Chapter 30: Creating Program Scripts

Understanding Script Nodes

Defining an Interface

Defining a Program Script

Controlling Program-Script Behavior

Writing Java and JavaScript Program Scripts

Accessing Interface Fields and EventOuts

Converting between Data Types

Delivering Events

Responding to Multiple Events

Accessing the Browser

The Script Node Syntax

The Java and JavaScript APIs

Experimenting with Scripts

Creating an Interpolator

Figure 30.1


A moving red sphere and a custom interpolator.

Creating a Sine-Wave Interpolator

Creating a Helical Interpolator

Building a Boolean Event Filter

Figure 30.2


A filter used to make a group of radio buttons that select among backgrounds.

Building a Time-Stamp Filter

Figure 30.3


A pair of filters used to create a momentary on-off switch.

Building a Route Debugger

Figure 30.4


A debug filter used to monitor the output of a TimeSensor node.

Controlling a Shape with a Program Script

Figure 30.5


A donut shape built with a donut-maker program script.

Summary