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01cdb463e645a2f0829dd87bb1fe29b5bb5bc306
opennurbs/opennurbs_subd_archive.cpp
Bozo The Builder 01cdb463e6 Sync changes from upstream repository 
Co-authored-by: Andrew Le Bihan <andy@mcneel.com>
Co-authored-by: chuck <chuck@mcneel.com>
Co-authored-by: Dale Fugier <dale@mcneel.com>
Co-authored-by: Dale Lear <dalelear@mcneel.com>
Co-authored-by: David Eränen <david.eranen@mcneel.com>
Co-authored-by: Greg Arden <greg@mcneel.com>
Co-authored-by: John Croudy <john.croudy@mcneel.com>
Co-authored-by: Lowell Walmsley <lowell@mcneel.com>
Co-authored-by: Nathan Letwory <nathan@mcneel.com>
Co-authored-by: piac <giulio@mcneel.com>
Co-authored-by: Steve Baer <steve@mcneel.com>
Co-authored-by: Tim Hemmelman <tim@mcneel.com>
2020-03-12 09:00:26 -07:00

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#include "opennurbs.h"
#if !defined(ON_COMPILING_OPENNURBS)
// This check is included in all opennurbs source .c and .cpp files to insure
// ON_COMPILING_OPENNURBS is defined when opennurbs source is compiled.
// When opennurbs source is being compiled, ON_COMPILING_OPENNURBS is defined
// and the opennurbs .h files alter what is declared and how it is declared.
#error ON_COMPILING_OPENNURBS must be defined when compiling opennurbs
#endif
#include "opennurbs_subd_data.h"
/* $NoKeywords: $ */
/*
//
// Copyright (c) 1993-2014 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>.
//
////////////////////////////////////////////////////////////////
*/
static bool Internal_WriteDouble3(
const double x[3],
ON_BinaryArchive& archive
)
{
for (;;)
{
if (!archive.WriteDouble(3, x))
break;
return true;
}
return ON_SUBD_RETURN_ERROR(false);
}
static bool Internal_ReadDouble3(
ON_BinaryArchive& archive,
double x[3]
)
{
for (;;)
{
if (!archive.ReadDouble(3, x))
break;
return true;
}
return ON_SUBD_RETURN_ERROR(false);
}
enum : unsigned char
{
ON_SubDComponentArchiveAnonymousChunkMark = 254U,
ON_SubDComponentArchiveAdditionEndMark = 255U
};
static bool Internal_ReadComponentAdditionSize(ON_BinaryArchive& archive, unsigned char valid_sz, unsigned char* sz)
{
if (archive.Archive3dmVersion() < 70)
{
return ON_SUBD_RETURN_ERROR(false);
}
if (0 == valid_sz)
return ON_SUBD_RETURN_ERROR(false);
if (false == archive.ReadChar(sz))
return ON_SUBD_RETURN_ERROR(false);
if ( 0 != *sz && valid_sz != *sz && ON_SubDComponentArchiveAdditionEndMark != *sz )
return ON_SUBD_RETURN_ERROR(false);
return true;
}
static bool Internal_WriteComponentAdditionSize(bool bHaveAddition, ON_BinaryArchive& archive, unsigned char sz)
{
if (archive.Archive3dmVersion() < 70)
{
return ON_SUBD_RETURN_ERROR(false);
}
if (0 == sz)
return ON_SUBD_RETURN_ERROR(false);
if (false == bHaveAddition)
sz = 0;
if (false == archive.WriteChar(sz))
return ON_SUBD_RETURN_ERROR(false);
return true;
}
static bool Internal_FinishReadingComponentAdditions(ON_BinaryArchive& archive)
{
if (archive.Archive3dmVersion() < 70)
{
return ON_SUBD_RETURN_ERROR(false);
}
unsigned char sz = 1;
if ( false == archive.ReadChar(&sz))
return ON_SUBD_RETURN_ERROR(false);
for (;;)
{
if (ON_SubDComponentArchiveAdditionEndMark == sz)
return true;
if (ON_SubDComponentArchiveAnonymousChunkMark == sz)
{
// skip an addition a future version added as an anonymous chunk
int v = 0;
if (false == archive.BeginRead3dmAnonymousChunk(&v))
break;
if (false == archive.EndRead3dmChunk())
break;
}
else if ( sz > 0 )
{
// skip an addition a future version added as a fixed number of bytes
// use archive.ReadByte(sz,buffer) instead of archive.SeekForward(sz) so CRC is properly calculated.
char buffer[256];
if (false == archive.ReadByte(sz,buffer))
break;
}
sz = 0;
if (false == archive.ReadChar(&sz))
break;
}
return ON_SUBD_RETURN_ERROR(false);
}
static bool Internal_FinishWritingComponentAdditions(ON_BinaryArchive& archive)
{
if (archive.Archive3dmVersion() < 70)
return ON_SUBD_RETURN_ERROR(false);
const unsigned char sz = ON_SubDComponentArchiveAdditionEndMark;
return archive.WriteChar(sz);
}
static bool WriteBase(
const ON_SubDComponentBase* base,
ON_BinaryArchive& archive
)
{
for (;;)
{
unsigned int archive_id = base->ArchiveId();
unsigned int id = base->m_id;
unsigned short level = (unsigned short)base->SubdivisionLevel();
if (!archive.WriteInt(archive_id))
break;
if (!archive.WriteInt(id))
break;
if (!archive.WriteShort(level))
break;
if (archive.Archive3dmVersion() < 70)
{
// version 6 3dm files
double P[3], V[3];
const bool bHaveP = base->GetSavedSubdivisionPoint(P);
const bool bHaveV = base->GetSubdivisionDisplacement(V);
unsigned char cP = bHaveP ? 4U : 0U;
if (!archive.WriteChar(cP))
break;
if (0 != cP)
{
if (!Internal_WriteDouble3(P, archive))
break;
}
unsigned char cV = bHaveV ? 4U : 0U;
if (!archive.WriteChar(cV))
break;
if (0 != cV)
{
if (!Internal_WriteDouble3(V, archive))
break;
}
return true;
}
// version 7 3dm files and later
// 24 byte displacement addition
double V[3];
const bool bWriteDisplacement = base->GetSubdivisionDisplacement(V);
if ( false == Internal_WriteComponentAdditionSize(bWriteDisplacement,archive,24) )
break;
if (bWriteDisplacement)
{
if (!archive.WriteDouble(3,V))
break;
}
// 4 byte group id addition
const bool bWriteGroupId = base->m_group_id > 0;
if (false == Internal_WriteComponentAdditionSize(bWriteGroupId, archive, 4))
break;
if (bWriteGroupId)
{
if (!archive.WriteInt(base->m_group_id))
break;
}
return Internal_FinishWritingComponentAdditions(archive);
}
return ON_SUBD_RETURN_ERROR(false);
}
static bool ReadBase(
ON_BinaryArchive& archive,
ON_SubDComponentBase& base
)
{
unsigned int archive_id = 0;
unsigned int id = 0;
unsigned short level = 0;
for (;;)
{
if (!archive.ReadInt(&archive_id))
break;
if (!archive.ReadInt(&id))
break;
