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A JSON array is an ordered list of items — for example ["apple", "cherry", "banana"]. The nodes on this page let you build arrays, add to them, read items back out, inspect them, and turn them into plain text you can store, send, or print. What's on this page...

A JSON object is a collection of named fields — for example {"name": "Sam", "age": 42}. Each field has a name (sometimes called a key) and a value. The nodes on this page let you build objects, set or read fields by name, inspect them, and turn them into plain...

A Transform describes where something sits in the 3D scene and how it is oriented. It is made of three parts: a position (called translation), a rotation (which way it is turned), and a scale (how large it is). The nodes on this page convert a Transform to and...

A device attribute is a named value saved on the device the experience is running on — a PC, a phone or tablet, a standalone VR headset, and so on. You give each value a name (for example language) and store a piece of text under it. These values belong to the...

The Color node gives you a single color value that you can feed into any other node that needs a color. What it does This node provides a color you pick yourself. The node shows the color as a small swatch you can click to open a color picker — a color whe...

These nodes work with true/false values — the yes/no answers your scene produces, such as whether a door is open, a switch is on, or a trainee is standing in the right place. An operator takes one or two of these true/false values and works out a new one, so y...

The nodes on this page report on SimLab’s VR assembly system. They are states: each one keeps an eye on a single part and continuously reports a simple true/false answer about where that part is in the assembly — for example “is it this part’s turn to be put o...

The nodes on this page are states. Each one keeps an eye on part of your scene and continuously reports a simple true/false answer about it — for example “are these two objects touching?” or “is the viewer standing inside this area?” A state is not an action y...

These nodes read and change the size of a 3D object. Size is given as three numbers — X, Y, and Z — each a multiplier of the object’s original size: 1 means unchanged, 2 means twice as big, 0.5 means half. Most come in two forms: a world version that uses the ...

These nodes read and change how a 3D object is turned in your scene. An object’s rotation is given as three numbers — Pitch, Yaw, and Roll — measured in degrees (90 = a quarter turn). Most come in two forms: a world version that uses the object’s orientation i...

These two nodes let one participant in a shared VR session follow along with another — for example so a trainee can shadow an instructor, or an instructor can keep an eye on a trainee. Start with Observe User and end with Stop Observing. Observe User Lets...

Every object in your scene can carry extra pieces of information called attributes — small named values you attach to an object and read back later. Attributes can also be grouped into named categories, which lets one object keep separate attributes that share...

These nodes work with a part’s assembly state in a VR assembly. In SimLab’s assembly system a part moves through three stages — think of a screw: all the way out (fully disassembled), dropped into place but not tightened (partially assembled), or tightened all...

These are event nodes for SimLab’s VR assembly system. Each one watches a single part and fires the moment something happens to that part in the assembly — for example the moment it becomes fully assembled, or the moment it becomes this part’s turn to be put o...

SceneState Applied Reacts the moment a saved scene state is switched on in your scene. What it does A scene state is a saved arrangement of your scene — which objects are shown or hidden, where they sit, the materials they use, and so on. This node watches...

Nodes for working with variables — the named values your scene keeps and reuses, each holding a number, a piece of text, or a time. Cast Variable Checks whether a variable holds the kind of value you expect, and only passes it along when it does. What it ...

These events fire when a user picks up or lets go of a scene object in VR. Use them to react the moment an object is grabbed or released — for example to highlight a tool when it is held, or reset it when it is put down. Each event also tells you which user ...

These events fire when a user points at or moves away from a scene object in VR (without grabbing it). Use them to react as an object is hovered — for example to highlight it, show a label, or hide that hint again when the user looks elsewhere. Each event also...