■ 호(arc)를 그리고 이동하고 수정하는 방법을 보여준다.
▶ ICONINFORMATION.cs
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using System; using System.Runtime.InteropServices; namespace TestProject { /// <summary> /// 아이콘 정보 /// </summary> [StructLayout(LayoutKind.Sequential)] public struct ICONINFORMATION { //////////////////////////////////////////////////////////////////////////////////////////////////// Public ////////////////////////////////////////////////////////////////////////////////////////// Field #region Field /// <summary> /// 아이콘 여부 /// </summary> public bool IsIcon; /// <summary> /// 핫스팟 X /// </summary> public int hotSpotX; /// <summary> /// 핫스팟 Y /// </summary> public int hotSpotY; /// <summary> /// 마스크 비트맵 핸들 /// </summary> public IntPtr maskBitmapHandle; /// <summary> /// 색상 비트맵 핸들 /// </summary> public IntPtr colorBitmapHandle; #endregion } } |
▶ ArcPart.cs
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namespace TestProject { /// <summary> /// 호 파트 /// </summary> public enum ArcPart { /// <summary> /// 해당 무 /// </summary> None, /// <summary> /// 시작 포인트 /// </summary> StartPoint, /// <summary> /// 종료 포인트 /// </summary> EndPoint, /// <summary> /// 몸체 /// </summary> Body, } } |
▶ Arc.cs
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using System; using System.Collections.Generic; using System.Drawing; namespace TestProject { /// <summary> /// 호 /// </summary> public class Arc { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Public #region Field /// <summary> /// 종단 포인트 배열 /// </summary> public PointF[] EndPointArray = null; #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 경계 사각형 /// </summary> private RectangleF boundRectangle; /// <summary> /// 시작 각도 /// </summary> private float startAngle; /// <summary> /// 스윕 각도 /// </summary> private float sweepAngle; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Property ////////////////////////////////////////////////////////////////////////////////////////// Public #region 경계 사각형 - BoundRectangle /// <summary> /// 경계 사각형 /// </summary> public RectangleF BoundRectangle { get { return this.boundRectangle; } set { this.boundRectangle = value; SetArcEndPoint(); } } #endregion #region 시작 각도 - StartAngle /// <summary> /// 시작 각도 /// </summary> public float StartAngle { get { return this.startAngle; } set { this.startAngle = value; SetArcEndPoint(); } } #endregion #region 스윕 각도 - SweepAngle /// <summary> /// 스윕 각도 /// </summary> public float SweepAngle { get { return this.sweepAngle; } set { this.sweepAngle = value; SetArcEndPoint(); } } #endregion #region 종료 각도 - EndAngle /// <summary> /// 종료 각도 /// </summary> public float EndAngle { get { return this.startAngle + this.sweepAngle; } } #endregion #region 중심 포인트 - CenterPoint /// <summary> /// 중심 포인트 /// </summary> public PointF CenterPoint { get { return new PointF ( BoundRectangle.X + BoundRectangle.Width / 2, BoundRectangle.Y + BoundRectangle.Height / 2 ); } } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - Arc(boundRectangle, startAngle, sweepAngle) /// <summary> /// 생성자 /// </summary> /// <param name="boundRectangle">경계 사각형</param> /// <param name="startAngle">시작 각도</param> /// <param name="sweepAngle">스윕 각도</param> public Arc(RectangleF boundRectangle, float startAngle, float sweepAngle) { this.boundRectangle = boundRectangle; this.startAngle = startAngle; this.sweepAngle = sweepAngle; if(this.sweepAngle < 0) { this.startAngle += this.sweepAngle; this.sweepAngle = -this.sweepAngle; } while(this.startAngle < 0) { this.startAngle += 360; } while(this.startAngle > 360) { this.startAngle -= 