OpenVDB: MetaMap.h Source File

OpenVDB 5.2.0

MetaMap.h
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1 //
3 // Copyright (c) 2012-2018 DreamWorks Animation LLC
4 //
5 // All rights reserved. This software is distributed under the
6 // Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
7 //
8 // Redistributions of source code must retain the above copyright
9 // and license notice and the following restrictions and disclaimer.
10 //
11 // * Neither the name of DreamWorks Animation nor the names of
12 // its contributors may be used to endorse or promote products derived
13 // from this software without specific prior written permission.
14 //
15 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
19 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL,
20 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
21 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 // IN NO EVENT SHALL THE COPYRIGHT HOLDERS' AND CONTRIBUTORS' AGGREGATE
27 // LIABILITY FOR ALL CLAIMS REGARDLESS OF THEIR BASIS EXCEED US$250.00.
28 //
30
31 #ifndef OPENVDB_METADATA_METAMAP_HAS_BEEN_INCLUDED
32 #define OPENVDB_METADATA_METAMAP_HAS_BEEN_INCLUDED
33
34 #include "Metadata.h"
35 #include "Types.h"
36 #include "Exceptions.h"
37 #include <iosfwd>
38 #include <map>
39
40
41 namespace openvdb {
42 OPENVDB_USE_VERSION_NAMESPACE
43 namespace OPENVDB_VERSION_NAME {
44
46 class OPENVDB_API MetaMap
47 {
48 public:
49 using Ptr = SharedPtr<MetaMap>;
50 using ConstPtr = SharedPtr<const MetaMap>;
51
52 using MetadataMap = std::map<Name, Metadata::Ptr>;
53 using MetaIterator = MetadataMap::iterator;
54 using ConstMetaIterator = MetadataMap::const_iterator;
56
57 MetaMap() {}
58 MetaMap(const MetaMap& other);
59 virtual ~MetaMap() {}
60
62 MetaMap::Ptr copyMeta() const;
64 MetaMap::Ptr deepCopyMeta() const;
65
67 MetaMap& operator=(const MetaMap&);
68
70 void readMeta(std::istream&);
72 void writeMeta(std::ostream&) const;
73
81 void insertMeta(const Name&, const Metadata& value);
85 void insertMeta(const MetaMap&);
86
88 void removeMeta(const Name&);
89
91 Metadata::Ptr operator[](const Name&);
94 Metadata::ConstPtr operator[](const Name&) const;
96
98 template<typename T> typename T::Ptr getMetadata(const Name&);
101 template<typename T> typename T::ConstPtr getMetadata(const Name&) const;
103
107 template<typename T> T& metaValue(const Name&);
108 template<typename T> const T& metaValue(const Name&) const;
109
110 // Functions for iterating over the metadata
111 MetaIterator beginMeta() { return mMeta.begin(); }
112 MetaIterator endMeta() { return mMeta.end(); }
113 ConstMetaIterator beginMeta() const { return mMeta.begin(); }
114 ConstMetaIterator endMeta() const { return mMeta.end(); }
115
116 void clearMetadata() { mMeta.clear(); }
117
118 size_t metaCount() const { return mMeta.size(); }
119
121 std::string str(const std::string& indent = "") const;
122
124 bool operator==(const MetaMap& other) const;
126 bool operator!=(const MetaMap& other) const { return !(*this == other); }
127
128 private:
132 template<typename T>
133 typename TypedMetadata<T>::Ptr getValidTypedMetadata(const Name&) const;
134
135 MetadataMap mMeta;
136 };
137
139 std::ostream& operator<<(std::ostream&, const MetaMap&);
140
141
143
144
145 inline Metadata::Ptr
146 MetaMap::operator[](const Name& name)
147 {
148 MetaIterator iter = mMeta.find(name);
149 return (iter == mMeta.end() ? Metadata::Ptr() : iter->second);
150 }
151
152 inline Metadata::ConstPtr
153 MetaMap::operator[](const Name &name) const
154 {
155 ConstMetaIterator iter = mMeta.find(name);
156 return (iter == mMeta.end() ? Metadata::Ptr() : iter->second);
157 }
158
159
161
162
163 template<typename T>
164 inline typename T::Ptr
165 MetaMap::getMetadata(const Name &name)
166 {
167 ConstMetaIterator iter = mMeta.find(name);
168 if (iter == mMeta.end()) return typename T::Ptr{};
169
170 // To ensure that we get valid conversion if the metadata pointers cross dso
171 // boundaries, we have to check the qualified typename and then do a static
172 // cast. This is slower than doing a dynamic_pointer_cast, but is safer when
173 // pointers cross dso boundaries.
