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opennurbs/opennurbs_subd_data.cpp
Bozo the Builder 904ef7893c Sync changes from upstream repository
2024-08-22 01:43:04 -07:00

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//
// Copyright (c) 1993-2022 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"
#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"
const ON_SubDLevel ON_SubDLevel::Empty;
//////////////////////////////////////////////////////////////////////////
//
// ON_SubDimple
//
ON_SubDimple::ON_SubDimple()
: RuntimeSerialNumber(++ON_SubDimple::Internal_RuntimeSerialNumberGenerator)
{}
ON_SubDimple::~ON_SubDimple()
{
Destroy();
}
ON_SubDHeap& ON_SubDimple::Heap()
{
return m_heap;
}
void ON_SubDimple::Clear()
{
m_subd_appearance = ON_SubD::DefaultSubDAppearance;
m_texture_coordinate_type = ON_SubDTextureCoordinateType::Unset;
m_texture_mapping_tag = ON_MappingTag::Unset;
m_colors_mapping_tag = ON_MappingTag::Unset;
m_fragment_texture_settings_hash = ON_SHA1_Hash::EmptyContentHash;
m_fragment_colors_settings_hash = ON_SHA1_Hash::EmptyContentHash;
for (unsigned i = 0; i < m_levels.UnsignedCount(); ++i)
{
ON_SubDLevel* level = m_levels[i];
if (nullptr != level)
{
m_levels[i] = nullptr;
delete level;
}
}
m_levels.SetCount(0);
m_active_level = nullptr;
m_heap.Clear();
m_face_packing_id = ON_nil_uuid;
m_face_packing_topology_hash = ON_SubDHash::Empty;
m_symmetry = ON_Symmetry::Unset;
}
void ON_SubDimple::ClearLevelContents(
ON_SubDLevel* level
)
{
if (nullptr == level)
return;
if (level == m_active_level)
ChangeGeometryContentSerialNumber(false);
level->ResetFaceArray();
level->ResetEdgeArray();
level->ResetVertexArray();
ON_SubDVertex* next_vertex = level->m_vertex[0];
level->m_vertex[0] = nullptr;
level->m_vertex[1] = nullptr;
ON_SubDEdge* next_edge = level->m_edge[0];
level->m_edge[0] = nullptr;
level->m_edge[1] = nullptr;
ON_SubDFace* next_face = level->m_face[0];
level->m_face[0] = nullptr;
level->m_face[1] = nullptr;
for (ON_SubDVertex* vertex = next_vertex; nullptr != vertex; vertex = next_vertex)
{
next_vertex = const_cast<ON_SubDVertex*>(vertex->m_next_vertex);
ReturnVertex(vertex);
}
for (ON_SubDEdge* edge = next_edge; nullptr != edge; edge = next_edge)
{
next_edge = const_cast<ON_SubDEdge*>(edge->m_next_edge);
ReturnEdge(edge);
}
for (ON_SubDFace* face = next_face; nullptr != face; face = next_face)
{
next_face = const_cast<ON_SubDFace*>(face->m_next_face);
ReturnFace(face);
}
}
unsigned int ON_SubDimple::ClearHigherSubdivisionLevels(
unsigned int max_level_index
)
{
const unsigned int original_level_count = m_levels.UnsignedCount();
if (max_level_index+1 < m_levels.UnsignedCount())
{
unsigned int level_count = m_levels.UnsignedCount();
if (nullptr != m_active_level && m_active_level->m_level_index > max_level_index)
{
if ( level_count > max_level_index )
{
m_active_level = m_levels[max_level_index];
ChangeGeometryContentSerialNumber(false);
}
}
while (level_count > max_level_index+1)
{
const unsigned int level_index = (level_count-1);
ON_SubDLevel* level = m_levels[level_index];
m_levels[level_index] = nullptr;
m_levels.Remove();
level_count--;
if (level_count != m_levels.UnsignedCount())
{
Clear();
break;
}
if ( nullptr == level )
continue;
ClearLevelContents(level);
delete level;
}
}
return original_level_count - m_levels.UnsignedCount();
}
unsigned int ON_SubDimple::ClearLowerSubdivisionLevels(
unsigned int min_level_index
)
{
const unsigned int original_level_count = m_levels.UnsignedCount();
if (min_level_index > 0 && min_level_index < original_level_count)
{
if (nullptr != m_active_level && m_active_level->m_level_index < min_level_index)
{
m_active_level = m_levels[min_level_index];
ChangeGeometryContentSerialNumber(false);
}
for ( unsigned int level_index = 0; level_index < min_level_index; level_index++)
{
ON_SubDLevel* level = m_levels[level_index];
m_levels[level_index] = nullptr;
if ( nullptr == level )
continue;
ClearLevelContents(level);
delete level;
}
unsigned short new_level_index = 0;
for (unsigned int level_index = min_level_index; level_index < original_level_count; level_index++, new_level_index++)
{
ON_SubDLevel* level = m_levels[level_index];
m_levels[level_index] = nullptr;
if ( nullptr == level )
continue;
level->m_level_index = new_level_index;
for (ON_SubDVertex* vertex = level->m_vertex[0]; nullptr != vertex; vertex = const_cast<ON_SubDVertex*>(vertex->m_next_vertex))
{
vertex->SetSubdivisionLevel(new_level_index);
}
for (ON_SubDEdge* edge = level->m_edge[0]; nullptr != edge; edge = const_cast<ON_SubDEdge*>(edge->m_next_edge))
{
edge->SetSubdivisionLevel(new_level_index);
}
for (ON_SubDFace* face = level->m_face[0]; nullptr != face; face = const_cast<ON_SubDFace*>(face->m_next_face))
{
face->SetSubdivisionLevel(new_level_index);
face->m_level_zero_face_id = face->m_id;
}
m_levels[new_level_index] = level;
}
m_levels.SetCount(new_level_index);
}
return original_level_count - m_levels.UnsignedCount();
}
unsigned int ON_SubDimple::ClearInactiveLevels()
{
const unsigned active_level_index = this->ActiveLevelIndex();