if (!archive.ReadShort(&level))
break;
base.m_id = id;
base.SetArchiveId(archive_id);
base.SetSubdivisionLevel(level);
if (archive.Archive3dmVersion() < 70)
{
unsigned char cP = 0U;
unsigned char cV = 0U;
double P[3], V[3];
if (!archive.ReadChar(&cP))
break;
if (0 != cP)
{
if (!Internal_ReadDouble3(archive, P))
break;
}
if (!archive.ReadChar(&cV))
break;
if (0 != cV)
{
if (!Internal_ReadDouble3(archive, V))
break;
const unsigned int no_displacement_version = ON_VersionNumberConstruct(7, 0, 2019, 6, 12, 0);
const unsigned int archive_opennurbs_version = archive.ArchiveOpenNURBSVersion();
if (archive_opennurbs_version <= no_displacement_version)
{
cV = 0;
V[0] = 0.0;
V[1] = 0.0;
V[2] = 0.0;
}
}
if (4 == cP)
base.SetSavedSubdivisionPoint(P);
if (4 == cV)
base.SetSubdivisionDisplacement(V);
return true;
}
// read additions
unsigned char sz;
// 24 byte displacement addition
sz = 0;
if (false == Internal_ReadComponentAdditionSize(archive, 24, &sz))
break;
if (ON_SubDComponentArchiveAdditionEndMark == sz)
return true; // end of additions
if (0 != sz)
{
double V[3] = {};
if (!archive.ReadDouble(V))
break;
base.SetSubdivisionDisplacement(V);
}
// 4 byte group id addition
sz = 0;
if (false == Internal_ReadComponentAdditionSize(archive, 4, &sz))
break;
if (ON_SubDComponentArchiveAdditionEndMark == sz)
return true; // end of additions
if (0 != sz)
{
if (!archive.ReadInt(&base.m_group_id))
break;
}
return Internal_FinishReadingComponentAdditions(archive);
}
return ON_SUBD_RETURN_ERROR(false);
}
static bool WriteArchiveIdAndFlags(
unsigned int archive_id,
ON__UINT_PTR ptr_flags,
ON_BinaryArchive& archive
)
{
if (!archive.WriteInt(archive_id))
return ON_SUBD_RETURN_ERROR(false);
unsigned char flags = (unsigned char)ON_SUBD_COMPONENT_FLAGS(ptr_flags);
if (!archive.WriteChar(flags))
return ON_SUBD_RETURN_ERROR(false);
return true;
}
static bool ReadArchiveIdAndFlagsIntoComponentPtr(
ON_BinaryArchive& archive,
ON__UINT_PTR& element_ptr
)
{
element_ptr = 0;
unsigned int archive_id = 0;
if (!archive.ReadInt(&archive_id))
return ON_SUBD_RETURN_ERROR(false);
unsigned char flags = 0;
if (!archive.ReadChar(&flags))
return ON_SUBD_RETURN_ERROR(false);
element_ptr = archive_id;
element_ptr *= (ON_SUBD_COMPONENT_FLAGS_MASK+1);
element_ptr += (flags & ON_SUBD_COMPONENT_FLAGS_MASK);
return true;
}
static bool WriteSavedLimitPointList(
unsigned int vertex_face_count,
bool bHaveLimitPoint,
const ON_SubDSectorSurfacePoint& limit_point,
ON_BinaryArchive& archive
)
{
unsigned int limit_point_count = 0;
const ON_SubDSectorSurfacePoint* p;
if (bHaveLimitPoint)
{
for (p = &limit_point; nullptr != p && limit_point_count <= vertex_face_count; p = p->m_next_sector_limit_point)
{
if (!ON_IsValid(p->m_limitP[0]))
break;
if (limit_point_count > 0 && nullptr == p->m_sector_face)
break;
limit_point_count++;
}
if (limit_point_count > vertex_face_count || nullptr != p)
limit_point_count = 0;
if (limit_point_count > vertex_face_count)
limit_point_count = 0;
}
if (0 == limit_point_count)
bHaveLimitPoint = false;
for (;;)
{
unsigned char c = bHaveLimitPoint ? 4 : 0;
if (!archive.WriteChar(c))
break;
if (0 == c)
return true;
if (!archive.WriteInt(limit_point_count))
break;
p = &limit_point;
for (unsigned int i = 0; i < limit_point_count; i++, p = p->m_next_sector_limit_point )
{
if (!Internal_WriteDouble3(limit_point.m_limitP, archive))
break;
if (!Internal_WriteDouble3(limit_point.m_limitT1, archive))
break;
if (!Internal_WriteDouble3(limit_point.m_limitT2, archive))
break;
if (!Internal_WriteDouble3(limit_point.m_limitN, archive))
break;
if (!WriteArchiveIdAndFlags(limit_point.m_sector_face ? limit_point.m_sector_face->ArchiveId() : 0, 0, archive))
break;
}
return true;
}
return ON_SUBD_RETURN_ERROR(false);
}
static bool ReadSavedLimitPointList(
ON_BinaryArchive& archive,
unsigned int vertex_face_count,
ON_SimpleArray< ON_SubDSectorSurfacePoint > limit_points
)
{
limit_points.SetCount(0);
for (;;)
{
unsigned char c = 0;
if (!archive.ReadChar(&c))
break;
if ( 0 == c)
return true;
unsigned int limit_point_count = 0;
if (!archive.ReadInt(&limit_point_count))
break;
if ( 0 == limit_point_count )
break;
if (limit_point_count > vertex_face_count)
break;
limit_points.Reserve(limit_point_count);
for ( unsigned int i = 0; i < limit_point_count; i++ )
{
ON_SubDSectorSurfacePoint limit_point = ON_SubDSectorSurfacePoint::Unset;
if (!Internal_ReadDouble3(archive,limit_point.m_limitP))
break;
if (!Internal_ReadDouble3(archive,limit_point.m_limitT1))
break;
if (!Internal_ReadDouble3(archive,limit_point.m_limitT2))
break;
if (!Internal_ReadDouble3(archive,limit_point.m_limitN))
break;
ON_SubDFacePtr fptr = ON_SubDFacePtr::Null;
if (!ReadArchiveIdAndFlagsIntoComponentPtr(archive,fptr.m_ptr))
break;
limit_points.Append(limit_point);
}
if (limit_point_count != limit_points.UnsignedCount() )
break;
if (4 != c)
limit_points.SetCount(0);
return true;
}
return ON_SUBD_RETURN_ERROR(false);
}
static bool WriteVertexList(
unsigned short vertex_count,
const ON_SubDVertex*const* vertex,
ON_BinaryArchive& archive
)
{
for (;;)
{
ON_SubDArchiveIdMap::ValidateArrayCounts(vertex_count,vertex_count,vertex,0,nullptr);
if (!archive.WriteShort(vertex_count))
break;
if ( 0 == vertex_count )
return true;
const ON__UINT_PTR ptr_flags = 0; // for future use
unsigned short i = 0;
for (i = 0; i < vertex_count; i++)
{
const ON_SubDVertex* v = vertex[i];
if (!WriteArchiveIdAndFlags((nullptr != v) ? v->ArchiveId() : 0, ptr_flags, archive))
break;
}
if ( i < vertex_count )
break;
return true;
}
return ON_SUBD_RETURN_ERROR(false);
}
static bool ReadVertexList(
ON_BinaryArchive& archive,
unsigned short& vertex_count,
unsigned short vertex_capacity,
ON_SubDVertex* vertex[]
)
{
for (;;)
{