360; } SetArcEndPoint(); } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Public #region 그리기 - Draw(graphics, brush, pen) /// <summary> /// 그리기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="brush">브러시</param> /// <param name="pen">펜</param> public void Draw(Graphics graphics, Brush brush, Pen pen) { if((BoundRectangle.Width == 0) || (BoundRectangle.Height == 0)) { return; } if(brush != null) { graphics.FillPie ( brush, BoundRectangle.X, BoundRectangle.Y, BoundRectangle.Width, BoundRectangle.Height, StartAngle, SweepAngle ); } if(pen != null) { graphics.DrawArc ( pen, BoundRectangle.X, BoundRectangle.Y, BoundRectangle.Width, BoundRectangle.Height, StartAngle, SweepAngle ); } } #endregion #region 종단 포인트 그리기 - DrawEndPoint(graphics, brush, pen, radius) /// <summary> /// 종단 포인트 그리기 /// </summary> /// <param name="graphics">그래픽스</param> /// <param name="brush">브러시</param> /// <param name="pen">펜</param> /// <param name="radius">반경</param> public void DrawEndPoint(Graphics graphics, Brush brush, Pen pen, float radius) { for(int i = 0; i < 2; i++) { RectangleF rectangle = new RectangleF ( EndPointArray[i].X - radius, EndPointArray[i].Y - radius, 2 * radius, 2 * radius ); if(brush != null) { graphics.FillRectangle(brush, rectangle); } if(pen != null) { graphics.DrawRectangle(pen, rectangle.X, rectangle.Y, rectangle.Width, rectangle.Height); } } } #endregion #region 호 파트 구하기 - GetArcPart(target, radius) /// <summary> /// 호 파트 구하기 /// </summary> /// <param name="targetPoint">타겟 포인트</param> /// <param name="radius">반경</param> /// <returns>호 파트</returns> public ArcPart GetArcPart(Point targetPoint, float radius) { if(GetDistance(targetPoint, EndPointArray[0]) < radius) { return ArcPart.StartPoint; } if(GetDistance(targetPoint, EndPointArray[1]) < radius) { return ArcPart.EndPoint; } PointF centerPoint = CenterPoint; float deltaX = targetPoint.X - centerPoint.X; float deltaY = targetPoint.Y - centerPoint.Y; float radian = (float)Math.Atan2(deltaY, deltaX); float degree = (float)(radian * 180 / Math.PI); while(degree < 0) { degree += 360; } if((degree < StartAngle) || (degree > StartAngle + SweepAngle)) { return ArcPart.None; } PointF[] intersectionPointArray = FindEllipseSegmentIntersectionPointArray ( BoundRectangle, centerPoint, targetPoint, false ); for(int i = 0; i < intersectionPointArray.Length; i++) { if(GetDistance(targetPoint, intersectionPointArray[i]) < radius) { return ArcPart.Body; } } return ArcPart.None; } #endregion #region 이동하기 - Move(deltaX, deltaY) /// <summary> /// 이동하기 /// </summary> /// <param name="deltaX">델타 X</param> /// <param name="deltaY">델타 Y</param> public void Move(int deltaX, int deltaY) { BoundRectangle = new RectangleF ( BoundRectangle.X + deltaX, BoundRectangle.Y + deltaY, BoundRectangle.Width, BoundRectangle.Height ); } #endregion #region 시작 포인트 이동하기 - MoveStartPoint(point) /// <summary> /// 시작 포인트 이동하기 /// </summary> /// <param name="point">포인트</param> public void MoveStartPoint(PointF point) { PointF centerPoint = CenterPoint; float deltaX = point.X - centerPoint.X; float deltaY = point.Y - centerPoint.Y; if((deltaX == 0) && (deltaY == 0)) { return; } float startAngle = (float)(Math.Atan2(deltaY, deltaX) * 180 / Math.PI); if(startAngle < 0) { startAngle += 360; } float endAngle = StartAngle + SweepAngle; while(endAngle < startAngle) { endAngle += 360; } while(endAngle > startAngle + 360) { endAngle -= 360; } float sweepAngle = endAngle - startAngle; StartAngle = startAngle; SweepAngle = sweepAngle; } #endregion #region 종료 포인트 이동하기 - MoveEndPoint(point) /// <summary> /// 종료 포인트 이동하기 /// </summary> /// <param