unsigned c1 = ClearHigherSubdivisionLevels(active_level_index);
unsigned c0 = ClearLowerSubdivisionLevels(active_level_index);
return c0 + c1;
}
void ON_SubDimple::Destroy()
{
const unsigned int level_count = m_levels.Count();
for (unsigned int level_index = 0; level_index < level_count; level_index++)
{
ON_SubDLevel* level = m_levels[level_index];
if ( nullptr == level )
continue;
m_levels[level_index] = nullptr;
delete level;
}
m_levels.Destroy();
m_heap.Destroy();
m_subd_geometry_content_serial_number = 0;
m_subd_render_content_serial_number = 0;
}
ON_SubDLevel* ON_SubDimple::ActiveLevel(
bool bCreateIfNeeded)
{
if (nullptr == m_active_level)
{
unsigned int level_index = (m_levels.UnsignedCount() > 0) ? (m_levels.UnsignedCount()-1) : 0U;
m_active_level = SubDLevel(level_index,bCreateIfNeeded && 0 == m_levels.UnsignedCount());
ChangeGeometryContentSerialNumber(false);
}
return m_active_level;
}
class ON_SubDLevel* ON_SubDimple::SubDLevel(
unsigned int level_index,
bool bCreateIfNeeded
)
{
ON_SubDLevel* level = nullptr;
if (level_index < m_levels.UnsignedCount())
level = m_levels[level_index];
else if (bCreateIfNeeded && level_index == m_levels.UnsignedCount())
{
level = new ON_SubDLevel();
level->m_level_index = level_index;
m_levels.Append(level);
if (nullptr == m_active_level)
{
m_active_level = level;
ChangeGeometryContentSerialNumber(false);
}
}
return level;
}
class ON_SubDLevel const * ON_SubDimple::SubDLevel(
unsigned int level_index
) const
{
if (level_index < m_levels.UnsignedCount())
return m_levels[level_index];
return nullptr;
}
void ON_SubDAggregates::UpdateBoundingBox(
const ON_SubDLevel* level
)
{
ON_BoundingBox bbox = ON_BoundingBox::EmptyBoundingBox;
if (nullptr != level)
{
double x;
for (const ON_SubDVertex* v = level->m_vertex[0]; nullptr != v; v = v->m_next_vertex)
{
if (v->m_P[0] == v->m_P[0] && v->m_P[1] == v->m_P[1] && v->m_P[2] == v->m_P[2])
{
bbox.m_min.x = v->m_P[0];
bbox.m_min.y = v->m_P[1];
bbox.m_min.z = v->m_P[2];
bbox.m_max.x = bbox.m_min.x;
bbox.m_max.y = bbox.m_min.y;
bbox.m_max.z = bbox.m_min.z;
for (v = v->m_next_vertex; nullptr != v; v = v->m_next_vertex)
{
x = v->m_P[0];
if (x < bbox.m_min.x) bbox.m_min.x = x; else if (x > bbox.m_max.x) bbox.m_max.x = x;
x = v->m_P[1];
if (x < bbox.m_min.y) bbox.m_min.y = x; else if (x > bbox.m_max.y) bbox.m_max.y = x;
x = v->m_P[2];
if (x < bbox.m_min.z) bbox.m_min.z = x; else if (x > bbox.m_max.z) bbox.m_max.z = x;
}
break;
}
}
}
m_controlnet_bbox = bbox;
m_bDirtyBoundingBox = false;
}
ON_BoundingBox ON_SubDLevel::ControlNetBoundingBox() const
{
if ( m_aggregates.m_bDirtyBoundingBox )
m_aggregates.UpdateBoundingBox(this);
return m_aggregates.m_controlnet_bbox;
}
void ON_SubDAggregates::UpdateTopologicalAttributes(
const ON_SubDLevel* level
)
{
m_topological_attributes = 0;
if (nullptr == level)
return;
if (m_bDirtyBoundingBox)
{
UpdateBoundingBox(level);
if (m_bDirtyBoundingBox)
return;
}
bool bIsManifold = level->m_edge_count >= 3 && level->m_face_count >= 1;
bool bIsOriented = bIsManifold;
bool bHasBoundary = false;
for (const ON_SubDEdge* e = level->m_edge[0]; nullptr != e; e = e->m_next_edge)
{
if (1 == e->m_face_count)
{
bHasBoundary = true;
if (false == bIsManifold && false == bIsOriented)
break;
}
else if (2 == e->m_face_count)
{
if (ON_SUBD_FACE_DIRECTION(e->m_face2[0].m_ptr) == ON_SUBD_FACE_DIRECTION(e->m_face2[1].m_ptr))
{
bIsOriented = false;
if (bHasBoundary && false == bIsManifold)
break;
}
}
else
{
bIsManifold = false;
bIsOriented = false;
if (bHasBoundary)
break;
}
}
double vol = 0.0;
if (bIsManifold && bIsOriented && false == bHasBoundary)
{
const ON_3dVector B(m_controlnet_bbox.IsValid() ? ON_3dVector(m_controlnet_bbox.Center()) : ON_3dVector::ZeroVector);
ON_3dVector P, Q, R;
for (const ON_SubDFace* f = level->m_face[0]; nullptr != f && vol == vol; f = f->m_next_face)
{
if (false == f->GetSubdivisionPoint( &P.x))
{
vol = ON_DBL_QNAN;
break;
}
P -= B;
const unsigned count = f->EdgeCount();
if (count < 3)
{
vol = ON_DBL_QNAN;
break;
}
const ON_SubDVertex* v = f->Vertex(count - 1);
if (nullptr == v || false == v->GetSubdivisionPoint( &R.x))
{
vol = ON_DBL_QNAN;
break;
}
R -= B;
for (unsigned fvi = 0; fvi < count; fvi++)
{
Q = R;
v = f->Vertex(fvi);
if (nullptr == v || false == v->GetSubdivisionPoint( &R.x))
{
vol = ON_DBL_QNAN;
break;
}
R -= B;
// ON_TripleProduct(P, Q, R) = 6x signed volume of tetrahedron with triangle base (P,Q,R) and apex B.
vol += ON_TripleProduct(P, Q, R);
}
}
}
// bit 1 indicates m_topological_attributes is set.
m_topological_attributes = 1;
if (bIsManifold)
m_topological_attributes |= 2;
if (bIsOriented)
m_topological_attributes |= 4;
if (bHasBoundary)
m_topological_attributes |= 8;
if (vol > 0.0)
m_topological_attributes |= 16;
else if (vol < 0.0)
m_topological_attributes |= 32;
}
bool ON_SubDAggregates::GetTopologicalAttributes(bool & bIsManifold, bool & bIsOriented, bool & bHasBoundary, int & solid_orientation) const
{
// if m_bDirtyBoundingBox is true, then m_topological_attributes is dirty as well.
