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Circle

The Circle tool is used to draw complete circles. Partial circles can be drawn using the Arc tool. Circles can be defined three ways (see Construct below).

The options described below can be found in the bottom app bar or in the control panel.

The Layer option selects the layer on which new objects are created. Selecting a layer also selects the default color, line type, and line thickness used to draw the object. These properties can be overridden using the Properties tool. Layers are also used to logically group objects within the drawing. Layers can be created, modified, and hidden in the Layer definitions settings panel.
The Construct option determines how the points that you enter are used to define the object being created. In this case there are three ways that you can define a circle:
Two point
The circle is defined by locating its center point, followed by any point on its circumference.
Three point
The circle is defined by locating any three points on the circumference of the circle.
Radius
The circle is defined by locating its center point and entering a value for its radius. When this option is selected the Radius option described below is enabled.
The Fill option specifies the color (if any) that will be used to fill the object. The following options are available.
No fill
The object is not filled
Use layer color
The object is filled using the color property of the object's layer
Use outline color
The object is filled using the color of the object's outline
Select a new color
An explicit color is selected for the fill using the Color Picker
[Recent colors...]
Choose from a list of colors that were recently selected in the Color Picker
The Radius option allows you to specify an explicit radius for new circles. The radius value is specified in model (real world) units when working in a scaled drawing. This option is only available when the Radius construction option is selected.
The Edit Last option gives you an opportunity to modify the points used to define the last object created without leaving the current tool. This can be especially useful when using touch input because touch is an inherently imprecise way to locate points. You can use the arrow keys on the keyboard or control panel to fine-tune the location of each point. When you finish editing the object (by deselecting it) you will return to the current tool.