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opennurbs_brep_region.cpp
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/* $NoKeywords: $ */
/*
//
// Copyright (c) 1993-2012 Robert McNeel & Associates. All rights reserved.
// OpenNURBS, Rhinoceros, and Rhino3D are registered trademarks of Robert
// McNeel & Associates.
//
// 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>.
//
////////////////////////////////////////////////////////////////
*/
#include "opennurbs.h"
class ON_BrepRegionTopologyUserData : public ON_UserData
{
ON_OBJECT_DECLARE(ON_BrepRegionTopologyUserData);
public:
static ON_BrepRegionTopology* RegionTopology(const ON_Brep* brep,bool bValidateFaceCount);
ON_BrepRegionTopologyUserData();
~ON_BrepRegionTopologyUserData();
ON_BrepRegionTopologyUserData(const ON_BrepRegionTopologyUserData&);
ON_BrepRegionTopologyUserData& operator=(const ON_BrepRegionTopologyUserData&);
unsigned int SizeOf() const;
ON_BOOL32 Archive() const;
ON_BOOL32 Transform( const ON_Xform& );
ON_BOOL32 Write(ON_BinaryArchive& binary_archive) const;
ON_BOOL32 Read(ON_BinaryArchive& binary_archive);
ON_BOOL32 GetDescription( ON_wString& description );
ON_BrepRegionTopology m_region_topology;
};
ON_OBJECT_IMPLEMENT(ON_BrepRegionTopologyUserData,ON_UserData,"7FE23D63-E536-43f1-98E2-C807A2625AFF");
ON_BrepRegionTopology* ON_BrepRegionTopologyUserData::RegionTopology(const ON_Brep* brep,bool bValidateFaceCount)
{
ON_BrepRegionTopology* rtop = 0;
if ( brep )
{
ON_BrepRegionTopologyUserData* ud = ON_BrepRegionTopologyUserData::Cast(brep->GetUserData(ON_BrepRegionTopologyUserData::m_ON_BrepRegionTopologyUserData_class_id.Uuid()));
if (ud)
{
rtop = &ud->m_region_topology;
if (bValidateFaceCount && rtop->m_FS.Count() != 2*brep->m_F.Count())
rtop = 0;
}
}
return rtop;
}
ON_BrepRegionTopologyUserData::ON_BrepRegionTopologyUserData()
{
m_userdata_copycount = 1;
m_userdata_uuid = ON_BrepRegionTopologyUserData::m_ON_BrepRegionTopologyUserData_class_id.Uuid();
m_application_uuid = ON_opennurbs4_id;
}
ON_BrepRegionTopologyUserData::~ON_BrepRegionTopologyUserData()
{
}
ON_BrepRegionTopologyUserData::ON_BrepRegionTopologyUserData( const ON_BrepRegionTopologyUserData& src )
: ON_UserData(src)
, m_region_topology(src.m_region_topology)
{
m_userdata_uuid = ON_BrepRegionTopologyUserData::m_ON_BrepRegionTopologyUserData_class_id.Uuid();
m_application_uuid = ON_opennurbs4_id;
}
ON_BrepRegionTopologyUserData& ON_BrepRegionTopologyUserData::operator=(const ON_BrepRegionTopologyUserData& src)
{
if ( this != &src )
{
ON_UserData::operator=(src);
m_region_topology = src.m_region_topology;
}
return *this;
}
unsigned int ON_BrepRegionTopologyUserData::SizeOf() const
{
return ON_UserData::SizeOf() + m_region_topology.SizeOf();
}
ON_BOOL32 ON_BrepRegionTopologyUserData::Archive() const
{
return true;
}
ON_BOOL32 ON_BrepRegionTopologyUserData::Transform( const ON_Xform& xform)
{
// Transforming the bbox makes it grow too large under repeated
// rotations. So, we will destroy it here and reset it below.