const unsigned int topological_attributes = m_bDirtyBoundingBox ? 0U : m_topological_attributes;
bIsManifold = 0 != (2 & topological_attributes);
bIsOriented = 0 != (4 & topological_attributes);
bHasBoundary = 0 != (8 & topological_attributes);
if (bIsManifold && bIsOriented && false == bHasBoundary)
{
if (0 != (16 & topological_attributes))
solid_orientation = 1;
else if (0 != (32 & topological_attributes))
solid_orientation = -1;
else
solid_orientation = 2;
}
else
solid_orientation = 0;
return (0 != topological_attributes);
}
bool ON_SubDAggregates::GetTopologicalAttributes(const ON_SubDLevel * level, bool &bIsManifold, bool & bIsOriented, bool & bHasBoundary, int & solid_orientation)
{
if ( (m_bDirtyBoundingBox || 0 == m_topological_attributes) && nullptr != level)
UpdateTopologicalAttributes(level);
return GetTopologicalAttributes(bIsManifold, bIsOriented, bHasBoundary, solid_orientation);
}
const ON_AggregateComponentStatusEx ON_SubDLevel::AggregateComponentStatus() const
{
if (false == m_aggregates.m_aggregate_status.IsCurrent())
m_aggregates.UpdateAggregateComponentStatus(this);
return m_aggregates.m_aggregate_status;
}
ON__UINT64 ON_SubDLevel::ComponentStatusSerialNumber() const
{
return m_aggregates.m_aggregate_status.ComponentStatusSerialNumber();
}
void ON_SubDAggregates::UpdateAggregateEdgeAttributes(
const ON_SubDLevel* level
)
{
if (nullptr != level)
{
unsigned int bits = 0;
for (const ON_SubDEdge* e = level->m_edge[0]; nullptr != e; e = e->m_next_edge)
bits |= e->EdgeAttributes();
m_aggregate_edge_attributes = bits;
}
m_bDirtyEdgeAttributes = false;
}
unsigned int ON_SubDLevel::EdgeFlags() const
{
if (m_aggregates.m_bDirtyEdgeAttributes)
m_aggregates.UpdateAggregateEdgeAttributes(this);
return m_aggregates.m_aggregate_edge_attributes;
}
unsigned int ON_SubD::AggregateEdgeAttributes() const
{
return ActiveLevel().EdgeFlags();
}
void ON_SubDAggregates::UpdateAggregateComponentStatus(
const ON_SubDLevel* level
)
{
m_aggregate_status = ON_AggregateComponentStatus::Empty;
if (nullptr != level)
{
for (const ON_SubDVertex* v = level->m_vertex[0]; nullptr != v; v = v->m_next_vertex)
m_aggregate_status.Add(v->m_status);
for (const ON_SubDEdge* e = level->m_edge[0]; nullptr != e; e = e->m_next_edge)
m_aggregate_status.Add(e->m_status);
for (const ON_SubDFace* f = level->m_face[0]; nullptr != f; f = f->m_next_face)
m_aggregate_status.Add(f->m_status);
}
}
//////////////////////////////////////////////////////////////////////////
//
// ON_SubDLevel
//
std::shared_ptr<const ON_SubDVertex*> ON_SubDLevel::VertexArray() const
{
if (m_vertex_count != m_vertex_array_count || nullptr == m_vertex_array.get())
{
ON_SubDVertex const** a = new ON_SubDVertex const*[m_vertex_count];
ON_SubDVertex const** a1 = a + m_vertex_count;
const_cast<ON_SubDLevel*>(this)->m_vertex_array = std::shared_ptr<const ON_SubDVertex*>(a);
for (const ON_SubDVertex* v = m_vertex[0]; nullptr != v && a < a1; v = v->m_next_vertex)
*a++ = v;
while (a < a1)
*a++ = nullptr;
const_cast<ON_SubDLevel*>(this)->m_vertex_array_count = m_vertex_count;
}
return m_vertex_array;
}
std::shared_ptr<const ON_SubDEdge*> ON_SubDLevel::EdgeArray() const
{
if (m_edge_count != m_edge_array_count || nullptr == m_edge_array.get())
{
ON_SubDEdge const** a = new ON_SubDEdge const*[m_edge_count];
ON_SubDEdge const** a1 = a + m_edge_count;
const_cast<ON_SubDLevel*>(this)->m_edge_array = std::shared_ptr<const ON_SubDEdge*>(a);
for (const ON_SubDEdge* v = m_edge[0]; nullptr != v && a < a1; v = v->m_next_edge)
*a++ = v;
while (a < a1)
*a++ = nullptr;
const_cast<ON_SubDLevel*>(this)->m_edge_array_count = m_edge_count;
}
return m_edge_array;
}
std::shared_ptr<const ON_SubDFace*> ON_SubDLevel::FaceArray() const
{
if (m_face_count != m_face_array_count || nullptr == m_face_array.get())
{
ON_SubDFace const** a = new ON_SubDFace const*[m_face_count];
ON_SubDFace const** a1 = a + m_face_count;
const_cast<ON_SubDLevel*>(this)->m_face_array = std::shared_ptr<const ON_SubDFace*>(a);
for (const ON_SubDFace* v = m_face[0]; nullptr != v && a < a1; v = v->m_next_face)
*a++ = v;
while (a < a1)
*a++ = nullptr;
const_cast<ON_SubDLevel*>(this)->m_face_array_count = m_face_count;
}
return m_face_array;
}
//////////////////////////////////////////////////////////////////////////
//
// ON_SubD::Transform
// ON_SubDimple::Transform
// ON_SubDLevel::Transform
// ON_SubDVertex::Transform
// ON_SubDEdge::Transform
// ON_SubDFace::Transform
//
static void TransformPoint(
const double* xform,
double P[3]
)
{
const double x = xform[0] * P[0] + xform[1] * P[1] + xform[2] * P[2] + xform[3];
const double y = xform[4] * P[0] + xform[5] * P[1] + xform[6] * P[2] + xform[7];
const double z = xform[8] * P[0] + xform[9] * P[1] + xform[10] * P[2] + xform[11];
const double w = xform[12] * P[0] + xform[13] * P[1] + xform[14] * P[2] + xform[15];
if (1.0 == w)
{
P[0] = x;
P[1] = y;
P[2] = z;
}
else
{
P[0] = x / w;
P[1] = y / w;
P[2] = z / w;
}
}
static void TransformVector(
const double* xform,
double V[3]
)
{
const double x = xform[0] * V[0] + xform[1] * V[1] + xform[2] * V[2];
const double y = xform[4] * V[0] + xform[5] * V[1] + xform[6] * V[2];
const double z = xform[8] * V[0] + xform[9] * V[1] + xform[10] * V[2];
V[0] = x;
V[1] = y;
V[2] = z;
}
bool ON_SubDSectorSurfacePoint::Transform(
const ON_Xform& xform
)
{
TransformPoint(&xform.m_xform[0][0],m_limitP);
TransformVector(&xform.m_xform[0][0],m_limitT1);
TransformVector(&xform.m_xform[0][0],m_limitT2);
ON_3dVector N = ON_CrossProduct(m_limitT1,m_limitT2);
bool rc = N.Unitize();
m_limitN[0] = N.x;
m_limitN[1] = N.y;
m_limitN[2] = N.z;
return rc;
}
bool ON_SubDSectorSurfacePoint::Transform(
const ON_Xform& xform,
const ON_Xform& xformNormals
)
{
TransformPoint(&xform.m_xform[0][0], m_limitP);
TransformVector(&xform.m_xform[0][0], m_limitT1);
TransformVector(&xform.m_xform[0][0], m_limitT2);
TransformVector(&xformNormals.m_xform[0][0], m_limitN);
return true;
}
bool ON_SubDVertex::Transform(
bool bTransformationSavedSubdivisionPoint,
const class ON_Xform& xform
)
{
TransformPoint(&xform.m_xform[0][0],m_P);
if (bTransformationSavedSubdivisionPoint)
{
// Transform saved subdivision point
Internal_TransformComponentBase(bTransformationSavedSubdivisionPoint, xform);
// NOTE WELL:
// If the vertex
// is tagged as ON_SubDVertexTag::Corner
// and bTransformationSavedSubdivisionPoint is true,
// and the corner sector(s) contains interior smooth edges,
// and the transformation changes the angle between a corner sector's crease boundary,
// then the sector's interior smooth edge's m_sector_coefficient[] could change
// and invalidate the subdivision points and limit points.
