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Actor Libraries TimedSinewave (composite actor) Output samples of a sinusoidal waveform taken at current time (when the actor is fired). Note that to generate a continuous-time sine wave in the CT domain you probably want to use ContinuousSinewave instead. TriggeredClock (extends Clock): This actor is an extension of Clock with a start and stop input. A token at the start input will start the clock. A token at the stop input will stop the clock, if it is still running. To generate a continuous-time clock, you will likely want to use TriggeredContinuousClock instead; that version produces two outputs at the transition times, one with the old value and one with the new. VariableClock (extends Clock): An extension of Clock with an input to dynamically control the period. NOTE: This actor will likely be replaced at some point by a version of Clock with a period PortParameter. Sequence Sources InteractiveShell (extends TypedAtomicActor): This actor creates a command shell on the screen, sending commands that are typed by the user to its output port, and reporting strings received at its input by displaying them. Each time it fires, it reads the input, displays it, then displays a command prompt (which by default is ">>"), and waits for a command to be typed. The command is terminated by an enter or return character, which then results in the command being produced on the output. Interpolator (extends SequenceSource): Produce an output sequence by interpolating a specified set of values. This can be used to generate complex, smooth waveforms. Pulse (extends SequenceSource): Produce a sequence of values at specified iteration indexes. The sequence repeats itself when the repeat parameter is set to true. This is similar to the Clock actor, but it is not timed. Whenever it is fired, it progresses to the next value in the values array, irrespective of the current time. Ramp (extends SequenceSource): Produce a sequence that begins with the value given by init and is incremented by step after each iteration. The types of init and step are required to support addition. Sinewave (composite actor): Output successive samples of a sinusoidal waveform. This is a sequence actor. The timed and continuous versions are TimedSinewave and ContinuousSinewave respectively. SketchedSource (implements SequenceActor): Output a signal that has been sketched by the user on the screen. 4.3.2 Sinks Sink actors are the ultimate destinations for tokens. Sink actors have no outputs, and include actors that display data in plots, textual form, or tables. Many of these actors are shown in figure 4.3, which shows a UML static structure diagram. Several of these sinks have both time-based and sequence-based versions. TimedPlotter, for example, displays a plot of its input data as a function of time. SequencePlotter, by contrast, ignores current time, and uses for the horizontal axis the position of an input token in a sequence of inputs. XYPlotter, on the other hand, uses neither time nor sequence number, and therefore implements neither TimedActor nor SequenceActor. All three are derived from Plotter, a base class with a public member, plot, which implements the plot. This base class has a fillOnWrapup parameter, which has a boolean value. If the 132 Ptolemy <strong>II</strong>
Actor Libraries TypedAtomicActor «Interface» SequenceActor Source «Interface» ChangeListener «Interface» Placeable Sink +output : TypedIOPort +input : TypedIOPort(multiport) +place(c : Container) SketchedSource Plotter SliderSource MatrixVisualizer HistogramPlotter +dataSet : IntToken +length : IntToken +period : IntToken +fillOnWrapup : Parameter(BooleanToken) +legend : StringAttribute +plot : Plot +startingDataset : Parameter(IntToken) +maximum : Parameter(IntToken) +minimum : Parameter(IntToken) +slider : Jslider +title : StringAttribute +input : TypedIOPort(IntToken, multi) +xMax : Parameter(DoubleToken) +xMin : Parameter(DoubleToken) +yMax : Parameter(DoubleToken) +yMin : Parameter(DoubleToken) +binOffset : Parameter(DoubleToken) +binWidth : Parameter(DoubleToken) +fillOnWrapup : Parameter(BooleanToken) +histogram : Histogram +input : TypedIOPort(DoubleToken) +legend : StringAttribute FIGURE 4.3. Organization of actors in the ptolemy.actor.lib.gui package. Heterogeneous Concurrent Modeling and Design 133 MatrixViewer Display RealTimePlotter +height : Parameter(IntToken) +input : TypedIOPort(MatrixToken) +width : Parameter(IntToken) +columnsDisplayed : Parameter(IntToken) +rowsDisplayed : Parameter(IntToken) +textArea : JTextArea +title : StringAttribute «Interface» TimedActor +input : TypedIOPort(DoubleToken, multi) SequencePlotter XYPlotter TimedPlotter +input : TypedIOPort(DoubleToken, multi) +xInit : Parameter(DoubleToken) +xUnit : Parameter(DoubleToken) +inputX : TypedIOPort(DoubleToken, multi) +inputY : TypedIOPort(DoubleToken, multi) +input : TypedIOPort(DoubleToken, multi) BarGraph SequenceScope XYScope TimedScope +input : TypedIOPort(arrays of double) +iterationsPerUpdate : Parameter +width : Parameter(IntToken) +persistence : Parameter(IntToken) +persistence : Parameter(IntToken) +width : Parameter(DoubleToken) +persistence : Parameter(DoubleToken)
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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
Page 91 and 92: Using Vergil AddSubtract actor, and
Page 93 and 94: Using Vergil If you look inside the
Page 95 and 96: Using Vergil If you look inside the
Page 97 and 98: Using Vergil transition (or right c
Page 99 and 100: Using Vergil Once you have created
Page 101 and 102: Using Vergil The grid is turned off
Page 103 and 104: Authors: Edward A. Lee Xiaojun Liu
Page 105 and 106: Expressions classes to create a gen
Page 107 and 108: Expressions The % operation is a mo
