Babylon native on Ubuntu

gtudorache · November 27, 2020, 11:50am

It compiles, starts, runs, but it it returns Undefined…

Cedric · November 27, 2020, 12:19pm

You have to return a napi::value, not a string.

Like in this xmlhttprequest :

BabylonJS/BabylonNative/blob/c1f8b9f55d5a63f36012bb3f0bfb83300b32c92c/Polyfills/XMLHttpRequest/Source/XMLHttpRequest.cpp#L113


}
Napi::Value XMLHttpRequest::GetResponse(const Napi::CallbackInfo&)
{
    gsl::span<const std::byte> responseBuffer{m_request.ResponseBuffer()};
    auto arrayBuffer{Napi::ArrayBuffer::New(Env(), responseBuffer.size())};
    std::memcpy(arrayBuffer.Data(), responseBuffer.data(), arrayBuffer.ByteLength());
    return std::move(arrayBuffer);
}
Napi::Value XMLHttpRequest::GetResponseText(const Napi::CallbackInfo&)
{
    return Napi::Value::From(Env(), m_request.ResponseString().data());
}
Napi::Value XMLHttpRequest::GetResponseType(const Napi::CallbackInfo&)
{
    return Napi::Value::From(Env(), ResponseType::EnumToString(m_request.ResponseType()));
}
void XMLHttpRequest::SetResponseType(const Napi::CallbackInfo&, const Napi::Value& value)

gtudorache · November 27, 2020, 12:21pm

I’ve changed it to Napi::Value, the code on the git is not updated yet…

gtudorache · November 30, 2020, 12:17am

Updated the code in the git, for some reason it doesn’t work, it gives true as isUndefined.

Cedric · November 30, 2020, 8:46am

You didn’t define getBuilding for the JS engine only setBuilding.

https://github.com/gtudorache2/BabylonNativeTests/blob/5c5ea2eef5b06516fd7b3f664aa05476bfb86d11/Mouse/Source/Mouse.cpp#L22

so getBuilding is undefined.

gtudorache · November 30, 2020, 8:52am

I don’t use getBuilding in Javascript, only in Java… Should I define it in javascript too ?

Cedric · November 30, 2020, 8:54am

Can you put a breakpoint in setbuilding to be sure it’s called before calling getbuilding?

Cedric · November 30, 2020, 9:13am

Also, can you try to store the value using a native c++ type (std::string?) instead of a napi value.

gtudorache · November 30, 2020, 10:23am

You are right… apparently I was capturing the touch event in java (so setBuilding wasn not called at all), also conversion to std::string (on the java side) made it stop crashing, everything now works properly.

Thank you very much.

gtudorache · December 2, 2020, 7:53am

Can you please refer me to the proper usage of CreateGroundFromHeightMap in Native as it keeps failing.

Cedric · December 2, 2020, 8:36am

Can you please provide the error or a PG? Many features of babylonjs are not supported yet.

gtudorache · December 2, 2020, 8:53am

It fails in the readystatechange of XMLHtttpRequest…

Cedric · December 2, 2020, 9:06am

Can you provide your .js script ? I’ll test it on linux.

gtudorache · December 2, 2020, 9:09am

https://github.com/gtudorache2/BabylonNativeTests/blob/main/assets/Scripts/experience.js

Cedric · December 2, 2020, 9:16am

Do you know the request url that’s failing?

gtudorache · December 2, 2020, 9:18am

This is the URL http://192.168.0.10/3d/assets/images/02.jpg … Which is correct, tested in chrome on the device, it loads the proper image. Tried both as PNG/JPG, with the same result. Below is the image.

Cedric · December 2, 2020, 9:26am

The function createImageBitmap is not implemented yet in BabylonNative. I’ve added an issue:

gtudorache · December 2, 2020, 9:28am

Thank you, I will also take a peak and see if I can get it working…

Cedric · December 2, 2020, 9:39am

The function looks like LoadTexture but returns a uint8array.
A good starting point can be BabylonNative/TestUtils.h at f32e02dde3476e443173443ce422a7e8dc806279 · BabylonJS/BabylonNative · GitHub

Feel free to provide a PR:) I’ll be happy to review it

gtudorache · December 3, 2020, 10:12am

Do you have any idea why this is failing ?

https://github.com/gtudorache2/Android/blob/a5f39cc1bd330695b17802f30e6c84fb7b758435/Plugins/NativeEngine/Source/NativeEngine.cpp#L1477

Also line 141180 of babylon.max.js

PS : I’ve sent you an invite to the new repo… It makes it easier to find files when we have the same file structure.

Topic		Replies	Views
Are there some demo apps with babylon native？ Questions	8	598	December 7, 2021
BabylonReactNative in new react native project that's not the playground Questions	4	1040	May 20, 2021
How to set up Babylon Native project? Questions	3	412	January 6, 2023
Integration of Babylon native in exisiting Application Questions babylon-native , ios	17	100	October 3, 2024
Babylon native load script Questions native	17	1277	August 23, 2023

Babylon native on Ubuntu

Related topics