[F-Script-talk] Re: OpenGL functions in f-script?

[Philippe M. <pm...@ac...>]

Alas, no plan currently to implements access to OpenGL functions from=20
F-Script.
As you experienced, F-Script only allows you to invoke Objective-C=20
methods, not C functions. In general, when you need to interface to=20
specific C functions from F-Script, it is relatively easy, for=20
Objective-C programmers, to wrap C-function with Objective-C methods=20
and call the latter from F-Script. This might be tedious if you need to=20=

wrap a large set of C functions, tough.

Best,

Phil

Le 21 f=E9vr. 04, =E0 01:17, Philippe de Rochambeau a =E9crit :

> Philippe,
>
> do you have any plans to implement the OpenGLfunctions  in FScript?
>
> I have tried to code tutorial0, which is available here=20
> http://divide.zerobyzero.ca/, in FScript, but to no avail because the=20=

> OpenGL gl... functions are not accessible.
>
> Here's my code (the bottom part is untranslated Objective-C) for=20
> illustrative purposes, in case anyone is interested.
>
> -------------
>
> scrWidth :=3D NSScreen mainScreen visibleFrame size width.
> scrHeight :=3D NSScreen mainScreen visibleFrame size height.
> winWidth :=3D 400.
> winHeight :=3D 400.
> "Centrer"
> winX :=3D (scrWidth / 2) - (winWidth / 2).
> winY :=3D (scrHeight / 2) - (winHeight / 2).
>
> "Instantiate and configure a window"
> window :=3D NSWindow alloc initWithContentRect:(winX<>winY=20
> extent:winWidth<>winHeight)
> 	styleMask:NSTitledWindowMask + NSClosableWindowMask+
> 		NSMiniaturizableWindowMask + NSResizableWindowMask
> 	backing:NSBackingStoreBuffered defer:NO.
>
> "Put the window on screen"
> window orderFront:nil.
>
> "Give a title to the window"
> window setTitle:'Currency Converter'.
>
> nsgl :=3D NSOpenGLView alloc.
> nsgl initWithFrame:winX<>winY winWidth<>winHeight .
>
> "Initialization"
> nsglFormat :=3D NSOpenGLPixelFormat.
> "NSOpenGLPixelFormatAttribute est juste un =E9num=E9ration de =
constantes"
> attr :=3D {
>         NSOpenGLPFADoubleBuffer,
>                 NSOpenGLPFAAccelerated,
>                 NSOpenGLPFAColorSize, BITS_PER_PIXEL,
>                 NSOpenGLPFADepthSize, DEPTH_SIZE,
>         0 }.
>
>
> nsgl setPostsFrameChangedNotifications:YES.
>
> nsglFormat :=3D (NSOpenGLPixelFormat alloc) initWithAttributes:attr.
> nsgl pixelFormat:nsglFormat.
>
> nsglFormat :=3D nil.
>
> (nsgl openGLContext) makeCurrentContext).
>
> "initGL method"
>
> glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
>
> // Set the clear depth to 1. This is the initial (default) value.
> // Set the depth function. This specifies when something will be =
drawn.
> // GL_LESS passes if the incoming
> // depth value is LESS than the current value
> // Turn the depth test on
>
> glClearDepth(1.0f);
> glDepthFunc(GL_LESS);
> glEnable(GL_DEPTH_TEST);
>
> // Set up a hint telling the computer to create the nicest (aka=20
> "costliest" or "most correct")
> // image it can
> // This hint is for the quality of color and texture mapping
>
> glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
>
> // This hint is for antialiasing
>
> glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST);
>
> ---------=