Graphics properties as objects

[John W. Eaton]

On  8-Jan-2008, Michael Goffioul wrote:

| What I implicitely meant is that the genprops.awk would
| generate *all* useful accessors. The color_property is probably the
| most tricky one, but you could imagine to generate:
| 
|     bool color_is (const std::string& name) const
|       { return color.is (name); }
| 
|     const double* get_color (void) const
|       { return (color.is_rgb () ? color.rgb () : 0); }

OK.  I agree that we should generate as much of this code as possble
using the AWK script.  How succesful that will be depends on whether
we only have a (relatively) small set of property types.  Is that a
reasonable assumption?

jwe