scg/ch03/SpinningTarget03

01 packagepackage is used to name the directory or folder a class is in scg.ch03;
02 
03 importimport means to make the classes and/or packages available in this program fang2.core.Game;
04 importimport means to make the classes and/or packages available in this program fang2.sprites.RectangleSprite;
05 importimport means to make the classes and/or packages available in this program fang2.transformers.SpinTransformer;
06 
07 /** A sample program spinning five concentric squares. */
08 publicpublic is used to indicate unrestricted access (any other class can have access) classclass is a group of fields and methods used for making objects SpinningTarget03
09   extendsextends means to customize or extend the functionality of a class Game {open braces start code blocks and must be matched with a close brace
10   /**
11    * Add five concentric, alternating color squares to center of screen.
12    * Then add an {open braces start code blocks and must be matched with a close brace@link SpinTransformer}close braces end code blocks and must match an earlier open brace to all five (use one
13    * transformer on five sprites) to spin the image around.
14    */
15   @Override
16   publicpublic is used to indicate unrestricted access (any other class can have access) voidvoid means the method does not return a value setup() {open braces start code blocks and must be matched with a close brace
17     RectangleSprite five =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor RectangleSprite(0.5, 0.5);
18     five.setColor(getColor("gold"));
19     five.setLocation(0.5, 0.5);
20     addSprite(five);
21 
22     RectangleSprite four =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor RectangleSprite(0.4, 0.4);
23     four.setColor(getColor("blue"));
24     four.setLocation(0.5, 0.5);
25     addSprite(four);
26 
27     RectangleSprite three =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor RectangleSprite(0.3, 0.3);
28     three.setColor(getColor("gold"));
29     three.setLocation(0.5, 0.5);
30     addSprite(three);
31 
32     RectangleSprite two =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor RectangleSprite(0.2, 0.2);
33     two.setColor(getColor("blue"));
34     two.setLocation(0.5, 0.5);
35     addSprite(two);
36 
37     RectangleSprite one =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor RectangleSprite(0.1, 0.1);
38     one.setColor(getColor("gold"));
39     one.setLocation(0.5, 0.5);
40     addSprite(one);
41     
42     // SpinTransformer takes degrees/second of spin
43     SpinTransformer spinner =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor SpinTransformer(90.0);
44     one.addTransformer(spinner);
45     two.addTransformer(spinner);
46     three.addTransformer(spinner);
47     four.addTransformer(spinner);
48     five.addTransformer(spinner);
49   }close braces end code blocks and must match an earlier open brace
50 }close braces end code blocks and must match an earlier open brace
51 
52 //Uploaded on Mon Mar 29 21:41:58 EDT 2010