* These map more naturally to python tuples and are easier to wrap in and out.
* We also tidy up the FloatVecVal etc and standardise the members of
ShaderValue.
* This is to support python bindings - the pyside implementation of
QVector, QString, etc is not available to SWIG, so SWIG treates these
all as opaque types.
* Rather than trying to set up bindings that work for rdcarray and
QList/QVector, or implementing separate bindings, we instead just say
that the public interface must use the rdc types. In most cases they
seamlessly convert to/from Qt types anyway.
* In a couple of places we use an array of pairs instead of a map. In
future we probably want an rdcdict or rdcmap with proper dict bindings
in python.
* Previously we would convert from python to C++ arrays immediately by
copying, and vice-versa convert TO python immediately by creating a
new python list by copying.
* This however behaves rather poorly in common situations, e.g.:
> foo.bar.append(5)
Would not append 5 to foo.bar, but copy foo.bar to a temporary, append
5 to it, then destroy it leaving foo.bar untouched.
* Instead we leave the C++ array type as a pointer for as long as we can
and instead implement the python sequence API as extensions/slots that
work in-place on the original array.
baldurk