unsigned short archive_vertex_count = 0;
if (!archive.ReadShort(&archive_vertex_count))
break;
if (archive_vertex_count != vertex_count)
{
ON_ERROR("Archive vertex count != expected vertex count.");
if ( archive_vertex_count < vertex_count)
vertex_count = archive_vertex_count;
}
ON_SubDArchiveIdMap::ValidateArrayCounts(vertex_count,vertex_capacity,vertex,0,nullptr);
unsigned short i = 0;
for (i = 0; i < vertex_count; i++)
{
ON__UINT_PTR vptr = 0;
if (!ReadArchiveIdAndFlagsIntoComponentPtr(archive,vptr))
break;
vertex[i] = (ON_SubDVertex*)vptr;
}
if ( i < vertex_count )
break;
return true;
}
return ON_SUBD_RETURN_ERROR(false);
}
static bool WriteEdgePtrList(
unsigned short edge_count,
unsigned short edgeN_capacity,
const ON_SubDEdgePtr* edgeN,
unsigned short edgeX_capacity,
const ON_SubDEdgePtr* edgeX,
ON_BinaryArchive& archive
)
{
for (;;)
{
ON_SubDArchiveIdMap::ValidateArrayCounts(edge_count,edgeN_capacity,edgeN,edgeX_capacity,edgeX);
if (!archive.WriteShort(edge_count))
break;
if ( 0 == edge_count )
return true;
const ON_SubDEdgePtr* eptr = edgeN;
unsigned short i = 0;
for (i = 0; i < edge_count; i++, eptr++)
{
if ( i == edgeN_capacity)
eptr = edgeX;
const ON_SubDEdge* edge = ON_SUBD_EDGE_POINTER(eptr->m_ptr);
if (!WriteArchiveIdAndFlags((nullptr != edge) ? edge->ArchiveId() : 0,eptr->m_ptr,archive))
break;
}
if ( i < edge_count )
break;
return true;
}
return ON_SUBD_RETURN_ERROR(false);
}
static bool ReadEdgePtrList(
ON_BinaryArchive& archive,
unsigned short& edge_count,
unsigned short edgeN_capacity,
ON_SubDEdgePtr* edgeN,
unsigned short edgeX_capacity,
ON_SubDEdgePtr* edgeX
)
{
for (;;)
{
unsigned short archive_edge_count = 0;
if (!archive.ReadShort(&archive_edge_count))
break;
if (archive_edge_count != edge_count)
{
ON_ERROR("Archive edge count != expected edge count.");
if ( archive_edge_count < edge_count)
edge_count = archive_edge_count;
}
ON_SubDArchiveIdMap::ValidateArrayCounts(edge_count,edgeN_capacity,edgeN,edgeX_capacity,edgeX);
ON_SubDEdgePtr* eptr = edgeN;
unsigned short i = 0;
for (i = 0; i < edge_count; i++, eptr++)
{
if ( i == edgeN_capacity)
eptr = edgeX;
if (!ReadArchiveIdAndFlagsIntoComponentPtr(archive,eptr->m_ptr))
break;
}
if ( i < edge_count )
break;
return true;
}
return ON_SUBD_RETURN_ERROR(false);
}
static bool WriteFacePtrList(
unsigned short face_count,
size_t faceN_capacity,
const ON_SubDFacePtr* faceN,
unsigned short faceX_capacity,
const ON_SubDFacePtr* faceX,
ON_BinaryArchive& archive
)
{
for (;;)
{
ON_SubDArchiveIdMap::ValidateArrayCounts(face_count,faceN_capacity,faceN,faceX_capacity,faceX);
if (!archive.WriteShort(face_count))
break;
if ( 0 == face_count )
return true;
const ON_SubDFacePtr* fptr = faceN;
unsigned short i = 0;
for (i = 0; i < face_count; i++, fptr++)
{
if ( i == faceN_capacity)
fptr = faceX;
const ON_SubDFace* face = ON_SUBD_FACE_POINTER(fptr->m_ptr);
if (!WriteArchiveIdAndFlags((nullptr != face) ? face->ArchiveId() : 0,fptr->m_ptr,archive))
break;
}
if ( i < face_count )
break;
return true;
}
return ON_SUBD_RETURN_ERROR(false);
}
static bool ReadFacePtrList(
ON_BinaryArchive& archive,
unsigned short& face_count,
unsigned short faceN_capacity,
ON_SubDFacePtr* faceN,
unsigned short faceX_capacity,
ON_SubDFacePtr* faceX
)
{
for (;;)
{
unsigned short archive_face_count = 0;
if (!archive.ReadShort(&archive_face_count))
break;
if (archive_face_count != face_count)
{
ON_ERROR("Archive face count != expected face count.");
if ( archive_face_count < face_count)
face_count = archive_face_count;
}
ON_SubDArchiveIdMap::ValidateArrayCounts(face_count,faceN_capacity,faceN,faceX_capacity,faceX);
ON_SubDFacePtr* fptr = faceN;
unsigned short i = 0;
for (i = 0; i < face_count; i++, fptr++)
{
if ( i == faceN_capacity)
fptr = faceX;
if (!ReadArchiveIdAndFlagsIntoComponentPtr(archive,fptr->m_ptr))
break;
}
if ( i < face_count )
break;
return true;
}
return ON_SUBD_RETURN_ERROR(false);
}
bool ON_SubDVertex::Write(
ON_BinaryArchive& archive
) const
{
for (;;)
{
if (!WriteBase(this,archive))
break;
if (!archive.WriteChar((unsigned char)m_vertex_tag))
break;
//if (!archive.WriteChar((unsigned char)m_vertex_edge_order))
// break;
//if (!archive.WriteChar((unsigned char)m_vertex_facet_type))
// break;
if (!Internal_WriteDouble3(m_P,archive))
break;
if (!archive.WriteShort(m_edge_count))
break;
if (!archive.WriteShort(m_face_count))
break;
if (!WriteSavedLimitPointList(m_face_count, this->SurfacePointIsSet(), m_limit_point, archive))
break;
if (!WriteEdgePtrList(m_edge_count,m_edge_capacity,m_edges,0,nullptr, archive))
break;
if (!WriteFacePtrList(m_face_count,m_face_capacity,(const ON_SubDFacePtr*)m_faces,0,nullptr, archive))
break;
if (archive.Archive3dmVersion() < 70)
{
// mark end with a 0 byte
if (!archive.WriteChar((unsigned char)0U))
break;
return true;
}
return Internal_FinishWritingComponentAdditions(archive);
}
return ON_SUBD_RETURN_ERROR(false);
}
bool ON_SubDVertex::Read(
class ON_BinaryArchive& archive,
class ON_SubD& subd,
class ON_SubDVertex*& vertex
)
{
vertex = nullptr;
for (;;)
{
ON_SubDimple* subdimple = const_cast<ON_SubDimple*>(subd.SubDimple());
if ( nullptr == subdimple)
break;
ON_SubDComponentBase base = ON_SubDComponentBase::Unset;
unsigned char vertex_tag = 0;
//unsigned char vertex_edge_order = 0;
//unsigned char vertex_facet_type = 0;
double P[3];
unsigned short edge_count = 0;
unsigned short face_count = 0;
ON_SimpleArray<ON_SubDSectorSurfacePoint> limit_points;
if (!ReadBase(archive,base))
break;
if (!archive.ReadChar(&vertex_tag))
break;
//if (!archive.ReadChar(&vertex_edge_order))
// break;
//if (!archive.ReadChar(&vertex_facet_type))
// break;
if (!Internal_ReadDouble3(archive,P))
break;
if (!archive.ReadShort(&edge_count))
break;
if (!archive.ReadShort(&face_count))
