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◆  GetMpRad()

Get the bounds of the N-gon.

参数

[in]	padr	The point array. The caller owns the pointed array.
[in]	polys	The polygons array. The caller owns the pointed array.
[out]	mp	Assigned the calculated mid-point.
[out]	rad	Assigned the calculated bounding box vector.

◆  GetCount()

Retrieves the number of elements in the array (all PgonEdge edges in all segments).

注意

This is not the same as all N-gon edges since some elements may be from internal polygons with no outer/inner N-gon edge.

返回

The number of elements in the array.

◆  GetEdge() [1/2]

Gets access directly to a PgonEdge . Normally the helper functions below should be used.

参数

[in]

i

An edge index.

返回

The edge.

◆  ID()

Retrieves the PgonEdge::ID() of the edge at index i .

参数

[in]

i

An edge index.

返回

The edge polygon ID.

◆  State()

Retrieves the PgonEdge::State() of the edge at index i .

参数

[in]

i

An edge index.

返回

The edge state.

◆  Edge()

Retrieves the PgonEdge::Edge() of the edge at index i .

参数

[in]

i

An edge index.

返回

The edge.

◆  EdgeIndex()

Retrieves the PgonEdge::EdgeIndex() of the edge at index i .

参数

[in]

i

An edge index.

返回

The edge index.

◆  IsFirst()

Retrieves the PgonEdge::IsFirst() state of the edge at index i .

参数

[in]

i

An edge index.

返回

The edge first state.

◆  IsSegmentEnd()

Retrieves the PgonEdge::IsSegmentEnd() state of the edge at index i .

参数

[in]

i

An edge index.

返回

The edge segment end state.

◆  GetIdentity()

Retrieves the first polygon ID in the array, useful as a marker (identity) for the N-gon giving a polygon ID that is within the N-gon.

返回

The first polygon ID.

◆  GetSegmentCount()

Retrieves the number of segments in the N-gon.

返回

The segment count.

◆  GetSegmentLen()

Retrieves the number of elements in the segment starting from the index startedge . This includes any PgonEdge edges that are internal (NOEDGE).

参数

[in]

startedge

An edge index.

返回

The number of elements in the segment starting from startedge .

◆  GetEdge() [2/2]

Maps to the function PgonEdge::GetEdge() of the edge at index i .

参数

[in]	i	An edge index.
[in]	vadr	The polygon array. The caller owns the pointed array.
[out]	p1	Assigned the first point index.
[out]	p2	Assigned the second point index.

◆  FindPolygon()

Does a search to see if the polygon index id exists within the N-gon; the look up uses tables so it is pretty fast.

参数

[in]

id

A polygon ID to search for.

返回

The index of the first edge found with the specified polygon id ，或 NOTOK if no edge was found.

◆  GetEdgeState()

Retrieves the edges (bits) for polygon id that form any edge/s around the N-gon.

参数

[in]

id

Combined edge bits for all edges with polygon ID matching id : PGONEDGE

返回

A polygon ID.

◆  GetPointCount()

Retrieves the number of points that form the N-gon.

返回

The point count.

◆  GetPolygonCount()

Retrieves the number of polygons that form the N-gon.

返回

The polygon count.

◆  UpdateStates()

If any changes are done to the PgonEdges this must be called when completed to update the REPEAT markers of the PgonEdges.
Also note that any changes must correct set/change any of the marker bits (such as the segment end, or no edges markers).

Member Data Documentation

◆  m_Edge

◆  m_Count

◆  m_CRC

• Pgon