Issue creating nodes in API [C++]

[Anonymous]

I'm learning and I compiled the ApiMesh example all went ok etc.

On that example a mel script is providen to test it

createNode apiMesh;
createNode apiMeshCreator;
connectAttr apiMeshCreator1.outputSurface apiMesh1.inputSurface ;

But I cannot replicate that on C++, I tried with the most logical idea:

//create mesh
MDagModifier dgMod;
MObject oApiMesh = dgMod.createNode(apiMesh::id, MObject::kNullObj, &status);
CHECK_MSTATUS_AND_RETURN_IT(status);
status = dgMod.doIt();

//create mesh creator
MDGModifier dgbMod;
MObject oApiMeshCreator = dgbMod.createNode(apiMeshCreator::id, &status);
CHECK_MSTATUS_AND_RETURN_IT(status);
status = dgbMod.doIt();

//connect them
apiMeshCreator* myMeshCreator = (apiMeshCreator*)&oApiMeshCreator;
apiMesh* myMesh = (apiMesh*)&oApiMesh;
dgMod.connect(oApiMeshCreator, myMeshCreator->outputSurface, oApiMesh, myMesh->inputSurface);
status = dgMod.doIt();

But nothing happens, notice that I used MDGModifier to create the apiMeshCreator (it inherits from MPxNode) since using MDagModifier the plugin crashes.

Any idea? Thank you in advance

[Anonymous]

Hi

In the past this is what I have done to create Meshes in Maya:

First create a Transform object -- because all Meshes need a transform reference:

Then I created a Mesh via MFnMesh.

Then I updated the DGs.  and it worked for me.

MObject meshTransformObj = dgModifier.createNode("transform");

MFnDependencyNode dpNode(meshTransformObj);
dpNode.setName("meshTransform");

MFnMesh mesh;
mesh.create((int)uniquePositionsList.size(), (int)triangles, mPointArray, polygonCounts, polygonConnects, uArray, vArray, meshTransformObj);

mesh.setName("Mesh");

...

dagModifier.doIt();

dgModifier.doIt();