GUI.cs

using DemoOpenGLBasicsCS.movements;
using System;
using System.Windows.Forms;
using System.Threading;


namespace DemoOpenGLBasicsCS
{
    public partial class GUI : Form

    {
        private TView oglView;
        private Boolean buttonDown;

        private int iterations;
        private double delta_angle;
        private double delta_ropeposition;
        private double delta_ropelenght;

        private double mark_rotationangle;
        private double mark_ropelength;
        private double mark_ropeposition;

        public GUI()
        {
            InitializeComponent();

            oglView = new TView();
            oglView.Dock = DockStyle.Fill;
            panel.Controls.Add(oglView);
            panel.Focus();
            this.buttonDown = false; //needed for press the button and can hold it. It will be used in every button feature.
            iterations = 100;
            Update_positions();
        }

        private void Update_positions()
        {
            tbx_x.Text = Math.Round(oglView.Kran1.X, 3).ToString();
            tbx_y.Text = Math.Round(oglView.Kran1.Y, 3).ToString();
            tbx_z.Text = Math.Round(oglView.Kran1.Z, 3).ToString();
            tbx_xz_movement.Text = Math.Round(oglView.Kran1.MovementfactorXZ, 3).ToString();
            tbx_y_movement.Text = Math.Round(oglView.Kran1.MovementfactorY, 3).ToString();
            
            tbx_tri_x.Text = Math.Round(Math.Cos(Math.PI * oglView.Kran1.Rotationangle / 180) * oglView.Kran1.Ropeposition, 3).ToString();
            tbx_tri_y.Text = Math.Round(oglView.Kran1.Towerheight - oglView.Kran1.Ropelength, 3).ToString();
            tbx_tri_z.Text = Math.Round(Math.Sin(Math.PI * oglView.Kran1.Rotationangle / 180) * oglView.Kran1.Ropeposition, 3).ToString();
            tbx_alpha.Text = oglView.Kran1.Rotationangle.ToString();
            tbx_rad.Text = Math.Round(oglView.Kran1.Radiant, 3).ToString();
            tbx_boomlength.Text = Math.Round(oglView.Kran1.Boomlength, 3).ToString();
            tbx_towerheight.Text = Math.Round(oglView.Kran1.Towerheight, 3).ToString();
            tbx_ropelength.Text = Math.Round(oglView.Kran1.Ropelength, 3).ToString();
            tbx_ropeposition.Text = Math.Round(oglView.Kran1.Ropeposition, 3).ToString();
        }

        private void Movement(interfaces.IMovement b)
        {
            while (buttonDown)
            {
                oglView.Kran1.setMovement(b);
                oglView.Kran1.move();
                Redraw();
                Thread.Sleep(50);
                Application.DoEvents();
            }
        }

        private void Redraw()
        {
            oglView.Kran1.Draw();
            oglView.Refresh();
            oglView.Focus();
            Update_positions();
        }

        private void btn_links_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                buttonDown = true;
                Movement(new Left());
            }
        }

        private void btn_links_MouseUp(object sender, MouseEventArgs e)
        {
            buttonDown = false;
        }

        private void btn_rechts_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                buttonDown = true;
                Movement(new Right());
            }
        }

        private void btn_rechts_MouseUp(object sender, MouseEventArgs e)
        {
            buttonDown = false;
        }

        private void btn_ausleger_vor_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                buttonDown = true;
                Movement(new Forth());
            }
        }

        private void btn_ausleger_vor_MouseUp(object sender, MouseEventArgs e)
        {
            buttonDown = false;
        }

        private void btn_ausleger_zurueck_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                buttonDown = true;
                Movement(new Back());
            }
        }

        private void btn_ausleger_zurueck_MouseUp(object sender, MouseEventArgs e)
        {
            buttonDown = false;
        }

        private void btn_seil_hoch_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                buttonDown = true;
                Movement(new Up());
            }
        }

        private void btn_seil_hoch_MouseUp(object sender, MouseEventArgs e)
        {
            buttonDown = false;
        }

        private void btn_seil_runter_MouseDown(object sender, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                buttonDown = true;
                Movement(new Down());
            }
        }

        private void btn_seil_runter_MouseUp(object sender, MouseEventArgs e)
        {
            buttonDown = false;
        }

        public void btn_mark_position_Click(object sender, EventArgs e)
        {
            

            // write the current vectors into our fields
            tbx_mark_x.Text = tbx_tri_x.Text;
            tbx_mark_y.Text = tbx_tri_y.Text;
            tbx_mark_z.Text = tbx_tri_z.Text;

            
    }
        public Boolean ValidateAgainstZero (string input)
        {
            return input == "0" ? false : true;
        }

        private Boolean ValidateAgainstEmptyString (string input)
        {
            return input == "" ? false : true;
        }

        public void btn_goto_position_Click(object sender, EventArgs e)
        {
            Boolean nope = true;
            foreach (string input in new String[] { tbx_mark_x.Text, tbx_mark_y.Text, tbx_mark_z.Text })
            {
                if (ValidateAgainstEmptyString(input) == false)
                {
                    MessageBox.Show("Missing input");
                }
                else if (ValidateAgainstZero(input) == false)
                {
                    MessageBox.Show("Something is 0...");
                }
                // todo: validate if the coordinates are withing our working area
                else
                {
                    nope = false;
                }
            }
            // save the vector from the textboxes into vars
            // we need them a few this this allows us to easier access them

            if (nope == false)
            {
                Double x = Convert.ToDouble(tbx_mark_x.Text);
                Double y = Convert.ToDouble(tbx_mark_y.Text);
                Double z = Convert.ToDouble(tbx_mark_z.Text.ToString());

                // calculate the current position as polar coordinates
                mark_ropeposition = Math.Sqrt(Math.Pow(x, x) + Math.Pow(z, z));
                mark_ropelength = oglView.Kran1.Towerheight - y;
                mark_rotationangle = Math.Asin(z / mark_ropeposition);

                delta_angle = ((mark_rotationangle - oglView.Kran1.Rotationangle) / iterations);
                delta_ropeposition = ((mark_ropeposition - oglView.Kran1.Ropeposition) / iterations);
                delta_ropelenght = ((mark_ropelength - oglView.Kran1.Ropelength) / iterations);

                for (int i = 1; i <= iterations; i++)
                {
                    oglView.Kran1.Rotationangle = oglView.Kran1.Rotationangle + delta_angle;
                    oglView.Kran1.Ropeposition = oglView.Kran1.Ropeposition + delta_ropeposition;
                    oglView.Kran1.Ropelength = oglView.Kran1.Ropelength + delta_ropelenght;
                    Redraw();
                    Thread.Sleep(50);
                }
            }
        }
    }
}