Quite unique are the unfolded projections of 3D objects that form·Z is capable of deriving from any form, including shapes that contain holes. The pattern in which an object will be unfolded can be controlled by clicking on the segment where the unfolding will start. That is, for most objects, different unfolded patterns will be derived if you click on different segments to select the object. The unfolded pattern can also be regulated by breaking an object into parts before unfolding it.

Three solid objects unfolded.

Among a variety of other applications, the unfold operation offers an effective method for constructing physical cardboard models, or for manufacturing sheet metal objects. To facilitate such constructions, the unfolded patterns may optionally include connectors for reassembling the surfaces of the original object.

Left to right : A cuboid, unfolded with connectors. Refolding the cube with and without connectors.

Smooth developable surfaces can also be unfolded. Developable or ruled surfaces are those that can be generated by sweeping a single straight line. Examples follow.

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