Page 45 - CS6_ID_Look_Inside
P. 45

Understanding Anchor Points and Handles

                        An anchor point marks the end of a line segment, and the point handles determine the shape of that segment. That’s the
                     INDESIGN FOUNDATIONS  tool, or you can edit the curves that are created as part of another shape (such as a circle).  Point B
                        basic definition of a vector, but there is a bit more to it than that. You can draw Bézier shapes from scratch using the Pen

                        Each segment in a path has two anchor points and
                        two associated handles. We first clicked to create
                                                                  Point A
                        Point A and dragged (without releasing the mouse
                                                                                                     Handle B1
                        button) to create Handle A1. We then clicked and
                                                                Handle A1
                        dragged to create Point B and Handle B1; Handle
                                                                                                     Handle B2
                        B2 was automatically created as a reflection of B1
                        (Point B is a symmetrical point).
                        This image shows the result of dragging Handle B1   Segment A
                                                                  Point A
                        to the left instead of to the right when creating the
                        initial curve. Notice the difference in the curve here,   Handle A1          Handle B2
                        compared to the curve above. When you drag the
                        handle, the connecting segment arcs away from the   Segment A                Point B
                        direction of the handle you drag.
                                                                                                     Handle B1

                        It’s important to understand that every line
                        segment is connected to two handles. In this                                      Handle B2
                        example, Handle A1 and Handle B2 determine    Handle A1
                        the shape of Segment A. Dragging either handle                                    Point B
                        affects the shape of the connected segment.   Segment A
                                                                                                          Handle B1


                        Clicking and dragging a point creates a symmetrical
                        (smooth) point; both handles start out at equal
                        length, directly opposite one another. Changing the
                        angle of one handle of a symmetrical point also   Point A              Handle B2
                        changes the opposing handle of that point. In the
                        example here, repositioning Handle B1 also moves   Handle A1           Point B
                        Handle B2, which affects the shape of Segment A.
                        (You can, however, change the length of one handle   Segment A         Handle B1
                        without affecting the length of the other handle.)


                        You can create corner points by simply clicking
                        with the Pen tool instead of clicking and dragging.              Handle of other connected point
                        Corner points do not have their own handles; the                 controls the segment shape.
                        connected segments are controlled by the handles
                        of the other associated points.                                  Corner point has no handles.




                        You can convert a smooth point into a corner point               Option/Alt-click this point with
                        by clicking the point with the Convert Direction                 the Convert Direction Point tool
                        Point tool [  ] (nested under the Pen tool). You                 and drag to create only one handle.
                        can also add a handle to only one side of an
                        anchor point by Option/Alt-clicking a point with the             This handle controls the
                        Convert Direction Point tool and dragging.                       connected segment; the handle
                                                                                         is not reflected on the other
                                                                                         side of the point.





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