break;
if (!ReadSavedLimitPointList(archive, face_count, limit_points))
break;
ON_SubDVertex* v = subdimple->AllocateVertex(
base.m_id, // serialization must preserve ON_SubDVertex.m_id
ON_SubD::VertexTagFromUnsigned(vertex_tag),
base.SubdivisionLevel(),
P,
edge_count,
face_count
);
if ( nullptr == v )
break;
v->ON_SubDComponentBase::operator=(base);
//v->m_vertex_edge_order = ON_SubD::VertexEdgeOrderFromUnsigned(vertex_edge_order);
//v->m_vertex_facet_type = ON_SubD::VertexFacetTypeFromUnsigned(vertex_facet_type);
if (!ReadEdgePtrList(archive,edge_count,v->m_edge_capacity,v->m_edges,0,nullptr))
break;
v->m_edge_count = edge_count;
if (!ReadFacePtrList(archive,face_count,v->m_face_capacity,(ON_SubDFacePtr*)v->m_faces,0,nullptr))
break;
v->m_face_count = face_count;
for (unsigned int i = 0; i < limit_points.UnsignedCount(); i++)
{
ON_SubDSectorSurfacePoint limit_point = limit_points[i];
limit_point.m_next_sector_limit_point = (const ON_SubDSectorSurfacePoint*)1U; // skips checks
if (false == v->SetSavedSurfacePoint( true, limit_point))
{
v->ClearSavedSurfacePoints();
break;
}
}
vertex = v;
if (archive.Archive3dmVersion() < 70)
{
unsigned char sz = 1;
if (!archive.ReadChar(&sz) || 0 != sz)
break;
return true;
}
// read additions
return Internal_FinishReadingComponentAdditions(archive);
}
return ON_SUBD_RETURN_ERROR(false);
}
bool ON_SubDEdge::Write(
ON_BinaryArchive& archive
) const
{
for (;;)
{
if (!WriteBase(this,archive))
break;
if (!archive.WriteChar((unsigned char)m_edge_tag))
break;
if (!archive.WriteShort(m_face_count))
break;
if (!archive.WriteDouble(2,m_sector_coefficient))
break;
if (!archive.WriteDouble(m_sharpness))
break;
if (!WriteVertexList(2, m_vertex, archive))
break;
if (!WriteFacePtrList(m_face_count,sizeof(m_face2)/sizeof(m_face2[0]),m_face2,m_facex_capacity,m_facex, archive))
break;
if (archive.Archive3dmVersion() < 70)
{
// mark end with a 0 byte
if (!archive.WriteChar((unsigned char)0U))
break;
return true;
}
return Internal_FinishWritingComponentAdditions(archive);
}
return ON_SUBD_RETURN_ERROR(false);
}
bool ON_SubDEdge::Read(
class ON_BinaryArchive& archive,
class ON_SubD& subd,
class ON_SubDEdge*& edge
)
{
edge = nullptr;
for (;;)
{
ON_SubDimple* subdimple = const_cast<ON_SubDimple*>(subd.SubDimple());
if ( nullptr == subdimple)
break;
ON_SubDComponentBase base = ON_SubDComponentBase::Unset;
unsigned char edge_tag = 0;
unsigned short face_count = 0;
double sector_weight[2] = { 0 };
double sharpness = 0.0;
if (!ReadBase(archive,base))
break;
if (!archive.ReadChar(&edge_tag))
break;
if (!archive.ReadShort(&face_count))
break;
if (!archive.ReadDouble(2,sector_weight))
break;
if (!archive.ReadDouble(&sharpness))
break;
ON_SubDVertex* v[2] = { 0 };
unsigned short vertex_count = 2;
if (!ReadVertexList(archive, vertex_count, 2, v))
break;
ON_SubDEdge* e = subdimple->AllocateEdge(
base.m_id, // serialization must preserve ON_SubDEdge.m_id
ON_SubD::EdgeTagFromUnsigned(edge_tag),
base.SubdivisionLevel(),
face_count
);
if ( nullptr == e )
break;
e->ON_SubDComponentBase::operator=(base);
for ( unsigned short evi = 0; evi < 2 && evi < vertex_count; evi++ )
e->m_vertex[evi] = v[evi];
e->m_sector_coefficient[0] = sector_weight[0];
e->m_sector_coefficient[1] = sector_weight[1];
e->m_sharpness = sharpness;
if (!ReadFacePtrList(archive,face_count,sizeof(e->m_face2)/sizeof(e->m_face2[0]),e->m_face2,e->m_facex_capacity,e->m_facex))
break;
e->m_face_count = face_count;
edge = e;
if (archive.Archive3dmVersion() < 70)
{
unsigned char sz;
if (false == archive.ReadChar(&sz) || 0 != sz)
break;
return true;
}
return Internal_FinishReadingComponentAdditions(archive);
}
return ON_SUBD_RETURN_ERROR(false);
}
bool ON_SubDFace::Write(
ON_BinaryArchive& archive
) const
{
for (;;)
{
if (!WriteBase(this,archive))
break;
if (!archive.WriteInt(m_zero_face_id))
break;
if (!archive.WriteInt(m_parent_face_id))
break;
if (!archive.WriteShort(m_edge_count))
break;
if (!WriteEdgePtrList(m_edge_count,sizeof(m_edge4)/sizeof(m_edge4[0]),m_edge4,m_edgex_capacity,m_edgex, archive))
break;
if (archive.Archive3dmVersion() < 70)
{
unsigned char sz = 0;
if (!archive.WriteChar(sz))
break;
return true;
}
// write 34 byte texture domain
const bool bWriteTextureDomain = TextureDomainIsSet();
if (false == Internal_WriteComponentAdditionSize(bWriteTextureDomain, archive, 34))
break;
if (bWriteTextureDomain)
{
const unsigned char domain_type = static_cast<unsigned char>(TextureDomainType());
if (!archive.WriteChar(domain_type))
break;
const unsigned packing_rot = TextureDomainRotationDegrees();
const unsigned char packing_rot_dex = (unsigned char)(packing_rot/90U);
if (!archive.WriteChar(packing_rot_dex))
break;
const ON_2dPoint texture_domain_origin = TextureDomainOrigin();
if (!archive.WriteDouble(2, &texture_domain_origin.x))
break;
const ON_2dVector texture_domain_delta = TextureDomainDelta();
if (!archive.WriteDouble(2, &texture_domain_delta.x))
break;
}
//////if ( ON::Version() >= ON_VersionNumberConstruct(7, 0, 2020, 2, 18, 0) )
{
////// https://mcneel.myjetbrains.com/youtrack/issue/RH-56820
////// Today is Feb 3, 2020.
////// We need to give Rhino 7 WIP users until Feb 18, 2020 to get automatically
////// updated before we can save the material index in 3dm archives.
////// This is because there was a bug in Internal_FinishReadingComponentAdditions()
////// that failed to keep the chunk CRCs up to date when older versions of Rhino
////// skipped over newer information.
////// This CRC bug was fixed Feb 3, 2020 and made available to customers Feb 4, 2020.
////// On or after Feb 18, 2020, this comment and the if ( ON::Version() >= ON_VersionNumberConstruct(7, 0, 2020, 2, 18, 0) )....
////// check can be removed.
