The reshape path segment workflows have been enhanced to support reshaping with touch input on touch-based devices.
In earlier releases of Illustrator, curved path segments could be reshaped using the Direct Selection tool, but their handles were always constrained to their original angles. Now, the reshaping of segments is unconstrained. Also, converting straight segments to curved paths is now possible by simply dragging the segment itself. There are three ways to reshape path segments.
A. Original shape B. The Reshape Segment cursor indicates a reshape-ready segment C. When the Reshape Segment cursor is visible, modify the shape of the segment by clicking and dragging. D. Reshape as many segments as required E. Final shape when reshaping tasks are complete
Using the Direct Selection tool on a straight segment moves the segment. However, when used on a curved segment, reshaping is unconstrained, similar to the Convert Anchor point tool or Pen tool.