xr3ngine | end solution for hosting humans | Augmented Reality library
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Trending Discussions on Augmented Reality
I have an iOS app with deployment target iOS 10+, I need to add some features that depend only on RealityKit to appear with users whom their iOS version is 13+, the app compiles and runs successfully on real device but the problem is when archiving for upload to AppStore it generates a Swift file and says:...
ANSWERAnswered 2022-Mar-10 at 15:04
Do not include Reality Composer's
.rcproject files in your archive for distribution.
.rcproject bundles contain the code with iOS 13.0+ classes, structs and enums. Instead, supply your project with USDZ files.
To allow iOS 13+ users to use RealityKit features, but still allow non-AR users to run this app starting from iOS 10.0, use the following code:
I want to use RealityKit's AnchorEntity initialized with an Anchoring Component Target of type Image. Here is what I am trying to do:...
ANSWERAnswered 2022-Jan-08 at 20:36
You can use
AnchorEntity(.image(...)) in SwiftUI almost the same way as you used it in UIKit. At first click
Assets.xcassets in Project Navigator pane and create
AR Resources folder. Drag your image there. Setup its physical size in Inspector. Then copy/paste the code:
Is it possible to import a virtual lamp object into the AR scene, that projects a light cone, which illuminates the surrounding space in the room and the real objects in it, e.g. a table, floor, walls?
For ARKit, I found this SO post.
For ARCore, there is an example of relighting technique. And this source code.
I have also been suggested that post-processing can be used to brighten the whole scene.
However, these examples are from a while ago and perhaps threre is a newer or a more straight forward solution to this problem?...
ANSWERAnswered 2021-Dec-16 at 17:25
At the low level, RealityKit is only responsible for rendering virtual objects and overlaying them on top of the camera frame. If you want to illuminate the real scene, you need to post-process the camera frame.
Here are some tutorials on how to do post-processing: Tutorial1⃣️ Tutorial2⃣️
If all you need is an effect like This , then all you need to do is add a CGImage-based post-processing effect for the virtual object (lights).
More specifically, add a bloom filter to the rendered image(You can also simulate bloom filters with Gaussian blur).
In this way, the code is all around UIImage and CGImage, so it's pretty simple😎
If you want to be more realistic, consider using the depth map provided by LiDAR to calculate which areas can be illuminated for a more detailed brightness.
Or If you're a true explorer, you can use Metal to create a real world Digital Twin point cloud in real time to simulate occlusion of light.
I want to show image from gallery. i am loading the image using imagePicker....
ANSWERAnswered 2021-Dec-12 at 08:44
Try this. Take into consideration, a tint color is multiplied by an image – so, if tint's
RGBA = [1,1,1,1], a result of multiplication will be an image itself (without tinting)...
I am developing a website related to Augmented Reality. But my mobile phone (Samsung Galaxy M02S) is not supported AR. When I try to install ARcore, google play store show an error.
So I installed ARcore using apk and now this app was installed. After that, I checked my mobile phone AR was supported or not. The below notification was shown when I try to see AR.
How I fix this issue and have any other way to install ARcore into my phone?...
ANSWERAnswered 2021-Nov-23 at 13:58
AR Core requires some specific hardware to work. You can check the list of supported devices here. No amount of side loading will help because this is a hardware requirement issue. Moreover AR Core is under active development even if you somehow install a version that might work that version will soon be deprecated and you will start getting the popup saying you need to update.
Kindly use a device that is part of supported list or an Emulator that supports this. IMHO it is best to develop using a device that has support from AR Core team.
I'm facing an issue where
SCNView.hitTest does not detect hits against geometry that I'm modifying dynamically on the cpu.
Here's the overview: I have a node that uses an
SCNGeometry created from a
MTLBuffer of vertices:
ANSWERAnswered 2021-Aug-13 at 15:46
When you perform a hit-test search, SceneKit looks for SCNGeometry objects along the ray you specify. For each intersection between the ray and a geometry, SceneKit creates a hit-test result to provide information about both the SCNNode object containing the geometry and the location of the intersection on the geometry’s surface.
The problem in your case is that when you modify the buffer’s contents (MTLBuffer) at render time, SceneKit does not know about it, and therefore cannot update SCNGeometry object which is used for performing hit-test.
So the only way I can see to solve this issue is to recreate your SCNGeometry object.
I am trying to display a
reality file created using
Reality Composer. The below code works for
usdz but not for
reality. Here is my code
ANSWERAnswered 2021-Jul-26 at 06:44
.reality model from web works fine. You can easily check this in Xcode Simulator:
I am writing an ARKit app where I need to use camera poses and intrinsics for 3D reconstruction.
The camera Intrinsics matrix returned by ARKit seems to be using a different image resolution than mobile screen resolution. Below is one example of this issue
Intrinsics matrix returned by ARKit is :
[[1569.249512, 0, 931.3638306],[0, 1569.249512, 723.3305664],[0, 0, 1]]
whereas input image resolution is 750 (width) x 1182 (height). In this case, the principal point seems to be out of the image which cannot be possible. It should ideally be close to the image center. So above intrinsic matrix might be using image resolution of 1920 (width) x 1440 (height) returned that is completely different than the original image resolution.
