Function Node (new in Intera 5.5) : Rethink Robotics

This page provides a detailed overview about the Function Node, which will be implemented in Intera 5.5.

Contents
Node Description
Node Editor
Example

Node Description

Function 5 1.png

Function Node

This node provides a coding interface for performing simple calculations or String operations using native JavaScript code with:

Variables: Boolean, Integer, Float and String, Arrays and Structures.
JSON parsing and output.

Node Type

Primitive - Cannot have children.

Node Editor

Function step 2.jpg Function step 1.jpg

Snippet select

Select a snippet from available snippets

Snippet Symbol (Or “+” Symbol)'

Create a new or Edit selected snippet

TEST Button

Test selected snippet

Inputs

link user variables or other shared data to be input to your snippet

Inputs

link user variables or other shared data to be output from your snippet

Documentation

Inherits documentation from the snippet editor

Snippet Editor Window

Save Button

save your snippet

Name

A user friendly name of your snippet

Define Parameters - In:
- Add a new input parameter with the “+” sign
- give a name to the parameter (can start only with a letter, not a number).
- Select the parameter’s type: (String, Boolean, Integer, Float, Length, Linear Force, Torque, Speed, Time, Mass, Angle, Acceleration, Stiffness, Voltage, Percentage)
Define Parameters - Out
- Add a new ouput parameter with the “+” sign
- Give a name to the parameter (can start only with a letter, not a number).
- Select the parameter’s type: (String, Boolean, Integer, Float, Length, Linear Force, Torque, Speed, Time, Mass, Angle, Acceleration, Stiffness, Voltage, Percentage)
Code Window

In this window you can add your code (between “let” and “return” commands). The window will show any syntax errors interactively with “i” and “x” icons in the problematic line.

Dark\Light Toggle

Switch the code window colors between dark scheme and light scheme.

Validate snippet

A tool to test and validate your snippet with test data you can type. A pass will result in green “V” and a fail in red “X”.

Documentation

Document in free text what this specific snippet does.

Example

Create new user variables “min_var”, “max_var” and “random_var” (all should be defined as integers).
Create new snippet (using Extension Gallery or Function node) with these settings

Function step 5.jpg

The code should be:

function RandomMinAndMax() {
    let min, max;
    let random;
    random = Math.floor(Math.random() * (max - min + 1) ) + min;
    return {
random, // int
    };
}