174 if (iter->second->typeName() == T::staticTypeName()) {
175 return StaticPtrCast<T, Metadata>(iter->second);
176 } // else
177 return typename T::Ptr{};
178 }
179
180 template<typename T>
181 inline typename T::ConstPtr
182 MetaMap::getMetadata(const Name &name) const
183 {
184 ConstMetaIterator iter = mMeta.find(name);
185 if (iter == mMeta.end()) return typename T::ConstPtr{};
186
187 // To ensure that we get valid conversion if the metadata pointers cross dso
188 // boundaries, we have to check the qualified typename and then do a static
189 // cast. This is slower than doing a dynamic_pointer_cast, but is safer when
190 // pointers cross dso boundaries.
191 if (iter->second->typeName() == T::staticTypeName()) {
192 return StaticPtrCast<const T, const Metadata>(iter->second);
193 } // else
194 return typename T::ConstPtr{};
195 }
196
197
199
200
201 template<typename T>
202 inline typename TypedMetadata<T>::Ptr
203 MetaMap::getValidTypedMetadata(const Name &name) const
204 {
205 ConstMetaIterator iter = mMeta.find(name);
206 if (iter == mMeta.end()) OPENVDB_THROW(LookupError, "Cannot find metadata " << name);
207
208 // To ensure that we get valid conversion if the metadata pointers cross dso
209 // boundaries, we have to check the qualified typename and then do a static
210 // cast. This is slower than doing a dynamic_pointer_cast, but is safer when
211 // pointers cross dso boundaries.
212 typename TypedMetadata<T>::Ptr m;
213 if (iter->second->typeName() == TypedMetadata<T>::staticTypeName()) {
214 m = StaticPtrCast<TypedMetadata<T>, Metadata>(iter->second);
215 }
216 if (!m) OPENVDB_THROW(TypeError, "Invalid type for metadata " << name);
217 return m;
218 }
219
220
222
223
224 template<typename T>
225 inline T&
226 MetaMap::metaValue(const Name &name)
227 {
228 typename TypedMetadata<T>::Ptr m = getValidTypedMetadata<T>(name);
229 return m->value();
230 }
231
232
233 template<typename T>
234 inline const T&
235 MetaMap::metaValue(const Name &name) const
236 {
237 typename TypedMetadata<T>::Ptr m = getValidTypedMetadata<T>(name);
238 return m->value();
239 }
240
241 } // namespace OPENVDB_VERSION_NAME
242 } // namespace openvdb
243
244 #endif // OPENVDB_METADATA_METAMAP_HAS_BEEN_INCLUDED
245
246 // Copyright (c) 2012-2018 DreamWorks Animation LLC
247 // All rights reserved. This software is distributed under the
248 // Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
OPENVDB_API
#define OPENVDB_API
Helper macros for defining library symbol visibility.
Definition: Platform.h:194
Types.h
openvdb::v5_2::MetaMap::MetaIterator
MetadataMap::iterator MetaIterator
Definition: MetaMap.h:53
openvdb::v5_2::TypedMetadata::value
T & value()
Return this metadata&#39;s value.
Definition: Metadata.h:299
Metadata.h
openvdb::v5_2::MetaMap::beginMeta
ConstMetaIterator beginMeta() const
Definition: MetaMap.h:113
openvdb::v5_2::MetaMap::endMeta
ConstMetaIterator endMeta() const
Definition: MetaMap.h:114
openvdb::v5_2::MetaMap::operator!=
bool operator!=(const MetaMap &other) const
Return true if the given map is different from this map.
