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Transparent filled EllipseVObject (with a glow effect)
Rank: Member
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Joined: 8/21/2007(UTC)
Posts: 4
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I am trying to create the effect of adding a "light bulb" at the location of where a user clicks their mouse within a MultiLayerViewer Control. (For instance, the user clicks the mouse at a certain location and it appears that there is an elluminated light at that location). I would like for the user to be able to later move this "light bulb" around on the canvas.
I initially implemented this by simply drawing an Ellipse on the canvas, but would like to spruse this up a bit. The idea behind the transparency fill and a glow effect is to simulate intensity. Is this possible on an Ellipse object? If not, do you have any ideas on how to simluate this effect?
Your help and insight would greatly be appreciated.
thanks...
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Rank: Advanced Member
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Joined: 1/31/2005(UTC)
Posts: 458
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Hi Dustin, Hm... I've played a little with brushes and can suggest you the following code to create "light bulb": Code: System.Drawing.RectangleF objBorders = obj.GetVObjectBounds(); //where obj is EllipseVObject
[code=c#] System.Drawing.Drawing2D.GraphicsPath bulbPath = new System.Drawing.Drawing2D.GraphicsPath();
bulbPath.AddEllipse(objBorders.X, objBorders.Y, objBorders.Width, objBorders.Height);
System.Drawing.Drawing2D.PathGradientBrush bulbBrush = new System.Drawing.Drawing2D.PathGradientBrush(bulbPath);
bulbBrush.CenterColor = System.Drawing.Color.FromArgb(192, System.Drawing.Color.Yellow);
bulbBrush.SurroundColors = new System.Drawing.Color[] { System.Drawing.Color.Transparent };
obj.Brush = bulbBrush;
obj.Pen = null;
Feel free to contact me if you intended to get something else :) Edited by user Monday, December 17, 2007 12:55:00 PM(UTC)
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Rank: Member
Groups: Member
Joined: 8/21/2007(UTC)
Posts: 4
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That worked perfectly Alex! Thank you for your time.
Dustin
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Rank: Advanced Member
Groups: Member
Joined: 1/31/2005(UTC)
Posts: 458
Was thanked: 5 time(s) in 5 post(s)
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Great! :) I'm pleased to help you.
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Transparent filled EllipseVObject (with a glow effect)
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