https://github.com/DeveloperLx/LxThroughPointsBezier

A funny iOS library. Draw a smooth bezier through several points you designated. The curve‘s bend level is adjustable.
https://github.com/DeveloperLx/LxThroughPointsBezier

Last synced: 13 days ago
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A funny iOS library. Draw a smooth bezier through several points you designated. The curve‘s bend level is adjustable.

• Host: GitHub
• URL: https://github.com/DeveloperLx/LxThroughPointsBezier
• Owner: DeveloperLx
• License: apache-2.0
• Created: 2015-01-16T14:44:21.000Z (almost 10 years ago)
• Default Branch: master
• Last Pushed: 2015-11-29T15:05:22.000Z (almost 9 years ago)
• Last Synced: 2024-10-05T01:02:42.349Z (about 1 month ago)
• Language: Objective-C
• Homepage:
• Size: 655 KB
• Stars: 392
• Watchers: 15
• Forks: 43
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# LxThroughPointsBezier

    Draw a smooth bezier through several points you designated. The curve‘s bend level is adjustable.

Installation

------------

    You only need drag UIBezierPath+LxThroughPointsBezier.h and UIBezierPath+LxThroughPointsBezier.m to your project.

Podfile

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    pod 'LxThroughPointsBezier', '~> 1.0.0'

Support

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    Minimum support iOS version: iOS 5.0

How to use

-----------

```objc

    #import "UIBezierPath+LxThroughPointsBezier.h"

    CGPoint point1 = CGPointMake(30, 180);

    CGPoint point2 = CGPointMake(90, 120);

    CGPoint point3 = CGPointMake(120, 200);

    CGPoint point4 = CGPointMake(160, 240);

    CGPoint point5 = CGPointMake(210, 160);

    CGPoint point6 = CGPointMake(240, 300);

    CGPoint point7 = CGPointMake(290, 140);

    

    NSValue * point1Value = [NSValue valueWithCGPoint:point1];

    NSValue * point2Value = [NSValue valueWithCGPoint:point2];

    NSValue * point3Value = [NSValue valueWithCGPoint:point3];

    NSValue * point4Value = [NSValue valueWithCGPoint:point4];

    NSValue * point5Value = [NSValue valueWithCGPoint:point5];

    NSValue * point6Value = [NSValue valueWithCGPoint:point6];

    NSValue * point7Value = [NSValue valueWithCGPoint:point7];

    

    _pointArray = [NSMutableArray array];

    [_pointArray addObjectsFromArray:@[point1Value, point2Value, point3Value, point4Value, point5Value, point6Value, point7Value]];

    

    _curve = [UIBezierPath bezierPath];

    _curve.contractionFactor = 0.6;

    [_curve moveToPoint:point1];

    [_curve addBezierThroughPoints:_pointArray];

    

    _shapeLayer = [CAShapeLayer layer];

    _shapeLayer.strokeColor = [UIColor blueColor].CGColor;

    _shapeLayer.fillColor = nil;

    _shapeLayer.lineWidth = 3;

    _shapeLayer.path = _curve.CGPath;

    [_view.layer addSublayer:_shapeLayer];

```

Effect

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*	![demo](demo.gif)

Be careful            

-----------

    The good bend level is about 0.6 ~ 0.8. The default and recommended value is 0.7.

    You must wrap CGPoint struct to NSValue object, and give at least 1 point for drawing the curve.

License

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    LxThroughPointsBezier is available under the Apache License 2.0. See the LICENSE file for more info.