Page 109 and 110: Expressions attribute, which includ
Page 111 and 112: Expressions 3.3.5 State Machines Ex
Page 113 and 114: Expressions whose value is an array
Page 115 and 116: Expressions from it. For instance,
Page 117 and 118: Expressions defined. For example, >
Page 119 and 120: Expressions length is given by the
Page 121 and 122: Expressions Thus, for example, you
Page 123 and 124: Expressions number. With one additi
Page 125 and 126: Expressions value. For example, fix
Page 127 and 128: Expressions In the example in figur
Page 129 and 130: Expressions A.2 Basic Mathematical
Page 131 and 132: Expressions A.3 Matrix, Array, and
Page 133 and 134: Expressions A.5 Signal Processing F
Page 135 and 136: Expressions TABLE 8: Functions perf
Page 137 and 138: 4 Actor Libraries Authors: Elaine C
Page 139 and 140: Actor Libraries properly in the CT
Page 141: Actor Libraries ing that multiple c
Page 145 and 146: Actor Libraries SequenceScope (exte
Page 147 and 148: Actor Libraries UnsignedByteArrayTo
Page 149 and 150: Actor Libraries MobileFunction (ext
Page 151 and 152: Actor Libraries LogicFunction (exte
Page 153 and 154: Actor Libraries Sleep (extends Tran
Page 155 and 156: Actor Libraries VariableFIR (extend
Page 157 and 158: Actor Libraries Integrator: Integra
Page 159 and 160: Actor Libraries Figure 4.4 shows th
Page 161 and 162: 5 Designing Actors Authors: Christo
Page 163 and 164: Designing Actors /** Javadoc commen
Page 165 and 166: Designing Actors although with most
Page 167 and 168: Designing Actors import ptolemy.act
Page 169 and 170: Designing Actors makes such actors
Page 171 and 172: Designing Actors same parameter val
Page 173 and 174: Designing Actors morphic actor comp
Page 175 and 176: Designing Actors To get data polymo
Page 177 and 178: Designing Actors public class Seque
Page 179 and 180: Designing Actors be used in domains
Page 181 and 182: Designing Actors alComm actor. Beca
Page 183 and 184: Designing Actors attribute has valu
Page 185 and 186: Designing Actors import ptolemy.act
Page 187 and 188: 6 Coding Style Authors: Christopher
Page 189 and 190: Coding Style /* One line descriptio
Page 191 and 192: 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
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Authors: Edward A. Lee Steve Neuend
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MoML cutes it forever, until you hi
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MoML A second difference between ou
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MoML
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MoML 7.3.3 Names and Classes Most M
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MoML Here, the element named
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MoML implement. 7.3.7 Doc Element S
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MoML It is also sometimes necess
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MoML then there will be a link t
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MoML found. For example, if the cla
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MoML it cannot collide with the nam
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MoML The rendering of the icon is d
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MoML 7.4.5 Deleting Entities, Relat
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MoML This unlinks a port from the s
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MoML model. The EntityLibrary class
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MoML Suppose that using incremental
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MoML Generate a sine wave.
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MoML
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MoML Number of iterations in
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MoML -P- The f
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MoML -P- The phase,
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8 Custom Applets Authors: Edward A.
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Custom Applets html code, see the J
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Custom Applets public class Tutoria
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Custom Applets then the result of
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Custom Applets 8.3.5 Using Model Pa
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Custom Applets ptolemy/domains/doma
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References [1] G. Agha, Actors: A M
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[33] S. A. Edwards, “The Specific
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[67] E. Kohler, The Click Modular R
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[95] J. Liu, X. Liu, T. J. Koo, B.
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[132]W. R. Sutherland, "The on-Line
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Glossary abstract syntax ..........
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Ptolemy II ........................
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Index Symbols - in UML 41 # in UML
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coin flips 142 Color class 173 colo
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entity in XML 198 EntityLibrary cla
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Director class 159 inverse FFT 124
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CompositeEntity class 206 nextPower
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safety 34 SampleDelay actor 78, 138
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type constraint 155 type constraint
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