
+float size = 40.0f;
+
+public void setup() 
+{
+  size(200,200);
+  noStroke();
+  frameRate(30);
+}
+
+public void draw() 
+{
+  background(102);
+  
+  x = x + 0.8f;
+  
+  if (x > width + size) {
+    x = -size;
+  } 
+  
+  translate(x, height/2-size/2);
+  fill(255);
+  rect(-size/2, -size/2, size, size);
+  
+  // Transforms accumulate.
+  // Notice how this rect moves twice
+  // as fast as the other, but it has
+  // the same parameter for the x-axis value
+  translate(x, size);
+  fill(0);
+  rect(-size/2, -size/2, size, size);
+}
+
+  static public void main(String args[]) {
+    PApplet.main(new String[] { "Translate" });
+  }
+}