GCC Code Coverage Report

Directory: ./
File: openvdb/openvdb/Types.h
Date: 2022-07-25 17:40:05
Exec Total Coverage
Lines: 30 30 100.0%
Functions: 4 20 20.0%
Branches: 533 1759 30.3%
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1 // Copyright Contributors to the OpenVDB Project
2 // SPDX-License-Identifier: MPL-2.0
3
4 #ifndef OPENVDB_TYPES_HAS_BEEN_INCLUDED
5 #define OPENVDB_TYPES_HAS_BEEN_INCLUDED
6
7 #include "version.h"
8 #include "Platform.h"
9 #include "TypeList.h" // backwards compat
10
11 #ifdef OPENVDB_USE_IMATH_HALF
12 #ifdef OPENVDB_IMATH_VERSION
13 #include <Imath/half.h>
14 #else
15 #include <OpenEXR/half.h>
16 #endif
17 namespace openvdb {
18 OPENVDB_USE_VERSION_NAMESPACE
19 namespace OPENVDB_VERSION_NAME {
20 namespace math {
21 using half = half;
22 }}}
23 #else
24 #include <openvdb/math/Half.h>
25 namespace openvdb {
26 OPENVDB_USE_VERSION_NAMESPACE
27 namespace OPENVDB_VERSION_NAME {
28 namespace math {
29 using half = internal::half;
30 }}}
31 #endif
32
33 #include <openvdb/math/Math.h>
34 #include <openvdb/math/BBox.h>
35 #include <openvdb/math/Quat.h>
36 #include <openvdb/math/Vec2.h>
37 #include <openvdb/math/Vec3.h>
38 #include <openvdb/math/Vec4.h>
39 #include <openvdb/math/Mat3.h>
40 #include <openvdb/math/Mat4.h>
41 #include <openvdb/math/Coord.h>
42 #include <cstdint>
43 #include <memory>
44 #include <type_traits>
45
46
47 namespace openvdb {
48 OPENVDB_USE_VERSION_NAMESPACE
49 namespace OPENVDB_VERSION_NAME {
50
51 // One-dimensional scalar types
52 using Index32 = uint32_t;
53 using Index64 = uint64_t;
54 using Index = Index32;
55 using Int16 = int16_t;
56 using Int32 = int32_t;
57 using Int64 = int64_t;
58 using Int = Int32;
59 using Byte = unsigned char;
60 using Real = double;
61
62 // Two-dimensional vector types
63 using Vec2R = math::Vec2<Real>;
64 using Vec2I = math::Vec2<Index32>;
65 using Vec2f = math::Vec2<float>;
66 using Vec2H = math::Vec2<math::half>;
67 using math::Vec2i;
68 using math::Vec2s;
69 using math::Vec2d;
70
71 // Three-dimensional vector types
72 using Vec3R = math::Vec3<Real>;
73 using Vec3I = math::Vec3<Index32>;
74 using Vec3f = math::Vec3<float>;
75 using Vec3H = math::Vec3<math::half>;
76 using Vec3U8 = math::Vec3<uint8_t>;
77 using Vec3U16 = math::Vec3<uint16_t>;
78 using math::Vec3i;
79 using math::Vec3s;
80 using math::Vec3d;
81
82 using math::Coord;
83 using math::CoordBBox;
84 using BBoxd = math::BBox<Vec3d>;
85
86 // Four-dimensional vector types
87 using Vec4R = math::Vec4<Real>;
88 using Vec4I = math::Vec4<Index32>;
89 using Vec4f = math::Vec4<float>;
90 using Vec4H = math::Vec4<math::half>;
91 using math::Vec4i;
92 using math::Vec4s;
93 using math::Vec4d;
94
95 // Three-dimensional matrix types
96 using Mat3R = math::Mat3<Real>;
97 using math::Mat3s;
98 using math::Mat3d;
99
100 // Four-dimensional matrix types
101 using Mat4R = math::Mat4<Real>;
102 using math::Mat4s;
103 using math::Mat4d;
104
105 // Quaternions
106 using QuatR = math::Quat<Real>;
107 using math::Quats;
108 using math::Quatd;
109
110 // Dummy type for a voxel with a binary mask value, e.g. the active state
111 class ValueMask {};
112
113 // Use STL shared pointers from OpenVDB 4 on.
