CODEWITHSUNDEEP
objective-cmacoscocoacore-graphics
Master Stroke
Master Stroke

Reputation: 5128

Drawing Quad Curve in OS X App

I can draw the quad curve using UIBezierPath's method addQuadCurveToPointin iOS, but unable to find the same method in NSBezierPath.

I can see only below methods in NSBezierPath class,

- moveToPoint:(NSPoint)point;
- lineToPoint:(NSPoint)point;
- curveToPoint:(NSPoint)endPoint
       controlPoint1:(NSPoint)controlPoint1
       controlPoint2:(NSPoint)controlPoint2;
- closePath;

Is there a way to draw the quad curve in OS X environment?

Upvotes: 3

Views: 488

Answers (1)

black_pearl
black_pearl

Reputation: 2699

call path.addQuadCurve(to: endPoint, controlPoint: controlPoint), with code below

extension NSBezierPath{   
    func addQuadCurve(to endPoint: CGPoint, controlPoint: CGPoint){
        let startPoint = self.currentPoint
        let controlPoint1 = CGPoint(x: (startPoint.x + (controlPoint.x - startPoint.x) * 2.0/3.0), y: (startPoint.y + (controlPoint.y - startPoint.y) * 2.0/3.0))
        let controlPoint2 = CGPoint(x: (endPoint.x + (controlPoint.x - endPoint.x) * 2.0/3.0), y: (endPoint.y + (controlPoint.y - endPoint.y) * 2.0/3.0))
        curve(to: endPoint, controlPoint1: controlPoint1, controlPoint2: controlPoint2)
    }
}

Thanks to Rhythmic Fistman

Upvotes: 6

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