■ 측면 및 종횡비로 정의된 사각형을 찾는 방법을 보여준다.
▶ MainForm.cs
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using System; using System.Collections.Generic; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 포인트 1 /// </summary> private PointF point1; /// <summary> /// 포인트 2 /// </summary> private PointF point2; /// <summary> /// 포인트 리스트 /// </summary> private List<PointF[]> pointList = new List<PointF[]>(); private Brush[] brushArray = { new SolidBrush(Color.FromArgb(128, Color.Red )), new SolidBrush(Color.FromArgb(128, Color.Red )), new SolidBrush(Color.FromArgb(128, Color.Blue)), new SolidBrush(Color.FromArgb(128, Color.Blue)) }; /// <summary> /// 펜 배열 /// </summary> private Pen[] penArray = { Pens.Red, Pens.Red, Pens.Blue, Pens.Blue }; /// <summary> /// 그리기 여부 /// </summary> private bool isDrawing = false; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.aspectRatioTextBox.TextChanged += aspectRatioTextBox_TextChanged; this.pictureBox.Paint += pictureBox_Paint; this.pictureBox.MouseDown += pictureBox_MouseDown; this.pictureBox.MouseMove += pictureBox_MouseMove; this.pictureBox.MouseUp += pictureBox_MouseUp; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 종횡비 텍스트 박스 텍스트 변경시 처리하기 - aspectRatioTextBox_TextChanged(sender, e) /// <summary> /// 종횡비 텍스트 박스 텍스트 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void aspectRatioTextBox_TextChanged(object sender, EventArgs e) { this.point1 = new PointF(); this.point2 = new PointF(); this.pointList = new List<PointF[]>(); this.pictureBox.Refresh(); } #endregion #region 픽처 박스 마우스 DOWN 처리하기 - pictureBox_MouseDown(sender, e) /// <summary> /// 픽처 박스 마우스 DOWN 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void pictureBox_MouseDown(object sender, MouseEventArgs e) { this.point1 = e.Location; this.point2 = e.Location; this.pointList = new List<PointF[]>(); this.pictureBox.Refresh(); this.isDrawing = true; } #endregion #region 픽처 박스 마우스 이동시 처리하기 - pictureBox_MouseMove(sender, e) /// <summary> /// 픽처 박스 마우스 이동시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void pictureBox_MouseMove(object sender, MouseEventArgs e) { if(!this.isDrawing) { return; } this.point2 = e.Location; this.pictureBox.Refresh(); } #endregion #region 픽처 박스 마우스 UP 처리하기 - pictureBox_MouseUp(sender, e) /// <summary> /// 픽처 박스 마우스 UP 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void pictureBox_MouseUp(object sender, MouseEventArgs e) { if(!this.isDrawing) { return; } this.isDrawing = false; float aspectRatio = GetAspectRatio(this.aspectRatioTextBox.Text); this.pointList = FindRectangle(aspectRatio, this.point1, this.point2); this.pictureBox.Refresh(); } #endregion #region 픽처 박스 페인트시 처리하기 - pictureBox_Paint(sender, e) /// <summary> /// 픽처 박스 페인트시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void pictureBox_Paint(object sender, PaintEventArgs e) { e.Graphics.Clear(this.pictureBox.BackColor); e.Graphics.SmoothingMode = SmoothingMode.AntiAlias; for(int i = 0; i < this.pointList.Count; i++) { e.Graphics.FillPolygon(this.brushArray[i], this.pointList[i]); e.Graphics.DrawPolygon(this.penArray[i], this.pointList[i]); } if(this.point1 != this.point2) { e.Graphics.DrawLine(Pens.Black, this.point1, this.point2); } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 종횡비 구하기 - GetAspectRatio(text) /// <summary> /// 종횡비 구하기 /// </summary> /// <param name="text">텍스트</param> /// <returns>종횡비</returns> private float GetAspectRatio(string text) { try { if(text.Contains(":")) { float width = float.Parse(text.Split(':')[0]); float height = float.Parse(text.Split(':')[1]); return width / height; } else { return float.Parse(text); } } catch { return 1; } } #endregion #region 사각형 찾기 - FindRectangle(aspectRatio, point1, point2) /// <summary> /// 사각형 찾기 /// </summary> /// <param name="aspectRatio">종횡비</param> /// <param name="point1">포인트 1</param> /// <param name="point2">포인트 2</param> /// <returns>사각형</returns> private List<PointF[]> FindRectangle(float aspectRatio, PointF point1, PointF point2) { float vectorX = point2.X - point1.X; float vectorY = point2.Y - point1.Y; if(Math.Sqrt(vectorX * vectorX + vectorY * vectorY) < 0.1) { return null; } PointF point3; PointF point4; List<PointF[]> pointList = new List<PointF[]>(); float perpendicularVectorX; float perpendicularVectorY; perpendicularVectorX = vectorY * aspectRatio; perpendicularVectorY = -vectorX * aspectRatio; point3 = new PointF(point2.X + perpendicularVectorX, point2.Y + perpendicularVectorY); point4 = new PointF(point1.X + perpendicularVectorX, point1.Y + perpendicularVectorY); pointList.Add(new PointF[] { point1, point2, point3, point4 }); point3 = new PointF(point2.X - perpendicularVectorX, point2.Y - perpendicularVectorY); point4 = new PointF(point1.X - perpendicularVectorX, point1.Y - perpendicularVectorY); pointList.Add(new PointF[] { point1, point2, point3, point4 }); perpendicularVectorX = vectorY / aspectRatio; perpendicularVectorY = -vectorX / aspectRatio; point3 = new PointF(point2.X + perpendicularVectorX, point2.Y + perpendicularVectorY); point4 = new PointF(point1.X + perpendicularVectorX, point1.Y + perpendicularVectorY); pointList.Add(new PointF[] { point1, point2, point3, point4 }); point3 = new PointF(point2.X - perpendicularVectorX, point2.Y - perpendicularVectorY); point4 = new PointF(point1.X - perpendicularVectorX, point1.Y - perpendicularVectorY); pointList.Add(new PointF[] { point1, point2, point3, point4 }); return pointList; } #endregion } } |
