void DrawableHolderUI::draw( const MDrawRequest &request, M3dView &view ) const
{
MDrawData drawData = request.drawData();
DrawableHolder *drawableHolder = (DrawableHolder *)drawData.geometry();
assert( drawableHolder );
IECoreGL::ConstScenePtr s = drawableHolder->scene();
if( !s )
{
return;
}
view.beginGL();
// maya can sometimes leave an error from it's own code,
// and we don't want that to confuse us in our drawing code.
while( glGetError()!=GL_NO_ERROR )
{
}
// if we're being drawn as part of a selection operation we need
// to make sure there's a name on the name stack, as the IECoreGL::NameStateComponent
// expects to be able to load a name into it (it fails with an invalid operation if
// there's no name slot to load into).
if( view.selectMode() )
{
view.pushName( 0 );
}
try
{
// do the main render
s->render( m_displayStyle.baseState( request.displayStyle() ) );
// do a wireframe render over the top if we're selected and we just did a solid
// draw.
bool selected = request.displayStatus()==M3dView::kActive || request.displayStatus()==M3dView::kLead;
bool solid = request.displayStyle()==M3dView::kFlatShaded || request.displayStyle()==M3dView::kGouraudShaded;
if( selected && solid )
{
s->render( m_displayStyle.baseState( M3dView::kWireFrame ) );
}
}
catch( std::exception &e )
{
IECore::msg( IECore::Msg::Error, "DrawableHolderUI::draw", e.what() );
}
view.endGL();
}
