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Custom Applets Finally, the values of the director and Clock actor parameters are coupled to these top-level parameters by the lines director.stopTime.setExpression("stopTime"); clock.period.setExpression("clockPeriod"); The expressions being set here can be much more elaborate. The expression language is documented in the Data Package chapter. Here, the expressions each contain a single variable reference, referring to the top-level parameters by name. In order for the top-level parameters to appear in the controls of an applet, we must configure the HTML file as shown in figure 8.9. The line accomplish the objective. The result of invoking the appletviewer on the HTML file in figure 8.9 is shown in figure 8.10. 8.3.6 Adding Custom Actors The intent of Ptolemy II is to have a reasonably rich set of actors in the actor libraries. However, it is anticipated that model builders will often need to define their own, custom actors. This is relatively easy to do, as discussed in the Designing Actors chapter. By convention, when a specialized actor is created for a particular applet or application, we store that actor in the same directory with the applet or application, rather than in the actor libraries. The actor libraries are for generic, reusable actors. 8.3.7 Using Jar Files A jar file is a Java Archive File that contains multiple .class files. Applets that are being downloaded over the net will start up more quickly if all the relevant Java .class files are collected together into one or more jar files. This dramatically reduces the number of HTTP transactions. Models in the Ptolemy II demo directories typically use three separate jar files: ptolemy/ptsupport.jar — A jar file containing classes from ptolemy.kernel, ptolemy.actor and other packages, see $PTII/ptolemy/makefile for a complete list; \ \ \ No Java Plug-in support for applet, see http://java.sun.com/products/plugin/ FIGURE 8.9. The HTML that displays model parameters for the applet user to control. This file can be found in $PTII/doc/tutorial/TutorialApplet3.htm 242 Ptolemy II
Custom Applets ptolemy/domains/domain/domain.jar — A domain specific jar file such as de.jar, where domain is replaced by a domain name; ptolemy/domains/domain/demo/Demo/Demo.jar — A model-specific jar file. Models with sophisticated GUIs that use Listeners can result in multiple .class files per .java file, so having a jar file can help download speeds. The third jar file is not needed if the model resides in a single .class file. To use jar files, you must modify the HTML shown in figure 8.2 to read as shown in figure 8.11. An important downside of using jar files is that during Java development, one must regenerate the jar files each time a Java file is recompiled. If you are developing an applet, you may want to avoid using jar files, or only include jar files that are from packages that are not actively being developed. How Jar files are built. To know which jar files in the Ptolemy II tree you might need for your applet, you need to know how the jar files are constructed. The short story is that every package has a jar file that includes subpackages. Since the package structure mirrors the directory structure, it is easy to FIGURE 8.10. Result of running the applet of figure 8.8 with horizontal layout, and including the top-level parameters. No Java Plug-in support for applet, see http://java.sun.com/products/plugin/ FIGURE 8.11. An HTML segment that modifies that of figure 8.2 to use jar files. This text can be found in $PTII/doc/tutorial/tutorialApplet4.htm. Heterogeneous Concurrent Modeling and Design 8-243
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PTOLEMY II HETEROGENEOUS CONCURRENT
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VOLUME 1 INTRODUCTION TO PTOLEMY II
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Volume 1 Contents Introduction to P
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2.10.3. Constructing Modal Models 8
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7. MoML 191 7.1. Introduction 191 7
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1 Introduction Author: Edward A. Le
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Introduction heterochronous dataflo
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Introduction A major emphasis in Pt
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Introduction determine when actors
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Introduction provides levels of vis
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Introduction is a guard, and the se
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Introduction well. All of these are
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Introduction clients to update thei
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Introduction will be supplied with
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Introduction 1.3.12 Synchronous Dat
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Introduction FIGURE 1.10. Refinemen
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Introduction occlusions due to terr
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Introduction tion. The overall arch
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Introduction kernel.attributes This
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Introduction 1.5.2 Overview of Key
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Introduction Actor interfaces are k
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Heterogeneous Concurrent Modeling a
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Introduction actor actor.gui data.e
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Introduction cient, scalable, and u
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Introduction 1.5.8 Future Capabilit
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Introduction Appendix A: UML — Un
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Introduction grams, the only constr
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2 Using Vergil Authors: Edward A. L
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Using Vergil 2.2.2 Executing a Pre-
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Using Vergil The Lorenz attractor m
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Using Vergil The Continuous-Time (C
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Using Vergil box in figure 2.11. En
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Using Vergil Don’t panic! Excepti
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Using Vergil tions are a normal par
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Using Vergil 2.4 Hierarchy Ptolemy
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Using Vergil Then using these ports
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Using Vergil the default 0.1 to 0.0
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Using Vergil pan window, it is easy
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Using Vergil FIGURE 2.33. The pan w
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Using Vergil we have modified the c
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Using Vergil model, simply copy (or
