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plurals

PO
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4554954
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0
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0
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1
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2010-12-29T14:32:51.603
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2010-12-29T14:32:51.603
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356716
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4554698
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2
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2
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0
LastEditorDisplayName
text
Body
<p>Try to use a separate <code>GraphicsPath</code> for excluded region:</p> <pre><code>private void drawCurvedLine() { //initialise the plot area: Bitmap image = new Bitmap(pictureBox1.Width, pictureBox1.Height); pictureBox1.BackgroundImage = image; using(Graphics g = Graphics.FromImage(image)) { PointF[] points = new PointF[4]; //first straight: points[0] = new PointF(287.284149F, 21.236269F); points[1] = new PointF(183.638443F, 406.936249F); //second straight: points[2] = new PointF(130.842773F, 515.574036F); points[3] = new PointF(-1950.91321F, 3491.868F); //graphics path for the line: using(GraphicsPath gPath = new GraphicsPath()) { gPath.AddLine(points[0], points[1]); gPath.AddArc(new RectangleF(-445.464447F, 3.84924316F, 640.067444F, 640.067444F), -(90 - 105.0412369999982F), 10.8775282F); gPath.AddArc(new RectangleF(-445.464417F, 3.84915161F, 640.067444F, 640.067444F), -(90 - 115.91811484539707F), 10.8775091F); gPath.AddLine(points[2], points[3]); //widen the line to the width equal to what the fish will not be able to see: using(GraphicsPath innerPath = (GraphicsPath)gPath.Clone()) { using(Pen pen = new Pen(Color.White, 10)) { innerPath.Widen(pen); } //now exclude that widened line from the main graphics: using(Region reg = new Region(innerPath)) { g.ExcludeClip(reg); //draw the swathe line: //the width of the pen represents the width of a sonar swathe: using(Pen widePen = new Pen(new SolidBrush(Color.FromArgb(80, Color.Blue)), 50)) { g.DrawPath(widePen, gPath); } //reset the clipping for the next line: g.ResetClip(); } } } } } </code></pre>
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1. POC# GDI+ curve drawing issue
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1. POC# GDI+ curve drawing issue
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1. COThanks, that works really well!
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