//
// Done Feb 20, 2020. The comment can be deleted in March 2020 or later because by then this code will have been well tested.
const int material_channel_index = MaterialChannelIndex();
const bool bWriteMaterialChannelIndex = (material_channel_index > 0 && material_channel_index <= ON_Material::MaximumMaterialChannelIndex);
if (false == Internal_WriteComponentAdditionSize(bWriteMaterialChannelIndex, archive, 4))
break;
if (bWriteMaterialChannelIndex)
{
if (!archive.WriteInt(material_channel_index))
break;
}
}
return Internal_FinishWritingComponentAdditions(archive);
}
return ON_SUBD_RETURN_ERROR(false);
}
bool ON_SubDFace::Read(
class ON_BinaryArchive& archive,
class ON_SubD& subd,
class ON_SubDFace*& face
)
{
face = nullptr;
for (;;)
{
ON_SubDimple* subdimple = const_cast<ON_SubDimple*>(subd.SubDimple());
if ( nullptr == subdimple)
break;
ON_SubDComponentBase base = ON_SubDComponentBase::Unset;
unsigned int zero_face_id = 0;
unsigned int parent_face_id = 0;
unsigned short edge_count = 0;
if (!ReadBase(archive,base))
break;
if (!archive.ReadInt(&zero_face_id))
break;
if (!archive.ReadInt(&parent_face_id))
break;
if (!archive.ReadShort(&edge_count))
break;
ON_SubDFace* f = subdimple->AllocateFace(
base.m_id, // serialzation must preserve ON_SubDFace.m_id
base.SubdivisionLevel(),
edge_count
);
if ( nullptr == f )
break;
f->ON_SubDComponentBase::operator=(base);
f->m_zero_face_id = zero_face_id;
f->m_parent_face_id = parent_face_id;
if (!ReadEdgePtrList(archive,edge_count,sizeof(f->m_edge4)/sizeof(f->m_edge4[0]),f->m_edge4,f->m_edgex_capacity,f->m_edgex))
break;
f->m_edge_count = edge_count;
face = f;
if (archive.Archive3dmVersion() < 70)
{
unsigned char sz;
if (false == archive.ReadChar(&sz) || 0 != sz)
break;
return true;
}
// read additions
unsigned char sz;
sz = 0;
if (false == Internal_ReadComponentAdditionSize(archive, 34, &sz))
break;
if (ON_SubDComponentArchiveAdditionEndMark == sz)
return true; // end of additions
if ( 0 != sz)
{
// 34 bytes of texture domain information
unsigned char domain_type;
if (!archive.ReadChar(&domain_type))
break;
unsigned char packing_rot_dex = 0;
if (!archive.ReadChar(&packing_rot_dex))
break;
const unsigned packing_rot = ((unsigned int)packing_rot_dex) * 90U;
ON_2dPoint texture_domain_origin(ON_2dPoint::Origin);
if (!archive.ReadDouble(2, &texture_domain_origin.x))
break;
ON_2dVector texture_domain_delta(ON_2dVector::ZeroVector);
if (!archive.ReadDouble(2, &texture_domain_delta.x))
break;
f->SetTextureDomain(ON_SubD::TextureDomainTypeFromUnsigned(domain_type), texture_domain_origin, texture_domain_delta, packing_rot);
}
sz = 0;
if (false == Internal_ReadComponentAdditionSize(archive, 4, &sz))
break;
if (ON_SubDComponentArchiveAdditionEndMark == sz)
return true; // end of additions
if (0 != sz)
{
// 4 bytes of material channel index
int material_channel_index = 0;
if (false == archive.ReadInt(&material_channel_index))
break;
f->SetMaterialChannelIndex(material_channel_index);
}
return Internal_FinishReadingComponentAdditions(archive);
}
return ON_SUBD_RETURN_ERROR(false);
}
unsigned int ON_SubDLevel::SetArchiveId(
const ON_SubDimple& subdimple,
unsigned int archive_id_partition[4],
bool bLevelLinkedListIncreasingId[3]
) const
{
unsigned int archive_id = 1;
//archive_id_partition[0] = 0;
//archive_id_partition[1] = 0;
//archive_id_partition[2] = 0;
//archive_id_partition[3] = 0;
const ON_SubDComponentPtr::Type component_type[3] = {
ON_SubDComponentPtr::Type::Vertex,
ON_SubDComponentPtr::Type::Edge,
ON_SubDComponentPtr::Type::Face
};
const ON_SubDComponentBaseLink* first_link[3] = {
(const ON_SubDComponentBaseLink*)m_vertex[0],
(const ON_SubDComponentBaseLink*)m_edge[0],
(const ON_SubDComponentBaseLink*)m_face[0]
};
for (unsigned int listdex = 0; listdex < 3; listdex++)
{
bLevelLinkedListIncreasingId[listdex]
= nullptr != first_link[listdex]
&& first_link[listdex]->m_id > 0U;
unsigned int prev_id = 0;
archive_id_partition[listdex] = archive_id;
unsigned int linked_list_count = 0;
for (const ON_SubDComponentBaseLink* clink = first_link[listdex]; nullptr != clink; clink = clink->m_next)
{
++linked_list_count;
if (prev_id < clink->m_id)
{
prev_id = clink->m_id;
clink->SetArchiveId(archive_id++);
continue;
}
// the for(..) scope we are currently in is exited below.
bLevelLinkedListIncreasingId[listdex] = false;
// m_id values are not increasing in the linked list.
// This happens when the subd is edited and components are deleted
// and then added back later.
// Finish counting components in the linked list.
for (clink = clink->m_next; nullptr != clink; clink = clink->m_next)
++linked_list_count;
// Now iteratate the fixed size pool (which always iterates in increasing id order),
// skip components not on this level, and set archive id of the ones on this level.
unsigned int cidit_level_count = 0;
archive_id = archive_id_partition[listdex];
ON_SubDComponentIdIterator cidit;
subdimple.InitializeComponentIdIterator(component_type[listdex],cidit);
const unsigned level_index = this->m_level_index;
prev_id = 0;
for (const ON_SubDComponentBase* c = cidit.FirstComponent(); nullptr != c; c = cidit.NextComponent())
{
if (prev_id >= c->m_id)
{
// This is a serious error!
// Contine because this allows us to save something do the disk in these bad cases.
ON_SUBD_ERROR("The m_id values of the active components in the fixed size pool are corrupt.");
}
else
{
prev_id = c->m_id;
}
if (level_index != c->SubdivisionLevel())
continue;
++cidit_level_count;
c->SetArchiveId(archive_id++);
}
if (cidit_level_count != linked_list_count)
{
// This is a serious error!
// Contine because this allows us to save something do the disk in these bad cases.
ON_SUBD_ERROR("The m_level values of the active components in the fixed size pool are corrupt.");
}
break;
}
}
archive_id_partition[3] = archive_id;
return archive_id-1;
}
void ON_SubDLevel::ClearArchiveId() const
{
// archive ids can be cleared in any order.
for (const ON_SubDVertex* v = m_vertex[0]; nullptr != v; v = v->m_next_vertex)
v->SetArchiveId(0);
for (const ON_SubDEdge* e = m_edge[0]; nullptr != e; e = e->m_next_edge)
e->SetArchiveId(0);
for (const ON_SubDFace* f = m_face[0]; nullptr != f; f = f->m_next_face)
f->SetArchiveId(0);
}
bool ON_SubDLevel::Write(
const ON_SubDimple& subdimple,
ON_BinaryArchive& archive
) const
{
if (!archive.BeginWrite3dmChunk(TCODE_ANONYMOUS_CHUNK,1,1))
return ON_SUBD_RETURN_ERROR(false);
bool rc = false;
for (;;)
{
if (!archive.WriteShort((unsigned short)m_level_index))
break;
// from early days when there was a possibility of different types of subdivision algorithm
// 4,4,4 means catmull clark quad
if (!archive.WriteChar((unsigned char)4))
break;
if (!archive.WriteChar((unsigned char)4))
break;
if (!archive.WriteChar((unsigned char)4))
break;
ON_BoundingBox bbox = m_aggregates.m_bDirtyBoundingBox ? ON_BoundingBox::EmptyBoundingBox : m_aggregates.m_controlnet_bbox;
if (!archive.WriteDouble(3,bbox[0]))
break;
if (!archive.WriteDouble(3,bbox[1]))
break;
unsigned int archive_id_partition[4] = {};
bool bLevelLinkedListIncreasingId[3] = {};
SetArchiveId(subdimple, archive_id_partition, bLevelLinkedListIncreasingId);
if (!archive.WriteInt(4,archive_id_partition))
break;
const ON_SubDVertex* v = nullptr;
const ON_SubDEdge* e = nullptr;
const ON_SubDFace* f = nullptr;
// Have to use idit because subd editing (deleting and then adding) can leave the level's linked lists
// with components in an order that is not increasing in id and it is critical that the next three for
// loops iterate the level's components in order of increasing id.
