Method modify

src/IECoreImage/ImageCropOp.cpp:228–305

};

void ImageCropOp::modify( Object *object, const CompoundObject *operands )
{
	ImagePrimitive *image = runTimeCast<ImagePrimitive>( object );

	// Validate the input image
	if ( !image->channelsValid() )
	{
		throw InvalidArgumentException( "ImageCropOp: Input image is not valid" );
	}

	const Imath::Box2i &cropBox = m_cropBoxParameter->getTypedValue();
	if ( cropBox.isEmpty() )
	{
		throw InvalidArgumentException( "ImageCropOp: Specified crop box is empty" );
	}

	const bool resetOrigin = m_resetOriginParameter->getTypedValue();
	const bool intersect = m_intersectParameter->getTypedValue();

	Imath::Box2i croppedDisplayWindow;
	if ( intersect )
	{
		croppedDisplayWindow = boxIntersection( cropBox, image->getDisplayWindow() );
	}
	else
	{
		croppedDisplayWindow = cropBox;
	}
	const Imath::Box2i &dataWindow = image->getDataWindow();

	Imath::Box2i croppedDataWindow = boxIntersection( cropBox, dataWindow );

	Imath::Box2i newDisplayWindow = croppedDisplayWindow;
	Imath::Box2i newDataWindow;

	const bool matchDataWindow = m_matchDataWindowParameter->getTypedValue();
	if ( matchDataWindow )
	{
		newDataWindow = newDisplayWindow;
	}
	else
	{
		newDataWindow = croppedDataWindow;
	}

	for( auto &channel : image->channels )
	{
		ImageCropFn fn( dataWindow, croppedDataWindow, newDataWindow );
		DataPtr data = channel.second;
		assert( data );

		channel.second = despatchTypedData< ImageCropFn, TypeTraits::IsNumericVectorTypedData >( data.get(), fn );
		assert( channel.second );
	}

	if ( resetOrigin )
	{
#ifndef NDEBUG