114 template<typename T> using SharedPtr = std::shared_ptr<T>;
115 template<typename T> using WeakPtr = std::weak_ptr<T>;
116
117 /// @brief Return a new shared pointer that points to the same object
118 /// as the given pointer but with possibly different <TT>const</TT>-ness.
119 /// @par Example:
120 /// @code
121 /// FloatGrid::ConstPtr grid = ...;
122 /// FloatGrid::Ptr nonConstGrid = ConstPtrCast<FloatGrid>(grid);
123 /// FloatGrid::ConstPtr constGrid = ConstPtrCast<const FloatGrid>(nonConstGrid);
124 /// @endcode
125 template<typename T, typename U> inline SharedPtr<T>
126 56078 ConstPtrCast(const SharedPtr<U>& ptr) { return std::const_pointer_cast<T, U>(ptr); }
127
128 /// @brief Return a new shared pointer that is either null or points to
129 /// the same object as the given pointer after a @c dynamic_cast.
130 /// @par Example:
131 /// @code
132 /// GridBase::ConstPtr grid = ...;
133 /// FloatGrid::ConstPtr floatGrid = DynamicPtrCast<const FloatGrid>(grid);
134 /// @endcode
135 template<typename T, typename U> inline SharedPtr<T>
136 27 DynamicPtrCast(const SharedPtr<U>& ptr) { return std::dynamic_pointer_cast<T, U>(ptr); }
137
138 /// @brief Return a new shared pointer that points to the same object
139 /// as the given pointer after a @c static_cast.
140 /// @par Example:
141 /// @code
142 /// FloatGrid::Ptr floatGrid = ...;
143 /// GridBase::Ptr grid = StaticPtrCast<GridBase>(floatGrid);
144 /// @endcode
145 template<typename T, typename U> inline SharedPtr<T>
146 1515739 StaticPtrCast(const SharedPtr<U>& ptr) { return std::static_pointer_cast<T, U>(ptr); }
147
148
149 ////////////////////////////////////////
150
151
152 /// @brief Integer wrapper, required to distinguish PointIndexGrid and
153 /// PointDataGrid from Int32Grid and Int64Grid
154 /// @note @c Kind is a dummy parameter used to create distinct types.
155 template<typename IntType_, Index Kind>
156 struct PointIndex
157 {
158 static_assert(std::is_integral<IntType_>::value, "PointIndex requires an integer value type");
159
160 using IntType = IntType_;
161
162
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 94249687 PointIndex(IntType i = IntType(0)): mIndex(i) {}
163
164 /// Explicit type conversion constructor
165
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 5572229 template<typename T> explicit PointIndex(T i): mIndex(static_cast<IntType>(i)) {}
166
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 99126785 operator IntType() const { return mIndex; }
168
169 /// Needed to support the <tt>(zeroVal<PointIndex>() + val)</tt> idiom.
