[Paraview] Property Panel and Inheritance?
B.W.H. van Beest
bwvb at xs4all.nl
Thu Oct 2 12:44:39 EDT 2014
Hm, that is a lot of extra work, especially because the base class
sphParticleProps
has a similar role not only for a box source, but also for sphere, cone,
cylinder, etc.
But one has to live with the given limitations of the tool.
Anyway, thanks.
Bertwim
On 10/02/2014 05:33 PM, Utkarsh Ayachit wrote:
> In other words, just don't use mutliple inheritance. Often you can
> restruture your code to "has-a" instead of "is-a" style. Make
> sphBoxSource subclass vtkCubeSource and have a member variable of
> type SPHParticleProps. For which ever methods from SPHParticleProps
> you want to expose, add those as methods on sphBoxSource and then
> forward those calls explictly to the SPHParticleProps instance.
>
> Utkarsh
>
> On Thu, Oct 2, 2014 at 11:15 AM, B.W.H. van Beest <bwvb at xs4all.nl> wrote:
>> Hi Utkarsh,
>>
>> Not sure how to do that, really in Paraview. The relationshop and
>> dynamics between what is in the xml file, source files I write and
>> generated files by mysterious macros make me still a bit uncomfortable
>> in finding my way in ParaView.
>> Maybe you could a bit more verbose?
>>
>> Regards,
>> Bertwim
>>
>> On 10/02/2014 03:24 PM, Utkarsh Ayachit wrote:
>>> It will only warp the 1 base. I'd suggest using a proxy pattern rather
>>> than multiple inheritance.
>>>
>>> On Thu, Oct 2, 2014 at 9:20 AM, B.W.H. van Beest <bwvb at xs4all.nl> wrote:
>>>> It seems to work. Inheritance of the vtkCubeSource methods just works.
>>>> Also when I reverse the inheritance order, or when I have single
>>>> inheritance (of vtkCubeSource), in the xml-file I can just refer to the
>>>> methods of the base class vtkCubeSource (say SetLength()) and it works.
>>>> But not so for the oher base class!
>>>>
>>>> So I *think* I am using the two baseclasses the same way, the effect
>>>> however, is asymmetrial.
>>>>
>>>> I looked, as you suggested, into sphBoxSourceClientServer.h The
>>>> methods of the baseclasses (vtkCubeSource), e.g. SetXLength(), do not
>>>> show-up there either. But it works, so that might not be the place where
>>>> to look.
>>>>
>>>> Any other ideas?
>>>>
>>>> Regards,
>>>> Bertwim
>>>>
>>>>
>>>>
>>>> On 10/02/2014 02:23 PM, Utkarsh Ayachit wrote:
>>>>> I can't remember if the wrapping code can handle multiple inheritance.
>>>>> If you removed the second superclass, does that work?
>>>>>
>>>>> Also look the sphBoxSourceClientServer.h file generated in your build
>>>>> directory. That will indicate which methods from this class are
>>>>> getting wrapped and which ones aren't.
>>>>>
>>>>> Utkarsh
>>>>>
>>>>> On Thu, Oct 2, 2014 at 6:44 AM, B.W.H. van Beest <bwvb at xs4all.nl> wrote:
>>>>>> Hello, I'm struggling with getting the properties panel right for a new
>>>>>> Source defined in plugin that I'm writing.
>>>>>>
>>>>>> In the class below, I'm extending the VTK class for a rectangular box,
>>>>>> vtkCubeSource. The class also derives from another class,
>>>>>> that has the well known method "foo". I have made corresponding
>>>>>> changes to the server manager file (xml), given below.
>>>>>>
>>>>>> In the xml-file, I can specify the panel entries for the vtkCubeSource,
>>>>>> referring to the methods of this vtk class which are available via
>>>>>> inheritance, for instance "SetXLength(double)". However, when I do the
>>>>>> same for the method "foo(int)" of the other base class, ParaView bombs,
>>>>>> telling me that:
>>>>>>
>>>>>> $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
>>>>>> tkPVSessionCore (0x113a740): Object type: sphBoxSource, could not find
>>>>>> requested method: "foo"
>>>>>> or the method was called with incorrect arguments.
>>>>>>
>>>>>> while processing
>>>>>> Message 0 = Invoke
>>>>>> Argument 0 = vtk_object_pointer {sphBoxSource (0x30fbe00)}
>>>>>> Argument 1 = string_value {foo}
>>>>>> Argument 2 = int32_value {1024}
>>>>>> $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$
>>>>>>
>>>>>> The problem is gone when I provide the derived class also with a method
>>>>>> "foo", which calls the "foo" of the base class.
>>>>>> In short, I can refer, in the panel, to the methods of vtkCubeSource (as
>>>>>> expected due to inheritance), but not for the other base class.
>>>>>> What am I overlooking here, and what do I need to do to have the
>>>>>> expected inheritance?
>>>>>>
>>>>>> Your view
>>>>>> Kind Regards,
>>>>>> Bertwim
>>>>>> ---------------------
>>>>>>
>>>>>>
>>>>>> This is my class:
>>>>>> =====================================
>>>>>> class sphBoxSource : public vtkCubeSource
>>>>>> , public SPHParticleProps
>>>>>> {
>>>>>> public:
>>>>>> static sphBoxSource* New();
>>>>>> vtkTypeMacro(sphBoxSource,vtkCubeSource);
>>>>>>
>>>>>> public:
>>>>>> sphBoxSource( double, double, double );
>>>>>> ~sphBoxSource();
>>>>>>
>>>>>> public: // testing purposes only
>>>>>> void foo( int i ){ SPHParticleProps::foo(i);} // For the Properties
>>>>>> pane,: Why can I can not just inherit the method "foo"?
>>>>>> };
>>>>>> =======================================
>>>>>>
>>>>>> The server manager configuration is taken from "sources.xml" that comes
>>>>>> with ParaView (4.2), but extended with a property for "foo".
>>>>>>
>>>>>> =======================================
>>>>>> <ServerManagerConfiguration>
>>>>>> <ProxyGroup name="sources">
>>>>>> <!--
>>>>>> ==================================================================== -->
>>>>>> <SourceProxy class="sphBoxSource"
>>>>>> label="SPHBox"
>>>>>> name="SPHBoxSource">
>>>>>> ...
>>>>>> <DoubleVectorProperty animateable="1"
>>>>>> command="SetXLength"
>>>>>> default_values="10.0"
>>>>>> name="XLength"
>>>>>> number_of_elements="1"
>>>>>> panel_visibility="default">
>>>>>> <DoubleRangeDomain min="0" name="range" />
>>>>>> <Documentation>This property specifies the length of the box in
>>>>>> the X direction.</Documentation>
>>>>>> </DoubleVectorProperty>
>>>>>>
>>>>>> ....
>>>>>>
>>>>>> <!-- Add gui component for testing purposes -->
>>>>>> <IntVectorProperty command="foo"
>>>>>> default_values="1024"
>>>>>> name="foobar"
>>>>>> number_of_elements="1">
>>>>>> <IntRangeDomain min="0" name="range" />
>>>>>> <Documentation>Just for testing. Does nothing.</Documentation>
>>>>>> </IntVectorProperty>
>>>>>>
>>>>>> <!-- End Box -->
>>>>>> </SourceProxy>
>>>>>> <!--
>>>>>> ==================================================================== -->
>>>>>> </ProxyGroup>
>>>>>> </ServerManagerConfiguration>
>>>>>>
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