Definition: MetaMap.h:126
OPENVDB_THROW
#define OPENVDB_THROW(exception, message)
Definition: Exceptions.h:109
openvdb::v5_2::Metadata::Ptr
SharedPtr< Metadata > Ptr
Definition: Metadata.h:53
openvdb::v5_2::MetaMap::metaValue
T & metaValue(const Name &)
Return a reference to the value of type T stored in the given metadata field.
Definition: MetaMap.h:226
openvdb::v5_2::Name
std::string Name
Definition: Name.h:44
openvdb::v5_2::LookupError
Definition: Exceptions.h:87
openvdb::v5_2::TypeError
Definition: Exceptions.h:91
openvdb::v5_2::MetaMap::~MetaMap
virtual ~MetaMap()
Definition: MetaMap.h:59
openvdb::v5_2::SharedPtr
std::shared_ptr< T > SharedPtr
Definition: Types.h:139
openvdb::v5_2::MetaMap::beginMeta
MetaIterator beginMeta()
Definition: MetaMap.h:111
openvdb::v5_2::operator<<
std::ostream & operator<<(std::ostream &, const MetaMap &)
Write a MetaMap to an output stream.
openvdb::v5_2::MetaMap
Container that maps names (strings) to values of arbitrary types.
Definition: MetaMap.h:46
openvdb::v5_2::Metadata::ConstPtr
SharedPtr< const Metadata > ConstPtr
Definition: Metadata.h:54
openvdb::v5_2::MetaMap::ConstPtr
SharedPtr< const MetaMap > ConstPtr
Definition: MetaMap.h:50
openvdb::v5_2::MetaMap::operator[]
Metadata::Ptr operator[](const Name &)
Return a pointer to the metadata with the given name. If no such field exists, return a null pointer...
Definition: MetaMap.h:146
Exceptions.h
OPENVDB_VERSION_NAME
#define OPENVDB_VERSION_NAME
The version namespace name for this library version.
Definition: version.h:136
openvdb::v5_2::MetaMap::metaCount
size_t metaCount() const
Definition: MetaMap.h:118
openvdb
Definition: Exceptions.h:40
openvdb::v5_2::TypedMetadata::staticTypeName
static Name staticTypeName()
Definition: Metadata.h:197
openvdb::v5_2::MetaMap::ConstMetaIterator
MetadataMap::const_iterator ConstMetaIterator
Definition: MetaMap.h:55
openvdb::v5_2::MetaMap::Ptr
SharedPtr< MetaMap > Ptr
Definition: MetaMap.h:49
openvdb::v5_2::math::operator==
bool operator==(const Vec3< T0 > &v0, const Vec3< T1 > &v1)
Equality operator, does exact floating point comparisons.
Definition: Vec3.h:488
openvdb::v5_2::MetaMap::endMeta
MetaIterator endMeta()
Definition: MetaMap.h:112
openvdb::v5_2::MetaMap::getMetadata
T::Ptr getMetadata(const Name &)
Return a pointer to a TypedMetadata object of type T and with the given name. If no such field exists...
Definition: MetaMap.h:165
openvdb::v5_2::TypedMetadata::Ptr
SharedPtr< TypedMetadata< T > > Ptr
Definition: Metadata.h:174
openvdb::v5_2::MetaMap::MetadataMap
std::map< Name, Metadata::Ptr > MetadataMap
Definition: MetaMap.h:52
openvdb::v5_2::Metadata
Base class for storing metadata information in a grid.
Definition: Metadata.h:50
openvdb::v5_2::MetaMap::clearMetadata
void clearMetadata()
Definition: MetaMap.h:116
OPENVDB_USE_VERSION_NAMESPACE
#define OPENVDB_USE_VERSION_NAMESPACE
Definition: version.h:188
openvdb::v5_2::MetaMap::MetaMap
MetaMap()
Definition: MetaMap.h:57