■ 육각형 그리드를 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 { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 육각형 너비 /// </summary> private const float HEXAGON_WIDTH = 50; /// <summary> /// 육각형 위치 리스트 /// </summary> private List<PointF> hexagonPointList = new List<PointF>(); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.pictureBox.Resize += pictureBox_Resize; this.pictureBox.Paint += pictureBox_Paint; this.pictureBox.MouseMove += pictureBox_MouseMove; this.pictureBox.MouseClick += pictureBox_MouseClick; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 픽처 박스 크기 조정시 처리하기 - pictureBox_Resize(sender, e) /// <summary> /// 픽처 박스 크기 조정시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void pictureBox_Resize(object sender, EventArgs e) { 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.SmoothingMode = SmoothingMode.AntiAlias; foreach(PointF hexagonPoint in this.hexagonPointList) { e.Graphics.FillPolygon ( Brushes.LightBlue, GetHexagonPointArray ( HEXAGON_WIDTH, hexagonPoint.X, hexagonPoint.Y ) ); } DrawHexagonGrid ( e.Graphics, Pens.Black, this.pictureBox.ClientSize.Width, this.pictureBox.ClientSize.Height, HEXAGON_WIDTH ); } #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) { PointF hexagonPoint = GetHexagonPoint(e.X, e.Y, HEXAGON_WIDTH); Text = $"({hexagonPoint.Y}, {hexagonPoint.X})"; } #endregion #region 픽처 박스 마우스 클릭시 처리하기 - pictureBox_MouseClick(sender, e) /// <summary> /// 픽처 박스 마우스 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void pictureBox_MouseClick(object sender, MouseEventArgs e) { PointF hexagonPoint = GetHexagonPoint(e.X, e.Y, HEXAGON_WIDTH); this.hexagonPointList.Add(hexagonPoint); this.pictureBox.Refresh(); } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 육각형 높이 구하기 - GetHexgonHeight(width) /// <summary> /// 육각형 높이 구하기 /// </summary> /// <param name="width">너비</param> /// <returns>육각형 높이</returns> private float GetHexgonHeight(float width) { return (float)(4 * (width / 2 / Math.Sqrt(3))); } #endregion #region 육각형 포인트 배열 구하기 - GetHexagonPointArray(width, row, column) /// <summary> /// 육각형 포인트 배열 구하기 /// </summary> /// <param name="width">너비</param> /// <param name="row">행</param> /// <param name="column">열</param> /// <returns>육각형 포인트 배열</returns> private PointF[] GetHexagonPointArray(float width, float row, float column) { float height = GetHexgonHeight(width); float x = width / 2; float y = 0; x += column * width; if(row % 2 != 0) { x += width / 2; } y += row * (height * 0.75f); return new PointF[] { new PointF(x , y ), new PointF(x + width / 2, y + height * 0.25f), new PointF(x + width / 2, y + height * 0.75f), new PointF(x , y + height ), new PointF(x - width / 2, y + height * 0.75f), new PointF(x - width / 2, y + height * 0.25f), }; } #endregion #region 육각형 그리드 그리기 - DrawHexagonGrid(graphics, pen, maximumX, maximumY, height) /// <summary> /// 육각형 그리드 그리기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="pen">펜</param> /// <param name="maximumX">최대 X</param> /// <param name="maximumY">최대 Y</param> /// <param name="height">높이</param> private void DrawHexagonGrid(Graphics graphics, Pen pen, float maximumX, float maximumY, float height) { for(int row = 0; ; row++) { PointF[] hexagonPointArray = GetHexagonPointArray(height, row, 0); if(hexagonPointArray[3].Y > maximumY) { break; } for(int column = 0; ; column++) { hexagonPointArray = GetHexagonPointArray(height, row, column); if(hexagonPointArray[1].X > maximumX) { break; } if(hexagonPointArray[3].Y <= maximumY) { graphics.DrawPolygon(pen, hexagonPointArray); } } } } #endregion #region 육각형 위치 구하기 - GetHexagonPoint(x, y, width) /// <summary> /// 육각형 위치 구하기 /// </summary> /// <param name="x">X</param> /// <param name="y">Y</param> /// <param name="width">너비</param> /// <returns>육각형 위치</returns> private PointF GetHexagonPoint(float x, float y, float width) { float row; float column; float height = GetHexgonHeight(width); row = (int)(y / (height * 0.75f)); if(row % 2 == 0) { column = (int)Math.Floor(x / width); } else { column = (int)Math.Floor((x - width / 2) / width); } float testX = column * width; float testY = row * height * 0.75f; if(row % 2 != 0) { testX += width / 2; } bool isLeft = false; bool isRight = false; float deltaY = y - testY; if(deltaY < height / 4) { float deltaX = x - (testX + width / 2); if(deltaY < 0.001) { if(deltaY < 0) { isLeft = true; } if(deltaY > 0) { isRight = true; } } else if(deltaX < 0) { if(-deltaX / deltaY > Math.Sqrt(3)) { isLeft = true; } } else { if(deltaX / deltaY > Math.Sqrt(3)) { isRight = true; } } } if(isLeft) { if(row % 2 == 0) { column--; } row--; } else if(isRight) { if(row % 2 != 0) { column++; } row--; } return new PointF(row, column); } #endregion } } |
