1 The classes for the Java2D(TM) demo are contained in the J2Ddemo.jar file. 2 To run the J2D demo: 3 4 % java -jar J2Ddemo.jar 5 6 ----------------------------------------------------------------------- 7 Introduction 8 ----------------------------------------------------------------------- 9 10 This Java2D demo consists of a set of demos housed in one GUI 11 framework that uses a JTabbedPane. You can access different groups of 12 demos by clicking the tabs at the top of the pane. There are demo 13 groups for Arcs_Curves, Clipping, Colors, Composite, Fonts, Images, 14 Lines, Mix, Paint, Paths and Transforms. On the right-hand side of the 15 pane, the GUI framework features individual and global controls for 16 changing graphics attributes. There's also a memory-usage monitor, and 17 a monitor for tracking the performance, in frames per second, of 18 animation demos. 19 20 21 ----------------------------------------------------------------------- 22 Tips on usage 23 ----------------------------------------------------------------------- 24 25 Click on one of the tabs at the top of the pane to select a demo group. 26 When you select a group, a set of surfaces is displayed, each of which 27 contains one of the group's demos. At the bottom of each surface is 28 a set of tools for controlling the demo. The tools can be displayed 29 by selecting the Tools checkbox in the Global Controls panel or 30 by clicking on the slim strip of gray bumps at the bottom of the demo 31 panel. 32 33 If you click on a demo surface, that demo is laid out by itself. A 34 new icon button will appear in the demo's tools toolbar one that enables 35 you to create new instances of that demo's surface. 36 37 To run the demo continuously without user interaction, select the 38 Run Window item in the Options menu and press the run button in the 39 new window that's displayed. To do this from the command line: 40 41 java -jar J2Ddemo.jar -runs=10 42 43 To view all the command line options for customizing demo runs: 44 45 java -jar J2Ddemo.jar -help 46 47 You can run the demos in stand-alone mode by issuing a command like this 48 49 java -cp J2Ddemo.jar java2d.demos.Clipping.ClipAnim 50 51 You can run the demos in groups by issuing a command like this 52 53 java -cp J2Ddemo.jar java2d.DemoGroup Clipping 54 55 To increase or decrease the Memory Monitor sampling rate click on the 56 Memory Monitor's title border, a panel with a TextField will appear. 57 58 The J2Ddemo Intro (the 'J2D demo' tab) contains a scene table, click in 59 the gray border and a table will appear. 60 61 Animated demos have a slider to control the animation rate. Bring up 62 the animated demo toolbar, then click in the gray area of the toolbar 63 panel, the toolbar goes away and the slider appears. 64 65 Demos that have Custom Controls can have their Custom Control Thread 66 activated and stopped by clicking in the gray area of the demos Custom 67 Control panel. 68 69 ----------------------------------------------------------------------- 70 NOTE about demo surfaces 71 ----------------------------------------------------------------------- 72 73 The demo groups are in separate packages with their class files stored 74 in directories named according to the demo group name. All drawing 75 demos extend either the Surface, AnimatingSurface, ControlsSurface or 76 AnimatingControlsSurface classes. Surface is the base class, demos 77 must implement the Surface's render method. All animated demos extend 78 either the AnimatingSurface or the AnimatingControlsSurface classes. 79 Animated demos must implement the reset and step methods. The demos 80 with gui controls extend either the ControlsSurface or the 81 AnimatingControlsSurface classes. Demos with controls must implement 82 the methods in the CustomControlsContext interface. 83 84 85 ====================================================================== 86 87 Here are some resources for learning about and using the Java2D(TM) 88 89 OpenJDK group page: http://openjdk.java.net/groups/2d/ 90 91 Learning Java 2D: http://www.oracle.com/technetwork/articles/java/java2dpart1-137217.html 92 93 Tutorial : http://download.oracle.com/javase/tutorial/2d/ 94 Specification: http://download.oracle.com/javase/8/docs/technotes/guides/2d/spec/j2d-bookTOC.html 95 Java 2D (TM) API White Paper : http://www.oracle.com/technetwork/java/javase/tech/2d-142228.html 96 2D FAQ: http://www.oracle.com/technetwork/java/index-137037.html