How to calculate arc geometry for PCB tracks using Python in KiCad?
Calculating arc geometry for PCB tracks in KiCad can be achieved using Python scripting. The script provided includes a method for calculating the midpoint of an arc track, crucial for defining its shape:

```python
import pcbnew
import math
from pcbnew import wxPoint, wxPointMM

def add_track_arc(start, mid, end, layer=pcbnew.F_Cu):
    board = pcbnew.GetBoard()
    track = pcbnew.PCB_ARC(board)
    track.SetStart(start)
    track.SetMid(mid)
    track.SetEnd(end)
    track.SetWidth(int(0.25 * 1e6))
    track.SetLayer(layer)
    board.Add(track)

# Script to calculate and add arc geometry
# ... (rest of the script with calculations for start, mid, and end points)
add_track_arc(start1, mid, end1)

pcbnew.Refresh()
```

This method is useful for designing PCBs with specific track geometries, such as arcs, where precise control over the track shape is required for functionality or aesthetic purposes.