//m_bbox.Transform(xform);
int i, j;
const int region_count = m_region_topology.m_R.Count();
const int faceside_count = m_region_topology.m_FS.Count();
const ON_Brep* brep = ON_Brep::Cast(Owner());
if ( brep )
{
const int face_count = brep->m_F.Count();
for (i = 0; i < region_count; i++ )
{
ON_BrepRegion& r = m_region_topology.m_R[i];
r.m_bbox.Destroy();
for ( j = 0; j < r.m_fsi.Count(); j++ )
{
int fsi = r.m_fsi[j];
if ( fsi >= 0 && fsi < faceside_count )
{
int fi = m_region_topology.m_FS[fsi].m_fi;
if ( fi >= 0 && fi < face_count )
{
r.m_bbox.Union(brep->m_F[fi].BoundingBox());
}
}
}
}
}
for ( i = 0; i < faceside_count; i++ )
m_region_topology.m_FS[i].TransformUserData(xform);
for ( i = 0; i < region_count; i++ )
m_region_topology.m_R[i].TransformUserData(xform);
return true;
}
ON_BOOL32 ON_BrepRegionTopologyUserData::Write(ON_BinaryArchive& binary_archive) const
{
return m_region_topology.Write(binary_archive);
}
ON_BOOL32 ON_BrepRegionTopologyUserData::Read(ON_BinaryArchive& binary_archive)
{
m_region_topology.m_brep = ON_Brep::Cast(Owner());
return m_region_topology.Read(binary_archive);
}
ON_BOOL32 ON_BrepRegionTopologyUserData::GetDescription( ON_wString& description )
{
description=L"Brep Region Topology";
return true;
}
ON_OBJECT_IMPLEMENT(ON_BrepFaceSide,ON_Object,"30930370-0D5B-4ee4-8083-BD635C7398A4");
ON_BOOL32 ON_BrepFaceSide::IsValid( ON_TextLog* text_log ) const
{
return true;
}
ON_BrepFaceSide::ON_BrepFaceSide()
{
m_faceside_index = -1;
m_ri = -1;
m_fi = -1;
m_srf_dir = 0;
m_rtop = 0;
memset(&m_faceside_user,0,sizeof(m_faceside_user));
}
ON_BrepFaceSide::~ON_BrepFaceSide()
{
}
ON_BrepFaceSide& ON_BrepFaceSide::operator=(const ON_BrepFaceSide& src)
{
if ( this != &src)
{
// do not copy m_brep pointer
m_faceside_user = src.m_faceside_user;
m_faceside_index = src.m_faceside_index;
m_ri = src.m_ri;
m_fi = src.m_fi;
m_srf_dir = src.m_srf_dir;
ON_Object::operator=(src);
}
return *this;
}
ON_BOOL32 ON_BrepFaceSide::Write(ON_BinaryArchive& file) const
{
bool rc = file.BeginWrite3dmChunk(TCODE_ANONYMOUS_CHUNK,1,0);
if ( !rc )
return false;
for(;;)
{
rc = file.WriteInt( m_faceside_index );
if (!rc) break;
rc = file.WriteInt( m_ri );
if (!rc) break;
rc = file.WriteInt( m_fi );
if (!rc) break;
rc = file.WriteInt( m_srf_dir );
if (!rc) break;
break;
}
if (!file.EndWrite3dmChunk())
rc = false;
return rc;
}
ON_BOOL32 ON_BrepFaceSide::Read(ON_BinaryArchive& file)
{
int major_version = 0;
int minor_version = 0;
bool rc = file.BeginRead3dmChunk(TCODE_ANONYMOUS_CHUNK,&major_version,&minor_version);
if ( !rc )
return false;
for(;;)
{
rc = (1==major_version);
if (!rc) break;
rc = file.ReadInt( &m_faceside_index );
if (!rc) break;
rc = file.ReadInt( &m_ri );
if (!rc) break;
rc = file.ReadInt( &m_fi );
if (!rc) break;
rc = file.ReadInt( &m_srf_dir );
if (!rc) break;
break;
}
if (!file.EndRead3dmChunk())
rc = false;
return rc;
}
ON_Brep* ON_BrepFaceSide::Brep() const
{
return m_rtop ? m_rtop->Brep() : 0;
}
ON_BrepRegionTopology* ON_BrepFaceSide::RegionTopology() const
{
return m_rtop;
}
