How run needle-endine run in background?

🌵 Needle Engine
1

How run needle-endine run in background ? like unity

2

To run Needle Engine in the background similar to Unity’s batch mode, you can leverage command line options. Here’s a high-level overview of the steps you could follow:

  1. Command-Line Execution: Use the command line to initiate the project build or run it directly without a GUI.
  2. Batch Mode: Make sure your script or command line includes options like -batchmode or specific commands to execute your builds without opening a window.

Here is an example pseudocode plan on how to run Needle Engine in the background:

function runNeedleEngineInBackground(projectPath):
    define command as "path/to/NeedleEngineExecutable -batchmode -projectPath projectPath"
    execute command
    if execution is successful:
        print "Needle Engine is running in the background"
    else:
        print "Failed to run Needle Engine"

In a practical application, you would replace "path/to/NeedleEngineExecutable" and projectPath with your actual file paths and necessary parameters.

Code Example

Here’s how you might execute this in a command line context, assuming you have Node.js set up:

npm run your-script -- -batchmode -projectPath "path/to/your/project"

This script will trigger the Needle Engine to run in a background mode similar to Unity.

Make sure to check the detailed command-line options and ensure your scripts handle any output or errors properly as you implement this in your project (see the documentation).

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3

“run in background” in webgl

4

To run Needle Engine for WebGL in the background, you can utilize the WebXR features along with the Needle Engine functionalities. Here’s anoverview of how to do that:

Steps to Run Needle Engine in the Background for WebGL

  1. Setup WebXR: Ensure that you include the WebXR component in your needle-engine setup to handle XR sessions properly.

  2. Background Rendering: Utilize properties like background-blurriness for your <needle-engine> element to control the visual experience during presentation or AR/VR sessions.

  3. Code Implementation:
    Add your WebXR Context and manage rendering in the background by using the scene and camera to refresh the background appropriately.

Pseudocode Example

Here’s a generic outline of starting the scene in a background mode for WebGL:

function initializeWebGLBackground() {
    initializeWebXR();
    setupScene();
    while (isRunning) {
        updateScene();
        renderScene();
        manageBackground(); // Apply any background logic
    }
}

function manageBackground() {
    // Adjust properties such as background color or blurriness here
    context.mainCameraComponent.backgroundBlurriness = 0.5;
}

Code Snippet Example

Here is a simplified code snippet for implementation:

import { WebXR, RemoteSkybox, addComponent } from "@needle-tools/engine";

window.addEventListener('load', () => {
    const context = initializeNeedleEngine();
    
    // Setup XR
    addComponent(context.scene, WebXR, {
        createARButton: true,
        createQRCode: true,
    });

    // Manage Background
    addComponent(context.scene, RemoteSkybox, {
        url: "studio",
        environment: true,
        background: true,
    });

    // Start rendering loop
    renderLoop();
});

function renderLoop() {
    requestAnimationFrame(renderLoop);
    // Render your scene
    context.renderer.render(context.scene, context.camera);
}

This setup allows for a smooth background running environment in your WebGL application, ideally for augmented or virtual reality contexts (see the documentation) (see the documentation).

Feel free to ask for more specific functionalities or code examples!

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5

Set runInBackground to true on the needle engine context:

e.g. in your main.ts

onInitialized(ctx => ctx.runInBackground = true);

of from a component’s start/awake method:

export class YourCustomComponent extends Behaviour {
  awake() {
     this.context.runInBackground = true;
  }
}

^ both work and do the same. Note that when the browser tab becomes inactive the website will not update anymore either way.

6

How when the browser tab becomes inactive?