Subtraction of objects is a helpful tool to create complex furniture. Similar to room elements subtracting areas from a room, you can subtract one or more objects from one other object. Objects can be standard elements, extrusion volumes, furniture or imported SAT objects. The resulting object is what remains after the one object is subtracted from all other objects. The following example shows a polygonal extrusion volume with a cone sticking in it. The cone will create a depression in the volume. To achieve that, both objects are selected and the command “Subtract furniture” is executed. “Subtract furniture” can be found in menu “Edit” or in the context menu that is displayed after right clicking the selected objects. The command shows a Property Page, in which you can select the one object; all other objects are subtracted from. Pressing button “Subtract” executes the command. The CAD window afterwards displays what is left of the extrusion volume.
Fig. 117 Subtractions from a volume
If the cone goes completely through the extrusion volume, a hole is created. If the newly created furniture is split, all objects, even those which have been subtracted, are restored.
