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luasitdown

odd const

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void Node::validateHierarchy( bool forceUpdate ) const //   here are problem
{
	if ( (m_flag & NODE_WORLDDIRTY) || forceUpdate )
	{
		// compute model->world transform
		Node* parent = this->parent();
		if ( parent )
			m_worldTransform = parent->m_worldTransform * m_localTransform;
		else
			m_worldTransform = m_localTransform;
		
		m_flag &= ~NODE_WORLDDIRTY;
		forceUpdate = true;
	}

	std::vector<Node*>::iterator it, begin, end;
	begin = m_child.begin();//   here are problem
	end = m_child.end();

	for ( it = begin;it != end; it++)
		it.validateHierarchy( forceUpdate );
}

If I use const ,C2679 error up. why???

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A const member function automatically treats all member variables as const. Furthermore, you can only call other const member functions (or static member functions).

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Another thing:


// This is not good. You're using the post-increment operator even tho you
// you're not interested in its return value at all. Use the more efficient
// pre-incremement operator instead.
//for ( it = begin;it != end; it++) // not good
for ( it = begin;it != end; ++it ) // better
it.validateHierarchy( forceUpdate );

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