UIBezierPath 贝尔曲线

最新推荐文章于 2023-03-06 12:12:00 发布

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#ios #UIBezierPath

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本文介绍了如何使用iOS开发中的UIView类别方法来绘制实线和虚线。通过UIBezierPath创建路径并设置CAShapeLayer的相关属性，实现了指定颜色、宽度及虚线模式的线条绘制。

画实线

@implementation UIView (Drawing)

-(CAShapeLayer *)drawLineFromPoint:(CGPoint)p1 toPoint:(CGPoint)p2 width:(CGFloat)width color:(UIColor *)color
{
    UIBezierPath *path = [UIBezierPath bezierPath];
    [path moveToPoint:p1];
    [path addLineToPoint:p2];
    
    CAShapeLayer *layer = [CAShapeLayer layer];
    layer.lineWidth = width;
    layer.strokeColor = color.CGColor;
    layer.path = path.CGPath;
    
    [self.layer addSublayer:layer];
    
    return layer;
}

画虚线

- (CAShapeLayer*)dashLineFromPoint:(CGPoint)p1 toPoint:(CGPoint)p2 realLinePoint:(CGFloat)realLinePoint dashLinePoint:(CGFloat)dashLinePoint color:(UIColor*)color lineWidth:(CGFloat)lineWidth
{
    //realLinePoint 单位实线长度  dashLinePoint 单位间隙长度
    CAShapeLayer *layer = [self drawLineFromPoint:p1 toPoint:p2 width:lineWidth color:color];
    layer.lineDashPattern = @[[NSNumber numberWithInteger:realLinePoint],[NSNumber numberWithInteger:dashLinePoint]];

    return layer;
    
}