name="point">포인트</param> public void MoveEndPoint(PointF point) { PointF centerPoint = CenterPoint; float deltaX = point.X - centerPoint.X; float deltaY = point.Y - centerPoint.Y; if((deltaX == 0) && (deltaY == 0)) { return; } float endAngle = (float)(Math.Atan2(deltaY, deltaX) * 180 / Math.PI); while(endAngle < StartAngle) { endAngle += 360; } while(endAngle > StartAngle + 360) { endAngle -= 360; } SweepAngle = endAngle - StartAngle; } #endregion ////////////////////////////////////////////////////////////////////////////////////////// Private #region 거리 구하기 - GetDistance(point1, point2) /// <summary> /// 거리 구하기 /// </summary> /// <param name="point1">포인트 1</param> /// <param name="point2">포인트 2</param> /// <returns>거리 구하기</returns> private float GetDistance(PointF point1, PointF point2) { float deltaX = point1.X - point2.X; float deltaY = point1.Y - point2.Y; return (float)Math.Sqrt(deltaX * deltaX + deltaY * deltaY); } #endregion #region 타원 세그먼트 교차 포인트 배열 구하기 - FindEllipseSegmentIntersectionPointArray(rectangle, point1, point2, segmentonly) /// <summary> /// 타원 세그먼트 교차 포인트 배열 구하기 /// </summary> /// <param name="rectangle">사각형</param> /// <param name="point1">포인트 1</param> /// <param name="point2">포인트 2</param> /// <param name="segmentonly">세그먼트 전용 여부</param> /// <returns>타원 세그먼트 교차 포인트 배열</returns> private static PointF[] FindEllipseSegmentIntersectionPointArray ( RectangleF rectangle, PointF point1, PointF point2, bool segmentonly ) { if((rectangle.Width == 0) || (rectangle.Height == 0) || ((point1.X == point2.X) && (point1.Y == point2.Y))) { return new PointF[] { }; } if(rectangle.Width < 0) { rectangle.X = rectangle.Right; rectangle.Width = -rectangle.Width; } if(rectangle.Height < 0) { rectangle.Y = rectangle.Bottom; rectangle.Height = -rectangle.Height; } float centerX = rectangle.Left + rectangle.Width / 2f; float centerY = rectangle.Top + rectangle.Height / 2f; rectangle.X -= centerX; rectangle.Y -= centerY; point1.X -= centerX; point1.Y -= centerY; point2.X -= centerX; point2.Y -= centerY; float a = rectangle.Width / 2; float b = rectangle.Height / 2; float A = (point2.X - point1.X) * (point2.X - point1.X) / a / a + (point2.Y - point1.Y) * (point2.Y - point1.Y) / b / b; float B = 2 * point1.X * (point2.X - point1.X) / a / a + 2 * point1.Y * (point2.Y - point1.Y) / b / b; float C = point1.X * point1.X / a / a + point1.Y * point1.Y / b / b - 1; List<float> valueList = new List<float>(); float discriminant = B * B - 4 * A * C; if(discriminant == 0) { valueList.Add(-B / 2 / A); } else if(discriminant > 0) { valueList.Add((float)((-B + Math.Sqrt(discriminant)) / 2 / A)); valueList.Add((float)((-B - Math.Sqrt(discriminant)) / 2 / A)); } List<PointF> pointList = new List<PointF>(); foreach(float value in valueList) { if(!segmentonly || ((value >= 0f) && (value <= 1f))) { float x = point1.X + (point2.X - point1.X) * value + centerX; float y = point1.Y + (point2.Y - point1.Y) * value + centerY; pointList.Add(new PointF(x, y)); } } return pointList.ToArray(); } #endregion #region 호 종단 포인트 설정하기 - SetArcEndPoint() /// <summary> /// 호 종단 포인트 설정하기 /// </summary> private void SetArcEndPoint() { PointF centerPoint = new PointF ( BoundRectangle.X + BoundRectangle.Width / 2f, BoundRectangle.Y + BoundRectangle.Height / 2f ); if((BoundRectangle.Width == 0) || (BoundRectangle.Height == 0)) { EndPointArray = new PointF[] { centerPoint, centerPoint }; return; } double startRadian = StartAngle * Math.PI / 180; double endRadian = EndAngle * Math.PI / 180; float distance = BoundRectangle.Width + BoundRectangle.Height; PointF point1 = new PointF ( (float)(centerPoint.X + distance * Math.Cos(startRadian)), (float)(centerPoint.Y + distance * Math.Sin(startRadian)) ); PointF point2 = new PointF ( (float)(centerPoint.X + distance * Math.Cos(endRadian)), (float)(centerPoint.Y + distance * Math.Sin(endRadian)) ); PointF[] intersectionPointArray1 = FindEllipseSegmentIntersectionPointArray ( BoundRectangle, centerPoint, point1, true ); PointF[] intersectionPointArray2 = FindEllipseSegmentIntersectionPointArray ( BoundRectangle, centerPoint, point2, true ); EndPointArray = new PointF[] { intersectionPointArray1[0], intersectionPointArray2[0] }; } #endregion } } |
▶ MainForm.cs
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using System; using System.Collections.Generic; using System.Drawing; using System.Drawing.Drawing2D; using System.Runtime.InteropServices; using System.Windows.Forms; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region 아이콘 정보 구하기 - GetIconInfo(iconHandle, iconInformation) /// <summary> /// 아이콘 정보 구하기 /// </summary> /// <param name="iconHandle">아이콘 핸들</param> /// <param name="iconInformation">아이콘 정보</param> /// <returns>처리 결과</returns> [DllImport("user32.dll")] private static extern bool GetIconInfo(IntPtr iconHandle, out ICONINFORMATION iconInformation); #endregion #region 아이콘 간접 생성하기 - CreateIconIndirect(iconInformation) /// <summary> /// 아이콘 간접 생성하기 /// </summary> /// <param name="iconInformation">아이콘 정보</param> /// <returns>아이콘 핸들</returns> [DllImport("user32.dll")] private static extern IntPtr CreateIconIndirect([In] ref ICONINFORMATION iconInformation); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 반경 /// </summary> private const int RADIUS = 3; /// <summary> /// 신규 호 /// </summary> private Arc newArc = null; /// <summary> /// 시작 포인트 /// </summary> private Point startPoint; /// <summary> /// 호 리스트 /// </summary> private List<Arc> arcList = new List<Arc>(); /// <summary> /// 마우스 아래 호 /// </summary> private Arc arcUnderMouse = null; /// <summary> /// 마우스 아래 호 파트 /// </summary> private ArcPart arcPartUnderMouse = ArcPart.None; /// <summary> /// 아크 커서 /// </summary> private Cursor arcCursor; /// <summary> /// 마우스 DOWN 여부 /// </summary> private bool isMouseDown = false; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); Load += Form_Load; this.canvas.MouseMove += canvas_MouseMove; this.canvas.MouseDown += canvas_MouseDown; this.canvas.MouseUp += canvas_MouseUp; this.canvas.Paint += canvas_Paint; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 폼 로드시 처리하기 - Form_Load(sender, e) /// <summary> /// 폼 로드시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void Form_Load(object sender, EventArgs e) { Bitmap bitmap = new Bitmap("IMAGE\\arc_cursor.png"); bitmap.MakeTransparent(Color.White); this.arcCursor = GetCursor(bitmap, 7, 6); } #endregion #region 캔버스 페인트시 처리하기 - canvas_Paint(sender, e) /// <summary> /// 캔버스 페인트시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void canvas_Paint(object sender, PaintEventArgs e) { e.Graphics.Clear(this.canvas.BackColor); e.Graphics.SmoothingMode = SmoothingMode.AntiAlias; Color color = Color.FromArgb ( Color.LightBlue.R, Color.LightBlue.G, Color.LightBlue.B, 128 ); using(Pen pen = new Pen(color, 5)) { foreach(Arc arc in this.arcList) { arc.Draw(e.Graphics, null, Pens.Black); } } foreach(Arc arc in this.arcList) { arc.DrawEndPoint(e.Graphics, Brushes.White, Pens.Black, RADIUS); } if(this.newArc != null) { using(Pen pen = new Pen(Color.Blue)) { pen.DashPattern = new float[] { 5, 5 }; this.newArc.Draw(e.Graphics, null, pen); pen.Color = Color.Green; e.Graphics.DrawRectangle ( pen, this.newArc.BoundRectangle.X, this.newArc.BoundRectangle.Y, this.newArc.BoundRectangle.Width, this.newArc.BoundRectangle.Height ); } } } #endregion #region 캔버스 마우스 DOWN 처리하기 - canvas_MouseDown(sender, e) /// <summary> /// 캔버스 마우스 DOWN 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void canvas_MouseDown(object sender, MouseEventArgs e) { if(this.arcPartUnderMouse == ArcPart.Body) { this.startPoint = e.Location; } else if(this.arcPartUnderMouse == ArcPart.None) { this.startPoint = e.Location; Rectangle rectangle = new Rectangle(startPoint, new Size(0, 0)); this.newArc = new Arc(rectangle, 270, 90); } this.isMouseDown = true; } #endregion #region 캔버스 마우스 이동시 처리하기 - canvas_MouseMove(sender, e) /// <summary> /// 캔버스 마우스 이동시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void canvas_MouseMove(object sender, MouseEventArgs e) { if(this.isMouseDown) { switch(this.arcPartUnderMouse) { case ArcPart.Body : int deltaX = e.Location.X - this.startPoint.X; int deltaY = e.Location.Y - this.startPoint.Y; this.arcUnderMouse.Move(deltaX, deltaY); this.startPoint = e.Location; this.canvas.Refresh(); break; case ArcPart.StartPoint : this.arcUnderMouse.MoveStartPoint(e.Location); this.canvas.Refresh(); break; case ArcPart.EndPoint : this.arcUnderMouse.MoveEndPoint(e.Location); this.canvas.Refresh(); break; case ArcPart.None : default : this.newArc.BoundRectangle = GetRectangle(this.startPoint, e.Location); this.canvas.Refresh(); break; } } else { foreach(Arc arc in this.arcList) { ArcPart arcPart = arc.GetArcPart(e.Location, RADIUS); if(arcPart != ArcPart.None) { this.arcUnderMouse = arc; this.arcPartUnderMouse = arcPart; switch(arcPart) { case ArcPart.StartPoint : this.canvas.Cursor = Cursors.Cross; break; case ArcPart.EndPoint : this.canvas.Cursor = Cursors.Cross; break; case ArcPart.Body : this.canvas.Cursor = Cursors.SizeAll; break; } return; } } this.arcUnderMouse = null; this.arcPartUnderMouse = ArcPart.None; this.canvas.Cursor = this.arcCursor; } } #endregion #region 캔버스 마우스 UP 처리하기 - canvas_MouseUp(sender, e) /// <summary> /// 캔버스 마우스 UP 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void canvas_MouseUp(object sender, MouseEventArgs e) { if(this.isMouseDown) { if(this.arcPartUnderMouse == ArcPart.None) { if((this.newArc.BoundRectangle.Width > 0) && (this.newArc.BoundRectangle.Height > 0)) { this.arcList.Add(this.newArc); } this.newArc = null; this.canvas.Refresh(); } this.isMouseDown = false; } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 커서 구하기 - GetCursor(bitmap, hotSpotX, hotSpotY) /// <summary> /// 커서 구하기 /// </summary> /// <param name="bitmap">비트맵</param> /// <param name="hotSpotX">핫 스팟 X</param> /// <param name="hotSpotY">핫 스팟 Y</param> /// <returns>커서</returns> private Cursor GetCursor(Bitmap bitmap, int hotSpotX, int hotSpotY) { ICONINFORMATION information = new ICONINFORMATION(); IntPtr iconHandle = bitmap.GetHicon(); GetIconInfo(iconHandle, out information); information.IsIcon = false; information.hotSpotX = hotSpotX; information.hotSpotY = hotSpotY; IntPtr cursorHandle = CreateIconIndirect(ref information); return new Cursor(cursorHandle); } #endregion #region 사각형 구하기 - GetRectangle(startPoint, endPoint) /// <summary> /// 사각형 구하기 /// </summary> /// <param name="startPoint">시작 포인트</param> /// <param name="endPoint">종료 포인트</param> /// <returns>사각형</returns> private RectangleF GetRectangle(Point startPoint, Point endPoint) { return new RectangleF ( Math.Min(startPoint.X, endPoint.X), Math.Min(startPoint.Y, endPoint.Y), Math.Abs(startPoint.X - endPoint.X), Math.Abs(startPoint.Y - endPoint.Y) ); } #endregion } } |
