# `GSPenProtocol qCurveWithPoints:count:`

*Instance Method*

Draw a whole string of quadratic curve segments.

## Declaration

```swift
func quadraticCurve(points: UnsafePointer<NSPoint>!, count: UInt)
```

```objc
- (void) qCurveWithPoints:(const NSPoint *) points count:(NSUInteger) count;
```

```python
qCurveWithPoints_count_(points: NSPoint, count: int)
```

## Parameters

- `points` — A sequence of zero or more off-curve points followed by a single on-curve point.
- `count` — The total number of points in `points`. A count of `0` is invalid.

## Discussion

The last point specified is on-curve, all others are off-curve points. When the last point has an X coordinate of `NSNotFound`, then there is no on-curve end point. Instead, the implied on-curve point is placed half-way between the last and first off-curve point.

If no off-curve points are given, performs a line-to operation to the on-curve point.