Page 279 - Chief Architect Reference Manual

Union, Intersection, and Subtract

were retained, it is superimposed over There is one method for using the Polyline
them and can be moved.
Subtract edit button.
To use the group selection method
To use the Subtract edit tool
1. Group select two or more closed poly- 1. Draw two or more closed polyline-based
lines or solid objects. objects or solids that overlap. One object

2. Click the Polyline Intersection edit can be completely enclosed by another.
button. 2. Select one or more of these objects that
3. If the object is a polyline, choose to you want to remove a portion from as
retain or delete the original objects in the defined by the area shared in common
dialog that opens. with the remaining, unselected object.
4. A new object of the same type as the 3. Click the Polyline Subtract edit
originals is created, is selected, and is button and then click the unselected
superimposed over the originals if they object.
were retained.
4. If the object is a polyline, choose to
retain or delete the original objects in the
Subtract dialog that opens.
Use the Polyline Subtract edit button 5. A new object of the same type as the
to subtract the area of one object that originals is created, is selected, and is
overlaps another object of the same type to superimposed over the originals if they
create a third, new object. were retained.
This polyline
selected first Note: If the original objects do not overlap, the
Subtract edit tool duplicates the first object
selected and then either deletes or retains it.

This polyline
selected first
Originals

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