#include <opennurbs_topology.h>

Public Types
enum	: unsigned int { Damaged = 0x80000000U }

enum	EdgeAttributes : unsigned int { Open = 1, Closed = 2, ZeroLength = 4, NonzeroLength = 8, Wire = 16, Boundary = 32, Interior = 64, Nonmanifold = 128, InteriorOriented = 256, InteriorNotOriented = 512, InteriorSmooth = 1024, InteriorCrease = 2048, InteriorTwoFaced = 4096, InteriorSeam = 8192, InteriorSlit = 16384, InteriorSharp = 32768, Mask = 0xFFFF }

Static Public Member Functions
static bool	EdgeIsEligible (unsigned int edge_attributes_filter, const class ON_SubDEdge *edge)
	Inspects edge attributes to determine if the edge is has the attributes specified by the edge_attributes_filter. More...

static bool	EdgeIsEligible (unsigned int edge_attributes_filter, unsigned int edge_attributes)

static bool	HasBoundary (unsigned int aggregate_edge_component_attributes)
	Inspects aggregate edge demographics to determine if there is a boundary edge. More...

static bool	IsManifold (unsigned int aggregate_edge_component_attributes)
	Inspects aggregate edge demographics to determine if the object is a manifold, possibly with boundary. Face orientation is ignored. More...

static bool	IsNotManifold (unsigned int aggregate_edge_component_attributes)
	Inspects aggregate edge demographics to determine if the object is a not manifold. More...

static bool	IsNotOriented (unsigned int aggregate_edge_component_attributes)
	Inspects aggregate edge demographics to determine if the faces have a compatible orientations. More...

static bool	IsOriented (unsigned int aggregate_edge_component_attributes)
	Inspects aggregate edge demographics to determine if the faces have a compatible orientations. More...

static bool	IsSolid (unsigned int aggregate_edge_component_attributes)
	Inspects aggregate edge demographics to determine if every edge has exactly two faces and all the faces have a compatible orientations. More...

Detailed Description

THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED WARRANTY. ALL IMPLIED WARRANTIES OF FITNESS FOR ANY PARTICULAR PURPOSE AND OF MERCHANTABILITY ARE HEREBY DISCLAIMED.

For complete openNURBS copyright information see http://www.opennurbs.org.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum : unsigned int

Enumerator
Damaged	summary> The Damaged bit is set when an vertex, edge, or face component has a critical data structure flaw. /summary>

◆ EdgeAttributes

enum ON_ComponentAttributes::EdgeAttributes : unsigned int

ON_EdgeAttributeFlags are used to report attributes of single edge objects, like ON_SubDEdge and ON_BrepEdge, and aggregate edge demographics in objects with topology like ON_SubD, ON_Mesh and ON_Brep.

See also: ON_BrepEdge::EdgeFlags, ON_SubDEdge::EdgeFlags, ON_Brep::AggregateEdgeFlags, ON_Mesh::AggregateEdgeFlags, ON_SubD::AggregateEdgeFlags

Enumerator
Open	summary> The Open bit is set when an edge has distinct start and end vertices. Open and Closed are mutually exclusive edge attributes. Note that an open edge can have zero length when two distinct vertices have identical locations and the edge's geometry is a zero length curve. /summary> summary> The Closed bit is set when an edge begins and ends at the same vertex. Open and Closed are mutually exclusive edge attributes. Note that a closed edge can have zero length or nonzero length. /summary>
Closed	summary> The ZeroLength edge has zero length. It can be open or closed. ZeroLength and NonzeroLength are mutually exclusive edge attributes. /summary>
ZeroLength	summary> The NonzeroLength edge has non zero length. It can be open or closed. ZeroLength and NonzeroLength are mutually exclusive edge attributes. /summary>
NonzeroLength	summary> The Wire edge has no faces. Wire, Boundary, Interior, and Nonmanifold are mutually exclusive edge attributes. /summary>
Wire	summary> The Boundary edge has one face. Wire, Boundary, Interior, and Nonmanifold are mutually exclusive edge attributes. /summary>
Boundary	summary> The Interior edge has two faces. Wire, Boundary, Interior, and Nonmanifold are mutually exclusive edge attributes. /summary>
Interior	summary> The Nonmanifold edge has three or more faces. Wire, Boundary, Interior, and Nonmanifold are mutually exclusive edge attributes. /summary>
Nonmanifold	summary> The InteriorOriented edge has two faces with compatible face orientations. InteriorOriented and InteriorNotOriented are mutually exclusive interior edge attributes. /summary>
InteriorOriented	summary> The InteriorNotOriented edge has two faces with opposite face orientations. InteriorOriented and InteriorNotOriented are mutually exclusive interior edge attributes. /summary>
InteriorNotOriented	summary> The InteriorSmooth edge has two faces with a guaranteed surface tangent continuity. InteriorSmooth and InteriorCrease are mutually exclusive interior edge attributes. /summary>
InteriorSmooth	summary> The InteriorCrease edge has two faces with a possible surface tangent discontinuity InteriorSmooth and InteriorCrease are mutually exclusive interior edge attributes. /summary>
InteriorCrease	summary> The InteriorTwoFaced edge has two distinct faces. InteriorTwoFaced, InteriorSeam, and InteriorSlit are mutually exclusive interior edge attributes. /summary>
InteriorTwoFaced	summary> The InteriorSeam edge has two faces that are identical and the edge is on the parametric boundary of the face's surface. InteriorTwoFaced, InteriorSeam, and InteriorSlit are mutually exclusive interior edge attributes. /summary> example> Parametric surfaces that are cylinders are an example of a situation where seam edges occur. /example>
InteriorSeam	summary> The InteriorSlit edge has two faces that are identical and the edges is not a seam. InteriorTwoFaced, InteriorSeam, and InteriorSlit are mutually exclusive interior edge attributes. /summary>
InteriorSlit	summary> The InteriorSharp edge has two faces with a guaranteed surface tangent continuity. An InteriorSharp edge is an InteriorSmooth edge with added SubD sharpness. /summary>
InteriorSharp	summary> ON_ComponentAttributes::EdgeAttributes::Mask can be used to isolate EdgeAttributes bits from an unsigned int bit field containing other information. /summary> example> Determine if two unsigned ints have identical ON_ComponentAttributes::EdgeAttributes settings. code> unsigned int combined_flags1 = ...; unsigned int combined_flags2 = ...; unsigned int edge_flags1 = (ON_ComponentAttributes::EdgeAttributes::Mask & combined_flags1); unsigned int edge_flags2 = (ON_ComponentAttributes::EdgeAttributes::Mask & combined_flags2); if ( edge_flags1 == edge_flags1) { ... edges flags are identical ... } /code> /example>
Mask

