Build a .wasm Class using WebAssembly

[PATurmel (Paul)]

There is a good description here for building a wasm using HAXE and WebAssembly

https://groups.google.com/forum/#!topic/haxelang/Pcm38LPFjW0

I want a class file similar to the one at this example on Github ( which does not use HAXE )

alexnoz/wasm-class-sample

[PATurmel (Paul)]

Anyone?

The problem is how to use the WebAssembly (Emscripten) ‘Embind’ to pass the variables.
Or how to make a public function with HAXE but not have it as a class, maybe.
If someone could steer me to some documentation on this topic I would greatly appreciate it.

[damoebius (david mouton)]

Hey, i tried do find a way to do it few month ago but i failed.

Haxe and Emscripten

God, it’s too hard for me, i give up. I tryed to wrap again my haxe class but i couldn’t do a valid instance. obj = new ::hxcpp::ScreenPressor_obj(width,height); -> error: no matching constructor for initialization of ‘::hxcpp::ScreenPressor_obj’ OR obj = ::hxcpp::ScreenPressor_obj::__alloc( HX_CTX ,(int)960,(int)540); -> Error: ./src/hxcpp/Main.cpp:29:50: error: use of undeclared identifier ‘_hx_ctx’ obj = ::hxcpp::ScreenPressor_obj::__alloc( HX_CTX ,(int)960,(int)540); ^ haxelib/…

Issue: Embind

I hope you’ll have more success

[PATurmel (Paul)]

Come to think, it may not be practical for HAXE to use a C++ class since issues such as memory management would require knowing how the class is used.

[jeremyfa (Jérémy Faivre)]

Come to think, it may not be practical for HAXE to use a C++ class since issues such as memory management would require knowing how the class is used.

See there: https://kripken.github.io/emscripten-site/docs/porting/connecting_cpp_and_javascript/embind.html#memory-management

It’s fine to expose a C++ class instance to JS as long as the JS side explicitly calls obj.delete() once it’s done with it.