Using CGContext to draw line

Question

I wanted to draw a line using CGContext and what I have so far is:

CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetStrokeColorWithColor(con         


        

Answer 1

These two lines are responsible for the start and end points:

CGContextMoveToPoint(context, 10, 10);    // This sets up the start point
CGContextAddLineToPoint(context, 100, 50); // This moves to the end point.

By adjusting these two x, y points you can adjust the line. The length of the line depends on the start and end points.

Following on from psoft's answer - here's a basic example project of drawing, including creating a path and stroking it.

This is explained in more detail with more sample code in the Quartz 2D guide for paths.