Generating slicing data from a tree data structure

A non-transitory machine-readable medium storing instructions to generate slice data from a tree data structure, the instructions executable by a machine to cause the machine to:

• obtain at least one shape specification of the 3-D object;
• obtain at least one material specification of the 3-D object;
• merge the at least one shape specification and the at least one material specification to create an octree representation of the 3-D object;
• merge neighboring homogenous nodes from the octree to clip the octree;
• and
• generate slice data from the octree.

A system to generate slice data from a tree data structure, comprising:

• a specification engine to:
• obtain a plurality of shape specifications of the 3-D object;
• obtain a plurality of material specification of the 3-D object;
• a merge engine to merge the plurality of shape specifications and the plurality of material specifications to create an octree representation of the 3-D object;
• a scale engine to scale the octree to a resolution associated with a 3-D printer;
• and
• a slice engine to provide slice data from the octree to the 3-D printer.