CREATE ARC

 

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.