The Track Points
context toolbar
can contain the commands listed below for working with the point types during a track-finding
session. Selecting a named point type to change or remove it activates the applicable commands
for the context. For example, the Remove type command is only displayed
for a named type applied to a T-point, not for a simple T-point.
- Set Start Type
and Set End Type 
- The Find Track command requires start and end point types. You
can specify any T-point of a Track as a start or end type. If a start or end point is not
specified when you click the command, the solver automatically specifies the first or the
last T-point as the start point or end point.
- Start and end points must be in correct sequence. The solver does not find a
collision-free path if the start point does not precede the end point.
- A Track can have only one start point and one end point. A new start or end point
defined on a Track replaces the existing start or end point.
- If a start, end, or intermediate point is in a collision path, the solver is unable to
find a collision-free path.
- A Track is updated with new points as the solver proceeds between start and end points.
Existing points between the start and end points are removed except intermediate points.
The start, end and intermediate point types are kept on T-points.
- Set Intermediate Type
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- You can specify multiple intermediate points before a track-finding session to assist
the computation and to influence the resulting Track.
- Set Guiding Type
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- You can specify multiple guiding points before a track-finding session to assist the
computation.
- Extract
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- The Extract command appears on the context toolbar if the selected start, end, or intermediate point is in collision.
- Click the command to replace that point with a new collision-free point of the same
type. You can choose whether you want to define a maximum radius for the extraction, or
specify a direction for the extraction. The previous point type is removed but the
underlying T-point remains part of the Track.
- If the collision point is a start or intermediate type, the new point is inserted after
its original position. If the collision point is an end type, the replacement is inserted
before its original position.
- The command disappears from the context toolbar when the new point appears.
- In the Path Finder panel, you can specify a parameter to
automatically extract points in collision during the computation.
- Remove Type
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- This command appears on a typed point. With it you can remove a type specified on a
point, without changing the point coordinates or creating another point. The command is
not displayed on the context toolbar if there is no type on a point.
A label identifies each typed point in the 3D representation, showing its type, and its
collision status with a color: red for point in clash, green for collision free, orange for
point in contact. Example point labels appear below.