#region Namespaces
using System;
#endregion 

namespace ScriptCode {
	/// <summary>
	/// Drawing scripts are used for drawing a visual object.
	/// 
	/// This script can be used in several ways:
	/// (1) It can be used on a chart by clicking the chart in order to set the drawing's anchor points.
	/// (2) It can be used from another script by having that script set the drawing's anchor points.
	/// </summary>
	public partial class MyDrawing : DrawingScriptBase // NEVER CHANGE THE CLASS NAME 
	{
#region Variables

#endregion

#region OnInitialize
        /// <summary>
        /// This function is called when a new drawing instance is created.
        /// </summary>
        /// --------------------------------------------------------------------------------------------------
        /// THIS FUNCTION MUST ACCEPT THE SYMBOL INDEX PARAMETER AND SHOULD NOT ACCEPT ANY OTHER PARAMETERS.
        /// --------------------------------------------------------------------------------------------------
		/// <param name="symbolIndex" type="Symbol" default="">The underlying symbol index for the drawing.</param>
		public void OnInitialize(int symbolIndex) {
			// Initialize the drawing for the symbol to accept 2 anchor points. 
			DrawingInitialize(symbolIndex, 2);
			// Set the icon for the drawing tool.
			DrawingSetIcon("Fibonacci Extensions");
		}
#endregion

#region OnChartSetup
		/// <summary>
		/// This function is used for setting up the drawing on the chart and registering its pens (see the DrawingRegisterPen function).
		/// </summary>
		public override void OnChartSetup() {
			// Register the pen with which to draw the 0.0 line.
			DrawingRegisterPen("0.0", new int[] {
				150, 150, 150, 255
			}, C_DashStyle.SOLID, 2);
			// Register the pen with which to draw the 23.6 line.
			DrawingRegisterPen("23.6", new int[] {
				35, 145, 255, 255
			}, C_DashStyle.SOLID, 2);
			// Register the pen with which to draw the 38.2 line.
			DrawingRegisterPen("38.2", new int[] {
				100, 150, 235, 255
			}, C_DashStyle.SOLID, 2);
			// Register the pen with which to draw the 50.0 line.
			DrawingRegisterPen("50.0", new int[] {
				75, 135, 185, 255
			}, C_DashStyle.SOLID, 2);
			// Register the pen with which to draw the 61.8 line.
			DrawingRegisterPen("61.8", new int[] {
				10, 140, 145, 255
			}, C_DashStyle.SOLID, 2);
			// Register the pen with which to draw the 76.4 line.
			DrawingRegisterPen("76.4", new int[] {
				50, 140, 90, 255
			}, C_DashStyle.SOLID, 2);
			// Register the pen with which to draw the 100.0 line.
			DrawingRegisterPen("100.0", new int[] {
				150, 150, 150, 255
			}, C_DashStyle.SOLID, 2);
			// Register the pen with which to draw the 161.8 line.
			DrawingRegisterPen("161.8", new int[] {
				150, 150, 150, 255
			}, C_DashStyle.SOLID, 2);
			// Register the pen with which to draw the 261.8 line.
			DrawingRegisterPen("261.8", new int[] {
				150, 150, 150, 255
			}, C_DashStyle.SOLID, 2);
			// Register the pen with which to draw the 423.6 line.
			DrawingRegisterPen("423.6", new int[] {
				150, 150, 150, 255
			}, C_DashStyle.SOLID, 2);
		}
#endregion

#region OnDraw
		/// <summary>
		/// This function is used to draw the drawing by setting all of its anchor points, lines and labels on a virtual canvas. 
		/// The canvas x-axis values are the date and time of the underlying symbol bars and its y-axis values are the symbol prices. 
		///
		/// The location of the drawing on the canvas is specified by the drawing anchor points, which can either be specified by 
		/// clicking on a chart or from another script (see the Drawing functions).
		/// </summary>
		public override void OnDraw() {
			// Get the X value of anchor point 0. 
			int x1 = DrawingAnchorPointBarShift(0);
			// Get the Y value of anchor point 0. 
			double y1 = DrawingAnchorPointValue(0);
			// Get the X value of anchor point 1. 
			int x2 = DrawingAnchorPointBarShift(1);
			// Get the Y value of anchor point 1. 
			double y2 = DrawingAnchorPointValue(1);


			// Check whether x1 is larger than x2. 
			if (x1 > x2) {
				int tempX = x1;
				x1 = x2;
				x2 = tempX;
			}
			// Draw the Fibonacci Extensions lines. 
			DrawingSetLine("0.0", x1, y1, "", x2, y1, "0.0");
			DrawingSetLine("23.6", x1, y1 + 236d / 1000 * (y2 - y1), "", x2, y1 + 236d / 1000 * (y2 - y1), "23.6");
			DrawingSetLine("38.2", x1, y1 + 382d / 1000 * (y2 - y1), "", x2, y1 + 382d / 1000 * (y2 - y1), "38.2");
			DrawingSetLine("50.0", x1, y1 + 500d / 1000 * (y2 - y1), "", x2, y1 + 500d / 1000 * (y2 - y1), "50.0");
			DrawingSetLine("61.8", x1, y1 + 618d / 1000 * (y2 - y1), "", x2, y1 + 618d / 1000 * (y2 - y1), "61.8");
			DrawingSetLine("76.4", x1, y1 + 764d / 1000 * (y2 - y1), "", x2, y1 + 764d / 1000 * (y2 - y1), "76.4");
			DrawingSetLine("100.0", x1, y2, "", x2, y2, "100.0");
			DrawingSetLine("161.8", x1, y1 + 1618d / 1000 * (y2 - y1), "", x2, y1 + 1618d / 1000 * (y2 - y1), "161.8");
			DrawingSetLine("261.8", x1, y1 + 2618d / 1000 * (y2 - y1), "", x2, y1 + 2618d / 1000 * (y2 - y1), "261.8");
			DrawingSetLine("423.6", x1, y1 + 4236d / 1000 * (y2 - y1), "", x2, y1 + 4236d / 1000 * (y2 - y1), "423.6");
		}
#endregion
	}
}