Re: How can I be so wrong about graphics?
Re: How can I be so wrong about graphics?
- Subject: Re: How can I be so wrong about graphics?
- From: Development <email@hidden>
- Date: Mon, 06 Jun 2011 14:51:47 -0700
Hmm... it looks like it does draw the line... way off in the ether somewhere...
I think I drew in the global coord system not the local to the view
On Jun 6, 2011, at 2:37 PM, David Duncan wrote:
> On Jun 6, 2011, at 2:31 PM, Development wrote:
>
>> I'm really loosing faith in my ability to read simple english
>>
>>
>> According to like a million examples... If I place the follow bit of code in a view's drawRect: method I should get a line from pointA to pointB however I get nothing.
>> How can subclassing UIView be this difficult? I have turned off clips to bounds, set the stroke color to black and done basically everything I know to do but I get an empty path
>>
>>
>> CGContextRef context = UIGraphicsGetCurrentContext();
>>
>> CGContextSetStrokeColorWithColor(context, self.strokeColor.CGColor);
>> CGContextBeginPath(context);//According to most examples this is a waste of code
>>
>> // Draw them with a 2.0 stroke width so they are a bit more visible.
>> CGContextSetLineWidth(context, 2.0);
>>
>> CGContextMoveToPoint(context, pointA.x,pointA.y); //start at this point
>>
>> CGContextAddLineToPoint(context,pointB.x, pointB.y); //draw to this point
>>
>> // and now draw the Path!
>> CGContextStrokePath(context);
>
>
> What is pointA & pointB? What is self.strokeColor? Assuming this is happening within -drawRect:, it should work just fine.
> --
> David Duncan
>
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