# `GSGetOptimalSplitParameter`

*Function*

## Declaration

```swift
func GSGetOptimalSplitParameter(_ P0: NSPoint, _ P1: NSPoint, _ P2: NSPoint, _ P3: NSPoint) -> CGFloat
```

```objc
CGFloat GSGetOptimalSplitParameter(NSPoint P0, NSPoint P1, NSPoint P2, NSPoint P3);
```

```python
GSGetOptimalSplitParameter(P0: NSPoint, P1: NSPoint, P2: NSPoint, P3: NSPoint) -> float
```

## See Also

### Curve Repair and Combination

- [`GSCombineSegments3`](/Core/GlyphsCore/GSCombineSegments3)
- [`GSCombineSegments3Fit`](/Core/GlyphsCore/GSCombineSegments3Fit)
- [`GSFixDeadCurve`](/Core/GlyphsCore/GSFixDeadCurve)
- [`GSNormalizeCubicHandleRatios`](/Core/GlyphsCore/GSNormalizeCubicHandleRatios)
- [`GSShiftPointAlongLine`](/Core/GlyphsCore/GSShiftPointAlongLine)
- [`GSFixBounds`](/Core/GlyphsCore/GSFixBounds)