scg/ch05/AxisSnowman

01 packagepackage is used to name the directory or folder a class is in scg.ch05;
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.CompositeSprite;
05 importimport means to make the classes and/or packages available in this program fang2.sprites.LineSprite;
06 importimport means to make the classes and/or packages available in this program fang2.sprites.OvalSprite;
07 
08 // FANG Demonstration program: CompositeSprite
09 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 AxisSnowman
10   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
11   privateprivate is used to restrict access to the current class only CompositeSprite redSnowman;
12 
13   // spin the snowman about 4 times a minute; see how everything
14   // moves relative to (0.0, 0.0) ON snowman; 24 degrees/second
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 advance(doubledouble is the type for numbers that can contain decimal fractions secondsSinceLastCall) {open braces start code blocks and must be matched with a close brace
17     redSnowman.rotateDegrees(24.0 * secondsSinceLastCall);
18   }close braces end code blocks and must match an earlier open brace
19 
20   // add three circles to snowman, add snowman to scene
21   @Override
22   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
23     redSnowman =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor CompositeSprite();
24 
25     OvalSprite head =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor OvalSprite(0.3, 0.3);
26     head.setColor(getColor("SCG Red"));
27     head.setLocation(0, -0.35);
28     redSnowman.addSprite(head);
29 
30     OvalSprite middle =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor OvalSprite(0.4, 0.4);
31     middle.setColor(getColor("SCG Red"));
32     middle.setLocation(0.0, 0.0);
33     redSnowman.addSprite(middle);
34 
35     OvalSprite bottom =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor OvalSprite(0.5, 0.5);
36     bottom.setColor(getColor("SCG Red"));
37     bottom.setLocation(0, 0.45);
38     redSnowman.addSprite(bottom);
39 
40     LineSprite yAxis =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor LineSprite(0, -0.5, 0, 0.5);
41     yAxis.setColor(getColor("white"));
42     redSnowman.addSprite(yAxis);
43 
44     LineSprite xAxis =this assignment operator makes the left side equal to the right side newnew is used to create objects by calling the constructor LineSprite(-0.5, 0, 0.5, 0);
45     xAxis.setColor(getColor("white"));
46     redSnowman.addSprite(xAxis);
47 
48     // snowman scaled and placed off center on screen
49     redSnowman.setLocation(0.67, 0.67);
50     redSnowman.setScale(0.50);
51     addSprite(redSnowman);
52   }close braces end code blocks and must match an earlier open brace
53 }close braces end code blocks and must match an earlier open brace
54 
55 //Uploaded on Mon Mar 29 21:40:30 EDT 2010