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| ON_SubDHash ()=default |
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| ON_SubDHash (const ON_SubDHash &)=default |
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| ~ON_SubDHash ()=default |
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void | Dump (ON_TextLog &) const |
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unsigned int | EdgeCount () const |
| Copied from the SubD when the hash is created. More...
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const ON_SHA1_Hash | EdgeHash () const |
| If two SubDs have identical EdgeHash() values, then the SubD edge information associated with HashType() is identical. More...
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unsigned int | FaceCount () const |
| Copied from the SubD when the hash is created. More...
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const ON_SHA1_Hash | FaceHash () const |
| If two SubDs have identical FaceHash() values, then the SubD face information associated with HashType() is identical. More...
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ON_SubDHashType | HashType () const |
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bool | IsEmpty () const |
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bool | IsNotEmpty () const |
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ON_SubDHash & | operator= (const ON_SubDHash &)=default |
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bool | Read (class ON_BinaryArchive &) |
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ON__UINT64 | SubDGeometryContentSerialNumber () const |
| The geometry content serial number can be used to quickly determine if a SubD is exactly the instance used to create this ON_SubDHash. If the geometry content serial numbers are equal, then the SubD is identical to the one use to create the hash. If the geometry content serial numbers differ, the current SubD hashes need to be checked against this to see what, if anything, changed. For example, moving a vertex will not change a topology hash. More...
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const ON_SHA1_Hash | SubDHash () const |
| If two SubDs have identical SubDHash() values, then the SubD vertex, edge, and face information associated with HashType() is identical. More...
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ON__UINT64 | SubDRuntimeSerialNumber () const |
| The runtime serial number can be used to identify the SubD that was hashed to created this ON_SubDHash. More...
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unsigned int | VertexCount () const |
| Copied from the SubD when the hash is created. More...
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const ON_SHA1_Hash | VertexHash () const |
| If two SubDs have identical VertexHash() values, then the SubD vertex information associated with HashType() is identical. More...
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bool | Write (class ON_BinaryArchive &) const |
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ON_SubDHash provides a simple way to save a SubD's vertex, edge, and face SHA1 hashes. Typically it is used when a calculation needs to know if the current SubD has is geometrically identical to a previous SubD. When speed is not important, comparing the current value of ON_SubD::GeometryHash() to a previously save value of ON_SubD::GeometryHash() is functionally identical but typically much slower when the SubDs are different.