Control PathClip()
{
var control = new Drawable { Size = new Size(350, 250) };
control.Paint += (sender, e) =>
{
var path = new GraphicsPath();
path.AddEllipse(25, 25, 50, 50);
path.AddRectangle(125, 25, 50, 50);
path.AddLines(new PointF(225, 25), new PointF(225, 75), new PointF(275, 50));
path.CloseFigure();
e.Graphics.SetClip(path);
if (ResetClip)
e.Graphics.ResetClip();
e.Graphics.FillRectangle(Brushes.Blue, path.Bounds);
path.Transform(Matrix.FromTranslation(0, 75));
e.Graphics.SetClip(path);
if (ResetClip)
e.Graphics.ResetClip();
e.Graphics.FillRectangle(Brushes.Red, path.Bounds);
path.Transform(Matrix.FromTranslation(0, 75));
e.Graphics.SetClip(path);
if (ResetClip)
e.Graphics.ResetClip();
e.Graphics.FillRectangle(Brushes.Green, path.Bounds);
};
PropertyChanged += (sender, e) =>
{
if (e.PropertyName == "ResetClip")
control.Invalidate();
};
return control;
}
void Draw(Graphics g, Action<Pen> action)
{
var path = new GraphicsPath();
path.AddLines(new PointF(0, 0), new PointF(100, 40), new PointF(0, 30), new PointF(50, 70));
for (int i = 0; i < 4; i++)
{
float thickness = 1f + i * PenThickness;
var pen = new Pen(Colors.Black, thickness);
pen.LineCap = this.LineCap;
pen.LineJoin = this.LineJoin;
pen.DashStyle = this.DashStyle;
if (action != null)
action(pen);
var y = i * 20;
g.DrawLine(pen, 10, y, 110, y);
y = 80 + i * 50;
g.DrawRectangle(pen, 10, y, 100, 30);
y = i * 70;
g.DrawArc(pen, 140, y, 100, 80, 160, 160);
y = i * 70;
g.DrawEllipse(pen, 260, y, 100, 50);
g.SaveTransform();
y = i * 70;
g.TranslateTransform(400, y);
g.DrawPath(pen, path);
g.RestoreTransform();
}
}
/// <summary>
/// Draws a polygon with the specified <paramref name="points"/>
/// </summary>
/// <param name="color">Color to draw the polygon lines</param>
/// <param name="points">Points of the polygon</param>
public void DrawPolygon (Color color, IEnumerable<Point> points)
{
var path = new GraphicsPath (Generator);
path.AddLines (points);
DrawPath (color, path);
}
GraphicsPath CreatePath()
{
var newPath = new GraphicsPath();
var start = StartFigures;
var close = CloseFigures;
// connected segments
newPath.MoveTo(10, 10);
newPath.LineTo(20, 90);
newPath.LineTo(10, 60);
newPath.LineTo(90, 80);
newPath.LineTo(60, 30);
if (close && start)
newPath.CloseFigure();
if (start)
newPath.StartFigure();
newPath.AddArc(100, 0, 100, 50, 200, -160);
if (close && start)
newPath.CloseFigure();
if (start)
newPath.StartFigure();
newPath.AddBezier(new PointF(200, 10), new PointF(285, 20), new PointF(210, 85), new PointF(300, 90));
if (close && start)
newPath.CloseFigure();
if (start)
newPath.StartFigure();
newPath.AddCurve(new PointF(310, 90), new PointF(390, 90), new PointF(390, 10), new PointF(310, 10));
if (close && start)
newPath.CloseFigure();
if (start)
newPath.StartFigure();
newPath.AddLine(410, 10, 410, 90);
if (close && start)
newPath.CloseFigure();
if (start)
newPath.StartFigure();
newPath.AddLines(new PointF(420, 10), new PointF(420, 90));
if (close && start)
newPath.CloseFigure();
if (start)
newPath.StartFigure();
newPath.AddLines(new PointF(430, 10), new PointF(430, 90));
if (close)
newPath.CloseFigure();
// separate segments
if (start)
newPath.StartFigure();
newPath.AddEllipse(100, 100, 100, 45);
if (close)
newPath.CloseFigure();
if (start)
newPath.StartFigure();
newPath.AddRectangle(10, 110, 80, 80);
if (close)
newPath.CloseFigure();
// at the end, draw a line so we can potentially connect to parent path
if (start)
newPath.StartFigure();
newPath.AddLines(new PointF(440, 10), new PointF(440, 90));
if (close)
newPath.CloseFigure();
return newPath;
}
/// <summary>
/// Draws an outline of a polygon with the specified <paramref name="points"/>
/// </summary>
/// <param name="pen">Color to draw the polygon lines</param>
/// <param name="points">Points of the polygon</param>
public void DrawPolygon (Pen pen, params PointF[] points)
{
var path = new GraphicsPath (Generator);
path.AddLines (points);
DrawPath (pen, path);
}
/// <summary>
/// Draws a 1 pixel wide outline of a polygon with the specified <paramref name="points"/>
/// </summary>
/// <param name="color">Color to draw the polygon lines</param>
/// <param name="points">Points of the polygon</param>
public void DrawPolygon (Color color, params PointF[] points)
{
var path = new GraphicsPath (Generator);
path.AddLines (points);
using (var pen = new Pen (color, 1f, Generator))
DrawPath (pen, path);
}
/// <summary>
/// Fills a polygon defined by <paramref name="points"/> with the specified <paramref name="brush"/>
/// </summary>
/// <param name="brush">Brush to fill the polygon</param>
/// <param name="points">Points of the polygon</param>
public void FillPolygon (Brush brush, params PointF[] points)
{
var path = new GraphicsPath (Generator);
path.AddLines (points);
FillPath (brush, path);
}
/// <summary>
/// Fills a polygon defined by <paramref name="points"/> with the specified <paramref name="color"/>
/// </summary>
/// <param name="color">Fill color</param>
/// <param name="points">Points of the polygon</param>
public void FillPolygon (Color color, params PointF[] points)
{
var path = new GraphicsPath (Generator);
path.AddLines (points);
using (var brush = new SolidBrush (color, Generator))
FillPath (brush, path);
}
/// <summary>
/// Draws an outline of a polygon with the specified <paramref name="points"/>
/// </summary>
/// <param name="pen">Color to draw the polygon lines</param>
/// <param name="points">Points of the polygon</param>
public void DrawPolygon(Pen pen, params PointF[] points)
{
var path = new GraphicsPath();
path.AddLines(points);
path.LineTo(points[0]);
DrawPath(pen, path);
}