matrixNodeMasking = ((GraphicContentNode)mask).matrix;
}
FXGMatrix maskMatrix = new FXGMatrix(matrixNodeMasking);
// Concatenate the shape node's matrix to the masking node's
// matrix.
maskMatrix.concat(nodeMatrix);
// Set the masking node's matrix with the concatenated values.
maskMatrix.setMatrixNodeValue(matrixNodeMasking);
}
markLeafNodesAsMask(node, (GroupNode) mask);