■ 큐를 사용해 너비 우선 색상 이진 트리를 그리는 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 { //////////////////////////////////////////////////////////////////////////////////////////////////// Class ////////////////////////////////////////////////////////////////////////////////////////// Private #region 가지 정보 - BranchInfo /// <summary> /// 가지 정보 /// </summary> private class BranchInfo { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Public #region Field /// <summary> /// X 좌표 /// </summary> public float X; /// <summary> /// Y 좌표 /// </summary> public float Y; /// <summary> /// 세타 /// </summary> public float Theta; /// <summary> /// 길이 /// </summary> public float Length; /// <summary> /// 깊이 /// </summary> public int Depth; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - BranchInfo(x, y, theta, length, depth) /// <summary> /// 생성자 /// </summary> /// <param name="x">X 좌표</param> /// <param name="y">Y 좌표</param> /// <param name="theta">세타</param> /// <param name="length">길이</param> /// <param name="depth">깊이</param> public BranchInfo(float x, float y, float theta, float length, int depth) { X = x; Y = y; Theta = theta; Length = length; Depth = depth; } #endregion } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); #region 이벤트를 설정한다. this.depthNumericUpDown.KeyUp += parameterControl_KeyUp; this.depthNumericUpDown.ValueChanged += parameterControl_ValueChanged; this.lengthNumericUpDown.KeyUp += parameterControl_KeyUp; this.lengthNumericUpDown.ValueChanged += parameterControl_ValueChanged; this.lengthScaleTextBox.TextChanged += parameterControl_ValueChanged; this.deltaThetaNumericUpDown.ValueChanged += parameterControl_ValueChanged; this.deltaThetaNumericUpDown.KeyUp += parameterControl_KeyUp; this.canvasPictureBox.Resize += canvasPictureBox_Resize; this.canvasPictureBox.Paint += canvasPictureBox_Paint; #endregion } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 매개 변수 컨트롤 키 UP 처리하기 - parameterControl_KeyUp(sender, e) /// <summary> /// 매개 변수 컨트롤 키 UP 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void parameterControl_KeyUp(object sender, KeyEventArgs e) { this.canvasPictureBox.Refresh(); } #endregion #region 매개 변수 컨트롤 값 변경시 처리하기 - parameterControl_ValueChanged(sender, e) /// <summary> /// 매개 변수 컨트롤 값 변경시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void parameterControl_ValueChanged(object sender, EventArgs e) { this.canvasPictureBox.Refresh(); } #endregion #region 캔버스 픽처 박스 크기 조정시 처리하기 - canvasPictureBox_Resize(sender, e) /// <summary> /// 캔버스 픽처 박스 크기 조정시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void canvasPictureBox_Resize(object sender, EventArgs e) { this.canvasPictureBox.Refresh(); } #endregion #region 캔버스 픽처 박스 페인트시 처리하기 - canvasPictureBox_Paint(sender, e) /// <summary> /// 캔버스 픽처 박스 페인트시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void canvasPictureBox_Paint(object sender, PaintEventArgs e) { e.Graphics.Clear(this.canvasPictureBox.BackColor); e.Graphics.SmoothingMode = SmoothingMode.AntiAlias; try { float rootX = this.canvasPictureBox.ClientSize.Width / 2; float rootY = this.canvasPictureBox.ClientSize.Height - 4; float lengthScale = float.Parse(this.lengthScaleTextBox.Text); float deltaTheta = (float)(Math.PI / 180.0 * (double)this.deltaThetaNumericUpDown.Value); using(Pen pen = new Pen(Color.Black)) { DrawTree ( e.Graphics, pen, (int)this.depthNumericUpDown.Value, rootX, rootY, (int)this.lengthNumericUpDown.Value, (float)(-Math.PI / 2), lengthScale, deltaTheta ); } } catch { } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 나무 그리기 - DrawTree(graphics, pen, maximumDepth, x, y, maximumLength, initialTheta, lengthScale, deltaTheta) /// <summary> /// 나무 그리기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="pen">펜</param> /// <param name="maximumDepth">최대 깊이</param> /// <param name="x">X 좌표</param> /// <param name="y">Y 좌표</param> /// <param name="maximumLength">최대 길이</param> /// <param name="initialTheta">초기 세타</param> /// <param name="lengthScale">길이 스케일</param> /// <param name="deltaTheta">델타 세타</param> private void DrawTree(Graphics graphics, Pen pen, int maximumDepth, float x, float y, float maximumLength, float initialTheta, float lengthScale, float deltaTheta) { Queue<BranchInfo> branchInfoQueue = new Queue<BranchInfo>(); branchInfoQueue.Enqueue(new BranchInfo(x, y, initialTheta, maximumLength, maximumDepth)); while(branchInfoQueue.Count > 0) { BranchInfo branchInfo = branchInfoQueue.Dequeue(); if(branchInfo.Depth == 1) { pen.Color = Color.Red; } else { int green = 255 * (maximumDepth - branchInfo.Depth) / maximumDepth; int red = 139 * (branchInfo.Depth - 3) / maximumDepth; if(red < 0) { red = 0; } int blue = 0; pen.Color = Color.FromArgb(red, green, blue); } int thickness = 10 * branchInfo.Depth / maximumDepth; if(thickness < 0) { thickness = 0; } pen.Width = thickness; float x1 = (float)(branchInfo.X + branchInfo.Length * Math.Cos(branchInfo.Theta)); float y1 = (float)(branchInfo.Y + branchInfo.Length * Math.Sin(branchInfo.Theta)); graphics.DrawLine(pen, branchInfo.X, branchInfo.Y, x1, y1); if(branchInfo.Depth > 1) { branchInfoQueue.Enqueue ( new BranchInfo ( x1, y1, branchInfo.Theta + deltaTheta, branchInfo.Length * lengthScale, branchInfo.Depth - 1 ) ); branchInfoQueue.Enqueue ( new BranchInfo ( x1, y1, branchInfo.Theta - deltaTheta, branchInfo.Length * lengthScale, branchInfo.Depth - 1 ) ); } } } #endregion } } |
