Feature Description

Auto-split Lines automatically splits both original and newly drawn line objects at intersections during drawing operations, creating multiple line objects.

• The Auto-split Lines feature is applicable to line layers or CAD layers.
• The operation process is illustrated below:

  When drawing lines intersecting with existing features (Figure 1), the comparison between enabled and disabled Auto-split Lines is shown in Figure 2 and Figure 3 respectively.

  Figure 1 Draw Line Feature	Figure 2 Non-auto Split	Figure 3 Auto-split Result

  The original line object (Line 1 in Figure 1) is deleted upon splitting. Newly generated line objects (Lines 3 and 4 in Figure 3) inherit system fields (except SmUserID) with system-assigned values, while retaining non-system fields and SmUserID from the original object. Attributes of newly drawn lines (Lines 5 and 6 in Figure 3) are appended to the attribute table in drawing order.

• When intersecting with complex line objects (multi-part features), the newly drawn line will be split at intersections while the original complex object remains intact but generates new parts. Right-click the object and check its properties in the dialog to verify.
• If newly drawn lines don't intersect any existing features, Auto-split Lines will preserve the drawn object without splitting.

Feature Entry

• Features Tab -> Feature Drawing Group -> Drawing Settings Drop-down Menu -> Auto-split Lines.

Steps

1. In the Features tab's Feature Drawing group, click the Drawing Settings drop-down button and select Auto-split Lines from the menu. Alternatively, use the Shift+K shortcut to enable this feature. Click again to disable.
2. Draw a line object in the current editable layer. Upon completion, both new and intersected original objects will be automatically split into multiple objects at intersection points.