// This is only possible for uncommon (in practice) transformations
// and corner sectors and will require a fair bit of testing for
// now it's easier to simply set bTransformationSavedSubdivisionPoint to false
// at a higher level when these types of transformations are encountered.
if (bTransformationSavedSubdivisionPoint && Internal_SurfacePointFlag())
{
for (const ON_SubDSectorSurfacePoint* lp = &m_limit_point; nullptr != lp; lp = lp->m_next_sector_limit_point)
const_cast<ON_SubDSectorSurfacePoint*>(lp)->Transform(xform);
}
else
Internal_ClearSurfacePointFlag();
}
else
this->ClearSavedSubdivisionPoints();
return true;
}
bool ON_SubDVertex::Transform(
bool bTransformationSavedSubdivisionPoint,
const class ON_Xform& xform,
const class ON_Xform& xformNormals
)
{
TransformPoint(&xform.m_xform[0][0],m_P);
if (bTransformationSavedSubdivisionPoint)
{
// Transform saved subdivision point
Internal_TransformComponentBase(bTransformationSavedSubdivisionPoint, xform);
// NOTE WELL:
// If the vertex
// is tagged as ON_SubDVertexTag::Corner
// and bTransformationSavedSubdivisionPoint is true,
// and the corner sector(s) contains interior smooth edges,
// and the transformation changes the angle between a corner sector's crease boundary,
// then the sector's interior smooth edge's m_sector_coefficient[] could change
// and invalidate the subdivision points and limit points.
// This is only possible for uncommon (in practice) transformations
// and corner sectors and will require a fair bit of testing for
// now it's easier to simply set bTransformationSavedSubdivisionPoint to false
// at a higher level when these types of transformations are encountered.
if (bTransformationSavedSubdivisionPoint && Internal_SurfacePointFlag())
{
for (const ON_SubDSectorSurfacePoint* lp = &m_limit_point; nullptr != lp; lp = lp->m_next_sector_limit_point)
const_cast<ON_SubDSectorSurfacePoint*>(lp)->Transform(xform, xformNormals);
}
else
Internal_ClearSurfacePointFlag();
}
else
this->ClearSavedSubdivisionPoints();
return true;
}
void ON_SubDVertex::UnsetControlNetPoint()
{
m_P[0] = ON_DBL_QNAN;
m_P[1] = ON_DBL_QNAN;
m_P[2] = ON_DBL_QNAN;
ClearSavedSubdivisionPoints();
// With a nan control net point, there is no need for an expensive unset
// of the neighborhood because the caller will either later pass
// bClearNeighborhoodCache=true to ON_SubDVertex::SetControlNetPoint(...,bClearNeighborhoodCache)
// or deal with cleaning up the cached evaluations in some other way.
}
bool ON_SubDVertex::SetControlNetPoint(
ON_3dPoint control_net_point,
bool bClearNeighborhoodCache
)
{
if (false == control_net_point.IsValid())
return false;
if (false == (m_P[0] == control_net_point.x && m_P[1] == control_net_point.y && m_P[2] == control_net_point.z))
{
m_P[0] = control_net_point.x;
m_P[1] = control_net_point.y;
m_P[2] = control_net_point.z;
ClearSavedSubdivisionPoints();
for(;;)
{
if (false == bClearNeighborhoodCache)
break;
if (this->m_edge_count <= 0 || nullptr == this->m_edges)
break;
// need to clear 2 rings of faces around "this" vertex.
const bool bThisVertexIsACorner = ON_SubDVertexTag::Corner == this->m_vertex_tag;
for (unsigned short vei = 0; vei < this->m_edge_count; vei++)
{
const ON__UINT_PTR edgeptr = this->m_edges[vei].m_ptr;
const ON_SubDEdge* edge = ON_SUBD_EDGE_POINTER(edgeptr);
if (nullptr == edge)
continue;
edge->ON_SubDComponentBase::Internal_ClearSubdivisionPointAndSurfacePointFlags();
// v1 = vertex opposite this on edge
const ON_SubDVertex* v1 = edge->m_vertex[1 - ON_SUBD_EDGE_DIRECTION(edgeptr)];
if (nullptr == v1)
continue;
v1->ClearSavedSubdivisionPoints();
if (ON_SubDVertexTag::Smooth != v1->m_vertex_tag)
continue;
if (false == bThisVertexIsACorner)
continue;
if (false == edge->IsSmooth())
continue;
// When a corner vertex is moved, the sector coefficients
// for smooth edges can change because the corner sector
// coefficient depends on the angle between the creases that
// bound the sector. For any other tag, the sector
// coefficients depend only on the topology and tags and
// moving a control net point does not change those.
edge->UnsetSectorCoefficientsForExperts();
}
if (this->m_face_count <= 0 || nullptr == this->m_faces)
break;
//const ON_SubDFace* face = this->m_faces[m_face_count - 1];
for(unsigned short vfi = 0; vfi < m_face_count; vfi++)
{
//const ON_SubDFace* prevface = face;
const ON_SubDFace* face = this->m_faces[vfi];
if (nullptr == face)
continue;
// face->ON_SubDComponentBase::Internal_ClearSubdivisionPointAndSurfacePointFlags() is fast
face->ON_SubDComponentBase::Internal_ClearSubdivisionPointAndSurfacePointFlags();
const ON_SubDEdgePtr* face_eptr = face->m_edge4;
for (unsigned short fei = 0; fei < face->m_edge_count; fei++, face_eptr++)
{
if (4 == fei)
{
face_eptr = face->m_edgex;
if (nullptr == face_eptr)
break;
}
const ON__UINT_PTR e1ptr = face_eptr->m_ptr;
ON_SubDEdge* e1 = ON_SUBD_EDGE_POINTER(e1ptr);
if (nullptr == e1)
continue;
// e1->ON_SubDComponentBase::Internal_ClearSubdivisionPointAndSurfacePointFlags() is fast.
// There is no need to unset e1 sector coefficients.
e1->ON_SubDComponentBase::Internal_ClearSubdivisionPointAndSurfacePointFlags();
const ON_SubDVertex* v1 = e1->m_vertex[ON_SUBD_EDGE_DIRECTION(e1ptr)];
if (this == v1 || nullptr == v1)
continue;
v1->ClearSavedSubdivisionPoints();
if (v1->m_edge_count <= 0 || nullptr == v1->m_edges)
continue;
for (unsigned short v1ei = 0; v1ei < v1->m_edge_count; v1ei++)
{
// e2 is sometime in ring 1, sometimes between ring 1 and 2,
// and sometimes in ring 2, but this is enough to clear the
// ring 2 edges that can be modified by moving "this" vertex.
const ON_SubDEdge* e2 = ON_SUBD_EDGE_POINTER(v1->m_edges[v1ei].m_ptr);
if (nullptr != e2)
e2->ON_SubDComponentBase::Internal_ClearSubdivisionPointAndSurfacePointFlags();
}
if (v1->m_face_count <= 0 || nullptr == v1->m_faces)
continue;
for (unsigned short v1fi = 0; v1fi < v1->m_face_count; v1fi++)
{
// f2 is sometimes in ring 1 and sometimes in ring 2, but this
// is enough to clear the ring 2 faces that can be modified by
// moving "this" vertex.
