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- The classes for the Java2D demo are contained in the Java2Demo.jar file.
- To run the Java2D demo:
-
- % java -jar Java2Demo.jar
- - or -
- % appletviewer Java2Demo.html
-
- Although it's not necessary to unpack the Java2Demo.jar file to run
- the demo, you may want to extract its contents if you plan to modify
- any of the demo source code. To extract the contents of Java2Demo.jar,
- run this command from the Java2D directory:
-
- jar xvf Java2Demo.jar
-
- Note: These instructions assume that the 1.4 versions of the java,
- appletviewer, and jar commands are in your path. If they aren't,
- then you should either specify the complete path to the commands
- or update your PATH environment variable as described in the
- installation instructions for the Java 2 SDK.
-
-
- -----------------------------------------------------------------------
- Introduction
- -----------------------------------------------------------------------
-
- This Java2D demo consists of a set of demos housed in one GUI
- framework that uses a JTabbedPane. You can access different groups of
- demos by clicking the tabs at the top of the pane. There are demo
- groups for Arcs_Curves, Clipping, Colors, Composite, Fonts, Images,
- Lines, Mix, Paint, Paths and Transforms. On the right-hand side of the
- pane, the GUI framework features individual and global controls for
- changing graphics attributes. There's also a memory-usage monitor, and
- a monitor for tracking the performance, in frames per second, of
- animation demos.
-
-
- -----------------------------------------------------------------------
- Tips on usage
- -----------------------------------------------------------------------
-
- Click on one of the tabs at the top of the pane to select a demo group.
- When you select a group, a set of surfaces is displayed, each of which
- contains one of the group's demos. At the bottom of each surface is
- a set of tools for controlling the demo. The tools can be displayed
- by selecting the Tools checkbox in the Global Controls panel or
- by clicking on the slim strip of gray bumps at the bottom of the demo
- panel.
-
- If you click on a demo surface, that demo is laid out by itself. A
- new icon button will appear in the demo's tools toolbar one that enables
- you to create new instances of that demo's surface.
-
- To run the demo continuously without user interaction, select the
- Run Window item in the Options menu and press the run button in the
- new window that's displayed. To do this from the command line:
-
- java -jar Java2Demo.jar -runs=10
-
- To view all the command line options for customizing demo runs:
-
- java -jar Java2Demo.jar -help
-
- Parameters that can be used in the Java2Demo.html file inside the applet
- tag to customize demo runs:
- <param name="runs" value="10">
- <param name="delay" value="10">
- <param name="ccthread" value=" ">
- <param name="screen" value="5">
- <param name="antialias" value="true">
- <param name="rendering" value="true">
- <param name="texture" value="true">
- <param name="composite" value="true">
- <param name="verbose" value=" ">
- <param name="buffers" value="3,10">
- <param name="verbose" value=" ">
- <param name="zoom" value=" ">
-
- You can run the demos in stand-alone mode by issuing a command like
- this from the Java2D directory:
-
- java -cp Java2Demo.jar java2d.demos.Clipping.ClipAnim
-
- You can run the demos in groups by issuing a command like this from
- the Java2D directory:
-
- java -cp Java2Demo.jar java2d.DemoGroup Clipping
-
- To recompile a demo, first extract the contents of the Java2Demo.jar
- file, then issue this command from the Java2D directory:
-
- For Win32:
-
- javac src\java2d\demos\Clipping\ClipAnim.java -d .
-
- For Solaris:
-
- javac src/java2d/demos/Clipping/ClipAnim.java -d .
-
- To increase or decrease the Memory Monitor sampling rate click on the
- Memory Monitor's title border, a panel with a TextField will appear.
-
- The Java2Demo Intro (the 'Java2D' tab) contains a scene table, click in
- the gray border and a table will appear.
-
- Animated demos have a slider to control the animation rate. Bring up
- the animated demo toolbar, then click in the gray area of the toolbar
- panel, the toolbar goes away and the slider appears.
-
- Demos that have Custom Controls can have their Custom Control Thread
- activated and stopped by clicking in the gray area of the demos Custom
- Control panel.
-
- For less garbage collection and smoother animation for the Intro and
- other animated demos run with command line argument:
-
- java -jar -ms48m Java2Demo.jar
-
- To allow printing of surfaces while running the demo in applet mode,
- you must first run policytool to change your .java.policy file. In
- policytool, add the permission for java.lang.RuntimePermission with a
- target name of queuePrintJob. The .java.policy file should then include
- the following:
-
- grant {
- permission java.lang.RuntimePermission "queuePrintJob";
- };
-
-
-
- -----------------------------------------------------------------------
- NOTE about demo surfaces
- -----------------------------------------------------------------------
-
- The demo groups are in separate packages with their class files stored
- in directories named according to the demo group name. All drawing
- demos extend either the Surface, AnimatingSurface, ControlsSurface or
- AnimatingControlsSurface classes. Surface is the base class, demos
- must implement the Surface's render method. All animated demos extend
- either the AnimatingSurface or the AnimatingControlsSurface classes.
- Animated demos must implement the reset and step methods. The demos
- with gui controls extend either the ControlsSurface or the
- AnimatingControlsSurface classes. Demos with controls must implement
- the methods in the CustomControlsContext interface.
-
-
- -----------------------------------------------------------------------
- Known Issue
- -----------------------------------------------------------------------
-
- This problem is present on Microsoft Windows 95 with DirectX and
- Windows 98 and 98SE operating systems. Solaris(TM) and Windows NT
- operating systems are not affected.
-
- Java2Demo exhibits random lockups in lengthy looping runs or in runs
- having "custom Thread" activated specific tabs such as Transform. This
- lockup occurs mostly on slower machines, PII233 and below, but is also
- seen less frequently on faster machines. The cause is possibly
- DirectDraw and/or videocard driver or combination thereof. Please do
- one of the following to either prevent or reduce the chances of a
- lockup:
-
- Run with following parameter: -Dsun.java2d.noddraw=true
-
- java -Dsun.java2d.noddraw=true -jar Java2Demo.jar
-
- and/or visit Microsoft's DirectX and dnload the latest as well as the
- latest of your videocard driver.
-
-
- ======================================================================
-
- Most of the Java2Demo demos can be found as stand-alone Samples:
-
- http://java.sun.com/products/java-media/2D/samples/
-
-
- For a Java2D API Guide & Tutorial:
-
- http://java.sun.com/j2se/1.4/docs/guide/2d/spec/j2d-bookTOC.doc.html
- http://java.sun.com/docs/books/tutorial/2d/
-
-
- For the latest version of the Java2D demo:
-
- http://java.sun.com/products/java-media/2D/
-
- You may send comments via the java2d-comments@sun.com alias,
- which is a one-way alias to Sun's Java 2D API developers, or via the
- java2d-interest@sun.com alias, which is a public discussion list.
-