ON_SubDLevelComponentIdIterator idit;
// must iterate vertices in order of increasing id
idit.Initialize(bLevelLinkedListIncreasingId[0], ON_SubDComponentPtr::Type::Vertex, subdimple, *this);
for (v = idit.FirstVertex(); nullptr != v; v = idit.NextVertex())
{
if( !v->Write(archive) )
break;
}
if ( nullptr != v )
break;
// must iterate edges in order of increasing id
idit.Initialize(bLevelLinkedListIncreasingId[1], ON_SubDComponentPtr::Type::Edge, subdimple, *this);
for (e = idit.FirstEdge(); nullptr != e; e = idit.NextEdge())
{
if( !e->Write(archive) )
break;
}
if ( nullptr != e )
break;
// must iterate faces in order of increasing id
idit.Initialize(bLevelLinkedListIncreasingId[2], ON_SubDComponentPtr::Type::Face, subdimple, *this);
for (f = idit.FirstFace(); nullptr != f; f = idit.NextFace())
{
if( !f->Write(archive) )
break;
}
if ( nullptr != f )
break;
// chunk 1.1 has meshes
unsigned char c = 0;
if (archive.Save3dmRenderMesh(ON::object_type::subd_object) || archive.Save3dmAnalysisMesh(ON::object_type::subd_object))
{
// no reason to save the m_control_net_mesh
if (false == m_surface_mesh.IsEmpty())
{
c = 0;
// c = 1; TODO change to c = 1 when ON_SubDMesh::Write()/Read() actually work
}
}
if (!archive.WriteChar(c))
break;
if (1 == c)
{
//if (!m_limit_mesh.Write(archive))
// break;
}
rc = true;
break;
}
if (!archive.EndWrite3dmChunk())
rc = false;
ClearArchiveId();
if (rc)
return rc;
return ON_SUBD_RETURN_ERROR(false);
}
bool ON_SubDLevel::Read(
ON_BinaryArchive& archive,
class ON_SubDArchiveIdMap& element_list,
ON_SubD& subd
)
{
if ( false == element_list.Reset())
return ON_SUBD_RETURN_ERROR(false);
int major_version = 1;
int minor_version = 0;
if (!archive.BeginRead3dmChunk(TCODE_ANONYMOUS_CHUNK,&major_version,&minor_version))
return ON_SUBD_RETURN_ERROR(false);
bool rc = false;
for (;;)
{
if ( 1 != major_version)
break;
unsigned short level_index = 0;
if (!archive.ReadShort(&level_index))
break;
m_level_index = level_index;
// from early days when there was a possibility of different types of subdivision algorithm
unsigned char ignored_c[3] = {};
if (!archive.ReadChar(&ignored_c[0]))
break;
if (!archive.ReadChar(&ignored_c[1]))
break;
if (!archive.ReadChar(&ignored_c[2]))
break;
ON_BoundingBox controlnet_bbox;
if (!archive.ReadDouble(3, controlnet_bbox[0]))
break;
if (!archive.ReadDouble(3, controlnet_bbox[1]))
break;
if (controlnet_bbox.IsValid())
{
m_aggregates.m_bDirtyBoundingBox = false;
m_aggregates.m_controlnet_bbox = controlnet_bbox;
}
else
{
m_aggregates.m_bDirtyBoundingBox = true;
}
if (!archive.ReadInt(4,element_list.m_archive_id_partition))
break;
unsigned int archive_id = 0;
for (archive_id = element_list.m_archive_id_partition[0]; archive_id < element_list.m_archive_id_partition[1]; archive_id++ )
{
ON_SubDVertex* v = nullptr;
if ( false == ON_SubDVertex::Read(archive, subd, v) )
break;
if ( nullptr == v )
break;
if (archive_id != v->ArchiveId())
break;
if ( !element_list.Add(v) )
break;
AddVertex(v);
}
if ( archive_id != element_list.m_archive_id_partition[1] )
break;
for (archive_id = element_list.m_archive_id_partition[1]; archive_id < element_list.m_archive_id_partition[2]; archive_id++ )
{
ON_SubDEdge* e = nullptr;
if ( false == ON_SubDEdge::Read(archive, subd, e) )
break;
if ( nullptr == e )
break;
if (archive_id != e->ArchiveId())
break;
if ( !element_list.Add(e) )
break;
AddEdge(e);
}
if ( archive_id != element_list.m_archive_id_partition[2] )
break;
for (archive_id = element_list.m_archive_id_partition[2]; archive_id < element_list.m_archive_id_partition[3]; archive_id++ )
{
ON_SubDFace* f = nullptr;
if ( false == ON_SubDFace::Read(archive, subd, f) )
break;
if ( nullptr == f )
break;
if (archive_id != f->ArchiveId())
break;
if ( !element_list.Add(f) )
break;
AddFace(f);
}
if ( archive_id != element_list.m_archive_id_partition[3] )
break;
if (archive_id != element_list.Count())
break;
// Convert archive_id references to runtime pointers.
archive_id = element_list.ConvertArchiveIdsToRuntimePointers();
if ( archive_id <= 0 )
break;
if (0 == minor_version )
break;
unsigned char c = 0;
if (!archive.ReadChar(&c))
break;
if (1 == c)
{
//if (!m_limit_mesh.Read(archive))
// break;
}
rc = true;
break;
}
ClearArchiveId();
if (!archive.EndRead3dmChunk())
rc = false;
if (rc)
return rc;
return ON_SUBD_RETURN_ERROR(false);
}
bool ON_SubDimple::Write(
ON_BinaryArchive& archive
) const
{
const_cast< ON_SubDHeap* >(&m_heap)->ClearArchiveId();
const int minor_version = (archive.Archive3dmVersion() < 70) ? 0 : 3;
if ( !archive.BeginWrite3dmChunk(TCODE_ANONYMOUS_CHUNK, 1, minor_version) )
return ON_SUBD_RETURN_ERROR(false);
bool rc = false;
for (;;)
{
unsigned int level_count = m_levels.UnsignedCount();
unsigned int level_index;
for (level_index = 0; level_index < level_count; level_index++)
{
if (nullptr == m_levels[level_index])
{
level_count = level_index;
break;
}
}
if (!archive.WriteInt(level_count))
break;
if (!archive.WriteInt(MaximumVertexId()))
break;
if (!archive.WriteInt(MaximumEdgeId()))
break;
if (!archive.WriteInt(MaximumFaceId()))
break;
// a global bounding box was saved before May 2015.
