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我试图为 MapView 的覆盖视图描边并填充路径。现在填充工作，笔画不...从下面的代码看有什么想法吗？

- (void)drawMapRect:(MKMapRect)mapRect
          zoomScale:(MKZoomScale)zoomScale
          inContext:(CGContextRef)ctx
{    
    CGContextSetRGBStrokeColor(ctx, 1.0, 0.0, 0.0, 0.8);
    CGContextSetRGBFillColor(ctx, 0.0, 0.0, 0.8, 0.4);

    CGContextSetLineCap(ctx, kCGLineCapRound);
    CGContextSetLineWidth(ctx, 8.0);

    CGPoint pt;
    pt = [self pointForMapPoint:MKMapPointForCoordinate(CLLocationCoordinate2DMake(0, 0))];
    CGContextMoveToPoint(ctx, pt.x, pt.y);

    pt = [self pointForMapPoint:MKMapPointForCoordinate(CLLocationCoordinate2DMake(-2, 3))];
    CGContextAddLineToPoint(ctx, pt.x, pt.y);

    pt = [self pointForMapPoint:MKMapPointForCoordinate(CLLocationCoordinate2DMake(-2, 5))];
    CGContextAddLineToPoint(ctx, pt.x, pt.y);

    pt = [self pointForMapPoint:MKMapPointForCoordinate(CLLocationCoordinate2DMake(-4, 4))];
    CGContextAddLineToPoint(ctx, pt.x, pt.y);

    CGContextDrawPath(ctx, kCGPathFillStroke);
}
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1 回答 1

1

这使它工作...

CGContextSetLineWidth(ctx, 1 * MKRoadWidthAtZoomScale(zoomScale));
于 2012-09-15T16:56:33.280 回答