Thanks for the help,
Forgive me if I'm wrong, but FindObjects is not an object model function, and using ExecuteCommand will report a line in the Message Window. I don't want to have hundreds of info messages passing by when moving a window.
A Display Callback is programmed in C++ so how do I call FindObjects without using ExecuteCommand and displaying messages?
Also in my test when using ExecuteCommand it is slower then FindChildren. This is probably caused by the messages I get every frame.
5.3Hz vs 7.8Hz with 37 nulls and nothing visible.
Confused...
Using indices instead of parameter names is a little faster, but not by much. I'm not reading that many parameters (~10)
Do you think it might be faster to traverse the scene by myself? This would prevent the creation of a CRefArray every time I re-display... or would it.
Hans.
>-----Original Message-----
>From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM]
>On Behalf Of Stephen Blair
>Sent: Saturday, March 04, 2006 00:58
>To: XSI(at)Softimage.COM
>Subject: RE: Display Callback Performance
>
>{5FC0CCAE-3DC8-11D0-9449-00AA006D3165} will find all 3d
>objects eg nulls, lights, camera root.
>
>Do this to get the null primitives, then you can get the nulls
>via the Parent property.
>var oNullPrimitives = FindObjects( null,
>"{7DD91AA2-89D8-11D0-A75C-00AA00BB6238}" );
>
>-----Original Message-----
>From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM]
>On Behalf Of Guy Rabiller
>Sent: March 3, 2006 10:52 AM
>To: XSI(at)Softimage.COM
>Subject: Re: Display Callback Performance
>
>Hi Hans,
>
>regarding the MyProperty.GetParameterValue() part, you should
>try to use array indices on parameters ref array.
>
>CParameterRefArray oParams( MyProperty.GetParameters() );
>
>Then get the values directly:
>
>CValue oVal1( Parameter(oParams[0]).GetValue() );
>
>Of course you should seek for the right parameter index, but
>on known Properties, it should be persistent.
>( That said, you'll need to re-check this after a new XSI
>version is released ).
>
>You should see significant speed boost.
>( I got ~30% speed increase on our fluids simulation plugins
>with this ).
>
>Also, avoid Find at all cost. Better use a
>GetProperties().GetItem( L"MyProp" ) then check if the CRef is
>of ClassID siPropertyID ( or siCustomPropertyID ).
>
>For finding objects you might try the CLSID path rather than
>the FindChildren one, albeit I didnt run extensive tests on this one.
>( using the FindObjects Command with the CLSID of the Null
>Class - for instance - wich is
>{5FC0CCAE-3DC8-11D0-9449-00AA006D3165} ).
>
>Let me know.
>
>--
>guy rabiller | 3d technical director (at) LaMaison
>
>
>Hans,Veenendaal,AMplus R&D,SOJ a écrit :
>> Hello All,
>>
>> I've created a Display Callback that adds visualization for a Custom
>> Property connected to nulls.
>>
>> When I create several of those nulls the performance really drops,
>> while I'm not drawing anything heavy.
>>
>> Statistics: 37 Nulls (Hidden)
>> No Display Callback: 60.0 Hz. [Nothing is Drawn except for
>> standard view]
>> With Display Callback: 7.8 Hz. [Nothing is Drawn except for
>> standard view]
>>
>> Statistics: 37 Nulls (Visible)
>> No Display Callback: 60.0 Hz. [All Nulls Visible]
>> With Display Callback: 4.8 Hz. [All Nulls Visible and as little
>> as possible attributes drawn]
>> With Display Callback: 4.8 Hz. [All Nulls Visible and all
>> possible attributes drawn]
>>
>> I suspect that I take the performance hit on getting stuff
>out of XSI...
>>
>> Maybe somebody can tell me whether there are faster methods than the
>> ones I'm using:
>>
>> Get Scene Root with :
>> Model SceneRoot = app.GetActiveSceneRoot();
>>
>> Find the nulls with:
>> nulls = SceneRoot.FindChildren(NULL, L"null", empty); // This is
>> probably painful.
>>
>> Get the properties of the nulls with:
>> CRefArray props = obj.GetProperties();
>>
>> Find Visibility Property
>> CRef o;
>> if(props.Find(L"visibility", o) == CStatus::OK)
>>
>> Find Parameter with
>> CValue val = Visibility.GetParameterValue(L"viewvis");
>>
>> Find my Property
>> if(props.Find(L"MyProperty", o) == CStatus::OK)
>>
>> Find Parameter with
>> CValue val1 = MyProperty.GetParameterValue(L"param1"); // This also
>> seems less than optimal.
>> CValue val2 = MyProperty.GetParameterValue(L"param2");
>> CValue val3 = MyProperty.GetParameterValue(L"param3");
>> CValue val4 = MyProperty.GetParameterValue(L"param4");
>> CValue val5 = MyProperty.GetParameterValue(L"param5");
>> CValue val6 = MyProperty.GetParameterValue(L"param6");
>>
>> Get null global Position with:
>> Kinematics Kine = obj.GetKinematics();
> // This
>> also seems a bit elaborate.
>> KinematicState Global = Kine.GetGlobal();
>MATH::CTransformation Trans
>> = Global.GetTransform(); double x,y,z;
>> Trans.GetTranslationValues(x,y,z);
>> Any help is welcome. Thanks.
>>
>> Hans.
>>
>>
>> ---------------------------------------
>> Hans van Veenendaal,
>> Sega AM plus
>>
>
>
>
>
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