C++ IDerivedObject::Eval方法代码示例

void MaxAWDExporter::ProcessGeoBlocks()
{
    AWDTriGeom *geoBlock;
    AWDBlockIterator *it;
    int proccessed=0;
    it = new AWDBlockIterator(awd->get_mesh_data_blocks());
    UpdateProgressBar(MAXAWD_PHASE_PROCESS_GEOMETRY, (double)proccessed/(double)awd->get_mesh_data_blocks()->get_num_blocks());
    INodeTab lNodes;
    while ((geoBlock = (AWDTriGeom * ) it->next()) != NULL){
        INode * node = (INode *)INodeToGeoBlockCache->Get(geoBlock);
        if (node==NULL){
            AWDMessageBlock * newWarning = new AWDMessageBlock(geoBlock->get_name(), "ERROR: Could not find the INode for this AWDGeometry.");
            awd->get_message_blocks()->append(newWarning);
            return;
        }
        lNodes.AppendNode( node );
    }

    IGameScene* _pIgame = NULL;
    _pIgame = GetIGameInterface();
    _pIgame->InitialiseIGame( lNodes );
    it->reset();
    while ((geoBlock = (AWDTriGeom * ) it->next()) != NULL){
        INode * node = (INode *)INodeToGeoBlockCache->Get(geoBlock);
        if (node==NULL){
            AWDMessageBlock * newWarning = new AWDMessageBlock(geoBlock->get_name(), "ERROR: Could not find the INode for this AWDGeometry.");
            awd->get_message_blocks()->append(newWarning);
        }
        else{
            int exportThis=false;
            IGameObject * gobj = NULL;
            IGameMesh * igame_mesh = NULL;
            gobj = GetIGameInterface()->GetIGameNode(node)->GetIGameObject();
            if(gobj->GetIGameType()==IGameObject::IGAME_MESH){
                igame_mesh = (IGameMesh*)gobj;
                if (igame_mesh!=NULL){
                    igame_mesh->InitializeData();
                    if(igame_mesh->GetNumberOfFaces()>0){
                        exportThis=true;
                    }
                }
            }
            if (exportThis){
                Object *obj;
                obj = node->GetObjectRef();
                int skinIdx;
                ObjectState os;
                IDerivedObject *derivedObject = NULL;
                skinIdx = IndexOfSkinMod(node->GetObjectRef(), &derivedObject);
                if (skinIdx >= 0) {
                    // Flatten all modifiers up to but not including
                    // the skin modifier.
                    // to do: get the correct time for the neutral-pose
                    os = derivedObject->Eval(0, skinIdx + 1);
                }
                else {
                    // Flatten entire modifier stack
                    // to do: get the correct time for the neutral-pose
                    os = node->EvalWorldState(maxInterface->GetTime());
                }
                obj = os.obj;
                ISkin *skin = NULL;
                if (derivedObject != NULL && skinIdx >= 0) {
                    Modifier *mod = derivedObject->GetModifier(skinIdx);
                    skin = (ISkin *)mod->GetInterface(I_SKIN);
                }
                ExportTriGeom(geoBlock,obj,node,skin, igame_mesh);
                RETURN_IF_ERROR;
            }
        }
        proccessed++;
        UpdateProgressBar(MAXAWD_PHASE_PROCESS_GEOMETRY, (double)proccessed/(double)awd->get_mesh_data_blocks()->get_num_blocks());
    }
    delete it;
    _pIgame->ReleaseIGame();
}

//.........这里部分代码省略.........
						vpoly->getNormal( &vpolyn.x, &vpolyn.y, &vpolyn.z );
						vn += vpolyn;
					}
				}

				// normalize
				float lensqr = vn.lengthSquared();
				if ( lensqr > Float::MIN_VALUE )
					vn *= 1.f / Math::sqrt(lensqr);
				else
					vn = Vector3(0,0,0);

				vmad->addValue( vert->index(), poly->index(), vn.begin(), 3 );
			}
		}

		// re-export mesh points in non-deformed pose if Skin modifier present
		// NOTE: 3ds Mesh must not be used after this, because collapsing can invalidate it
		if ( skin )
		{
			// evaluate derived object before Skin modifier
			TimeValue time = 0;
			bool evalNext = false;
			bool evalDone = false;
			::ObjectState os;
			::Object* obj = node->GetObjectRef();
			while ( obj->SuperClassID() == GEN_DERIVOB_CLASS_ID && !evalDone )
			{
				IDerivedObject* derivedObj = static_cast<IDerivedObject*>(obj);
				for ( int modStack = 0 ; modStack < derivedObj->NumModifiers() ; ++modStack )
				{
					if ( evalNext )
					{
						os = derivedObj->Eval( time, modStack );
						evalDone = true;
						break;
					}

					Modifier* mod = derivedObj->GetModifier(modStack);
					if ( mod->ClassID() == SKIN_CLASSID )
						evalNext = true;
				}
				obj = derivedObj->GetObjRef();
			}

			// evaluate possible non-derived object
			if ( evalNext && !evalDone )
			{
				os = obj->Eval( time );
				evalDone = true;
			}

			// convert to TriObject and get points
			if ( evalDone && os.obj->CanConvertToType( Class_ID(TRIOBJ_CLASS_ID,0) ) )
			{
				Debug::println( "  Evaluating object {0} before Skin modifier", nodeName );

				// get TriObject
				std::auto_ptr<TriObject> triAutoDel(0);
				TriObject* tri = static_cast<TriObject*>( os.obj->ConvertToType( time, Class_ID(TRIOBJ_CLASS_ID,0) ) );
				if ( tri != os.obj )
					triAutoDel = std::auto_ptr<TriObject>( tri );

				// get mesh points before Skin is applied
				//Debug::println( "  Original collapsed mesh has {0} points, before Skin modifier {1} points", mesh->getNumVerts(), tri->mesh.getNumVerts() );
				require( gm->vertices() == tri->mesh.getNumVerts() );