### Control Points Tab

Note: The Control Points tab only appears if you use an analog probe head that allows continuous contact scanning .

The Control Points tab allows you to add control points to your scan. Control points interrupt the normal scan functions and allow you to define specific locations on the scan which alter the scan speed, point density or both. Good continuous scans often require different scan speeds and/or point densities for different parts of the scan.

The ability to add control points has been added to these types of scans:

- Linear Open

- Linear Closed

- Patch

- Section

- Line (Basic Scan)

The Control Points tab contains the Control Points Definition area. This area lets you define each control point. It contains these items:

Item | Description
Type list | This defines the type of control point. Available types include:

1. Plane
   PLANE, X, Y, Z, I, J, K, Num Crossings, Scan Speed, Point Density

2. Sphere
   SPHERE, X, Y, Z, I, J, K, Num Crossings, Scan Speed, Point Density, Diameter

3. Cone
   CONE, X, Y, Z, I, J, K, Num Crossings, Scan Speed, Point Density, Angle

4. Cylinder
   CYLINDER, X, Y, Z, I, J, K, Num Crossings, Scan Speed, Point Density, Diameter

These types are similar to the boundary points.

Number of Crossings box | This box defines the number of times the probe must cross the interrupt boundary before adjusting the specified parameters.
Diameter box | This box defines the diameter of the Cylinder or Sphere control point.
Angle box | This box defines the half angle of the Cone control point.
Point Density box | This box defines the density of the points that are read into the scan data during a continuous contact scan. This is listed as number of points per mm.
Speed box | This box defines the speed of the machine while it traverses the part surface performing scans.
From Manual Hit check box | If you select this check box, you can define the control point's XYZ and IJK location by manually taking a hit with the probe (or by clicking on the part if working in off-line mode).
XYZ boxes | These boxes define the XYZ location of the control point.
IJK boxes | These boxes define the IJK vector of the control point.
Add button | Adds a new, undefined control point.
Delete button | Deletes the current control point.
Next button | Goes to the next control point. The boxes in the area change to show the new point's data.
Prev button | Goes to the previous control point. The boxes in the area change to show the new point's data.
Delete All button | Deletes all the control points in the scan.
Update button | Updates all the control points in the scan with the setting for the current control point.

More:

Adding and Using Control Points

Scanning after Adding Control Points