[fpc-pascal] Next language feature for pas2js...

[Ryan Joseph]

> On May 1, 2018, at 11:27 AM, Michalis Kamburelis <michalis.kambi at gmail.com> wrote:
> 
> I suspect that we will have a unit like WebGL in pas2js that exposes
> the necessary JS functions for Pascal applications.

Sure but how does the porting process look? I’m reading the wiki and it looks like it wraps JavaScript classes by doing stuff like:

TJSFunction = class external name 'Function'(TJSObject)

where “Function” is the JavaScript class name. 

Looking at https://developer.mozilla.org/en-US/docs/Web/API/WebGL_API I see WebGLRenderingContext has the entire OpenGL API (I think). Does that mean we just do something like:

const
  GLfloat = MAP_TO_SOMETHING; // do we have external consts?

type
  TWebGLRenderingContext = class external name 'WebGLRenderingContext' (TJSObject)
    procedure clearColor (red, green, blue, alpha: GLfloat); external name 'clearColor';
  end;

var
  context:
begin
  context := GetCurrentContext; // document.getElementById(‘canvas’).getContext()
  context.clearColor(0, 0, 0, 0);

Regards,
	Ryan Joseph