Hewlett-packard Development Company, L.p.

Josh Shepherd

Matthew Allen Shepherd

Scott A White

Brent Ewald

Sergio Gonzalez

In an example, a method includes receiving, at a processor, a data comprising a model of an object to be generated in additive manufacturing. The data comprises object model data representing an object model as a plurality of initial polygons and object property data associated with the initial polygons. The method may comprise generating a representation of a slice of the object model defined between two planes and generating a plurality of polygons to represent the slice of the object model. A mapping between the object property data and the generated plurality of polygons may also be generated.

Generating object model slices

In an example, a method includes acquiring, at a processor, a data model of an object to be generated in additive manufacturing, the data model comprising object model data representing a slice of the object model as a plurality of polygons and object property data comprising property data associated with the plurality of polygons. The slice may be inspected from a predetermined perspective at a plurality of discrete locations. It may be determined if each location is within a face of a polygon, and if so, the object property data associated with that polygon may be identified and associated with that location. The slice may further be inspected at a plurality of discrete locations along an edge of a polygon, the object property data associated with each location may be identified and associated with that location.

Associating object property data with locations

One example of a method includes receiving a three-dimensional (3D) model of an object to be 3D printed and voxelizing the 3D model to define a plurality of voxel layers. Each voxel layer defines a plurality of voxel rows including an initial voxel row. The method includes for each voxel layer: exclusively oring (XORing) a key voxel row with the Initial voxel row to provide an initial delta row; and for each voxel row from the voxel row following the initial voxel row to a further voxel row of the plurality of voxel rows, XORing each voxel row with the previous voxel row to provide a delta row for each voxel row.

XOR processing of voxels of three-dimensional models

In an example, a method includes acquiring, at a processor, object model data for an object to be generated in additive manufacturing, the object model data representing the object as a plurality of polygons. A virtual object space enclosing the object may be inspected from a plurality of discrete source points in a plane. For each of a plurality of distances from each source point, it may be determined if a polygon face is encountered, and if so, a counter may be set based on whether the polygon face is oriented towards the source point or away from the source point. Based on a content of the counter, it may be determined if a volume enclosed between two distances from a source point is a volume of the object.

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Vancouver, WA, United States of America

Josh Shepherd