ON_BrepRegion* ON_BrepFaceSide::Region() const
{
ON_BrepRegion* region = 0;
if ( m_rtop && m_ri >= 0 && m_ri < m_rtop->m_R.Count() )
{
region = &m_rtop->m_R[m_ri];
//region = const_cast<ON_BrepRegion*>(&m_rtop->m_R[m_ri]);
}
return region;
}
class ON_BrepFace* ON_BrepFaceSide::Face() const
{
class ON_BrepFace* face = 0;
if ( m_rtop && m_fi >= 0 )
{
ON_Brep* brep = m_rtop->Brep();
if ( brep && m_fi < brep->m_F.Count() )
{
face = &brep->m_F[m_fi];
}
}
return face;
}
int ON_BrepFaceSide::SurfaceNormalDirection() const
{
return m_srf_dir;
}
ON_OBJECT_IMPLEMENT(ON_BrepRegion,ON_Object,"CA7A0092-7EE6-4f99-B9D2-E1D6AA798AA1");
ON_BOOL32 ON_BrepRegion::IsValid( ON_TextLog* text_log ) const
{
return true;
}
ON_BrepRegion::ON_BrepRegion()
{
m_region_index = -1;
m_type = -1;
m_rtop = 0;
memset(&m_region_user,0,sizeof(m_region_user));
}
ON_BrepRegion::~ON_BrepRegion()
{
}
ON_BrepRegion& ON_BrepRegion::operator=(const ON_BrepRegion& src)
{
if ( this != &src )
{
// do not copy m_brep pointer
m_region_user = src.m_region_user;
m_region_index = src.m_region_index;
m_fsi = src.m_fsi;
m_type = src.m_type;
m_bbox = src.m_bbox;
ON_Object::operator=(src);
}
return *this;
}
ON_BOOL32 ON_BrepRegion::Write(ON_BinaryArchive& file) const
{
bool rc = file.BeginWrite3dmChunk(TCODE_ANONYMOUS_CHUNK,1,0);
if ( !rc )
return false;
for(;;)
{
rc = file.WriteInt( m_region_index );
if (!rc) break;
rc = file.WriteInt( m_type );
if (!rc) break;
rc = file.WriteArray( m_fsi );
if (!rc) break;
rc = file.WriteBoundingBox( m_bbox );
if (!rc) break;
break;
}
if (!file.EndWrite3dmChunk())
rc = false;
return rc;
}
ON_BOOL32 ON_BrepRegion::Read(ON_BinaryArchive& file)
{
int major_version = 0;
int minor_version = 0;
bool rc = file.BeginRead3dmChunk(TCODE_ANONYMOUS_CHUNK,&major_version,&minor_version);
if ( !rc )
return false;
for(;;)
{
rc = (1==major_version);
if (!rc) break;
rc = file.ReadInt( &m_region_index );
if (!rc) break;
rc = file.ReadInt( &m_type );
if (!rc) break;
rc = file.ReadArray( m_fsi );
if (!rc) break;
rc = file.ReadBoundingBox( m_bbox );
if (!rc) break;
break;
}
if (!file.EndRead3dmChunk())
rc = false;
return rc;
}
ON_Brep* ON_BrepRegion::Brep() const
{
return m_rtop ? m_rtop->Brep() : 0;
}
ON_BrepRegionTopology* ON_BrepRegion::RegionTopology() const
{
return m_rtop;
}
ON_BrepFaceSide* ON_BrepRegion::FaceSide(int rfsi) const
{
ON_BrepFaceSide* faceside = 0;
if ( m_rtop && rfsi >= 0 && rfsi < m_fsi.Count() )
{
int fsi = m_fsi[rfsi];
if ( fsi >= 0 && fsi < m_rtop->m_FS.Count() )
{
faceside = &m_rtop->m_FS[fsi];
}
}
return faceside;
}
bool ON_BrepRegion::IsFinite() const
{
return (1 == m_type);
}
const ON_BoundingBox& ON_BrepRegion::BoundingBox() const
{
return m_bbox;
}
ON_BrepFaceSideArray::ON_BrepFaceSideArray()
{
}
ON_BrepFaceSideArray::~ON_BrepFaceSideArray()
{
}
bool ON_BrepFaceSideArray::Read( ON_BinaryArchive& file )
{
Empty();
int count = 0;
int i;
int major_version = 0;
int minor_version = 0;
bool rc = file.BeginRead3dmChunk( TCODE_ANONYMOUS_CHUNK, &major_version, &minor_version );
if (rc)
{
for(;;)
{
rc = (1 == major_version);
if (!rc) break;