Member Function Documentation

◆ EdgeIsEligible() [1/2]

static bool ON_ComponentAttributes::EdgeIsEligible	(	unsigned int	edge_attributes_filter,
		const class ON_SubDEdge *	edge
	)

static

Inspects edge attributes to determine if the edge is has the attributes specified by the edge_attributes_filter.

◆ EdgeIsEligible() [2/2]

static bool ON_ComponentAttributes::EdgeIsEligible	(	unsigned int	edge_attributes_filter,
		unsigned int	edge_attributes
	)

static

◆ HasBoundary()

static bool ON_ComponentAttributes::HasBoundary ( unsigned int aggregate_edge_component_attributes )

static

Inspects aggregate edge demographics to determine if there is a boundary edge.

Parameters

aggregate_edge_component_attributes Value made by bitwise or of ON_ComponentAttributes::EdgeAttributes values for every edge in the object.

Returns: True if there is at least one edge that has exactly one face. Otherwise, false is returned. /returns>

◆ IsManifold()

static bool ON_ComponentAttributes::IsManifold ( unsigned int aggregate_edge_component_attributes )

static

Inspects aggregate edge demographics to determine if the object is a manifold, possibly with boundary. Face orientation is ignored.

Parameters

aggregate_edge_component_attributes Value made by bitwise or of ON_ComponentAttributes::EdgeAttributes values for every edge in the object.

Returns: If every edge has one or two faces, then true is returned. If bAllowBoundaryEdges is true and every edge has one or two faces, then true is returned. Otherwise, false is returned. /returns>

◆ IsNotManifold()

static bool ON_ComponentAttributes::IsNotManifold ( unsigned int aggregate_edge_component_attributes )

static

Inspects aggregate edge demographics to determine if the object is a not manifold.

Parameters

aggregate_edge_component_attributes Value made by bitwise or of ON_ComponentAttributes::EdgeAttributes values for every edge in the object.

Returns: True if there is at least one edge with 3 or more faces or at least one wire edge.

◆ IsNotOriented()

static bool ON_ComponentAttributes::IsNotOriented ( unsigned int aggregate_edge_component_attributes )

static

Inspects aggregate edge demographics to determine if the faces have a compatible orientations.

Parameters

aggregate_edge_component_attributes Value made by bitwise or of ON_ComponentAttributes::EdgeAttributes values for every edge in the object.

Returns: If there is an edge edge with exactly two faces and those faces have incompatible orientations, then true is returned. Otherwise, false is returned. /returns>

◆ IsOriented()

static bool ON_ComponentAttributes::IsOriented ( unsigned int aggregate_edge_component_attributes )

static

Inspects aggregate edge demographics to determine if the faces have a compatible orientations.

Parameters

aggregate_edge_demographics Value made by bitwise or of ON_ComponentAttributes::EdgeAttributes values for every edge in the object.

Returns: If for every edge edge with exactly two faces, those two faces have compatible orientations, then true is returned. Otherwise, false is returned. /returns>

◆ IsSolid()

static bool ON_ComponentAttributes::IsSolid ( unsigned int aggregate_edge_component_attributes )

static

Inspects aggregate edge demographics to determine if every edge has exactly two faces and all the faces have a compatible orientations.

This sample shows how to determine if an ON_SubD is a solid.

ON_SubD subd = ...;
if (ON_ComponentAttributes::IsSolid(subd.AggregateEdgeComponentAttributes())
{ 
  ///< subd is a solid
  ...
}

Parameters

aggregate_edge_component_attributes Value made by bitwise or of ON_ComponentAttributes::EdgeAttributes values for every edge in the object.

Returns: True if every edge has exactly two faces.

See also: ON_Brep::EdgeDemographics, ON_SUbD::EdgeDemographics, ON_Mesh::EdgeDemographics, ON_ComponentAttributes::IsSolid, ON_ComponentAttributes::IsNotSolid, ON_ComponentAttributes::HasBoundary, ON_ComponentAttributes::IsOriented, ON_ComponentAttributes::IsNotOriented, ON_ComponentAttributes::IsManifold, ON_ComponentAttributes::IsNotManifold

Public Types

Static Public Member Functions

Detailed Description

Member Enumeration Documentation

◆ anonymous enum

◆ EdgeAttributes

Member Function Documentation

◆ EdgeIsEligible() [1/2]

◆ EdgeIsEligible() [2/2]

◆ HasBoundary()

◆ IsManifold()

◆ IsNotManifold()

◆ IsNotOriented()

◆ IsOriented()

◆ IsSolid()