The subtract filter subtracts one input slice stack (subtrahend) from another input slice stack (minuend). The types of input are marked on their connection lines: + for minuend, – for subtrahend. The input stacks can be swapped using the Switch input for Subtract option in the context menu.
The input stacks should be free of self-intersections, otherwise the slices are joined according the positive fill rules. The output consists of closed contours which are not self-intersecting. Any hatching in the input data is ignored.
| Parameter | Default Value | Description |
|---|---|---|
| offsetx | 0.0 | X translation of an input slice stack |
| offsety | 0.0 | Y translation of an input slice stack |
| offsetz | 0.0 | Z translation of an input slice stack |
XML Configuration example code:
<subtract name="half_sphere"> <minuend entry="sphere1" /> <subtrahend entry="sphere2" offsetx="5" offsety="6" offsetz="1.0" /> </subtract>