public void TestUnion()
{
var sketchA = new Sketch(64, 64,
new Line(16, 16, 48, 16),
new Line(48, 16, 48, 48));
var sketchB = new Sketch(64, 64,
new Line(48, 48, 16, 48),
new Line(16, 48, 16, 16));
var sketchUnion = Bolt.Union(sketchA, sketchB);
sketchUnion.Scale = 8.0;
sketchUnion.WriteImage(WorkingDirectory, "Union");
}