The questions are:
- Whether the returned camera intrinsics belong to 1920x1440 image resolution?
- If yes, how can I get the intrinsics matrix representing original image resolution i.e. 750x1182?
ANSWERAnswered 2021-May-28 at 13:28
Intrinsics camera matrix converts between the 2D camera plane and 3D world coordinate space. Here's a decomposition of an intrinsic matrix, where:
fyis a Focal Length in pixels
yOis a Principal Point Offset in pixels
sis an Axis Skew
According to Apple Documentation:
The values fx and fy are the pixel focal length, and are identical for square pixels. The values ox and oy are the offsets of the principal point from the top-left corner of the image frame. All values are expressed in pixels.
So you let's examine what your data is:
I have this function named
addShapes. I want it to create 3 shapes
ANSWERAnswered 2021-May-21 at 04:36
Your code works fine (a position was a problem):
Im converting the ARMeshAnchor data to mesh using SCNGeometrySource which it works fine but sometimes 3/10 I will get a bad_access from SceneKit renderer.
[![enter image description here]]...
ANSWERAnswered 2021-Feb-07 at 11:58
It occurs because
ARMeshAnchorsconstantly update their data as ARKit refines its understanding of the real world. All
ARMeshAnchorsare dynamic anchors. However their mesh's subsequent changes are not intended to reflect in real time.
If you want to duplicate your ARMeshAnchors collection use the following code:
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Install your dependencies cd path/to/xr3ngine yarn install Error with mediasoup? Optional: https://mediasoup.org/documentation/v3/mediasoup/installation/ If on WSL2: sudo apt-get update sudo apt-get install build-essential npm install -g node-gypPYTHON=python3 yarn install npm config set python /usr/bin/python PYTHON=python3 yarn install
Make sure you have a mysql database installed and running -- our recommendation is Mariadb. We've provided a docker container for easy setup: cd scripts && sudo bash start-db.sh This creates a Docker container of mariadb named xr3ngine_db. You must have docker installed on your machine for this script to work. If you do not have Docker installed and do not wish to install it, you'll have to manually create a MariaDB server. The default username is 'server', the default password is 'password', the default database name is 'xr3ngine', the default hostname is '127.0.0.1', and the default port is '3306'. Seeing errors connecting to the local DB? Shut off your local firewall.
Have redis installed and running redis must be running in order for feathers-sync to function; it coordinates feathers actions across servers, e.g. the API server can be notified that the gameserver patched a user. scrips/docker-compose is configured to start a redis container using Docker. Run docker-compose up from the /scripts directory to build + start it, and after that you can run docker start xr3ngine_redis to restart the redis container.
Open a new tab and start the Agones sidecar in local mode cd scripts sudo bash start-agones.sh You can also go to vendor/agones/ and run ./sdk-server.linux.amd64 --local If you are using a Windows machine, run sdk-server.windows.amd64.exe --local and for mac, run ./sdk-server.darwin.amd64 --local
Obtain .env.local file with configuration variable. Many parts of XR3ngine are configured using environment variables. For simplicity, it's recommended that you create a file called .env.local in the top level of xr3ngine, and have all of your ENV_VAR definitions here in the form <VAR_NAME>=<VALUE>. If you are actively working on this project, contact one of the developers for a copy of the file that has all of the development settings and keys in it.
Start the server in database seed mode Several tables in the database need to be seeded with default values. Run cd packages/server, then run yarn dev-reinit-db. After several seconds, there should be no more logging. Some of the final lines should read like this: Executing (default): SELECT 'id', 'name', 'sceneId', 'locationSettingsId', 'slugifiedName', 'maxUsersPerInstance', 'createdAt', 'updatedAt' FROM 'location' AS 'location' WHERE ('location'.'id' = '98cbcc30-fd2d-11ea-bc7c-cd4cac9a8d61') AND 'location'.'id' IN ('98cbcc30-fd2d-11ea-bc7c-cd4cac9a8d61'); Seeded At this point, the database has been seeded. You can shut down the server with CTRL+C.
Open two/three separate tabs and start the API server (non-seeding), gameserver (if using gameservers), and the client In /packages/server, run sudo yarn dev. If you are using gameservers, in another tab go to /packages/gameserver and run sudo yarn dev. In the final tab, go to /packages/client and run sudo yarn dev.
Open a new tab and start local file server (optional) If the .env.local file you have has the line STORAGE_PROVIDER=local then the scene editor will save components, models, scenes, etc. locally (as opposed to storing them on S3). You will need to start a local server to serve these files, and make sure that .env.local has the line LOCAL_STORAGE_PROVIDER="localhost:8642". In a new tab, go to packages/server and run yarn serve-local-files. This will start up http-server to serve files from packages/server/upload on localhost:8642. You may have to accept the invalid self-signed certificate for it in the browser; see 'Allow local file http-server connection with invalid certificate' below.
In a browser, navigate to https://127.0.0.1:3000/location/test The database seeding process creates a test empty location called 'test'. It can be navigated to by going to 'https://127.0.0.1:3000/location/test'. See the sections below about invalid certificates if you are encountering errors connecting to the client, API, or gameserver.
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