/Wavelets/Diplom/Forms/WaveletsDesigner.cs

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.IO;



namespace Diplom.Forms

{

    public partial class WaveletsDesigner : Form

    {

        NumericArrays.Numeric1DArray array1D = null;

        string waveletType = string.Empty;



        public WaveletsDesigner()

        {

            InitializeComponent();

        }



        private void refreshButton_Click(object sender, EventArgs e)

        {

            int length;

            double a;

            double b;



            try

            {

                length = (int)numericUpDown1.Value;

            }

            catch (Exception ex)

            {

                textBox1.Text = ex.ToString();

                return;

            }



            try

            {

                string[] strs = intervalTextBox.Text.Split(new string[4] { " ", ",", ":", ";" }, StringSplitOptions.RemoveEmptyEntries);

                if (strs.Length != 2) throw new Exception("Incorrect Interval");

                a = Convert.ToDouble(strs[0]);

                b = Convert.ToDouble(strs[1]);

            }

            catch (Exception ex)

            {

                textBox1.Text = ex.ToString();

                return;

            }



            if (string.IsNullOrEmpty(comboBox1.Text))

            {

                textBox1.Text = "Please select Wavelet";

                return;

            }



            switch (comboBox1.Text)

            {

                case "MHAT":

                    {

                        array1D = new Diplom.NumericArrays.Numeric1DArray(length);

                        double h = (b - a) / length;

                        int i=0;

                        for (double x = a; x <= b; x += h)

                        {

                            if (i == length) break;

                            double res = (1 - x * x);

                            res *= Math.Exp(-x * x * 0.5);

                            array1D.Insert(i, res);

                            i++;

                        }

                        array1D.InitCharacters();

                    } break;

                case "Real part Morlet":

                    {

                        array1D = new Diplom.NumericArrays.Numeric1DArray(length);

                        double h = (b - a) / length;

                        int i = 0;

                        for (double x = a; x <= b; x += h)

                        {

                            if (i == length) break;

                            double res = Math.Exp(-x * x / 2.0) * Math.Cos(2 * Math.PI * x);

                            array1D.Insert(i, res);

                            i++;

                        }

                        array1D.InitCharacters();

                    } break;

                case "WAVE":

                    {

                        array1D = new Diplom.NumericArrays.Numeric1DArray(length);

                        double h = (b - a) / length;

                        int i = 0;

                        for (double x = a; x <= b; x += h)

                        {

                            if (i == length) break;

                            double res = -x * Math.Exp(-x * x * 0.5);

                            array1D.Insert(i, res);

                            i++;

                        }

                        array1D.InitCharacters();

                    } break;

                case "DOG":

                    {

                        array1D = new Diplom.NumericArrays.Numeric1DArray(length);

                        double h = (b - a) / length;

                        int i = 0;

                        for (double x = a; x <= b; x += h)

                        {

                            if (i == length) break;

                            double res = Math.Exp(-x * x * 0.5) - 0.5 * Math.Exp(-x * x / 8.0);

                            array1D.Insert(i, res);

                            i++;

                        }

                        array1D.InitCharacters();

                    } break;

                case "HAAR":

                    {

                        array1D = new Diplom.NumericArrays.Numeric1DArray(length);

                        double h = (b - a) / length;

                        int i = 0;

                        for (double x = a; x <= b; x += h)

                        {

                            if (i == length) break;

                            double res;

                            if (x < 0) res = 0.0;

                            else if (x < 0.5) res = 1.0;

                            else res = -1.0;

                            array1D.Insert(i, res);

                            i++;

                        }

                        array1D.InitCharacters();

                    } break;

                case "LP-LittleWood_Paley":

                    {

                        array1D = new Diplom.NumericArrays.Numeric1DArray(length);

                        double h = (b - a) / length;

                        int i = 0;

                        for (double x = a; x <= b; x += h)

                        {

                            if (i == length) break;

                            double res;

                            if (Math.Abs(x) < 1e-6) res = 0.0;

                            else res = (Math.Sin(2*Math.PI*x)-Math.Sin(Math.PI*x))/(Math.PI*x);

                            array1D.Insert(i, res);

                            i++;

                        }

                        array1D.InitCharacters();

                    } break;

                case "FHAT":

                    {

                        array1D = new Diplom.NumericArrays.Numeric1DArray(length);

                        double h = (b - a) / length;

                        int i = 0;

                        for (double x = a; x <= b; x += h)

                        {

                            if (i == length) break;

                            double res;

                            if (x < -1.0) res = 0.0;

                            else if (3 * x < -1.0) res = -0.5;

                            else if (3 * x < 1.0) res = 1.0;

                            else if (x < 1.0) res = -0.5;

                            else res = 0.0;

                            array1D.Insert(i, res);

                            i++;

                        }

                        array1D.InitCharacters();

                    } break;

            }

            waveletType = comboBox1.Text;

            this.RePaint();

        }





        private void WaveletsDesigner_Load(object sender, EventArgs e)

        {

            comboBox1.SelectedIndex = 0;

        }



        private void RePaint()

        {

            if (array1D != null)

            {

                Image img = new Bitmap(waveletPicture.Width, waveletPicture.Height);

                System.Drawing.Graphics graphics = System.Drawing.Graphics.FromImage(img);

                graphics.Clear(Color.White);

                Graphics.D2D.DrawStyle drawStyle = new Diplom.Graphics.D2D.DrawStyle(Color.Blue, new Point(0, 0), new Point(1, 1), Color.Red, Color.Green);

                Graphics.D2D.D2DVisualizer.DrawGraphic(ref graphics, ref array1D,

                    new RectangleF(

                        new PointF((float)50, (float)30),

                        new SizeF((float)waveletPicture.Width - 100, (float)waveletPicture.Height - 60)),

                    drawStyle);



                Graphics.D2D.D2DVisualizer.DrawSignature(ref graphics, ref array1D,

                    new RectangleF(

                        new PointF((float)50, (float)30),

                        new SizeF((float)waveletPicture.Width - 100, (float)waveletPicture.Height - 60)),

                    drawStyle, new Size(25, 10));



                graphics.DrawString(waveletType, new Font("Times New Roman", 7), Brushes.Red,

                    new PointF(10, 10));



                waveletPicture.Image = img;

            }

        }



        private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)

        {

            refreshButton_Click(sender, e);

        }



        private void saveButton_Click(object sender, EventArgs e)

        {

            if (array1D != null && waveletPicture.Image != null)

            {

                SaveFileDialog saveFileDialog = new SaveFileDialog();

                saveFileDialog.AddExtension = true;

                saveFileDialog.CheckPathExists = true;

                saveFileDialog.Filter = "Jpeg files|*.jpg";

                saveFileDialog.InitialDirectory = Path.GetDirectoryName(Application.ExecutablePath);

                if (saveFileDialog.ShowDialog() == DialogResult.OK)

                {

                    waveletPicture.Image.Save(saveFileDialog.FileName, System.Drawing.Imaging.ImageFormat.Jpeg);

                }

            }

        }



        private void WaveletsDesigner_ResizeEnd(object sender, EventArgs e)

        {

            this.RePaint();

        }

    }

}