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digitalmars.D.learn - Programming on OSX

reply Joel Christensen <joelcnz gmail.com> writes:
I've got an Mac with OSX. But I have a few problems with using it with D.

1. I haven't got any media programming going.
2. The readln (etc) isn't much good, same problem as Linux. It can only 
add characters and remove characters from the end.
Dec 30 2011
parent reply Jacob Carlborg <doob me.com> writes:
On 2011-12-31 00:50, Joel Christensen wrote:

 I've got an Mac with OSX. But I have a few problems with using it with D.

 1. I haven't got any media programming going.


Could you please elaborate. Derelict is a library that contains bindings 
for OpenGL, OpenAL, SDL and DevIL among others.


 2. The readln (etc) isn't much good, same problem as Linux. It can only
 add characters and remove characters from the end.



-- 
/Jacob Carlborg
Dec 31 2011
parent reply Joel Christensen <joelcnz gmail.com> writes:
On 01-Jan-12 3:27 AM, Jacob Carlborg wrote:

 On 2011-12-31 00:50, Joel Christensen wrote:

 I've got an Mac with OSX. But I have a few problems with using it with D.

 1. I haven't got any media programming going.


 Could you please elaborate. Derelict is a library that contains bindings
 for OpenGL, OpenAL, SDL and DevIL among others.


Thanks for replying Jacob.

I looked up Derelict and it seem to say Derelict's SDL didn't work with 
OSX yet. I haven't done much digging though. I'm more interested in 
Allegro5 working with OSX, there's one Allegro library that works with 
Windows and Linux, but not OSX.

On a bit different note. What's the differences with a library, a 
wrapper, and a binding?


 2. The readln (etc) isn't much good, same problem as Linux. It can only
 add characters and remove characters from the end.
Jan 01 2012
parent reply Mike Parker <aldacron gmail.com> writes:
On 1/1/2012 7:38 PM, Joel Christensen wrote:

 On 01-Jan-12 3:27 AM, Jacob Carlborg wrote:

 On 2011-12-31 00:50, Joel Christensen wrote:

 I've got an Mac with OSX. But I have a few problems with using it
 with D.

 1. I haven't got any media programming going.


 Could you please elaborate. Derelict is a library that contains bindings
 for OpenGL, OpenAL, SDL and DevIL among others.


 Thanks for replying Jacob.

 I looked up Derelict and it seem to say Derelict's SDL didn't work with
 OSX yet. I haven't done much digging though. I'm more interested in
 Allegro5 working with OSX, there's one Allegro library that works with
 Windows and Linux, but not OSX.


DerelictSDL works fine on Mac. The Derelict 2 branch also has a binding 
for Allegro 5 which should work on Mac after a minor update. I'm using 
the DerelictAllegro binding for a couple of projects right now.



 On a bit different note. What's the differences with a library, a
 wrapper, and a binding?


A /library/ is a collection of resuable code. SDL and Allegro5 are 
libraries.

A /binding/ is a kind of library that provides a bridge to use a library 
written in a language different from what it was written with.The 
details of how that happens depends entirely on the language the binding 
is written for. For example, in Java, bindings to C or C++ libraries are 
effectively wrappers, because of the way the bindings must be written. 
But in D, because it is compatible with the C ABI, bindings can be 
one-to-one. Meaning, as long as a C function or type has a declaration 
in D, it can be used in D. Derelict is an example of a binding (well, 
several bindings).

A /wrapper/ is a kind of library that encloses an existing library in a 
different interface. Usually, it's a free function interface being 
wrapped in an object-oriented interface. For example, Allegro is written 
in C. A D (or C++) wrapper might be written to give it an 
object-oriented interface, as long as it had a binding to work with. In 
other words, it allows you to do this (:

Bitmap bmp = new Bitmap();

instead of this:

ALLEGRO_BITMAP* bmp = al_create_bmp(...);

So to use a wrapper of a C library in D, you would have this setup:

C Library -> D binding library (allows C functions to be called in D) -> 
D Wrapper library (giving an object oriented interface) -> application

Of course, the wrapper could also be the binding.

