71 lines
2.1 KiB
C#
71 lines
2.1 KiB
C#
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining
|
|
// a copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to
|
|
// permit persons to whom the Software is furnished to do so, subject to
|
|
// the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be
|
|
// included in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
//
|
|
|
|
using System;
|
|
using Cairo;
|
|
using System.Windows.Forms;
|
|
|
|
public class SwfCairo : Form
|
|
{
|
|
static void Main ()
|
|
{
|
|
SwfCairo f = new SwfCairo ();
|
|
f.ShowDialog ();
|
|
}
|
|
|
|
protected override void OnPaint (PaintEventArgs a)
|
|
{
|
|
IntPtr hdc = a.Graphics.GetHdc ();
|
|
Win32Surface s = new Win32Surface (hdc);
|
|
Context cr = new Context (s);
|
|
draw (cr, this.Width, this.Height);
|
|
|
|
a.Graphics.ReleaseHdc (hdc);
|
|
}
|
|
|
|
static void draw (Context cr, int width, int height)
|
|
{
|
|
double xc = 0.5;
|
|
double yc = 0.5;
|
|
double radius = 0.4;
|
|
double angle1 = 45.0 * (Math.PI / 180.0); // angles are specified
|
|
double angle2 = 180.0 * (Math.PI / 180.0); // in radians
|
|
|
|
cr.Scale (width, height);
|
|
cr.LineWidth = 0.04;
|
|
|
|
cr.Arc (xc, yc, radius, angle1, angle2);
|
|
cr.Stroke ();
|
|
|
|
// draw helping lines
|
|
cr.Color = new Color(1, 0.2, 0.2, 0.6);
|
|
cr.Arc (xc, yc, 0.05, 0, 2 * Math.PI);
|
|
cr.Fill ();
|
|
cr.LineWidth = 0.03;
|
|
cr.Arc (xc, yc, radius, angle1, angle1);
|
|
cr.LineTo (new PointD (xc, yc));
|
|
cr.Arc (xc, yc, radius, angle2, angle2);
|
|
cr.LineTo (new PointD (xc, yc));
|
|
cr.Stroke ();
|
|
}
|
|
}
|
|
|