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A body is a collection of lumps that have a common transform. It is the highest level entity in an
ACIS model, and can own lumps or wires. See also lump,
edge,
shell,
face,
wire.
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A
wire body contains no faces, shells, or lumps. The minimal case of a wire body consists of a wire record, coedge, and edge with null geometry whose start and end are a single vertex with a point.
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A
sheet body is an infinitely thin body, with faces that never totally enclose a volume. This means that it is possible to "visit" both sides of all faces without passing through any face. Every edge of the model bounds at least one face. There are no free or dangling edges.
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A
solid body totally encloses a volume. It is not possible to "visit" both sides of any face without first passing through a face. Every boundary of every face is used twice, except in the cases of the analytic sphere and torus, which are closed and require no further topology to bound a volume. A solid body has no dangling faces or dangling edges. A single-sided face body is considered a solid body.
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