if (rc) rc = file.ReadInt(&count);
SetCapacity(count);
for ( i = 0; i < count && rc; i++ )
{
ON_BrepFaceSide& faceside = AppendNew();
rc = faceside.Read(file)?true:false;
}
break;
}
if ( !file.EndRead3dmChunk() )
rc = false;
}
return rc;
}
bool ON_BrepFaceSideArray::Write( ON_BinaryArchive& file ) const
{
int i;
bool rc = file.BeginWrite3dmChunk( TCODE_ANONYMOUS_CHUNK, 1, 0 );
if (rc)
{
const int count = Count();
if (rc) rc = file.WriteInt( count );
for ( i = 0; rc && i < count; i++ )
{
rc = m_a[i].Write(file)?true:false;
}
if ( !file.EndWrite3dmChunk() )
rc = false;
}
return rc;
}
unsigned int ON_BrepFaceSideArray::SizeOf() const
{
unsigned int sz = SizeOfArray();
for ( int i = 0; i < m_count; i++ )
sz += (m_a[i].SizeOf() - ((unsigned int)sizeof(ON_BrepFaceSide)));
return sz;
}
ON_BrepRegionArray::ON_BrepRegionArray()
{
}
ON_BrepRegionArray::~ON_BrepRegionArray()
{
}
bool ON_BrepRegionArray::Read( ON_BinaryArchive& file )
{
Empty();
int count = 0;
int i;
int major_version = 0;
int minor_version = 0;
bool rc = file.BeginRead3dmChunk( TCODE_ANONYMOUS_CHUNK, &major_version, &minor_version );
if (rc)
{
for(;;)
{
rc = (1 == major_version);
if (!rc) break;
if (rc) rc = file.ReadInt(&count);
SetCapacity(count);
for ( i = 0; i < count && rc ; i++ )
{
ON_BrepRegion& region = AppendNew();
rc = region.Read(file)?true:false;
}
break;
}
if ( !file.EndRead3dmChunk() )
rc = false;
}
return rc;
}
bool ON_BrepRegionArray::Write( ON_BinaryArchive& file ) const
{
int i;
bool rc = file.BeginWrite3dmChunk( TCODE_ANONYMOUS_CHUNK, 1, 0 );
if (rc)
{
const int count = Count();
if (rc) rc = file.WriteInt( count );
for ( i = 0; rc && i < count; i++ )
{
rc = m_a[i].Write(file)?true:false;
}
if ( !file.EndWrite3dmChunk() )
rc = false;
}
return rc;
}
unsigned int ON_BrepRegionArray::SizeOf() const
{
unsigned int sz = SizeOfArray();
for ( int i = 0; i < m_count; i++ )
sz += (m_a[i].SizeOf() - ((unsigned int)sizeof(ON_BrepRegion)));
return sz;
}
ON_BrepRegionTopology::ON_BrepRegionTopology()
{
}
ON_BrepRegionTopology::~ON_BrepRegionTopology()
{
}
ON_BrepRegionTopology::ON_BrepRegionTopology(const ON_BrepRegionTopology& src)
{
int i;
// do not copy m_brep
m_brep = 0;
m_FS = src.m_FS;
m_R = src.m_R;
for (i = 0; i < m_FS.Count(); i++ )
m_FS[i].m_rtop = this;
for (i = 0; i < m_R.Count(); i++ )
m_R[i].m_rtop = this;
}
ON_BrepRegionTopology& ON_BrepRegionTopology::operator=(const ON_BrepRegionTopology& src)
{
if ( this != &src )
{
// do not copy m_brep
m_FS = src.m_FS;
m_R = src.m_R;
int i;
for (i = 0; i < m_FS.Count(); i++ )
m_FS[i].m_rtop = this;
for (i = 0; i < m_R.Count(); i++ )
m_R[i].m_rtop = this;
}
return *this;
}
bool ON_BrepRegionTopology::IsValid( ON_TextLog* text_log) const
{
#define PRINT_MSG(s) if (text_log) text_log->Print(s)
#define PRINT_MSG1(s,a1) if (text_log) text_log->Print(s,a1)
#define PRINT_MSG2(s,a1,a2) if (text_log) text_log->Print(s,a1,a2)
#define PRINT_MSG3(s,a1,a2,a3) if (text_log) text_log->Print(s,a1,a2,a3)
int infinite_region_index = -1;
int rfs_count = 0;
int ri, fsi;
if ( !m_brep )
{
