■ 움직이는 기어를 사용하는 방법을 보여준다.
▶ MainForm.cs
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using System; 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> /// 시작 각도 /// </summary> private float startAngle = 0; /// <summary> /// 델타 시작 각도 /// </summary> private float deltaStartAngle = (float)(Math.PI / 180); #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); DoubleBuffered = true; #region 이벤트를 설정한다. this.startButton.Click += startButton_Click; this.canvasPictureBox.Paint += canvasPictureBox_Paint; this.timer.Tick += timer_Tick; #endregion } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 시작 버튼 클릭시 처리하기 - startButton_Click(sender, e) /// <summary> /// 시작 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void startButton_Click(object sender, EventArgs e) { this.timer.Enabled = !this.timer.Enabled; if(this.timer.Enabled) { this.startButton.Text = "중단하기"; } else { this.startButton.Text = "시작하기"; } } #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.SmoothingMode = SmoothingMode.AntiAlias; const float RADIUS = 50; const float TOOTH_LENGTH = 10; float x = this.canvasPictureBox.ClientSize.Width / 2 - RADIUS - TOOTH_LENGTH - 1; float y = this.canvasPictureBox.ClientSize.Height / 3; DrawGear ( this.startAngle, e.Graphics, Brushes.Black, Brushes.LightBlue, Pens.Blue, new PointF(x, y), RADIUS, TOOTH_LENGTH, 10, 5, true ); x += 2 * RADIUS + TOOTH_LENGTH + 2; DrawGear ( -this.startAngle, e.Graphics, Brushes.Black, Brushes.LightGreen, Pens.Green, new PointF(x, y), RADIUS, TOOTH_LENGTH, 10, 5, false ); y += 2f * RADIUS + TOOTH_LENGTH + 2; DrawGear ( this.startAngle, e.Graphics, Brushes.Black, Brushes.Pink, Pens.Red, new PointF(x, y), RADIUS, TOOTH_LENGTH, 10, 5, true ); } #endregion #region 타이머 틱 처리하기 - timer_Tick(sender, e) /// <summary> /// 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Tick(object sender, EventArgs e) { this.startAngle += this.deltaStartAngle; this.canvasPictureBox.Refresh(); } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 기어 그리기 - DrawGear(startAngle, graphics, axleBrush, gearBrush, gearPen, centerPoint, radius, toothLength, teethCount, axleRadius, startWithTooth) /// <summary> /// 기어 그리기 /// </summary> /// <param name="startAngle">시작 각도</param> /// <param name="graphics">그래픽스</param> /// <param name="axleBrush">차축 브러시</param> /// <param name="gearBrush">기어 브러시</param> /// <param name="gearPen">기어 펜</param> /// <param name="centerPoint">중심 포인트</param> /// <param name="radius">반지름</param> /// <param name="toothLength">톱니 길이</param> /// <param name="teethCount">톱니 카운트</param> /// <param name="axleRadius">차축 반지름</param> /// <param name="startWithTooth">톱니 시작 여부</param> private void DrawGear(float startAngle, Graphics graphics, Brush axleBrush, Brush gearBrush, Pen gearPen, PointF centerPoint, float radius, float toothLength, int teethCount, float axleRadius, bool startWithTooth) { float deltaTheta = (float)(Math.PI / teethCount); float deltaThetaDegree = (float)(deltaTheta * 180 / Math.PI); const float CHAMFER = 2; float toothWidth = radius * deltaTheta - CHAMFER; float alpha = toothWidth / (radius + toothLength); float alphaDegree = (float)(alpha * 180 / Math.PI); float phi = (deltaTheta - alpha) / 2; float theta = startAngle; if(startWithTooth) { theta += deltaTheta / 2; } else { theta -= deltaTheta / 2; } RectangleF innerRectangle = new RectangleF ( centerPoint.X - radius, centerPoint.Y - radius, 2 * radius, 2 * radius ); RectangleF outerRectangle = new RectangleF ( centerPoint.X - radius - toothLength, centerPoint.Y - radius - toothLength, 2 * (radius + toothLength), 2 * (radius + toothLength) ); GraphicsPath graphicsPath = new GraphicsPath(); for(int i = 0; i < teethCount; i++) { float degree = (float)(theta * 180 / Math.PI); graphicsPath.AddArc(innerRectangle, degree, deltaThetaDegree); theta += deltaTheta; degree = (float)((theta + phi) * 180 / Math.PI); graphicsPath.AddArc(outerRectangle, degree, alphaDegree); theta += deltaTheta; } graphicsPath.CloseFigure(); graphics.FillPath(gearBrush, graphicsPath); graphics.DrawPath(gearPen, graphicsPath); graphics.FillEllipse ( axleBrush, centerPoint.X - axleRadius, centerPoint.Y - axleRadius, 2 * axleRadius, 2 * axleRadius ); } #endregion } } |
