You're right. Data passed from C# to XSI are marshalled by a COM module supplied by .NET, therefore arrays must be filled with safearray compliant types (i.e. object).
-mab
-----Original Message-----
From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On Behalf Of squid
Sent: February 4, 2007 1:14 PM
To: XSI(at)Softimage.COM
Subject: Re: Q about C# and PolygonMesh.Set
it's the way you are constructing your arrays.
try this :
public bool Execute( Context in_ctxt )
{
try
{
Object in_vertices = new Object[12]{
0,0,0,
0,0,1,
1,0,1,
1,0,0
};
Object in_polygonData = new Object[5] { 4, 0, 1, 2, 3
}; X3DObject oRoot = GetXSI().ActiveSceneRoot as
X3DObject;
X3DObject o = oRoot.AddPolygonMesh(in_vertices, in_polygonData, "aCube");
}
catch (Exception e)
{
Info("Make Flake Died! : " + e);
}
return true;
}
hope that helped.
Jon
squid(at)3d-palace.com
Anthony Rossano wrote:
> Hi Marc-André;
> Thanks - let me know when it gets fixed and I'll test it for you.
> On the scripting demo, if you mean the ability to run simple C# in the
> script editor, Yes! I found that right away and it's a big help!
> Thanks -
> ATR
>
>
> On Sun, 4 Feb 2007 11:48:39 -0500, Marc-André Belzile wrote:
>
>> Hi Anthony,
>>
>> Looks like a safearray handling issue on our end. I'll give it a try.
>>
>> FYI, you can use the C# scripting demo which is really convenient for
>> learning/testing C# with XSI.
>>
>> -mab
>>
>> -----Original Message-----
>> From: owner-xsi(at)Softimage.COM [mailto:owner-xsi(at)Softimage.COM] On
>> Behalf Of Anthony Rossano
>> Sent: February 3, 2007 7:10 PM
>> To: XSI(at)Softimage.COM
>> Subject: Q about C# and PolygonMesh.Set
>>
>> Hi All -
>> I am learning up on the C# SDK in v6.0, which is convenient, mostly.
>> Using the Plug-In view and the SDK_Wizard is awesome.
>>
>> I have been unable, however, to actually MAKE any geometry with it. I
>> can futz with existing points, but using the
>> ActiveSceneRoot.AddPolygonMesh method crashes XSI, or in other cases
>> errors out (though it's in a try/catch loop) as does the
>> PolygonMesh.Set method.
>>
>> I see a bunch of confusing info about what Softimage calls 'output
>> arguments' (as far as I can tell, what I would call 'passing by
>> reference', or 'pointers') but I cannot determine from that what
>> should be wrong with passing arrays of vert indices and polygon data
>> to these functions.
>>
>> Has anyone done this with C#? Where did I go wrong? Or is it just not
>> working in C# and I should use C++ for this sort of thing?
>> Thanks in advance!!
>> ATR
>>
>> #### here's the code....it's running as a command. ####
>>
>>
>> try
>> {
>> //needs in_vertices, in_polygonData, name.
>> String in_bstrName = "myObj";
>> Object in_vertices = new object();
>> Object in_polygonData = new object();
>>
>> //fill the verts (a one dimension array of triplet values
>> Double[] verts = {
>> 0,0,0,
>> 0,0,1,
>> 1,0,1,
>> 1,0,0
>> };
>> in_vertices = verts;
>>
>> //fill the polydata
>> long[] pd = { 4, 0, 1, 2, 3 }; //counterclockwise, and
>> the list is zero based.
>> in_polygonData = pd;
>>
>>
>>
>> // creat the object
>> XSIApplication xsi = GetXSI();
>> Model root = xsi.ActiveSceneRoot; //actually an object of
>> type Model
>> X3DObject o = root.AddPolygonMesh(verts, pd, in_bstrName);
>> //the above fails with a cryptic message. "External
>> component has thrown an exception."
>>
>>
>> X3DObject o2 = root.AddGeometry("cube", "meshSurface",
>> "shizzy");
>> PolygonMesh p =
>> (PolygonMesh)o2.ActivePrimitive.GetGeometry2(1,
>> siConstructionMode.siConstructionModeModeling);
>>
>> p.Set(verts, pd); //also dies:
>> // System.Runtime.InteropServices.SEHException: External
>> component has thrown an exception.
>> // at Softimage.XSIOM.PolygonMesh.Set(Object
>> in_vertices, Object in_polygonData)
>> // at make_flake.Execute(Context in_ctxt)
>>
>>
>> }//end try
>> catch (Exception e) {Info ("make flake died: " + e); };
>>
>>
>>
>> ** Anthony Rossano **
>> * CEO and TD, Mesmer *
>> * http://www.mesmer.com *
>> * anthor(at)mesmer.com *
>> * 206.369.5205 *
>> ***************************
>> ---
>> Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:
>> unsubscribe xsi
>>
>> ---
>> Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:
>> unsubscribe xsi
>>
> ** Anthony Rossano **
> * CEO and TD, Mesmer *
> * http://www.mesmer.com *
> * anthor(at)mesmer.com *
> * 206.369.5205 *
> ***************************
>
> ---
> Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:
> unsubscribe xsi
>
>
>
---
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:
unsubscribe xsi
---
Unsubscribe? Mail Majordomo(at)Softimage.COM with the following text in body:
unsubscribe xsi
