std::pair< EntityNode*, EntityInstanceNode*> EntityNode::CreateInstance( const Asset::EntityInstancePtr& entity )
{
EntityNode* artClass = &Get( entity->GetEntity()->GetPath() );
M_EntityNode::iterator instItor = artClass->m_Instances.find( entity->m_ID );
EntityInstanceNode* entityNode = NULL;
if( instItor == artClass->m_Instances.end() )
{
MFnDagNode nodeFn;
MObject instanceObject = nodeFn.create( EntityInstanceNode::s_TypeID, entity->GetName().c_str() );
nodeFn.setDoNotWrite( true );
entityNode = static_cast< EntityInstanceNode* >( nodeFn.userNode() );
artClass->m_Instances[ entity->m_ID ] = entityNode;
entityNode->SetBackingEntity( entity );
entityNode->Show( *artClass );
}
else
{
entityNode = instItor->second;
entityNode->SetBackingEntity( entity );
}
return std::pair< EntityNode*, EntityInstanceNode* >( artClass, entityNode );
}
void EntityInstanceNode::SetBackingEntity( const Asset::EntityInstancePtr& entity )
{
m_Entity = entity;
m_UID = m_Entity->m_ID;
m_Plug.setAttribute( s_ArtFilePath );
m_Plug.setValue( MString (entity->GetEntity()->GetPath().c_str()) );
Math::Matrix4 gm = m_Entity->m_GlobalTransform * s_RelativeTransform.Inverted();
MMatrix mat;
gm.t.x *= 100.0f;
gm.t.y *= 100.0f;
gm.t.z *= 100.0f;
for (int i=0; i<4; i++)
{
for (int j=0; j<4; j++)
{
mat[i][j] = gm[i][j];
}
}
MFnTransform transFn( thisMObject() );
MTransformationMatrix transMat (mat);
transFn.set(transMat);
AddAttributeChangedCallback();
}