iOS-贝塞尔连续曲线

一个曲线

UIColor *color = [UIColor redColor];
    [color set];
    UIBezierPath *path = [UIBezierPath bezierPath];
    ///线的宽度【粗细】
    path.lineWidth = 5;
    ///端点类型
    path.lineCapStyle = kCGLineCapRound;
    ///衔接类型
    path.lineJoinStyle = kCGLineJoinRound;
    ///起点
    [path moveToPoint:CGPointMake(0, 100)];
    [path addCurveToPoint:CGPointMake(200, 100) controlPoint1:CGPointMake(50, 0) controlPoint2:CGPointMake(150, 200)];
    [path stroke];

图例：

多个曲线

/**
 贝塞尔曲线
 CGRect
*/  
- (void)draweBezierCurves:(CGRect)rect{
    ///曲线水平位置y坐标
    CGFloat lintY = rect.origin.y;
    ///每个曲线的水平长度【两个弧度为一个曲线】
    NSInteger lineWidth = 8;
    ///每个曲线的上下顶点与水平位置 距离
    CGFloat lingPeak = 3;
    ///波浪线个数
    NSInteger lineCount = (int)(rect.size.width / lineWidth);
    ///除了整数外，最后一条线的长度【小于 lineWidth】
    CGFloat lastLineWidth = rect.size.width - lineCount*lineWidth;
    ///贝塞尔
    UIBezierPath *path = [UIBezierPath bezierPath];
    ///线的宽度【粗细】
    path.lineWidth = 1;
    ///端点类型
    path.lineCapStyle = kCGLineCapRound;
    ///衔接类型
    path.lineJoinStyle = kCGLineJoinRound;
    ///颜色
    UIColor *color = [UIColor redColor];
    
    [color set];
    for (int i = 0; i < lineCount; i ++) {
        ///起点
        [path moveToPoint:CGPointMake(rect.origin.x + i*lineWidth, lintY)];
        ///三点成线
        [path addCurveToPoint:CGPointMake(rect.origin.x + i*lineWidth + lineWidth, lintY) controlPoint1:CGPointMake(rect.origin.x + i*lineWidth + lineWidth/4, lintY - lingPeak) controlPoint2:CGPointMake(rect.origin.x + i*lineWidth + (lineWidth/4)*3, lintY + lingPeak)];
    }
    
    if (lastLineWidth > 0) {
        ///起点
        [path moveToPoint:CGPointMake(rect.origin.x + lineCount*lineWidth, lintY)];
        ///三点成线
        [path addCurveToPoint:CGPointMake(rect.origin.x + lineCount*lineWidth + lastLineWidth, lintY) controlPoint1:CGPointMake(rect.origin.x + lineCount*lineWidth + lastLineWidth/4, lintY - lingPeak) controlPoint2:CGPointMake(rect.origin.x + lineCount*lineWidth + (lastLineWidth/4)*3, lintY + lingPeak)];
        
    }
    [path stroke];
}

图例：