C# Application to Create and Recognize Mouse Gestures (.NET)

using System;
using System.Drawing;
using System.Collections.Generic;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Drawing2D;
using MouseGestures;
using MouseGestures.Utilities;

namespace GestureRecognizer
{
	public class GesturePanel : Panel
	{
		private PointF[] m_Points = new PointF[0];
		private Gesture m_Gesture;
		private PointF m_MinPoint;
		private PointF m_MaxPoint;
		private Color m_BaseColor;
		private int m_Transparency;
		private Pen m_Pen;
		private Pen m_BasePen;
		private SolidBrush m_StartBrush;
		private SolidBrush m_EndBrush;

		public Color BaseColor
		{
			get { return m_BaseColor; }
			set
			{ 
				m_BaseColor = value;
				BackColor = Color.FromArgb(m_Transparency, value);
				Invalidate();
				//Refresh();
			}
		}

		public int Transparency
		{
			get { return m_Transparency; }
			set
			{
				m_Transparency = value;
				BackColor = Color.FromArgb(value, m_BaseColor);
				Invalidate();
				//Refresh();
			}
		}

		public Color StartColor
		{
			get { return m_StartBrush.Color; }
			set
			{
				m_StartBrush.Color = value;
				Invalidate();
				//Refresh();
			}
		}

		public Color StandardColor
		{
			get { return m_Pen.Color; }
			set
			{
				//m_StandardBrush.Color = value;
				m_Pen = new Pen(value);
				Invalidate();
				//Refresh();
			}
		}

		public Color EndColor
		{
			get { return m_EndBrush.Color; }
			set
			{
				m_EndBrush.Color = value;
				Invalidate();
				//Refresh();
			}
		}
		
		public Gesture Gesture
		{
			get { return m_Gesture; }
			set
			{
				if (value == null)
				{
					m_Gesture = null;
					m_Points = new PointF[0];
				}
				else
				{

					m_Gesture = value;
					m_Points = value.ToArray();

					#region Performing geometric operations to fit gesture in the panel
					Mathematics.GetBoundingBox(m_Points, out m_MinPoint, out m_MaxPoint);
					Mathematics.TranslateToOrigin(m_Points, ref m_MinPoint, ref m_MaxPoint);
					Mathematics.ScaleToFit(m_Points, Math.Min(ClientSize.Width, ClientSize.Height) - 10, ref m_MinPoint, ref m_MaxPoint);
					Mathematics.TranslateToCenter(m_Points, ClientSize.Width, ClientSize.Height, ref m_MinPoint, ref m_MaxPoint);
					#endregion
				}
				//Refresh();
				Invalidate();
			}
		}

		public PointF[] Points
		{
			get { return m_Points; }
			set
			{
				m_Gesture = null;

				if (value == null)
					m_Points = new PointF[0];
				else
				{

					m_Points = value;

					if (m_Points.Length > 0)
					{
						#region Performing geometric operations to fit gesture in the panel
						Mathematics.GetBoundingBox(m_Points, out m_MinPoint, out m_MaxPoint);
						Mathematics.TranslateToOrigin(m_Points, ref m_MinPoint, ref m_MaxPoint);
						Mathematics.ScaleToFit(m_Points, Math.Min(ClientSize.Width, ClientSize.Height) - 10, ref m_MinPoint, ref m_MaxPoint);
						Mathematics.TranslateToCenter(m_Points, ClientSize.Width, ClientSize.Height, ref m_MinPoint, ref m_MaxPoint);
						#endregion
					}
				}
				//Refresh();
				Invalidate();
			}
		}

		public GesturePanel()
		{
			SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.OptimizedDoubleBuffer, true);
			DoubleBuffered = true;

			m_BaseColor = Color.Gray;
			m_Transparency = 100;
			m_Pen = new Pen(Color.Black, 1);
			m_BasePen = new Pen(Color.Gray, 1);
			m_StartBrush = new SolidBrush(Color.Green);
			m_EndBrush = new SolidBrush(Color.Red);
			BackColor = Color.FromArgb(m_Transparency, m_BaseColor);
		}

		protected override void OnPaint(PaintEventArgs e)
		{
			if (m_Points.Length > 1)
			{
				e.Graphics.DrawLines(m_Pen, m_Points);
				e.Graphics.FillRectangle(m_StartBrush, m_Points[0].X - 1.5f, m_Points[0].Y - 1.5f, 3, 3);
				e.Graphics.FillRectangle(m_EndBrush, m_Points[m_Points.Length - 1].X - 1.5f, m_Points[m_Points.Length - 1].Y - 1.5f, 3, 3);
			}

			e.Graphics.DrawRectangle(new Pen(m_BaseColor), 0, 0, Width - 1, Height - 1);
		}

		public void Clear()
		{
			m_Gesture = null;
			m_Points = new PointF[0];
			//Refresh();
			Invalidate();
		}
	}
}