const ON_SubDFace* f2 = v1->m_faces[v1fi];
if (nullptr != f2)
f2->ON_SubDComponentBase::Internal_ClearSubdivisionPointAndSurfacePointFlags();
}
}
}
break;
}
}
return true;
}
void ON_SubDComponentBase::Internal_TransformComponentBase(
bool bTransformationSavedSubdivisionPoint,
const class ON_Xform& xform
)
{
if ( SavedSubdivisionPointIsSet() )
{
if (bTransformationSavedSubdivisionPoint)
TransformPoint(&xform.m_xform[0][0], m_saved_subd_point1);
else
ON_SUBD_CACHE_CLEAR_POINT_FLAG(m_saved_points_flags);
}
}
bool ON_SubDEdge::Transform(
bool bTransformationSavedSubdivisionPoint,
const class ON_Xform& xform
)
{
Internal_TransformComponentBase(bTransformationSavedSubdivisionPoint, xform);
Internal_ClearSurfacePointFlag();
return true;
}
bool ON_SubDFace::Transform(
bool bTransformationSavedSubdivisionPoint,
const class ON_Xform& xform
)
{
ON_Xform xformNormals{ ON_Xform::IdentityTransformation };
const double det{ xform.GetSurfaceNormalXformKeepLengthAndOrientation(xformNormals) };
ON_Xform xformCurvatures{ ON_Xform::IdentityTransformation };
if (abs(det) > 0) {
if (abs(abs(det) - 1) > ON_SQRT_EPSILON)
{
xformCurvatures = ON_Xform::DiagonalTransformation(pow(det, -1. / 3.));
}
}
else {
return ON_SUBD_RETURN_ERROR(false);
}
const bool bKeepCurvatures{ xform.IsSimilarity() != 0 };
const bool bKeepTextures{ true };
const bool bKeepColors{ xform.IsRigid() != 0 };
// bTransformationSavedSubdivisionPoint = true should mean that
// xform is a similarity.
// If it's more complicated than this, the calling code should
// reset or adjust colors as needed based on information in the
// SubD's texture coordinate mapping tag and color mapping tag.
// Note that both of those tags have their transformation updated
// so intelligent decisions can be made at a higher level where
// there is enough context to make the correct decision.
return Transform(bTransformationSavedSubdivisionPoint, bKeepCurvatures, bKeepTextures, bKeepColors, xform, xformNormals, xformCurvatures, ON_Xform::IdentityTransformation, ON_Xform::IdentityTransformation);
}
bool ON_SubDFace::Transform(
bool bTransformationSavedSubdivisionPoint,
bool bKeepCurvatures,
bool bKeepTextures,
bool bKeepColors,
const ON_Xform& xform,
const ON_Xform& xformNormals,
const ON_Xform& xformCurvatures,
const ON_Xform& xformTextures,
const ON_Xform& xformColors
)
{
if (bTransformationSavedSubdivisionPoint)
{
Internal_TransformComponentBase(true, xform);
if (Internal_SurfacePointFlag())
{
for (ON_SubDMeshFragment* f = m_mesh_fragments; nullptr != f; f = f->m_next_fragment)
f->Transform(bKeepCurvatures, bKeepTextures, bKeepColors, xform, xformNormals, xformCurvatures, xformTextures, xformColors);
}
else
Internal_ClearSurfacePointFlag();
}
else
this->ClearSavedSubdivisionPoints();
return true;
}
bool ON_SubDLevel::Transform(
bool bTransformationSavedSubdivisionPoint,
const class ON_Xform& xform
)
{
bool rc = true;
ON_Xform xformNormals{ ON_Xform::IdentityTransformation };
const double det{ xform.GetSurfaceNormalXformKeepLengthAndOrientation(xformNormals) };
ON_Xform xformCurvatures{ ON_Xform::IdentityTransformation };
if (abs(det) > 0) {
if (abs(abs(det) - 1) > ON_SQRT_EPSILON)
{
xformCurvatures = ON_Xform::DiagonalTransformation(pow(det, -1. / 3.));
}
}
else {
rc = false;
}
const bool bKeepCurvatures{ xform.IsSimilarity() != 0 };
const bool bKeepTextures{ true };
const bool bKeepColors{ xform.IsRigid() != 0 };
m_aggregates.m_bDirtyBoundingBox = true;
for (const ON_SubDVertex* vertex = m_vertex[0]; nullptr != vertex; vertex = vertex->m_next_vertex)
{
if (false == const_cast<ON_SubDVertex*>(vertex)->Transform(bTransformationSavedSubdivisionPoint, xform, xformNormals))
rc = false;
}
for (const ON_SubDEdge* edge = m_edge[0]; nullptr != edge; edge = edge->m_next_edge)
{
if (false == const_cast<ON_SubDEdge*>(edge)->Transform(bTransformationSavedSubdivisionPoint, xform))
rc = false;
}
for (const ON_SubDFace* face = m_face[0]; nullptr != face; face = face->m_next_face)
{
if (false == const_cast<ON_SubDFace*>(face)->Transform(
bTransformationSavedSubdivisionPoint, bKeepCurvatures, bKeepTextures, bKeepColors,
xform, xformNormals, xformCurvatures, ON_Xform::IdentityTransformation, ON_Xform::IdentityTransformation
))
rc = false;
}
if (false == m_surface_mesh.Transform(
bKeepCurvatures, bKeepTextures, bKeepColors,
xform, xformNormals, xformCurvatures, ON_Xform::IdentityTransformation, ON_Xform::IdentityTransformation
))
rc = false;
if (false == m_control_net_mesh.Transform(
bKeepCurvatures, bKeepTextures, bKeepColors,
xform, xformNormals, xformCurvatures, ON_Xform::IdentityTransformation, ON_Xform::IdentityTransformation
))
rc = false;
if (rc)
return true;
return ON_SUBD_RETURN_ERROR(false);
}
bool ON_SubDMesh::Transform(
const ON_Xform& xform
)
{
if (false == xform.IsValid())
return false;
if (xform.IsIdentity())
return true;
if (xform.IsZero())
return false;
ON_SubDMeshImpl* impl = m_impl_sp.get();
if ( nullptr == impl )
return true; // transform applied to empty mesh is true on purpose. Changing to false will break other code.
return impl->Transform(xform);
}
bool ON_SubDMesh::Transform(
bool bKeepCurvatures,
bool bKeepTextures,
bool bKeepColors,
const ON_Xform& xform,
const ON_Xform& xformNormals,
const ON_Xform& xformCurvatures,
const ON_Xform& xformTextures,
const ON_Xform& xformColors
)
{
if (false == xform.IsValid())
return false;
if (xform.IsIdentity())
return true;
if (xform.IsZero())
return false;
ON_SubDMeshImpl* impl = m_impl_sp.get();
if ( nullptr == impl )
return true; // transform applied to empty mesh is true on purpose. Changing to false will break other code.
return impl->Transform(bKeepCurvatures, bKeepTextures, bKeepColors, xform, xformNormals, xformCurvatures, xformTextures, xformColors);
}
bool ON_SubDimple::Transform(
const ON_Xform& xform
)
{
const bool bSymmetricInput = m_symmetry.SameSymmetricObjectGeometry(this);
const ON_Symmetry symmetry0 = m_symmetry;
const ON__UINT64 gsn0 = this->GeometryContentSerialNumber();
const bool bUpdateFacePackingHash
= m_face_packing_topology_hash.m_subd_geometry_content_serial_number == gsn0
&& m_face_packing_topology_hash.IsNotEmpty()
&& m_face_packing_topology_hash.SubDHash() == this->SubDHash(ON_SubDHashType::TopologyAndEdgeCreases, false).SubDHash()
;
if (false == xform.IsValid())
return false;
if (xform.IsZero())
return true;
if (xform.IsIdentity())
return true;
const unsigned int level_count = m_levels.UnsignedCount();
if ( level_count <= 0 )
return true; // transform applied to empty subd is true on purpose.
bool rc = true;
// If
// 1) The transformation is being applied to every vertex, edge and
// face in every level of a subdivision object, and
// 2) the transformation is an isometry (rotation, translation, mirror, ...),
// a uniform scale, or a composition of these types,
// then set bTransformationSavedSubdivisionPoint = true to apply the
// transformation to saved subdivision and saved limit point information.