PRINT_MSG("ON_BrepRegionTopology::m_brep is NULL\n");
return false;
}
const int faceside_count = m_FS.Count();
if ( faceside_count != 2*m_brep->m_F.Count() )
{
PRINT_MSG("ON_BrepRegionTopology::m_FS.Count() != 2*m_brep->m_F.Count()\n");
return false;
}
int void_regionside_count = 0;
for ( fsi = 0; fsi < faceside_count; fsi++ )
{
const ON_BrepFaceSide& fs = m_FS[fsi];
const int fi = fsi/2;
const int srf_dir = (fsi%2) ? -1 : 1;
if ( fs.m_rtop != this )
{
PRINT_MSG1("ON_BrepRegionTopology::m_FS[%d].m_rtop != this\n",fsi);
return false;
}
if ( fi != fs.m_fi )
{
PRINT_MSG3("ON_BrepRegionTopology::m_FS[%d].m_fi = %d != %d\n",fsi,fs.m_fi,fi);
return false;
}
if ( fs.m_srf_dir != srf_dir )
{
PRINT_MSG3("ON_BrepRegionTopology::m_FS[%d].m_srf_dir = %d != %d\n",fsi,fs.m_srf_dir,srf_dir);
return false;
}
if ( -1 == fs.m_ri )
{
void_regionside_count++;
}
}
const int region_count = m_R.Count();
if ( region_count <= 0 )
{
PRINT_MSG("ON_BrepRegionTopology::m_R.Count() <= 0\n");
return false;
}
for ( ri = 0; ri < region_count; ri++ )
{
const ON_BrepRegion& region = m_R[ri];
if ( region.m_rtop != this )
{
PRINT_MSG1("ON_BrepRegionTopology::m_R[%d].m_rtop != this\n",ri);
return false;
}
if ( region.m_type < 0 )
{
PRINT_MSG("ON_BrepRegionTopology::m_R[%d].m_type < 0\n");
return false;
}
if ( region.m_type > 1 )
{
PRINT_MSG("ON_BrepRegionTopology::m_R[%d].m_type > 1\n");
return false;
}
if ( 0 == region.m_type )
{
if ( infinite_region_index >= 0 )
{
PRINT_MSG2("ON_BrepRegionTopology::m_R[%d and %d].m_type = 0\n",infinite_region_index,ri);
return false;
}
infinite_region_index = ri;
}
if ( region.m_fsi.Count() <= 0 )
{
PRINT_MSG1("ON_BrepRegionTopology::m_R[%d].m_fsi.Count() <= 0\n",ri);
return false;
}
for ( int rfsi = 0; rfsi < region.m_fsi.Count(); rfsi++ )
{
fsi = region.m_fsi[rfsi];
if ( fsi < 0 || fsi >= faceside_count)
{
PRINT_MSG2("ON_BrepRegionTopology::m_R[%d].m_fsi[%d] is out of range\n",ri,rfsi);
return false;
}
const ON_BrepFaceSide& faceside = m_FS[fsi];
if ( faceside.m_ri != ri )
{
PRINT_MSG3("ON_BrepRegionTopology::m_FS[m_R[%d].m_fsi[%d]].m_ri != %d\n",ri,rfsi,ri);
return false;
}
for ( int j = rfsi+1; j < region.m_fsi.Count(); j++ )
{
if ( fsi == region.m_fsi[j] )
{
PRINT_MSG3("ON_BrepRegionTopology::m_R[%d].m_fsi[%d and %d]] are duplicates\n",ri,rfsi,j);
return false;
}
}
rfs_count++;
}
}
if ( faceside_count != rfs_count+void_regionside_count )
{
PRINT_MSG2("Sum of ON_BrepRegionTopology::m_R[%d].m_fsi.Count() = %d != m_FS.Count()\n",ri,rfs_count);
return false;
}
if ( infinite_region_index < 0 )
{
PRINT_MSG("ON_BrepRegionTopology::m_R[] has no infinte region\n");
return false;
}
#undef PRINT_MSG
#undef PRINT_MSG1
#undef PRINT_MSG2
#undef PRINT_MSG3
return true;
}
ON_Brep* ON_BrepRegionTopology::Brep() const
{
return m_brep;
}
bool ON_BrepRegionTopology::Read( ON_BinaryArchive& file )
{
int i;
int major_version = 0;
int minor_version = 0;
bool rc = file.BeginRead3dmChunk(TCODE_ANONYMOUS_CHUNK,&major_version,&minor_version);
if ( !rc )
return false;
for(;;)
{
rc = (1 == major_version);
if (!rc) break;
rc = m_FS.Read(file);
