Cool Angle Select Control (Photoshop style)

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Introduction

Hi everybody! this is the first time i decided to release a code of mine on codeproject. it's quite straight forward, i don't have much to say about it, and i think the picture above describe it pretty well.

basically, i needed a control to select an angle, and i made the one above. I saw the one used on Photoshop, and decided to create one of my own.

The implementation is really simple, as the code below shows:

/// <summary>

/// Event - User is moving the mouse.

/// </summary>

private void AngleSelect_MouseMove(object sender, MouseEventArgs e)

{

    if (Clicked == true)

    {

        //if mouse down, change the Angle.

        Point centerPoint = new Point(ClientRectangle.Width / 2, ClientRectangle.Height / 2);

        Point mousePos = ((MouseEventArgs)e).Location;

        //Using the Atan2 function in order to get the Angle of the Slope between the center Point of the control and the Mouse Point.

        double radians = Math.Atan2(mousePos.Y - centerPoint.Y, mousePos.X - centerPoint.X);

        //Then converting from Radians to regular Units.

        angle = (int)(radians * (180 / Math.PI));

        Refresh();

        //call delegated function

        try

        {

            angleChanged(angle);

        }

        catch { }

    }

}

Here are the main Properties the events to use:

FillColor - Sets the Circle's fill color.
LineColor - Sets the Circles's line color.
angleChanged - (event) Called when ever the user is changing the Angle.
Angle - Sets or Gets the angle of the control.

Hope, you'll find this useful.

Roey