IOS绘图——贝塞尔曲线

[ios]代码库

#import <UIKit/UIKit.h>

@interface MyView : UIView

@end

#import "MyView.h"
@implementation MyView
- (instancetype)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
    }
    return self;
}

- (void)drawRect:(CGRect)rect {
    
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextMoveToPoint(context, 333, 0);
    CGContextAddCurveToPoint(context, 333, 0, 332, 26, 330, 26);
    CGContextAddCurveToPoint(context, 330, 26, 299, 20, 299, 17);
    CGContextAddLineToPoint(context, 296, 17);
    CGContextAddCurveToPoint(context, 296, 17, 296, 19, 291, 19);
    CGContextAddLineToPoint(context, 250, 19);
    CGContextAddCurveToPoint(context, 250, 19, 241, 24, 238, 19);
    CGContextAddCurveToPoint(context, 236, 20, 234, 24, 227, 24);
    CGContextAddCurveToPoint(context, 220, 24, 217, 19, 216, 19);
    CGContextAddCurveToPoint(context, 214, 20, 211, 22, 207, 20);
    CGContextAddCurveToPoint(context, 207, 20, 187, 20, 182, 21);
    CGContextAddLineToPoint(context, 100, 45);
    CGContextAddLineToPoint(context, 97, 46);
    CGContextAddCurveToPoint(context, 97, 46, 86, 71, 64, 72);
    CGContextAddCurveToPoint(context, 42, 74, 26, 56, 23, 48);
    CGContextAddLineToPoint(context, 9, 47);
    CGContextAddCurveToPoint(context, 9, 47, 0, 31, 0, 0);
    
    CGContextStrokePath(context);
}


@end

[代码运行效果截图]