void Crop::compute( Gaffer::ValuePlug *output, const Gaffer::Context *context ) const
{
if ( output == cropWindowPlug() )
{
int areaSource = areaSourcePlug()->getValue();
Imath::Box2i cropWindow;
switch ( areaSource )
{
case Crop::DataWindow:
{
cropWindow = inPlug()->dataWindowPlug()->getValue();
break;
}
case Crop::DisplayWindow:
{
cropWindow = inPlug()->formatPlug()->getValue().getDisplayWindow();
break;
}
case Crop::Format:
{
cropWindow = formatPlug()->getValue().getDisplayWindow();
if( formatCenterPlug()->getValue() )
{
const Imath::Box2i displayWindow = inPlug()->formatPlug()->getValue().getDisplayWindow();
Imath::V2i centerOffset( cropWindow.center() - displayWindow.center() );
cropWindow.min -= centerOffset;
cropWindow.max -= centerOffset;
}
break;
}
default:
{
cropWindow = areaPlug()->getValue();
break;
}
}
static_cast<Gaffer::AtomicBox2iPlug *>( output )->setValue( cropWindow );
}
else if( output->parent<Plug>() == offsetPlug() )
{
ImagePlug::GlobalScope c( context );
V2i offset( 0 );
if( affectDisplayWindowPlug()->getValue() )
{
if( resetOriginPlug()->getValue() )
{
offset -= cropWindowPlug()->getValue().min;
}
else if( areaSourcePlug()->getValue() == Crop::Format && formatCenterPlug()->getValue() )
{
offset -= cropWindowPlug()->getValue().min - formatPlug()->getValue().getDisplayWindow().min;
}
}
static_cast<IntPlug *>( output )->setValue(
output == offsetPlug()->getChild( 0 ) ? offset[0] : offset[1]
);
}
else
{
ImageProcessor::compute( output, context );
}
}
