bool Gadget::visible( Gadget *relativeTo )
{
Gadget *g = this;
while( g && g != relativeTo )
{
if( !g->getVisible() )
{
return false;
}
g = g->parent<Gadget>();
}
return true;
}
void LinearContainer::calculateChildTransforms() const
{
if( m_clean )
{
return;
}
int axis = m_orientation - 1;
V3f size( 0 );
vector<Box3f> bounds;
for( ChildContainer::const_iterator it=children().begin(); it!=children().end(); it++ )
{
const Gadget *child = static_cast<const Gadget *>( it->get() );
if( !child->getVisible() )
{
continue;
}
Box3f b = child->bound();
if( !b.isEmpty() )
{
for( int a=0; a<3; a++ )
{
if( a==axis )
{
size[a] += b.size()[a];
}
else
{
size[a] = max( size[a], b.size()[a] );
}
}
}
bounds.push_back( b );
}
size[axis] += (bounds.size() - 1) * m_spacing;
float offset = size[axis] / 2.0f * ( m_direction==Increasing ? -1.0f : 1.0f );
int i = 0;
for( ChildContainer::const_iterator it=children().begin(); it!=children().end(); it++ )
{
Gadget *child = static_cast<Gadget *>( it->get() );
if( !child->getVisible() )
{
continue;
}
const Box3f &b = bounds[i++];
V3f childOffset( 0 );
if( !b.isEmpty() )
{
for( int a=0; a<3; a++ )
{
if( a==axis )
{
childOffset[a] = offset - ( m_direction==Increasing ? b.min[a] : b.max[a] );
}
else
{
switch( m_alignment )
{
case Min :
childOffset[a] = -size[a]/2.0f - b.min[a];
break;
case Centre :
childOffset[a] = -b.center()[a];
break;
default :
// max
childOffset[a] = size[a]/2.0f - b.max[a];
}
}
}
offset += b.size()[axis] * ( m_direction==Increasing ? 1.0f : -1.0f );
}
offset += m_spacing * ( m_direction==Increasing ? 1.0f : -1.0f );
M44f m; m.translate( childOffset );
child->setTransform( m );
}
m_clean = true;
}
