[Rcpp-devel] c++ graphics device

[Dirk Eddelbuettel]

(resending, this time to list as well, sorry --Dirk)

On 26 March 2010 at 07:44, Romain Francois wrote:
| Hello,
| 
| R's graphics device drivers are currently written using poor man's c++: 
| you are supposed to create a pDevDesc struct (defined in 
| R_ext/GraphicsDevice.h) and then fill it with function pointers, e.g 
| (from the NULL device) :
| 
|      /*
|       * Device functions
|       */
|      dev->close = NULL_Close;
|      dev->activate = NULL_Activate;
|      dev->deactivate = NULL_Deactivate;
|      dev->size = NULL_Size;
| 
| I'd like (not now, but sometime) to encapsulate this into C++ so that 
| writing a device would more naturally be done by deriving some class 
| rather than the pseudo c++ done in C implementation.
| 
| I believe this could help people implement other graphics devices using 
| c++ idioms.

Are there such people?  ;-) 
 
| Should this go into Rcpp (I think I prefer this option) or should it be 
| some other package (RcppGD, or something).

Not sure.  If we add it, we add a burden of more unit tests etc for something
few users may use.  If we do not add it, we scatter packages further.  Can be
argued either way.

Dirk

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