// In all other cases, set bTransformationSavedSubdivisionPoint = false
// and any saved subdivision points or saved limit points will be
// deleted.
const bool bTransformationSavedSubdivisionPoint = (0 != xform.IsSimilarity());
bool bHasTextures = false;
bool bHasColors = false;
for (unsigned int level_index = 0; level_index < level_count; level_index++)
{
ON_SubDLevel* level = m_levels[level_index];
if (nullptr == level)
{
ON_SubDIncrementErrorCount();
continue;
}
if (false == level->Transform(bTransformationSavedSubdivisionPoint, xform))
{
rc = false;
break;
}
if (level->m_face_count > 0 && level->m_face[0])
{
const ON_SubDMeshFragment* frag = level->m_face[0]->MeshFragments();
if (nullptr != frag)
{
if (frag->TextureCoordinateCount() > 0)
bHasTextures = true;
if (frag->ColorCount() > 0)
bHasColors = true;
}
}
}
if (bHasTextures)
this->m_texture_mapping_tag.Transform(xform);
if (bHasColors)
this->m_colors_mapping_tag.Transform(xform);
// SubD has been moved - geometry changed and we need to bump the geometry content serial number.
this->ChangeGeometryContentSerialNumber(false);
// GeometryContentSerial number trackers need to be updated
// so the SubD knows its status with respect to the
// newly transformed geometry.
if (bUpdateFacePackingHash)
m_face_packing_topology_hash = this->SubDHash(ON_SubDHashType::TopologyAndEdgeCreases, false);
if (m_symmetry.IsSet())
{
m_symmetry = m_symmetry.TransformConditionally(xform);
bool bSymmetricOutput = false;
if (bSymmetricInput)
{
// see if the transformed object will still be symmetric.
if (ON_Symmetry::Coordinates::Object == m_symmetry.SymmetryCoordinates())
{
// object is still symmetric.
bSymmetricOutput = true;
}
else if (ON_Symmetry::Coordinates::World == m_symmetry.SymmetryCoordinates())
{
// if transform didn't move the symmetry
if ( 0 == ON_Symmetry::CompareSymmetryTransformation(&symmetry0, &m_symmetry, ON_UNSET_VALUE) )
bSymmetricOutput = true;
}
}
if (bSymmetricOutput)
{
if (ON_Symmetry::Coordinates::Object == m_symmetry.SymmetryCoordinates())
{
// symmetry constraints transformed with object
m_symmetry.SetSymmetricObject(this);
}
else
{
// object moved with respect to symmetry constraints
// DO NOTHING HERE - the serial number and hashes on m_symmetry will inform downstream processes
// that the object no longer has the symmetry property specified by m_symmetry.
// It will get updated when appropriate - typically in replace object.
// EXAMPLE: Make a SubD plane - reflect it across the world Y axis.
// Then rotate the plane a bit. The rotated plane gets fixed in replace object.
}
}
else
{
// input was already dirty - remove all object settings from m_symmetry.
m_symmetry.ClearSymmetricObject();
}
}
else
{
m_symmetry = ON_Symmetry::Unset;
}
return rc;
}
bool ON_SubDMeshFragment::Transform(
const ON_Xform& xform
)
{
const bool bKeepCurvatures{ xform.IsSimilarity() != 0 };
const bool bKeepTextures{ true };
const bool bKeepColors{ xform.IsRigid() != 0 };
return this->Transform(bKeepCurvatures, bKeepTextures, bKeepColors, xform);
}
bool ON_SubDMeshFragment::Transform(
bool bKeepCurvatures,
bool bKeepTextures,
bool bKeepColors,
const ON_Xform& xform
)
{
ON_Xform xformNormals{ON_Xform::IdentityTransformation};
const double det{ xform.GetSurfaceNormalXformKeepLengthAndOrientation(xformNormals) };
ON_Xform xformCurvatures{ON_Xform::IdentityTransformation};
if (abs(det) > 0) {
if (abs(abs(det) - 1) > ON_SQRT_EPSILON)
{
xformCurvatures = ON_Xform::DiagonalTransformation(pow(det, -1. / 3.));
}
}
else {
return ON_SUBD_RETURN_ERROR(false);
}
return this->Transform(
bKeepCurvatures, bKeepTextures, bKeepColors,
xform, xformNormals, xformCurvatures, ON_Xform::IdentityTransformation, ON_Xform::IdentityTransformation
);
}
bool ON_SubDMeshFragment::Transform(
bool bKeepCurvatures,
bool bKeepTextures,
bool bKeepColors,
const ON_Xform& xform,
const ON_Xform& xformNormals,
const ON_Xform& xformCurvatures,
const ON_Xform& xformTextures,
const ON_Xform& xformColors
)
{
const unsigned count = PointCount();
if (0 == count)
{
m_surface_bbox = ON_BoundingBox::EmptyBoundingBox;
return true;
}
if ( false == ON_TransformPointList(3,false, count,(int)m_P_stride,m_P,xform) )
return ON_SUBD_RETURN_ERROR(false);
if (count == NormalCount())
{
if (false == ON_TransformVectorList(3, count, (int)m_N_stride, m_N, xformNormals))
return ON_SUBD_RETURN_ERROR(false);
}
if (0 != (ON_SubDMeshFragment::EtcControlNetQuadBit & m_vertex_count_etc))
{
for (int i = 0; i < 4; i++)
{
const ON_3dPoint A(m_ctrlnetP[i]);
if (A.IsValid())
{
const ON_3dPoint B = xform * A;
m_ctrlnetP[i][0] = B.x;
m_ctrlnetP[i][1] = B.y;
m_ctrlnetP[i][2] = B.z;
}
}
}
// Pierre, 2023-04-13: This was wrongly looking at ON_SubDMeshFragment::EtcControlNetQuadBit & m_vertex_capacity_etc)
// That is actually already defined for the EtcManagedArraysBit
if (0 != (ON_SubDMeshFragment::EtcControlNetQuadBit & m_vertex_count_etc))
{
const ON_3dVector A(m_ctrlnetN);
if (A.IsNotZero())
{
ON_3dVector B = xformNormals * A;
m_ctrlnetN[0] = B.x;
m_ctrlnetN[1] = B.y;
m_ctrlnetN[2] = B.z;
}
}
ON_GetPointListBoundingBox(3,0,count,(int)m_P_stride,m_P,&m_surface_bbox.m_min.x,&m_surface_bbox.m_max.x,false);
if (TextureCoordinatesExistForExperts()) {
this->SetTextureCoordinatesExistForExperts(bKeepTextures);
if (bKeepTextures) {
if (xformTextures.IsNotIdentity()) {
