Feature Description

Auto-cut Polygons automatically splits newly drawn polygon objects when they intersect existing features, generating new object(s). The result may be either a single polygon or a complex polygon object.

• This feature applies to polygon layers or CAD layers.
• If a newly drawn object intersects existing features, the overlapping portion will be automatically trimmed, producing a new object.
• No splitting occurs if the new object doesn't intersect any existing features.
• When a new polygon crosses existing features, it generates a complex polygon containing multiple sub-objects. As shown below, a newly drawn rectangle (dashed line) intersecting a filled rectangle produces a complex object with two sub-objects.

Feature Entry

• Features tab -> Feature Drawing group -> Drawing Settings drop-down menu -> Auto-cut Polygons.

Steps

Figure 1 Drawing a Rectangle

Figure 2 Splitting the Drawn Rectangle

Figure 3 Splitting Result

1. Enable the feature: In Features tab's Feature Drawing group, click Drawing Settings drop-down button and select Auto-cut Polygons, or use Shift+R shortcut. Click again to disable.
2. Draw a polygon in the current editable layer. Figure 1 shows a dashed rectangle being drawn.
3. When the new rectangle intersects two existing rectangles, it gets split as shown in Figure 2.
4. Move the resulting object as shown in Figure 3.
5. To disable this feature, uncheck Auto-cut Polygons.