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Does anyone know of a convenient way to look up the direct numerical
index of a given parameter name once, so that the name-based lookup can
be performed once, then the numerical index can be used from then on?
Obviously, you could look the parameter up by name and then check each
index-based lookup in a loop to see if it matches, but surely there's a
nicer way. Basically, like a getIndexOf() method is what I'm after.
-Andy
Guy Rabiller wrote:
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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