#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); } #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() { // Set the stroke pen. DrawingRegisterPen("StrokePen", new byte[] { 5, 110, 180, 255 }, AT_DashStyle.SOLID, 2); // Set the fill pen. DrawingRegisterPen("FillPen", new byte[] { 5, 110, 180, 75 }, AT_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 center X of the circle. int centerX = DrawingAnchorPointBarShift(0); // Get the center Y of the circle. double centerY = DrawingAnchorPointValue(0); // Get the radius X of the circle. int pointX = DrawingAnchorPointBarShift(1); // Get the radius Y of the circle. double pointY = DrawingAnchorPointValue(1); // Draw the ellipse. DrawingSetEllipse("StrokePen", "FillPen", centerX, centerY, Math.Abs(pointX - centerX), Math.Abs(pointY - centerY), ""); } #endregion } }

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