This function allows the user to generate circular arcs. There are three types:
1. CENTER AND RADIUS
l Define a LCS. See Section 2.5, LOCAL COORDINATE SYSTEM. The center of the arc will be at the origin, and the arc will be in the UV plane of the LCS.
l Enter the values in the ARC PARAMETER dialog window. See Figure 5.1.3.
Figure 5.1.3 Arc Parameters
RAD: Radius of arc
TH1: Beginning angle from U-axis
TH2: Ending angle from U-axis
INC: Angle increment between points (default is 5 degrees) on an arc
2. TANGENT TO 2L
This function allows the user to create an arc that is tangent to 2 lines.
l Select two intersecting lines. See Section 4.5.1, PART/ADD LINE, for more information on selecting lines.
l Enter the radius in the RADIUS OF ARC field.
3. Create by THROUGH 3 PTS
This function allows the user to create an arc through three non-collinear points/nodes.
l Select three points in Figure 5.1.2, and refer to Section 5.1.1. When the third point is selected, the arc and its center will be generated.