// Something has to be here so file IO is not broken.
if (!archive.WriteBoundingBox(ON_BoundingBox::EmptyBoundingBox))
break;
for (level_index = 0; level_index < level_count; level_index++)
{
if ( !m_levels[level_index]->Write(*this,archive) )
break;
}
if (level_index < level_count)
break;
if (minor_version <= 0)
{
rc = true;
break;
}
// minor version = 1 addtions
const unsigned char texture_domain_type = static_cast<unsigned char>(TextureDomainType());
if (false == archive.WriteChar(texture_domain_type))
break;
if (false == m_texture_mapping_tag.Write(archive))
break;
// minor version = 2 addtions
if (false == m_symmetry.Write(archive))
break;
// runtime content number used to compare with the on on m_symmetry
if (false == archive.WriteBigInt(ContentSerialNumber()))
break;
rc = true;
break;
}
if (!archive.EndWrite3dmChunk())
rc = false;
if (rc)
return true;
return ON_SUBD_RETURN_ERROR(false);
}
bool ON_SubDimple::Read(
ON_BinaryArchive& archive,
class ON_SubD& subd
)
{
m_heap.Clear();
int major_version = 0;
int minor_version = 0;
if ( !archive.BeginRead3dmChunk(TCODE_ANONYMOUS_CHUNK, &major_version, &minor_version) )
return ON_SUBD_RETURN_ERROR(false);
bool rc = false;
// Code before Feb 10, 2020 cared about these values
unsigned int obsolete_archive_max_vertex_id = 0;
unsigned int obsolete_archive_max_edge_id = 0;
unsigned int obsolete_archive_max_face_id = 0;
ON__UINT64 saved_content_serial_number = 0;
for (;;)
{
if (1 != major_version)
break;
unsigned int i;
if (!archive.ReadInt(&i))
break;
const unsigned int level_count = i;
if (!archive.ReadInt(&obsolete_archive_max_vertex_id))
break;
if (!archive.ReadInt(&obsolete_archive_max_edge_id))
break;
if (!archive.ReadInt(&obsolete_archive_max_face_id))
break;
ON_BoundingBox bbox_unsued_after_May_2015;
if (!archive.ReadBoundingBox(bbox_unsued_after_May_2015))
break;
ON_SubDArchiveIdMap element_list;
unsigned int level_index;
for (level_index = 0; level_index < level_count; level_index++)
{
ON_SubDLevel* level = SubDLevel(level_index,true);
if ( nullptr == level )
break;
if (false == level->Read(archive, element_list, subd ) )
break;
m_active_level = level;
}
if ( level_index != level_count)
break;
if (minor_version >= 1)
{
unsigned char texture_domain_type = static_cast<unsigned char>(ON_SubDTextureDomainType::Unset);
if (false == archive.ReadChar(&texture_domain_type))
break;
m_texture_domain_type = ON_SubD::TextureDomainTypeFromUnsigned(texture_domain_type);
if (false == m_texture_mapping_tag.Read(archive))
break;
if (minor_version >= 2)
{
if (false == m_symmetry.Read(archive))
break;
if (minor_version >= 3)
{
if (false == archive.ReadBigInt(&saved_content_serial_number))
break;
}
}
}
rc = true;
break;
}
if (!archive.EndRead3dmChunk())
rc = false;
// Heap id validation. Always an error if max_heap_..._id > m_max_..._id.
if (false == m_heap.IsValid(false,nullptr))
{
ON_SUBD_ERROR("m_heap.IsValid() is false.");
m_heap.ResetIds(); // breaks component id references, but this is a serious error.
}
const bool bSetSymmetricObjectContentSerialNumber
= saved_content_serial_number > 0
&& m_symmetry.IsSet()
&& saved_content_serial_number == m_symmetry.SymmetricObjectContentSerialNumber()
;
ChangeContentSerialNumber(false);
if ( bSetSymmetricObjectContentSerialNumber )
m_symmetry.SetSymmetricObjectContentSerialNumber(ContentSerialNumber());
else
m_symmetry.ClearSymmetricObjectContentSerialNumber();
if (rc)
return true;
return ON_SUBD_RETURN_ERROR(false);
}
//virtual
bool ON_SubD::Write(
ON_BinaryArchive& archive
) const // override
{
for (;;)
{
const ON_SubDimple* subdimple = SubDimple();
unsigned char c = (nullptr == subdimple) ? 0 : 1;
if (!archive.WriteChar(c))
break;
if (nullptr != subdimple)
{
if (!subdimple->Write(archive))
break;
}
return true;
}
return ON_SUBD_RETURN_ERROR(false);
}
//virtual
bool ON_SubD::Read(
ON_BinaryArchive& archive
) // override
{
Destroy();
for (;;)
{
unsigned char c = 0;
if (!archive.ReadChar(&c))
break;
if (1 == c)
{
ON_SubDimple* subdimple = SubDimple(true);
if ( nullptr == subdimple)
break;
if (false == subdimple->Read(archive,*this))
{
Destroy();
break;
}
}
else if ( 0 != c )
break;
return true;
}
return ON_SUBD_RETURN_ERROR(false);
}
/////////////////////////////////////////////////////////////////////////////////////////
//
// ON_SubDMeshProxyUserData
//
ON_OBJECT_IMPLEMENT(ON_SubDMeshProxyUserData,ON_UserData,"2868B9CD-28AE-4EA7-8073-BD390B3E97C8");
const bool ON_SubDMeshProxyUserData::Internal_MeshHasFaces(const ON_Mesh* mesh)
{
for (;;)
{
if (nullptr == mesh)
break;
if (mesh->m_F.UnsignedCount() <= 0)
break;
if (mesh->m_V.UnsignedCount() <= 2)
break;
return true;
}
return false;
}
const ON_SHA1_Hash ON_SubDMeshProxyUserData::Internal_FaceSHA1(const ON_Mesh* mesh)
{
if (false == ON_SubDMeshProxyUserData::Internal_MeshHasFaces(mesh))
return ON_SHA1_Hash::EmptyContentHash;
ON_SHA1 sha1;
const ON_MeshFace* f = mesh->m_F.Array();
sha1.AccumulateBytes(f, mesh->m_F.UnsignedCount() * sizeof(*f));
return sha1.Hash();
}
const ON_SHA1_Hash ON_SubDMeshProxyUserData::Internal_VertexSHA1(const ON_Mesh* mesh)
{
if (false == ON_SubDMeshProxyUserData::Internal_MeshHasFaces(mesh))
return ON_SHA1_Hash::EmptyContentHash;
ON_SHA1 sha1;
const ON_3fPoint* v = mesh->m_V.Array();
sha1.AccumulateBytes(v, mesh->m_V.UnsignedCount() * sizeof(*v));
return sha1.Hash();
}
void ON_SubDMeshProxyUserData::Internal_CopyFrom(const ON_SubDMeshProxyUserData& src)
{
if ( src.IsValid() )
{
m_subd = new ON_SubD(*src.m_subd);
m_mesh_face_count = src.m_mesh_face_count;
m_mesh_vertex_count = src.m_mesh_vertex_count;
m_mesh_face_array_sha1 = src.m_mesh_face_array_sha1;
m_mesh_vertex_array_sha1 = src.m_mesh_vertex_array_sha1;
}
}
void ON_SubDMeshProxyUserData::Internal_Destroy()
