How to draw a triangle with QUARTZ 2D?

此生再无相见时 提交于 2019-12-04 19:09:14

If you want to draw a path with transparent fill - then you don't need to fill it - just stroke it when draw, so it seems that your CGContextFillPath method is redundant - remove it:

CGContextMoveToPoint(ctx, position.X, position.Y - (size.height / 2));
CGContextAddLineToPoint(ctx, position.X - (size.width / 2), position.Y + (size.height / 2));
CGContextAddLineToPoint(ctx, position.X + (size.width / 2), position.Y + (size.height / 2));
CGContextSetLineWidth(ctx, 1.0);
CGContextStrokePath(ctx);
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