The Angle Line Line edit control provides a graphical user interface to the AngleLineLine method, which returns the angle measured from LineA to LineB. The edit control allows you to configure the two lines, dictate which graphics appear as the tool executes, and view tool results. The following figure shows the Angle Line Line edit control:

The edit control offers the following features:

• A row of control buttons at the top left
• A set of function tabs to define the two lines, choose what graphics the tool will use, and view the angle result
• An image display window for displaying Angle Line Line tool images and graphics

You can experiment with the edit control by using QuickBuild to create a CogAngleLineLineTool tool. A new CogAngleLineLineTool tool appears as shown in the following figure:

LineA and LineB can either be specified directly from within the edit control or accepted as the result of other line-generating vision tools. For example, the following figure shows how an Angle Line Line tool accepts lines generated as output from two Create Line tools:

To include the edit control in your custom vision application, you must first add it to your Visual Studio.NET development environment. See Using Edit Controls in Your Custom Vision Applications for more information.

The following table describes the function of each button:

Table 1. Control buttons

Button	Description	Function
	Run	Measures the angle between the two lines
	Electric mode	Toggles electric mode, where the Angle Line Line tool executes automatically when particular configuration parameters change. In electric mode, a lightning bolt appears next to every electric property.
	Local image display	Opens or closes the local image display window. An Angle Line Line tool supports the following image buffers: The Current.InputImage buffer contains the current image and the two lines, either defined by the Settings tab or defined by another vision tool The LastRun.InputImage buffer contains the results of the Angle Line Line tool after it measures the angle between the two lines
	Floating image display	Opens one or more floating image windows, which support the same image buffers as the local image display window
	Open	Opens a VisionPro persistence (.vpp) file that contains a set of saved properties for this vision tool object type. VisionPro reports an error if you try to open a .vpp file for another object type.
	Save	Saves the current properties of the vision tool to a VisionPro persistence (.vpp) file. The edit control allows you to choose between saving the vision tool with or without its image buffers and tool results.
	Save As	Saves the current properties of the vision tool to a new VisionPro persistence (.vpp) file
	Reset	Resets the vision tool to its default state.
	Show ToolTips	Enables or disables the display of tooltips for individual items in the edit control
	Help	Opens this VisionPro online help file

Use the Settings tab to define LineA and LineB, or use the tab to confirm that the existing lines correspond to the correct input lines generated by another tool. The following figure shows the Settings tab:

The Settings tab offers identical controls for configuring both lines:

Use the Graphics tab to control which graphics the Angle Line Line tool generates and displays. The following figure shows the Graphics tab:

The following table describes the options in the Graphics tab:

Use the Results tab to view the angle between LineA and LineB. The following figure shows the Results tab:

The Results tab has only one feature: