dat-gui component

Overview

You may be familiar with dat.GUI from the THREE.js documentation, for example pages like this: https://threejs.org/docs/index.html#api/en/geometries/BoxGeometry

This component dynamically creates a dat.GUI panel to view and adjust the properties of all components on an A-Frame entity, like this:

There are some limitations (see below), but for the most part, this should just work for any A-Frame entity & component. It is a bit like A-Frame inspector, but doesn't require pausing the scene, and allows you to focus on just a few specific entities.

Schema

This component currently has no schema.

In future we may offer a schema to filter in/out specific components/properties, or control the appearance of the dat.GUI panel.

Installation

Via CDN

<script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/dat-gui.min.js"></script>

Or via npm

npm install aframe-dat-gui

Usage

Just add the dat-gui component to any entity, to display an entity's components and settings.

For example, this...

<a-torus color="red" dat-gui></a-torus>

... will result in a panel like this appearing in the top right of the screen.

You can add the dat-gui component to multiple entities in the scene, and each will appear as a collapsible folder in the dat.GUI panel.

Limitations

At this point, there are quite a few limitations. Requests, feedback and PRs are welcome.

• Testing & usage so far is limited, so early users may run into problems. No isolation of errors, so if it hits a bug, there's a fair chance it will crash the whole scene.
• The dat-gui component checks which components and properties exist when it is initialized. It doesn't check again. You can force a refresh by removing and re-adding the component, but there's no auto-refresh, and no way to refresh through the UI yet.
• Support for schema extension is limited. There is support for the different properties associated with different geometry primitives. There is no support for additional material properties associated with different shaders.
• No support yet for ranges (min & max values on properties)
• Currently supported schema types are: boolean, color, int, number, string, vec2, vec3, vec4, selector
• No support yet for arrays, selectorAll, assets and related (map, model, audio).
• No control for position / styling of dat.GUI panel. Some of this can probably be done using CSS, but I haven't looked at how to best do that yet.
• When the panel fills the screen, there is a scroll bar, but the Close controls button is awkwardly placed, often blocking one of the properties. Seems like a dat.GUI bug, but perhaps I'm doing something wrong here...
• This only works in desktop mode, not in AR/VR. There has been some work to provide similar functionality todat.GUI in VR in the past, see here and here, but nothing alive at the moment.
• In theory, it should be possible to bring up a dat.GUI control panel for entities dynamically when selected with a mouse pointer (using raycasting/cursor). This would be a nice example/demo to build, but I didn't get to it yet.

Examples

Torus example

Also more examples in the \tests\ folder.

Code

dat-gui