/// <summary>
/// Creates line as drawing object.
/// </summary>
/// <param name="graphics"><see cref="IGraphics"/> object.</param>
/// <param name="penColor">Pen color.</param>
/// <param name="x1">First point X coordinate.</param>
/// <param name="y1">First point Y coordinate.</param>
/// <param name="x2">Second point X coordinate.</param>
/// <param name="y2">Second point Y coordinate.</param>
/// <param name="penThickness">Pen thickness.</param>
/// <returns>Line as drawing object.</returns>
public static ILine CreateLine(this IGraphics graphics, Color penColor, double x1, double y1, double x2, double y2, double penThickness = 1)
{
IPen pen = CreatePen(graphics, penColor, penThickness);
return(graphics.CreateLine(pen, x1, y1, x2, y2));
}