Trim/L,to,A
Trim Line to Arc
Trims a line to a arc boundary. Start/End selector specifies which endpoint.
What It Does
The Trim/L,to,A operator trims a line to a arc boundary. The Start/End selector specifies which endpoint of the line to trims.
Trims vs Extend: Trim shortens an entity to reach a boundary. Extend lengthens an entity to a boundary.
Syntax
Trim/L,to,A, LINE, to, ARC, Start|End
Quick Input
LINE: [reference]
ARC: [boundary reference]
End: ● Start ○ End
Direction Selector
| Selector | Meaning |
|---|---|
Start | Trim the start endpoint of the line to the arc |
End | Trim the end endpoint of the line to the arc |
The arc must intersect the line within its sweep angles.
Worked Examples
L0=horizontal (0,0)→(100,0), A0=arc centre(50,0) r=30 0°-180° CCW
Trim/L0, to, A0, End
→ L0: (0,0)→(80,0) [end trimmed to right intersection]
Trim/L0, to, A0, Start
→ L0: (20,0)→(100,0) [start trimmed to left intersection]
Analytic Rule
Find intersection of line and arc.
Move the selected endpoint to the intersection.
The line is shortened to meet the boundary.
Result: Exact analytic trim.
FAQ
What if the line does not intersect the arc?
XyzPilot returns an error. The line must intersect the arc.
What is the difference between Trim and Extend?
Trim shortens an entity to a boundary. Extend lengthens an entity to reach a boundary. Both use the same Start/End selector.