scg/ch02/ScreenCoords

01 packagepackage is used to name the directory or folder a class is in scg.ch02;
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.sprites.StringSprite;
06 
07 /**
08  * Draws two rectangles as axes across the center of the screen (shows
09  * off some odd color names) and then labels the origin, center, and
10  * extent points on the screen.
11  */
12 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 ScreenCoords
13   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
14   /**
15    * Set up the sprites to display on the screen. Five sprites are
16    * created and added to the game.
17    */
18   @Override
19   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
20     RectangleSprite vertical =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor RectangleSprite(0.05, 1.0);
21     vertical.setColor(getColor("pink", 128));
22     vertical.setLocation(0.5, 0.5);
23     addSprite(vertical);
24 
25     RectangleSprite horizontal =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor RectangleSprite(1.0, 0.05);
26     horizontal.setColor(getColor("cornflower blue", 128));
27     horizontal.setLocation(0.5, 0.5);
28     addSprite(horizontal);
29 
30     // labels: string (in quotes), height (in screens)
31     StringSprite origin =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor StringSprite("(0.0, 0.0)");
32     origin.setLineHeight(0.05);
33     origin.setColor(getColor("white"));
34     origin.setLocation(0.1, 0.05);
35     addSprite(origin);
36 
37     StringSprite extent =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor StringSprite("(1.0, 1.0)");
38     extent.setLineHeight(0.05);
39     extent.setColor(getColor("white"));
40     extent.setLocation(0.9, 0.95);
41     addSprite(extent);
42 
43     StringSprite center =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor StringSprite("(0.5, 0.5)");
44     center.setLineHeight(0.05);
45     center.setColor(getColor("white"));
46     center.setLocation(0.63, 0.55);
47     addSprite(center);
48   }close braces end code blocks and must match an earlier open brace
49 }close braces end code blocks and must match an earlier open brace
50 
51 //Uploaded on Mon Mar 29 21:39:52 EDT 2010