double* p = &this->m_ctrlnetT[0][0];
constexpr unsigned dim = sizeof(this->m_ctrlnetT[0]) / sizeof(this->m_ctrlnetT[0][0]);
constexpr unsigned tcount = sizeof(this->m_ctrlnetT) / sizeof(this->m_ctrlnetT[0]);
if (false == ON_TransformPointList(dim, false, tcount, dim, p, xformTextures))
return ON_SUBD_RETURN_ERROR(false);
}
}
else {
double* p = &this->m_ctrlnetT[0][0];
const double* p1 = p + sizeof(this->m_ctrlnetT) / sizeof(this->m_ctrlnetT[0][0]);
while (p < p1)
*p++ = ON_DBL_QNAN;
}
}
if (CurvaturesExistForExperts()) {
this->SetCurvaturesExistForExperts(bKeepCurvatures);
if (bKeepCurvatures) {
if (xformCurvatures.IsNotIdentity()) {
constexpr unsigned dim{sizeof(ON_SurfaceCurvature) / sizeof(double)};
constexpr unsigned ccount{sizeof(m_ctrlnetK) / sizeof(m_ctrlnetK[0])};
if (false == ON_TransformVectorList(dim, ccount, dim, (double*)m_ctrlnetK, xformCurvatures))
return ON_SUBD_RETURN_ERROR(false);
}
}
else {
this->m_ctrlnetK[0] = ON_SurfaceCurvature::Nan;
this->m_ctrlnetK[1] = ON_SurfaceCurvature::Nan;
this->m_ctrlnetK[2] = ON_SurfaceCurvature::Nan;
this->m_ctrlnetK[3] = ON_SurfaceCurvature::Nan;
}
}
if (ColorsExistForExperts()) {
this->SetColorsExistForExperts(bKeepColors);
if (bKeepColors) {
if (xformColors.IsNotIdentity()) {
for (int i = 0; i < 4; ++i) {
ON_Color& color{ m_ctrlnetC[i] };
ON_4dPoint rgba{ (double)color.Red(), (double)color.Green(), (double)color.Blue(), (double)color.Alpha() };
rgba.Transform(xformColors);
m_ctrlnetC->SetRGBA((int)rgba[0], (int)rgba[1], (int)rgba[2], (int)rgba[3]);
}
}
}
else {
this->m_ctrlnetC[0] = ON_Color::UnsetColor;
this->m_ctrlnetC[1] = ON_Color::UnsetColor;
this->m_ctrlnetC[2] = ON_Color::UnsetColor;
this->m_ctrlnetC[3] = ON_Color::UnsetColor;
}
}
return true;
}
bool ON_SubDMeshImpl::Transform(
const ON_Xform& xform
)
{
m_bbox = ON_BoundingBox::EmptyBoundingBox;
ON_BoundingBox bbox = ON_BoundingBox::EmptyBoundingBox;
for (const ON_SubDMeshFragment* fragment = m_first_fragment; nullptr != fragment; fragment = fragment->m_next_fragment)
{
if (false == const_cast<ON_SubDMeshFragment*>(fragment)->Transform(xform))
return ON_SUBD_RETURN_ERROR(false);
if (fragment == m_first_fragment)
bbox = fragment->m_surface_bbox;
else
bbox.Union(fragment->m_surface_bbox);
}
m_bbox = bbox;
ChangeContentSerialNumber();
return true;
}
bool ON_SubDMeshImpl::Transform(
bool bKeepCurvatures,
bool bKeepTextures,
bool bKeepColors,
const ON_Xform& xform,
const ON_Xform& xformNormals,
const ON_Xform& xformCurvatures,
const ON_Xform& xformTextures,
const ON_Xform& xformColors
)
{
//const bool bIsometry = (1 == xform.IsRigid()); // silence unused variable warning
m_bbox = ON_BoundingBox::EmptyBoundingBox;
ON_BoundingBox bbox = ON_BoundingBox::EmptyBoundingBox;
for ( const ON_SubDMeshFragment* fragment = m_first_fragment; nullptr != fragment; fragment = fragment->m_next_fragment)
{
if ( false == const_cast<ON_SubDMeshFragment*>(fragment)->Transform(
bKeepCurvatures, bKeepTextures, bKeepColors,
xform, xformNormals, xformCurvatures, xformTextures, xformColors
) )
return ON_SUBD_RETURN_ERROR(false);
if ( fragment == m_first_fragment )
bbox = fragment->m_surface_bbox;
else
bbox.Union(fragment->m_surface_bbox);
}
m_bbox = bbox;
ChangeContentSerialNumber();
return true;
}
//////////////////////////////////////////////////////////////////////////
//
//
//
//
ON_BoundingBox ON_SubDVertex::ControlNetBoundingBox() const
{
ON_BoundingBox bbox;
bbox.m_min = m_P;
bbox.m_max = bbox.m_min;
return bbox;
}
const ON_BoundingBox ON_SubDEdge::ControlNetBoundingBox() const
{
ON_BoundingBox bbox;
if (nullptr != m_vertex[0] && nullptr != m_vertex[1])
{
ON_3dPoint P[2];
P[0] = m_vertex[0]->m_P;
P[1] = m_vertex[1]->m_P;
ON_GetPointListBoundingBox(3, 0, 2, 3, &P[0].x, &bbox.m_min.x, &bbox.m_max.x,false);
}
return bbox;
}
const ON_BoundingBox ON_SubDFace::ControlNetBoundingBox() const
{
ON_BoundingBox bbox;
ON_3dPoint P[16];
unsigned int P_count = 0;
const unsigned int P_capacity = (unsigned int)(sizeof(P) / sizeof(P[0]));
bool bGrowBox = false;
const unsigned int count = m_edge_count;
for (unsigned int i = 0; i < count; i++)
{
const ON_SubDVertex* vertex = Vertex(i);
if (nullptr == vertex)
continue;
P[P_count++] = vertex->m_P;
if (P_count == P_capacity)
{
ON_GetPointListBoundingBox(3, 0, P_count, 3, &P[0].x, &bbox.m_min.x, &bbox.m_max.x, bGrowBox);
P_count = 0;
bGrowBox = true;
}
}
if ( P_count > 0)
ON_GetPointListBoundingBox(3, 0, P_count, 3, &P[0].x, &bbox.m_min.x, &bbox.m_max.x, bGrowBox);
return bbox;
}
const ON_SHA1_Hash ON_SubDVertex::TopologyHash(bool bIncludeSubdivisionProperties) const
{
ON_SHA1 sha1;
sha1.AccumulateInteger32(m_id);
if (bIncludeSubdivisionProperties)
{
sha1.AccumulateBytes(&this->m_vertex_tag, sizeof(this->m_vertex_tag));
sha1.AccumulateDoubleArray(3, this->m_P);
}
if (this->IsCreaseOrCorner())
bIncludeSubdivisionProperties = false;
if (nullptr != this->m_edges)
{
sha1.AccumulateInteger16(m_edge_count);
for (unsigned short vei = 0; vei < m_edge_count; ++vei)
{
const ON_SubDEdgePtr eptr = this->m_edges[vei];
const ON_SubDEdge* e = ON_SUBD_EDGE_POINTER(eptr.m_ptr);
if (nullptr == e)
{
sha1.AccumulateInteger32(ON_UNSET_UINT_INDEX);
}
else
{
sha1.AccumulateInteger32(e->m_id);
sha1.AccumulateInteger32((ON__UINT32)ON_SUBD_EDGE_DIRECTION(eptr.m_ptr));
if (bIncludeSubdivisionProperties)
{
// passing true here includes the edge tag in the hash.
