BezierFitting.MainForm.MainForm_MouseDown C# (CSharp) Метод

        private void MainForm_MouseDown(object sender, MouseEventArgs e)
        {
            if (checkBoxAddPoint.Checked)
            {
                scene.DataPoints.Add(new PointD(e.X, e.Y));
                this.Invalidate();
                return;
            }

            mouse_start = e.Location;
            this.Text = mouse_start.ToString();
            capture = scene.HitTest(e.X, e.Y);
            switch (capture)
            {
                case 1:
                    point_start = scene.CurrentBezier.Point1;
                    break;

                case 2:
                    point_start = scene.CurrentBezier.Point2;
                    break;

                case 3:
                    point_start = scene.CurrentBezier.Point3;
                    break;

                case 4:
                    point_start = scene.CurrentBezier.Point4;
                    break;

                default:
                    break;
            }
        }