Personally, I think wrappers are a waste of time, but some people prefer 
them to using a C API directly.
Jan 01 2012
next sibling parent "Jakob Ovrum" <jakobovrum gmail.com> writes:
On Sunday, 1 January 2012 at 11:54:46 UTC, Mike Parker wrote:

 Personally, I think wrappers are a waste of time, but some 
 people prefer them to using a C API directly.


I agree for wrappers that mindlessly provide a different syntax 
for the same functionality, but wrappers can take advantage of 
more advanced language features to provide better safety, 
genericity or brevity than the original. These are the wrappers 
that are worth writing and worth using.
Jan 01 2012
prev sibling next sibling parent reply Joel Christensen <joelcnz gmail.com> writes:
Thanks very much Mike. I guess I've got a bit of a wrapper over a binding.

I'll look more into Derelict for Mac OSX.
Jan 01 2012
parent Mike Parker <aldacron gmail.com> writes:
On 1/2/2012 6:10 AM, Joel Christensen wrote:

 Thanks very much Mike. I guess I've got a bit of a wrapper over a binding.

 I'll look more into Derelict for Mac OSX.


If it's DerelictAllegro you're using, then you need to know this. 
Derelict loads libraries manually (via dlopen on Posix systems). This 
means you have to do this in your code for each binding you want to use:

DerelictAllegro.load();

This will use preconfigured paths to load the libraries. Currently, 
DerelictAllegro is only configured to load on Windows. I need to figure 
out how it is typically installed on OSX so I can pass the correct paths 
to the loader. It should just be a matter of a quick Google, but it 
might be a few hours yet before I can get to it.

In the meantime, the load method accepts a string parameter if you want 
to load a specific library. So you can do this for now:

DerelictAllegro.load("path");

... where path is the framework/dylib/so, whatever the case may be. 
Aside from that, the rest should just work.
Jan 01 2012
prev sibling parent reply "Joel" <joelcnz gmail.com> writes:
On Sunday, 1 January 2012 at 11:54:46 UTC, Mike Parker wrote:

 On 1/1/2012 7:38 PM, Joel Christensen wrote:

 On 01-Jan-12 3:27 AM, Jacob Carlborg wrote:

 On 2011-12-31 00:50, Joel Christensen wrote:

 I've got an Mac with OSX. But I have a few problems with 
 using it
 with D.

 1. I haven't got any media programming going.


 Could you please elaborate. Derelict is a library that 
 contains bindings
 for OpenGL, OpenAL, SDL and DevIL among others.


 Thanks for replying Jacob.

 I looked up Derelict and it seem to say Derelict's SDL didn't 
 work with
 OSX yet. I haven't done much digging though. I'm more 
 interested in
 Allegro5 working with OSX, there's one Allegro library that 
 works with
 Windows and Linux, but not OSX.


 DerelictSDL works fine on Mac. The Derelict 2 branch also has a 
 binding for Allegro 5 which should work on Mac after a minor 
 update. I'm using the DerelictAllegro binding for a couple of 
 projects right now.


I seem to get SDL to work, but not OpenGL. I copied it's frame 
work from system some where to another frameworks place. I've got 
XCode installed.

P.S. I wont have OSX for a while soon, (getting a new computer). 
Also lost my previous login password, so I've started a new one.

[snip]
Jan 01 2012
parent "Joel" <joelcnz gmail.com> writes:
[snip]


 I seem to get SDL to work, but not OpenGL. I copied it's frame 
 work from system some where to another frameworks place. I've 
 got XCode installed.


Hmm. I had a go at another test program I found and got it 
working.

Graphics with D on OSX, so now that's Windows, Ubuntu, and now 
OSX. Just one solid colour, mind.

[snip]
Jan 01 2012