About
direction lines and direction points
When you select an anchor point that connects
curved segments (or select the segment itself), the anchor points of the
connecting segments display direction handles, which consist of direction lines that end in direction point. The angle and
length of the direction lines determine the shape and size of the curved
segments. Moving the direction points reshapes the curves. Direction lines
don’t appear in the final output.
A smooth point always has two direction lines,
which move together as a single, straight unit. When you move a direction line
on a smooth point, the curved segments on both sides of the point are adjusted
simultaneously, maintaining a continuous curve at that anchor point.
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