{
if (nullptr != m_subd)
{
delete m_subd;
m_subd = nullptr;
}
m_mesh_face_count = 0;
m_mesh_vertex_count = 0;
m_mesh_face_array_sha1 = ON_SHA1_Hash::EmptyContentHash;
m_mesh_vertex_array_sha1 = ON_SHA1_Hash::EmptyContentHash;
}
const ON_SubDDisplayParameters ON_SubDMeshProxyUserData::MeshProxyDisplayParameters()
{
return ON_SubDDisplayParameters::CreateFromDisplayDensity(4);
}
ON_Mesh* ON_SubDMeshProxyUserData::MeshProxyFromSubD(
const ON_SubD* subd
)
{
ON_Mesh* mesh = nullptr;
ON_SubD* subd_copy = nullptr;
for (;;)
{
if (nullptr == subd)
break;
subd_copy = new ON_SubD(*subd);
if (nullptr == subd_copy)
break;
mesh = subd_copy->GetControlNetMesh(nullptr);
if (false == ON_SubDMeshProxyUserData::Internal_MeshHasFaces(mesh))
break;
ON_SubDMeshProxyUserData* ud = new ON_SubDMeshProxyUserData();
ud->m_subd = subd_copy;
ud->m_mesh_face_count = mesh->FaceUnsignedCount();
ud->m_mesh_vertex_count = mesh->VertexUnsignedCount();
ud->m_mesh_face_array_sha1 = ON_SubDMeshProxyUserData::Internal_FaceSHA1(mesh);
ud->m_mesh_vertex_array_sha1 = ON_SubDMeshProxyUserData::Internal_VertexSHA1(mesh);
if (false == mesh->AttachUserData(ud))
{
ud->m_subd = nullptr;
delete ud;
break;
}
return mesh;
}
if (nullptr != mesh)
delete mesh;
if (nullptr != subd_copy)
delete subd_copy;
return nullptr;
}
ON_SubD* ON_SubDMeshProxyUserData::SubDFromMeshProxy(
const ON_Mesh* mesh
)
{
ON_SubD* subd = nullptr;
ON_SubDMeshProxyUserData* ud = nullptr;
for (;;)
{
if (nullptr == mesh)
break;
const ON_UUID udid = ON_CLASS_ID(ON_SubDMeshProxyUserData);
ud = ON_SubDMeshProxyUserData::Cast(mesh->GetUserData(udid));
if (nullptr == ud)
break;
if (false == ud->IsValid())
break;
if (false == ud->ParentMeshValid())
break;
subd = ud->m_subd;
ud->m_subd = nullptr;
}
if (nullptr != ud)
delete ud;
return subd;
}
bool ON_SubDMeshProxyUserData::IsSubDMeshProxy(
const ON_Mesh* mesh
)
{
return false;
}
ON_SubDMeshProxyUserData::ON_SubDMeshProxyUserData()
{
m_userdata_uuid = ON_CLASS_ID(ON_SubDMeshProxyUserData);
m_application_uuid = ON_opennurbs6_id; // opennurbs.dll reads/writes this userdata
// The id must be the version 4 id because
// V5 SaveAs V4 needs to work.
m_userdata_copycount = 1;
}
ON_SubDMeshProxyUserData::~ON_SubDMeshProxyUserData()
{
Internal_Destroy();
}
ON_SubDMeshProxyUserData::ON_SubDMeshProxyUserData(const ON_SubDMeshProxyUserData& src)
: ON_UserData(src)
{
Internal_CopyFrom(src);
}
ON_SubDMeshProxyUserData& ON_SubDMeshProxyUserData::operator=(const ON_SubDMeshProxyUserData& src)
{
if (this != &src)
{
Internal_Destroy();
Internal_CopyFrom(src);
}
return *this;
}
bool ON_SubDMeshProxyUserData::Write(ON_BinaryArchive& archive) const
{
const int chunk_version = 1;
if ( false == archive.BeginWrite3dmAnonymousChunk(chunk_version) )
return false;
bool rc = false;
for (;;)
{
const bool bIsValid = IsValid();
if (!archive.WriteBool(bIsValid))
break;
if (false == bIsValid)
{
rc = true;
break;
}
if (!m_subd->Write(archive))
break;
if (!archive.WriteInt(m_mesh_face_count))
break;
if (!archive.WriteInt(m_mesh_vertex_count))
break;
if (!m_mesh_face_array_sha1.Write(archive))
break;
if (!m_mesh_vertex_array_sha1.Write(archive))
break;
rc = true;
break;
}
if (!archive.EndWrite3dmChunk())
rc = false;
return rc;
}
bool ON_SubDMeshProxyUserData::Read(ON_BinaryArchive& archive)
{
Internal_Destroy();
int chunk_version = 0;
if ( false == archive.BeginRead3dmAnonymousChunk(&chunk_version) )
return false;
bool rc = false;
for (;;)
{
if (chunk_version <= 0)
break;
bool bIsValid = false;
if (!archive.ReadBool(&bIsValid))
break;
if (false == bIsValid)
{
rc = true;
break;
}
m_subd = new ON_SubD();
if (!m_subd->Read(archive))
break;
if (!archive.ReadInt(&m_mesh_face_count))
break;
if (!archive.ReadInt(&m_mesh_vertex_count))
break;
if (!m_mesh_face_array_sha1.Read(archive))
break;
if (!m_mesh_vertex_array_sha1.Read(archive))
break;
rc = true;
break;
}
if (!archive.EndRead3dmChunk())
rc = false;
if (!rc || !IsValid())
Internal_Destroy();
return rc;
}
bool ON_SubDMeshProxyUserData::ParentMeshValid() const
{
for (;;)
{
if (!IsValid())
break;
const ON_Mesh* mesh = ON_Mesh::Cast(Owner());
if (false == ON_SubDMeshProxyUserData::Internal_MeshHasFaces(mesh))
break;
if (m_mesh_face_count != mesh->m_F.UnsignedCount())
break;
if (m_mesh_vertex_count != mesh->m_V.UnsignedCount())
break;
const ON_SHA1_Hash f_sha1 = ON_SubDMeshProxyUserData::Internal_FaceSHA1(mesh);
if (f_sha1 != m_mesh_face_array_sha1)
break;
const ON_SHA1_Hash v_sha1 = ON_SubDMeshProxyUserData::Internal_VertexSHA1(mesh);
if (v_sha1 != m_mesh_vertex_array_sha1)
break;
return true;
}
m_mesh_face_count = 0;
m_mesh_vertex_count = 0;
m_mesh_face_array_sha1 = ON_SHA1_Hash::EmptyContentHash;
m_mesh_vertex_array_sha1 = ON_SHA1_Hash::EmptyContentHash;
return false;
}
bool ON_SubDMeshProxyUserData::IsValid(
class ON_TextLog* text_log
) const
{
for (;;)
{
if (nullptr == m_subd)
break;
if (m_mesh_face_count <= 0 )
break;
if (m_mesh_vertex_count <= 2 )
break;
if (ON_SHA1_Hash::EmptyContentHash == m_mesh_face_array_sha1)
break;
if (ON_SHA1_Hash::EmptyContentHash == m_mesh_vertex_array_sha1)
break;
if (false == m_userdata_xform.IsIdentity())
break;
return true;
}
return false;
}
bool ON_SubDMeshProxyUserData::GetDescription(ON_wString& description)
{
if (IsValid())
description = L"SubD attached to a valid proxy mesh.";
else
description = L"SubD attached to an invalid proxy mesh.";
return true;
}
bool ON_SubDMeshProxyUserData::WriteToArchive(
const class ON_BinaryArchive& archive,
const class ON_Object* parent_object
) const
{
for (;;)
{
if (archive.Archive3dmVersion() < 60)
break;
if (false == IsValid())
return false;
if (false == ParentMeshValid())
return false;
return true;
}
return false;
}
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