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The fragment must have at least 1 tie point and can optionally have 2. If a 2nd tie point is specified the fragment will be stretched either horizontally, vertically or both.
Tie Point Type
The tie point can be any on of the following:
Centerline – The centerline or template attachment point. This type of tie is not recommended for portable components.
Outside – The outer most point (furthest from CL) among the set of already processed fragments. Only fragments which are in the Merged Surface are considered. This type of tie is not recommended for portable components since the tie point position is dependent on other components.
Template point code – A coded point. Note the point must have already been processed. If the tie point doesn’t exist the fragment will be skipped.
Component attachment point – The fragment is attached to the parent components attachment point.
End of last surface fragment (successfully processed) - The fragment is attached to the end of the last fragment (or component attachment point if it is the first fragment). Note the fragment is always created.
Start of last surface fragment (successfully processed) - The fragment is attached to the start of the last fragment (or component attachment point if it is the first fragment). Note the fragment is always created.
First Fragment in the component. - The fragment is attached to the first fragment in the component.
End of previous fragment (if it exists). The fragment is attached to the end of the previous fragment only if it exists. This differs from “End of the last surface fragment” in that; if the previous fragment doesn’t exist this fragment will be skipped also.
Start of previous fragment (if it exsts). The fragment is attached to the start of the previous fragment only if it exists. This differs from “Start of the last surface fragment” in that; if the previous fragment doesn’t exist this fragment will be skipped also.
Outside of component and match surface. The fragment is attached to the furthest point in the component from centerline on the same fragment surface (material surface eg. SG). All fragments are considered including fragments not in the Merged Surface and Non-Volume Fragments.
Tie Point Offsets
Vertical and horizontal offsets can be specified for a tie point. These offsets can also be parameters.
Fragment Stretching Using a Second Tie Point
If a second tie point is specified, the fragment is stretched (adjusted) horizontally, vertically or both.
Legs in the fragment can be flagged to be included or excluded from the adjustment (see Leg flag Adjust if parent surface has multiple ties ).
If the stretch is horizontal or vertical only, the slopes of the legs are preserved and the length is adjusted.
For vertical stretching the leg slope direction is determined as follows:
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