title: How can i add arc at CGPathGetCurrentPoint?
body: <p>I am drawing Donut Chart.I am using <code>CGPath</code> to draw and after drawing adding it to <code>CAShapeLayer</code>. First I draw an outer arc and then draw line toward centre, now I want to add arc to my current point. </p>
  
  <p>Screenshot of this is below.</p>
  
  <p><img src="https://i.stack.imgur.com/XsFdF.png" alt="enter image description here"></p>
  
  <p>See smaller arc should be at the end of line. </p>
  
  <p>My code, </p>
  
  <pre><code>for (int j = 0; j &lt; numSubject; j++) {
              int valueForSubject = [datasource valueOfSubjectAtIndex:j andLevel:i inDonutChartView:self];
              endAngle =  [self angleInRadianFromSubjectValue:valueForSubject];
              DLog(@"Angle - %f",RADIANS_TO_DEGREES(endAngle))
              //path
              CGMutablePathRef path = CGPathCreateMutable();
              CGPathAddArc(path, NULL, prevPoint.x, prevPoint.y, radius, startAngle, endAngle, NO);
              CGPoint currentPoint = CGPathGetCurrentPoint(path);
              //find angles from start point to center and end point to center
              CGFloat angle1 = [self angleFromFirstPoint:prevPoint secondPoint:centerPoint];
              CGFloat angle2 = [self angleFromFirstPoint:CGPathGetCurrentPoint(path) secondPoint:centerPoint];
              double endX1 = cos(angle1) * LEVEL_WIDTH + prevPoint.x;
              double endY1 = sin(angle1) * LEVEL_WIDTH + prevPoint.y;
  
              double endX2 = cos(angle2) * LEVEL_WIDTH + CGPathGetCurrentPoint(path).x;
              double endY2 = sin(angle2) * LEVEL_WIDTH + CGPathGetCurrentPoint(path).y;
  
              //first connect current point to end2 point then draw arc and then connect to end1
              CGPathAddLineToPoint(path, NULL, endX2, endY2);
              //CGPathAddArcToPoint(path, NULL, CGPathGetCurrentPoint(path).x, CGPathGetCurrentPoint(path).y, endX2, endY2, radius - LEVEL_WIDTH);
              CGPathAddArc(path, NULL, CGPathGetCurrentPoint(path).x , CGPathGetCurrentPoint(path).y, radius - LEVEL_WIDTH, endAngle, startAngle, YES);
  
              //CGPathAddLineToPoint(path, NULL, endX1, endY1);
  
              //CGPathCloseSubpath(path);
              A3DonutChartShapeLayer* arcLayer = [[A3DonutChartShapeLayer alloc]init];
              arcLayer.path = path;
              //arcLayer.frame = CGPathGetBoundingBox(path);
              arcLayer.lineWidth = BORDER_WIDTH;
              arcLayer.strokeColor = [UIColor blackColor].CGColor;
              arcLayer.fillColor = [UIColor clearColor].CGColor;
              [self.layer addSublayer:arcLayer];
  </code></pre>
  
  <p>Any pointers?</p>