Re: [Flightgear-devel] Feature request: Canvas dynamic image from Nasal

[James T. <ja...@fl...>]

> On 5 Feb 2019, at 12:30, Nikolai Verner Christensen <emp...@gm...> wrote:
> 
> I sorta gave up on making this. My C++ is not good enough to do it.
> So, I am hoping somebody else will step up and make this method.
> This is how far I got (inside simgear/canvas/elements/CanvasImage.cxx)
> 
>   //----------------------------------------------------------------------------
>   void Image::setPixelBlock(int s, int t, int w, int h, float [] *data)
>   {
>     osg::Image img = _texture->getImage();
>     osg::Image subImg = new osg::Image();
>     subImg->setImage(w,h,1, GL_RGBA, GL_RGBA, GL_FLOAT, data, osg::Image::AllocationMode->USE_MALLOC_FREE,1);
>     img->copySubImage(s,t,1,subImg);
>   }

I’m wanting to take this forward since I’ve love to get a working TERRain mode on the 737 MAP display.

Is this one function the only API you need added, or is there more context? Especially, so I can test?

Kind regards,
James