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Using Vergil A key issue is to deci
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Using Vergil instances. This proble
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Using Vergil quick tour for more de
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Using Vergil uses the index in the
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Using Vergil AddSubtract actor, and
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Using Vergil If you look inside the
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Using Vergil If you look inside the
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Using Vergil transition (or right c
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Using Vergil Once you have created
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Using Vergil The grid is turned off
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Authors: Edward A. Lee Xiaojun Liu
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Expressions classes to create a gen
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Expressions The % operation is a mo
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Expressions attribute, which includ
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Expressions 3.3.5 State Machines Ex
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Expressions whose value is an array
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Expressions from it. For instance,
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Expressions defined. For example, >
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Expressions length is given by the
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Expressions Thus, for example, you
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Expressions number. With one additi
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Expressions value. For example, fix
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Expressions In the example in figur
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Expressions A.2 Basic Mathematical
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Expressions A.3 Matrix, Array, and
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Expressions A.5 Signal Processing F
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Expressions TABLE 8: Functions perf
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4 Actor Libraries Authors: Elaine C
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Actor Libraries properly in the CT
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Actor Libraries ing that multiple c
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Actor Libraries TypedAtomicActor «
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Actor Libraries SequenceScope (exte
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Actor Libraries UnsignedByteArrayTo
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Actor Libraries MobileFunction (ext
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Actor Libraries LogicFunction (exte
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Actor Libraries Sleep (extends Tran
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Actor Libraries VariableFIR (extend
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Actor Libraries Integrator: Integra
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Actor Libraries Figure 4.4 shows th
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5 Designing Actors Authors: Christo
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Designing Actors /** Javadoc commen
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Designing Actors although with most
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Designing Actors import ptolemy.act
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Designing Actors makes such actors
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Designing Actors same parameter val
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Designing Actors morphic actor comp
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Designing Actors To get data polymo
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Designing Actors public class Seque
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Designing Actors be used in domains
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Designing Actors alComm actor. Beca
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Designing Actors attribute has valu
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Designing Actors import ptolemy.act
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6 Coding Style Authors: Christopher
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Coding Style /* One line descriptio
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Coding Style Copyright (c) 2004 The
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Coding Style @version $Id: NamedObj
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Coding Style } We use instead the i
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Coding Style * @exception MyExcepti
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Coding Style + "it does not impleme
Page 201 and 202: Authors: Edward A. Lee Steve Neuend
Page 203 and 204: MoML cutes it forever, until you hi
Page 205 and 206: MoML A second difference between ou
Page 207 and 208: MoML
Page 209 and 210: MoML 7.3.3 Names and Classes Most M
Page 211 and 212: MoML Here, the element named
Page 213 and 214: MoML implement. 7.3.7 Doc Element S
Page 215 and 216: MoML It is also sometimes necess
Page 217 and 218: MoML then there will be a link t
Page 219 and 220: MoML found. For example, if the cla
Page 221 and 222: MoML it cannot collide with the nam
Page 223 and 224: MoML The rendering of the icon is d
Page 225 and 226: MoML 7.4.5 Deleting Entities, Relat
Page 227 and 228: MoML This unlinks a port from the s
Page 229 and 230: MoML model. The EntityLibrary class
Page 231 and 232: MoML Suppose that using incremental
Page 233 and 234: MoML Generate a sine wave.
Page 235 and 236: MoML
Page 237 and 238: MoML Number of iterations in
Page 239 and 240: MoML -P- The f
Page 241 and 242: MoML -P- The phase,
Page 243 and 244: 8 Custom Applets Authors: Edward A.
Page 245 and 246: Custom Applets html code, see the J
Page 247 and 248: Custom Applets public class Tutoria
Page 249 and 250: Custom Applets then the result of
Page 251: Custom Applets 8.3.5 Using Model Pa
Page 255 and 256: References [1] G. Agha, Actors: A M
Page 257 and 258: [33] S. A. Edwards, “The Specific
Page 259 and 260: [67] E. Kohler, The Click Modular R
Page 261 and 262: [95] J. Liu, X. Liu, T. J. Koo, B.
Page 263 and 264: [132]W. R. Sutherland, "The on-Line
Page 265 and 266: Glossary abstract syntax ..........
Page 267 and 268: Ptolemy II ........................
Page 269 and 270: Index Symbols - in UML 41 # in UML
Page 271 and 272: coin flips 142 Color class 173 colo
Page 273 and 274: entity in XML 198 EntityLibrary cla
Page 275 and 276: Director class 159 inverse FFT 124
Page 277 and 278: CompositeEntity class 206 nextPower
Page 279 and 280: safety 34 SampleDelay actor 78, 138
Page 281 and 282: type constraint 155 type constraint
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