CST2013: Create an Arc

Modeling: CurvesCurvesArc

In this dialog box you may specify the dimensions of an arc either numerically or by using expressions. The construction will always be performed in the currently active coordinate system.

Each arc will be assigned to a curve.

Within its curve each item is identified by a unique name. The curve item can be addressed by this name for subsequent editing operations.

As soon as the curve item is defined it will appear in the main plot window and on the navigation tree.

The picture below shows two arcs defined in global coordinates:

Name

Specify the unique name for the arc.

Xcenter, Ycenter

Specify valid expressions for the center of the arc in global coordinates. Please note that these entries only appear when the global coordinate system is currently active.

Ucenter, Vcenter

Specify valid expressions for the center of the arc in local coordinates. Please note that these entries only appear when a local coordinate system is currently active.

X1, Y1

Specify valid expressions for the start point of the arc in global coordinates. This point also defines the radius of the arc. Please note that these entries only appear when the global coordinate system is currently active.

U1, V1

Specify valid expressions for the start point of the arc in local coordinates. This point also defines the radius of the arc. Please note that these entries only appear when a local coordinate system is currently active.

X2, Y2

Specify valid expressions for the end point of the arc in global coordinates.  This point will be projected to the circle, because the radius is already defined by point (X1, Y1). Please note that these entries only appear when the global coordinate system is currently active.

U2, V2

Specify valid expressions for the end point of the arc in local coordinates. This point will be projected to the circle, because the radius is already defined by point (U1, V1). Please note that these entries only appear when a local coordinate system is currently active.

Edit angle

If this box is checked, you may specify a valid expression for the inner angle of the arc. The values of  X2,Y2 (U2,V2) won't be changed and are not used unless you uncheck the checkbox.

Segments

Specify a valid integer expression for the segmentation of the arc.

Curve

Select the curve to which this arc item will be assigned from the list of previously defined curves or enter a new name.

OK

Press this button to finally create the arc.

Preview

Press this button to create a preview image of the arc. This option is very useful to check the settings before you actually create the arc.

Cancel

Closes this dialog box without performing any further action.

Help

Shows this help text.