first commit

2024-01-15 20:14:10 +00:00
commit 8c81ee28b7
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--- a/1/Java/Chapter01/House
+++ b/1/Java/Chapter01/House
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+/**
+ * This class represents a simple picture. You can draw the picture using
+ * the draw method. But wait, there's more: being an electronic picture, it
+ * can be changed. You can set it to black-and-white display and back to
+ * colors (only after it's been drawn, of course).
+ *
+ * This class was written as an early example for teaching Java with BlueJ.
+ * 
+ * @author  Michael K<>lling and David J. Barnes
+ * @version 2016.02.29
+ */
+public class Picture
+{
+    private Square wall;
+    private Square window;
+    private Triangle roof;
+    private Circle sun;
+    private Circle sun2;
+    private Person person;
+    private boolean drawn;
+
+    /**
+     * Constructor for objects of class Picture
+     */
+    public Picture()
+    {
+        wall = new Square();
+        window = new Square();
+        roof = new Triangle();  
+        sun = new Circle();
+        //sun2 = new Circle();
+        person = new Person();
+        drawn = false;
+    }
+
+    /**
+     * Draw this picture.
+     */
+    public void draw()
+    {
+        if(!drawn) {
+            wall.moveHorizontal(-140);
+            wall.moveVertical(20);
+            wall.changeSize(120);
+            wall.makeVisible();
+            
+            window.changeColor("black");
+            window.moveHorizontal(-120);
+            window.moveVertical(40);
+            window.changeSize(40);
+            window.makeVisible();
+    
+            roof.changeSize(60, 180);
+            roof.moveHorizontal(20);
+            roof.moveVertical(-60);
+            roof.makeVisible();
+    
+            sun.changeColor("blue");
+            sun.moveHorizontal(100);
+            sun.moveVertical(-40);
+            sun.changeSize(80);
+            sun.makeVisible();
+            
+            //sun2.changeColor("yellow");
+            //sun2.moveHorizontal(30);
+            //sun2.moveVertical(-35);
+            //sun2.changeSize(50);
+            //sun2.makeVisible();
+            drawn = true;
+        }
+    }
+
+    /**
+     * Change this picture to black/white display
+     */
+    public void setBlackAndWhite()
+    {
+        wall.changeColor("black");
+        window.changeColor("white");
+        roof.changeColor("black");
+        sun.changeColor("black");
+        //sun2.changeColor("black");
+    }
+
+    /**
+     * Change this picture to use color display
+     */
+    public void setColor()
+    {
+        wall.changeColor("red");
+        window.changeColor("black");
+        roof.changeColor("green");
+        sun.changeColor("yellow");
+        //sun2.changeColor("green");
+    }
+
+    /**
+     * Start Sunset
+     */
+    public void doSunset()
+    {
+        sun.slowMoveVertical(250);
+        setBlackAndWhite();
+    }
+        /**
+     * Start Sunrise
+     */
+    public void doSunrise()
+    {
+        sun.slowMoveVertical(-250);
+        setColor();
+    }
+}