public void UpdateContentControl()
{
this.contentControl.Children.Clear();
// TODO: place calculated results in cache
var isRotated = ((this.Rot == Rotation.R90) || (this.Rot == Rotation.R270));
var gridLines = GridCreator.CreateGrid(this.gridMode, this.RenderWidth, this.RenderHeight, isRotated);
var lines = GridCreator.Transform(gridLines, this.rotation, this.isFlippedHorizontal, this.isFlippedVertical, this.RenderWidth, this.RenderHeight);
for (var i = 0; i < lines.Length; i++)
{
this.contentControl.Children.Add(CreateLine(lines[i].p1.X, lines[i].p1.Y, lines[i].p2.X, lines[i].p2.Y));
}
base.OnPropertyChanged("CaptionText");
}