> void
> p(vec3f *v)
> {
> printf("%f, %f, %f\n", v->x, v->y, v->z);
> }
This is indeed not supported, since it would require "converters with
write-back".
vec3f const* v
should work, but
ve3f* v
doesn't because the missing const indicates that you want to modify the pointee
in place.
For a Python tuple this can definitely not work since tuples are immutable.
It could in theory work for a Python list, but Boost.Python doesn't support
this.
A few years ago we had extensive discussions about this, but it was too hard to
implement.
Ralf
P.S.: I'm using this seasoned file for all "list/tuple/iter <-> small C++
array" conversions:
http://cctbx.svn.sourceforge.net/viewvc/cctbx/trunk/scitbx/boost_python/container_conversions.h?view=markup
Probably, all you need is
tuple_mapping_fixed_capacity<vec3f>
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