enum NodeFlags
{
/** Node is enabled. */
NODE_ENABLED = 1,
/** Node is renderable. */
NODE_RENDERABLE = 2,
/** Node world transform is dirty. */
NODE_WORLDTMDIRTY = 4,
/** Node was rendered in last frame. */
NODE_RENDEREDINLASTFRAME = 8,
/** Default flags for node. */
NODE_DEFAULTS = -1
};
void Node::setEnabled( bool enabled )
{
m_flag &= ~NODE_ENABLED;
if ( enabled )
m_flag |= NODE_ENABLED;
}
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void Node::setEnabled( bool enabled )
{
m_flag &= ~NODE_ENABLED;
if ( enabled )
m_flag |= NODE_ENABLED;
}
m_flag &= ~NODE_ENABLED;
This line's effect is to clear the NODE_ENABLED bit while leaving the rest of the bits in m_flag the same.
then if enabled is true, the NODE_ENABLED bit is set.
the function is equivalent to:
if ( enabled )
m_flag |= NODE_ENABLED;
else
m_flag &= ~NODE_ENABLED;
{
m_flag &= ~NODE_ENABLED;
if ( enabled )
m_flag |= NODE_ENABLED;
}
m_flag &= ~NODE_ENABLED;
This line's effect is to clear the NODE_ENABLED bit while leaving the rest of the bits in m_flag the same.
then if enabled is true, the NODE_ENABLED bit is set.
the function is equivalent to:
if ( enabled )
m_flag |= NODE_ENABLED;
else
m_flag &= ~NODE_ENABLED;
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