const ON_SubDEdgeSharpness s = eptr.RelativeSharpness(true);
sha1.AccumulateDouble(s[0]);
sha1.AccumulateDouble(s[1]);
}
}
}
}
if (nullptr != this->m_faces)
{
sha1.AccumulateInteger16(m_face_count);
for (unsigned short vfi = 0; vfi < m_face_count; ++vfi)
{
const ON_SubDFace* f = this->m_faces[vfi];
sha1.AccumulateInteger32(nullptr == f ? ON_UNSET_UINT_INDEX : f->m_id);
}
}
return sha1.Hash();
}
ON__UINT32 ON_SubDVertex::TopologyCRC32(bool bIncludeSubdivisionProperties) const
{
return this->TopologyHash(bIncludeSubdivisionProperties).CRC32(0);
}
const ON_SHA1_Hash ON_SubDEdge::TopologyHash(bool bIncludeSubdivisionProperties) const
{
ON_SHA1 sha1;
sha1.AccumulateInteger32(m_id);
if (bIncludeSubdivisionProperties)
{
// passing true here includes the edge tag in the hash.
const ON_SubDEdgeSharpness s = this->Sharpness(true);
sha1.AccumulateDouble(s[0]);
sha1.AccumulateDouble(s[1]);
}
for (unsigned evi = 0; evi < 2; ++evi)
{
const ON_SubDVertex* v = this->m_vertex[evi];
if (nullptr == v)
sha1.AccumulateInteger32(ON_UNSET_UINT_INDEX);
else
{
sha1.AccumulateInteger32(v->m_id);
if (bIncludeSubdivisionProperties)
{
sha1.AccumulateDoubleArray(3, v->m_P);
if (v->IsDartOrCreaseOrCorner())
sha1.AccumulateDouble(this->m_sector_coefficient[evi]);
}
}
}
sha1.AccumulateInteger16(this->m_face_count);
const ON_SubDFacePtr* ef = this->m_face2;
for (unsigned short efi = 0; efi < this->m_face_count; ++efi)
{
if (2 == efi)
{
ef = this->m_facex;
if (nullptr == ef)
{
while (efi < this->m_face_count)
{
sha1.AccumulateInteger32(ON_UNSET_UINT_INDEX);
++efi;
}
break;
}
}
const ON_SubDFacePtr fptr = *ef++;
const ON_SubDFace* f = ON_SUBD_FACE_POINTER(fptr.m_ptr);
if (nullptr == f)
{
sha1.AccumulateInteger32(ON_UNSET_UINT_INDEX);
}
else
{
sha1.AccumulateInteger32(f->m_id);
sha1.AccumulateInteger32((ON__UINT32)ON_SUBD_FACE_DIRECTION(fptr.m_ptr));
}
}
return sha1.Hash();
}
ON__UINT32 ON_SubDEdge::TopologyCRC32(bool bIncludeSubdivisionProperties) const
{
return this->TopologyHash(bIncludeSubdivisionProperties).CRC32(0);
}
const ON_SHA1_Hash ON_SubDFace::TopologyHash(bool bIncludeSubdivisionProperties) const
{
ON_SHA1 sha1;
sha1.AccumulateInteger32(m_id);
const ON_SubDEdgePtr* fe = m_edge4;
for (unsigned short fei = 0; fei < m_edge_count; ++fei)
{
if (4 == fei)
{
fe = m_edgex;
if (nullptr == fe)
{
while (fei < this->m_edge_count)
{
sha1.AccumulateInteger32(ON_UNSET_UINT_INDEX);
++fei;
}
break;
}
}
const ON_SubDEdgePtr eptr = *fe++;
const ON_SubDEdge* e = ON_SUBD_EDGE_POINTER(eptr.m_ptr);
if (nullptr == e)
{
sha1.AccumulateInteger32(ON_UNSET_UINT_INDEX);
}
else
{
sha1.AccumulateInteger32(e->m_id);
const unsigned evi = (unsigned)ON_SUBD_EDGE_DIRECTION(eptr.m_ptr);
sha1.AccumulateInteger32(evi);
const ON_SubDVertex* v = e->m_vertex[evi];
if (nullptr == v)
sha1.AccumulateInteger32(ON_UNSET_UINT_INDEX);
else
{
sha1.AccumulateInteger32(v->m_id);
if (bIncludeSubdivisionProperties)
sha1.AccumulateDoubleArray(3, v->m_P);
}
}
}
return sha1.Hash();
}
ON__UINT32 ON_SubDFace::TopologyCRC32(bool bIncludeSubdivisionProperties) const
{
return this->TopologyHash(bIncludeSubdivisionProperties).CRC32(0);
}
bool ON_Symmetry::SameSymmetricObjectGeometry(const class ON_SubD* subd) const
{
const ON_SubDimple* subdimple = (nullptr != subd) ? subd->SubDimple() : nullptr;
return SameSymmetricObjectGeometry(subdimple);
}
bool ON_Symmetry::SameSymmetricObjectTopology(const class ON_SubD* subd) const
{
const ON_SubDimple* subdimple = (nullptr != subd) ? subd->SubDimple() : nullptr;
return SameSymmetricObjectTopology(subdimple);
}
bool ON_Symmetry::SameSymmetricObjectGeometry(const class ON_SubDimple* subdimple) const
{
if (this->IsSet() && m_symmetric_object_content_serial_number != 0 && nullptr != subdimple)
{
const ON__UINT64 subd_gsn = subdimple->GeometryContentSerialNumber();
if (m_symmetric_object_content_serial_number == subd_gsn)
return true; // speedy check worked
if (m_symmetric_object_geometry_hash.IsSet() && m_symmetric_object_geometry_hash == subdimple->SubDHash(ON_SubDHashType::Geometry, false).SubDHash())
return true;
}
return false;
}
bool ON_Symmetry::SameSymmetricObjectTopology(const class ON_SubDimple* subdimple) const
{
if (this->IsSet() && m_symmetric_object_content_serial_number != 0 && nullptr != subdimple)
{
const ON__UINT64 subd_gsn = subdimple->GeometryContentSerialNumber();
if (m_symmetric_object_content_serial_number == subd_gsn)
return true; // speedy check worked (same geometry in fact!)
if (m_symmetric_object_topology_hash.IsSet() && m_symmetric_object_topology_hash == subdimple->SubDHash(ON_SubDHashType::Topology, false).SubDHash())
return true;
}
return false;
}
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