for ( i = 0; i < m_FS.Count(); i++ )
m_FS[i].m_rtop = this;
if (!rc) break;
rc = m_R.Read(file);
for ( i = 0; i < m_R.Count(); i++ )
m_R[i].m_rtop = this;
if (!rc) break;
break;
}
if ( !file.EndRead3dmChunk() )
rc = false;
return rc;
}
bool ON_BrepRegionTopology::Write( ON_BinaryArchive& file) const
{
bool rc = file.BeginWrite3dmChunk(TCODE_ANONYMOUS_CHUNK,1,0);
if (!rc)
return false;
for(;;)
{
rc = m_FS.Write(file);
if (!rc) break;
rc = m_R.Write(file);
if (!rc) break;
break;
}
if ( !file.EndWrite3dmChunk() )
rc = false;
return rc;
}
unsigned int ON_BrepRegionTopology::SizeOf() const
{
return m_FS.SizeOf() + m_R.SizeOf();
}
ON_BrepFaceSide* ON_BrepFace::FaceSide(int dir) const
{
ON_BrepFaceSide* faceside = 0;
const ON_BrepRegionTopology* rtop = ON_BrepRegionTopologyUserData::RegionTopology(m_brep,true);
if ( rtop )
{
if ( m_face_index >= 0 && m_face_index < m_brep->m_F.Count() )
{
int fsi = 2*m_face_index + ((dir<1)?1:0);
faceside = const_cast<ON_BrepFaceSide*>(&rtop->m_FS[fsi]);
if ( m_face_index != faceside->m_fi || dir != faceside->m_srf_dir )
faceside = 0;
}
}
return faceside;
}
bool ON_Brep::HasRegionTopology() const
{
ON_UserData* ud = GetUserData(ON_BrepRegionTopologyUserData::m_ON_BrepRegionTopologyUserData_class_id.Uuid());
return (0 != ud);
}
const ON_BrepRegionTopology& ON_Brep::RegionTopology() const
{
ON_BrepRegionTopology* rtop = ON_BrepRegionTopologyUserData::RegionTopology(this,false);
if ( 0 == rtop )
{
ON_BrepRegionTopologyUserData* ud = new ON_BrepRegionTopologyUserData();
if ( const_cast<ON_Brep*>(this)->AttachUserData(ud) )
{
rtop = &ud->m_region_topology;
}
else
{
ON_ERROR("Unable to create brep region topology");
delete ud;
}
}
// no region toplogy is available in public opennurbs.
return *rtop;
}
void ON_Brep::DestroyRegionTopology()
{
ON_UserData* ud = GetUserData(ON_BrepRegionTopologyUserData::m_ON_BrepRegionTopologyUserData_class_id.Uuid());
if ( ud )
delete ud;
}
void ON_Brep::MemoryRelocate()
{
int i, count;
// The call to the base class MemoryRelocate() takes care of
// updating user data back-pointers.
ON_Geometry::MemoryRelocate();
// When the memory location of an ON_Brep changes,
// the m_brep backpointers on its pieces need to be updated.
count = m_E.Count();
for ( i = 0; i < count; i++ )
{
m_E[i].m_brep = this;
}
count = m_T.Count();
for ( i = 0; i < count; i++ )
{
m_T[i].m_brep = this;
}
count = m_L.Count();
for ( i = 0; i < count; i++ )
{
m_L[i].m_brep = this;
}
count = m_F.Count();
for ( i = 0; i < count; i++ )
{
m_F[i].m_brep = this;
}
ON_BrepRegionTopology* rtop = ON_BrepRegionTopologyUserData::RegionTopology(this,false);
if ( rtop )
{
rtop->m_brep = this;
count = rtop->m_FS.Count();
for ( i = 0; i < count; i++ )
rtop->m_FS[i].m_rtop = rtop;
count = rtop->m_R.Count();
for ( i = 0; i < count; i++ )
rtop->m_R[i].m_rtop = rtop;
}
}
ON_Brep* ON_Brep::SubBrep(
int subfi_count,
const int* subfi,
ON_Brep* sub_brep
) const
{
class LeakStopper : public ON_Workspace
{
// If an error occures during construction,
// this class cleans up sub_brep in an
// appropriate fashion.
