Circular Arc

This tool enables you to specify a circle by first placing its center point, and then clicking to indicate a point that lies on the curve.

Access this tool from the Keypoint Curve Toolbox:

Circle Options

Segments

Specifies the number of segments you want to create in the circle. After creating the segments, open the information window to edit the attribute values for each segment.

Degree

Specifies the degree of the curve. The values range from 2 to 7. The default is 6.

Spans

Specifies the number of spans in the curve. The values range from 1 to 14. The default is 1.

Note: The sum of the degree and number of spans cannot exceed 16. When creating rational geometry, as set in Preferences > Construction Options, the Spans option is not available.

Keypoint circle workflows

Draw a keypoint circle

  1. Click the Circular Arc tool .

  2. Click the center point of the circle, or type a 3D coordinate to place the point exactly.

  3. Click a point that lie on the circle, or type a 3D coordinate to place the point exactly.

    If you hold down the mouse as you click, you can drag the point, and see the radius of the circle update in current linear units.

  4. (optional) If you created segments with the circle, set the attributes for each segment by doing the following:

    • Use the Pick Components tool to pick the curve segments.

    • Open the information window ( Windows > Information > Information Window).

    • For each circle segment, open the Attributes section and modify the desired segment values.

Parent page: Keypoint Curve Toolbox