Data Structures | |
struct | A3DTopoBrepDataData |
BrepData structure. More... | |
Detailed Description
Entity type is kA3DTypeTopoBrepData.
Orientations
Here are some important points about A3DTopoBrepData entity orientation:
- Edges are implicitly oriented from the Start vertex toward the End vertex.
- 3D curves referenced by edges are oriented from the Start vertex toward the End vertex.
- Co-edge has two flags that describe orientation:
- Orientation with loop, which relates to the corresponding edge.
- Orientation UV with loop, which relates to the space parametric curve attached to the co-edge, if defined.
- Loop is oriented regarding Ampere rule (in surface parametric space).
- Surface is oriented with the shell so that normals point from the material to the void.
Generally, a face containing a hole is defined with two loops having the same orientation. The outside loop is defined by the m_uiOuterLoopIndex
member of an A3DTopoFaceData structure, regardless of orientation. To get the real face normal vector, you must consider the surface normal vector and the m_pucOrientationWithShell
member of the A3DTopoShellData structure.
sa A3DTopoBrepData, A3DTopoBrepDataData, A3DTopoBrepDataGet, A3DTopoBrepDataCreate
Function Documentation
A3DStatus A3DTopoBrepDataCreate | ( | const A3DTopoBrepDataData * | pData, |
A3DTopoBrepData ** | ppBrep | ||
) |
Creates an A3DTopoBrepData from an A3DTopoBrepDataData structure.
- Version
- 2.0
A3DStatus A3DTopoBrepDataGet | ( | const A3DTopoBrepData * | pBrep, |
A3DTopoBrepDataData * | pData | ||
) |
Populates the A3DTopoBrepDataData structure.
- Version
- 2.0
A3DStatus A3DTopoBrepDataGetEdges | ( | A3DTopoBrepData const * | psBrepData, |
A3DUns32 * | piNbEdges, | ||
A3DTopoEdge *** | papsEdges | ||
) |
Return all A3DTopoEdge from an A3DTopoBrepData.
- Version
- 8.2
A3DStatus A3DTopoBrepDataGetFaces | ( | A3DTopoBrepData const * | psBrepData, |
A3DUns32 * | psNbFaces, | ||
A3DTopoFace *** | papsFaces | ||
) |
Return all A3DTopoFace from an A3DTopoBrepData.
- Version
- 8.2
A3DStatus A3DTopoFaceGetShell | ( | A3DTopoBrepData const * | psBrepData, |
A3DTopoFace const * | psFace, | ||
A3DTopoShell const ** | ppsShell | ||
) |
Return the owning A3DTopoShell of the A3DTopoFace inside the given A3DTopoBrepData.
- Version
- 8.2
A3DStatus A3DTopoLoopGetFace | ( | A3DTopoBrepData const * | psBrepData, |
A3DTopoLoop const * | psLoop, | ||
A3DTopoFace const ** | ppsFace | ||
) |
Return the owning A3DTopoFace of the A3DTopoLoop inside the given A3DTopoBrepData.
- Version
- 8.2