public:
LeakStopper() {m_p=0;m_sub_brep=0;}
~LeakStopper() {if (m_p) delete m_p; else if (m_sub_brep) m_sub_brep->Destroy();}
ON_Brep* m_p; // ON_Brep::SubBrep allocated sub_brep
ON_Brep* m_sub_brep; // user's sub_brep argument
};
LeakStopper leak_stopper;
if ( sub_brep )
sub_brep->Destroy();
if ( subfi_count <= 0 || 0 == subfi )
return 0;
if ( subfi_count > m_F.Count() )
return 0;
// validate indices in extract_fi[] and
// make sure there are no duplicates.
int fi, fli, lti, i, j;
int Lcount = 0;
int Tcount = 0;
int Ecount = 0;
int Vcount = 0;
int maxfi = -1;
int minfi = m_F.Count();
int* Emap = leak_stopper.GetIntMemory(m_E.Count());
memset(Emap,0,m_E.Count()*sizeof(Emap[0]));
int* Vmap = leak_stopper.GetIntMemory(m_V.Count());
memset(Vmap,0,m_V.Count()*sizeof(Vmap[0]));
for ( i = 0; i < subfi_count; i++ )
{
fi = subfi[i];
if ( fi < 0 || fi >= m_F.Count() )
{
ON_ERROR("ON_Brep::SubBrep sub_fi[] has invalid indices");
return 0;
}
if ( fi > maxfi )
maxfi = fi;
else if ( fi < minfi )
minfi = fi;
else
{
for ( j = 0; j < i; j++ )
{
if ( subfi[j] == fi )
{
ON_ERROR("ON_Brep::SubBrep sub_fi[] has duplicate indices");
return 0;
}
}
}
const ON_BrepFace& face = m_F[fi];
for ( fli = 0; fli < face.m_li.Count(); fli++ )
{
const ON_BrepLoop* loop = face.Loop(fli);
if ( !loop || this != loop->Brep() )
return 0;
Lcount++;
for ( lti = 0; lti < loop->m_ti.Count(); lti++ )
{
const ON_BrepTrim* trim = loop->Trim(lti);
if ( !trim || this != trim->Brep() )
return 0;
Tcount++;
if ( trim->m_vi[0] < 0 || trim->m_vi[0] >= m_V.Count() )
return 0;
if ( trim->m_vi[1] < 0 || trim->m_vi[1] >= m_V.Count() )
return 0;
if ( 0 == Vmap[trim->m_vi[0]] )
{
Vmap[trim->m_vi[0]] = 1;
Vcount++;
}
if ( 0 == Vmap[trim->m_vi[1]] )
{
Vmap[trim->m_vi[1]] = 1;
Vcount++;
}
if ( ON_BrepTrim::singular == trim->m_type ||
ON_BrepTrim::ptonsrf == trim->m_type) // March 29, 2010 Lowell - Allow ptonsrf
{
if ( trim->m_ei >= 0 || trim->m_vi[0] != trim->m_vi[1] )
return 0;
}
else if ( trim->m_ei >= 0 )
{
const ON_BrepEdge* edge = trim->Edge();
if ( 0 == edge || this != edge->Brep() )
return 0;
if ( 0 == Emap[trim->m_ei] )
{
Emap[trim->m_ei] = 1;
Ecount++;
// edge's vertices should already be mapped.
if ( 0 == Vmap[edge->m_vi[0]] )
return 0;
if ( 0 == Vmap[edge->m_vi[1]] )
return 0;
}
}
else
{
return 0;
}
}
}
}
if ( !sub_brep )
{
sub_brep = ON_Brep::New();
leak_stopper.m_p = sub_brep;
}
else
{
leak_stopper.m_sub_brep = sub_brep;
}
sub_brep->m_F.Reserve(subfi_count);
sub_brep->m_L.Reserve(Lcount);
sub_brep->m_T.Reserve(Tcount);
sub_brep->m_E.Reserve(Ecount);
sub_brep->m_V.Reserve(Vcount);
sub_brep->m_S.Reserve(subfi_count);