Sorry for this typo,
the line
RS.RS.AddCurve([[54,3.0],[2,34,0],[23,45,0]]) # set of NURBS control point
in my last post should be read as
RS.AddCurve([[54,3.0],[2,34,0],[23,45,0]]) # set of NURBS control point
2010/4/1 Аlkin Nasuf <nasufs...@gmail.com>
> Great !
>
> Thank you very much for this patch Thomas !
>
> I can confirm that the patch works as expected, I have applied it to my
> dynamic.py file.
>
> For everyone planing to use python to control Rhinoceros scripting
> interface by using provided com object, I would suggest you to use comtypes
> instead of pywin32. The difference is that comtypes can pass 1D safearray,
> thus making possible drawing of NURBS curve in Rhino provided that the
> coordinates of control points are previously available. For example :
>
> from comtypes.client import CreateObject
>
> R = CreateObject("Rhino4.Application")
> RS = R.GetScriptObject
> RS._FlagAsMethod("AddPoint", "AddCurve") # Here you specify the functions
> you gonna use. This works after applying current patch. This patch enables
> you to use all functions as
> RS.RS.AddCurve([[54,3.0],[2,34,0],[23,45,0]]) # set of NURBS control point
>
> Once again thank you Thomas, well done!
> I was trying to implement similar patch but got lost in the code.
>
> Cheers,
> Alkin
>
>
> On 31 March 2010 21:31, Thomas Heller <thel...@ctypes.org> wrote:
>
>> Аlkin Nasuf schrieb:
>> > Hi Thomas,
>> >
>> > First of all thank you for the response, I really need to get around
>> this
>> > issue.
>> >
>> > The com object, I am dispatching, is provided by Rhinoceros CAD package.
>> The
>> > evaluation version of Rhinoceros can be obtained from here -
>> > http://download.rhino3d.com/rhino/4.0/evaluation/download/
>> > . The evaluation is quite liberal, since you can use it as much as you
>> like,
>> > but you are restricted to 15 saves only.
>> >
>> > I am using this object to control VB functions provided by Rhino
>> scripting
>> > interface.
>> >
>> > You can reproduce the problem by:
>> >
>> > 1. R = CreateObject("Rhino4.Application")
>> > 2. RS = R.GetScriptObject
>> > 3. RS.AddPoint([10.0,10.0,10.0])
>> >
>> > At this point I should obtain all functions provided by RhinoScript type
>> > library as methods, but all I get are attributes e.g.
>> >
>> >>>> RS.AddPoint([10.0,10.0,10.0])
>> > Traceback (most recent call last):
>> > File "<stdin>", line 1, in ?
>> > TypeError: 'NoneType' object is not callable
>> >
>> > , where RS.AddPoint() is the function I am calling.
>> >
>> > I presume that all functions in R.GetScriptObject are flagged as
>> attributes
>> > instead of methods, note that R.visible =True works. In PyWin32 I used
>> to
>> > flag each attribute as methods with _FlagAsMethod(attribute name)
>> function.
>> >
>> > I hope I was able to describe the problem as much as I can.
>>
>> Very clear description, and very helpful - thanks.
>>
>> This simple patch should do the trick (the docstring is stolen from
>> win32com):
>>
>> <snip>
>> Index: comtypes/client/dynamic.py
>> ===================================================================
>> --- comtypes/client/dynamic.py (revision 572)
>> +++ comtypes/client/dynamic.py (working copy)
>> @@ -58,6 +58,7 @@
>> def __init__(self, comobj):
>> self.__dict__["_comobj"] = comobj
>> self.__dict__["_ids"] = {} # Tiny optimization: trying not to use
>> GetIDsOfNames more than once
>> + self.__dict__["_methods"] = set()
>>
>> def __enum(self):
>> e = self._comobj.Invoke(-4) # DISPID_NEWENUM
>> @@ -85,7 +86,23 @@
>> "QueryInterface is forwarded to the real com object."
>> return self._comobj.QueryInterface(*args)
>>
>> + def _FlagAsMethod(self, *names):
>> + """Flag these attribute names as being methods.
>> + Some objects do not correctly differentiate methods and
>> + properties, leading to problems when calling these methods.
>> +
>> + Specifically, trying to say: ob.SomeFunc()
>> + may yield an exception "None object is not callable"
>> + In this case, an attempt to fetch the *property*has worked
>> + and returned None, rather than indicating it is really a method.
>> + Calling: ob._FlagAsMethod("SomeFunc")
>> + should then allow this to work.
>> + """
>> + self._methods.update(names)
>> +
>> def __getattr__(self, name):
>> + if name.startswith("__") and name.endswith("__"):
>> + raise AttributeError(name)
>> ## tc =
>> self._comobj.GetTypeInfo(0).QueryInterface(comtypes.typeinfo.ITypeComp)
>> ## dispid = tc.Bind(name)[1].memid
>> dispid = self._ids.get(name)
>> @@ -93,6 +110,11 @@
>> dispid = self._comobj.GetIDsOfNames(name)[0]
>> self._ids[name] = dispid
>>
>> + if name in self._methods:
>> + result = MethodCaller(dispid, self)
>> + self.__dict__[name] = result
>> + return result
>> +
>> flags = comtypes.automation.DISPATCH_PROPERTYGET
>> try:
>> result = self._comobj.Invoke(dispid, _invkind=flags)
>> </snip>
>>
>> If it works for you I can commit it to the repository.
>>
>> --
>> Thanks,
>> Thomas
>>
>>
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>
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