public static void DrawPipes(this Graphics g, float width, SegmentList poly, Color mid_color, Color edge_color)
{
for (int i = 0; i < poly.Lines.Count; i++)
{
using (GraphicsPath gp = new GraphicsPath())
{
var start = poly.Lines[i].StartPoint;
gp.AddEllipse(start.Center.X - width / 2, start.Center.Y - width / 2, width, width);
if (i == poly.Lines.Count - 1)
{
var end = poly.Lines[i].EndPoint;
gp.AddEllipse(end.Center.X - width / 2, end.Center.Y - width / 2, width, width);
}
using (PathGradientBrush brush = new PathGradientBrush(gp))
{
brush.CenterColor = mid_color;
brush.SurroundColors = new Color[] { edge_color };
brush.CenterPoint = start.Center;
g.FillPath(brush, gp);
}
}
if (i > 0)
{
DrawPipe(g, width, poly.Lines[i], mid_color, edge_color);
}
}
}
public PolyLineForm()
{
this.DoubleBuffered = true;
InitializeComponent();
DrawScale = new SizeF(1, -1);
DrawOrigin = new PointF(pictureBox1.Width / 2, pictureBox1.Height / 2);
Selected = -1;
Poly = new SegmentList(true,
new PointF(-90, -90),
new PointF(0, -30),
new PointF(90, -90),
new PointF(60, 60),
new PointF(0, 30),
new PointF(-60, 60));
this.pictureBox1.Paint += new PaintEventHandler(pictureBox1_Paint);
this.pictureBox1.Resize += new EventHandler(pictureBox1_Resize);
this.pictureBox1.MouseDown += new MouseEventHandler(pictureBox1_MouseDown);
this.pictureBox1.MouseUp += new MouseEventHandler(pictureBox1_MouseUp);
this.pictureBox1.MouseMove += new MouseEventHandler(pictureBox1_MouseMove);
}
private void pictureBox1_Paint(object sender, PaintEventArgs e)
{
e.Graphics.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High;
e.Graphics.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;
e.Graphics.TranslateTransform(DrawOrigin.X, DrawOrigin.Y);
e.Graphics.ScaleTransform(DrawScale.Width, DrawScale.Height);
SegmentList L1 = Poly.Offset(7);
SegmentList L2 = Poly.Offset(-7);
for (int i = 0; i < Count; i++)
{
using (Pen pen = new Pen(Color.Black, 1))
{
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid;
e.Graphics.DrawPoint(Poly.Lines[i].StartPoint, pen);
e.Graphics.DrawPoint(Poly.Lines[i].EndPoint, pen);
pen.Width = 2;
e.Graphics.DrawLine(L1.Lines[i], pen);
e.Graphics.DrawLine(L2.Lines[i], pen);
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;
pen.Width = 1;
//e.Graphics.DrawPipe(12f, Poly.Lines[i], Color.Yellow, Color.Black);
//e.Graphics.DrawLine(Poly.Lines[i], pen);
}
if (i == Selected)
{
using (Pen pen = new Pen(Color.FromArgb(92, 250, 92, 92), 2))
{
pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid;
e.Graphics.DrawLine(L1.Lines[i].Offset(2), pen);
e.Graphics.DrawLine(L2.Lines[i].Offset(-2), pen);
//e.Graphics.DrawLine(Poly.Lines[i], pen);
}
}
}
}
