Custom Data Types as output/input from/to a custom component

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Permalink Reply by Andrew Heumann on February 27, 2012 at 8:38pm

I've used the following technique with some success:

For the export of custom data of type CustomDataType:

DA.SetData(0, new GH_ObjectWrapper(CustomDataTypeObject));

and to read it back in, read it in with a generic_param, and 

foreach (GH_ObjectWrapper objWrap in Object_WrapperInputList)
{
CustomDataTypeList.Add(objWrap.Value as CustomDataType);
}

To be smart about it one should probably define a real custom param type, but this seems to do the trick with a minimum of fuss. 

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Permalink Reply by raf2205 on February 28, 2012 at 5:13pm

That works great ! Thanks really much Andrew

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Permalink Reply by raf2205 on March 16, 2012 at 7:30pm

Hi,

just go back to the discussion because I have some issues with the GH_ObjectWrapper.

In my custom class I have some list of geometries like Point3d, Line, Curve and Brep. When I try to read it back I can only read Curve and Brep objects type. Point3d and Line are lost..

Does someone already had such issue ? Does some object Type are not working with the GH_ObjectWrapper?

thanks.

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Permalink Reply by David Rutten on March 17, 2012 at 4:39am

GH_ObjectWrapper is not supposed to work with serialization at all. It's a last ditch effort to allow data of unknown type to participate in a Grasshopper network.

If you want your data to serialize, then you really need to implement IGH_Goo (or derive from GH_Goo<T>). If (de)serialization is not what you meant by "read back in", then you'll need to post some source code so I can have a look at it.

--

David Rutten

david@mcneel.com

Poprad, Slovakia

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Permalink Reply by raf2205 on March 17, 2012 at 9:26am

Hi David, ok it's time to try to implement  IGH_Goo...thanks.

raf

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