170 template<typename T>
171 1272310 PointIndex operator+(T x) { return PointIndex(mIndex + IntType(x)); }
172
173 private:
174 IntType mIndex;
175 };
176
177
178 using PointIndex32 = PointIndex<Index32, 0>;
179 using PointIndex64 = PointIndex<Index64, 0>;
180
181 using PointDataIndex32 = PointIndex<Index32, 1>;
182 using PointDataIndex64 = PointIndex<Index64, 1>;
183
184
185 ////////////////////////////////////////
186
187
188 /// @brief Helper metafunction used to determine if the first template
189 /// parameter is a specialization of the class template given in the second
190 /// template parameter
191 template <typename T, template <typename...> class Template>
192 struct IsSpecializationOf: public std::false_type {};
193
194 template <typename... Args, template <typename...> class Template>
195 struct IsSpecializationOf<Template<Args...>, Template>: public std::true_type {};
196
197
198 ////////////////////////////////////////
199
200
201 template<typename T, bool = IsSpecializationOf<T, math::Vec2>::value ||
202 IsSpecializationOf<T, math::Vec3>::value ||
203 IsSpecializationOf<T, math::Vec4>::value>
204 struct VecTraits
205 {
206 static const bool IsVec = true;
207 static const int Size = T::size;
208 using ElementType = typename T::ValueType;
209 };
210
211 template<typename T>
212 struct VecTraits<T, false>
213 {
214 static const bool IsVec = false;
215 static const int Size = 1;
216 using ElementType = T;
217 };
218
219 template<typename T, bool = IsSpecializationOf<T, math::Quat>::value>
220 struct QuatTraits
221 {
222 static const bool IsQuat = true;
223 static const int Size = T::size;
224 using ElementType = typename T::ValueType;
225 };
226
227 template<typename T>
228 struct QuatTraits<T, false>
229 {
230 static const bool IsQuat = false;
231 static const int Size = 1;
232 using ElementType = T;
233 };
234
235 template<typename T, bool = IsSpecializationOf<T, math::Mat3>::value ||
236 IsSpecializationOf<T, math::Mat4>::value>
237 struct MatTraits
238 {
239 static const bool IsMat = true;
240 static const int Size = T::size;
241 using ElementType = typename T::ValueType;
242 };
243
244 template<typename T>
245 struct MatTraits<T, false>
246 {
247 static const bool IsMat = false;
248 static const int Size = 1;
249 using ElementType = T;
250 };
251
252 template<typename T, bool = VecTraits<T>::IsVec ||
253 QuatTraits<T>::IsQuat ||
254 MatTraits<T>::IsMat>
255 struct ValueTraits
256 {
257 static const bool IsVec = VecTraits<T>::IsVec;
258 static const bool IsQuat = QuatTraits<T>::IsQuat;
259 static const bool IsMat = MatTraits<T>::IsMat;
260 static const bool IsScalar = false;
261 static const int Size = T::size;
262 static const int Elements = IsMat ? Size*Size : Size;
263 using ElementType = typename T::ValueType;
264 };
265
266 template<typename T>
267 struct ValueTraits<T, false>
268 {
269 static const bool IsVec = false;
270 static const bool IsQuat = false;
271 static const bool IsMat = false;
272 static const bool IsScalar = true;
273 static const int Size = 1;
274 static const int Elements = 1;
275 using ElementType = T;
276 };
277
278
279 /// @brief Conversion classes for changing the underlying type of VDB types
280 /// @{
281 template<typename T, typename SubT> struct ConvertElementType { using Type = SubT; };
282 template<typename T, typename SubT> struct ConvertElementType<math::Vec2<T>, SubT> { using Type = math::Vec2<SubT>; };
283 template<typename T, typename SubT> struct ConvertElementType<math::Vec3<T>, SubT> { using Type = math::Vec3<SubT>; };
284 template<typename T, typename SubT> struct ConvertElementType<math::Vec4<T>, SubT> { using Type = math::Vec4<SubT>; };
285 template<typename T, typename SubT> struct ConvertElementType<math::Quat<T>, SubT> { using Type = math::Quat<SubT>; };
286 template<typename T, typename SubT> struct ConvertElementType<math::Mat3<T>, SubT> { using Type = math::Mat3<SubT>; };
287 template<typename T, typename SubT> struct ConvertElementType<math::Mat4<T>, SubT> { using Type = math::Mat4<SubT>; };
288 /// @}
289
290 namespace types_internal
291 {
292 template <size_t Bits, bool Signed> struct int_t;
293 template <> struct int_t<8ul, true> { using type = int8_t; };
294 template <> struct int_t<16ul, true> { using type = int16_t; };
295 template <> struct int_t<32ul, true> { using type = int32_t; };
296 template <> struct int_t<64ul, true> { using type = int64_t; };
297 template <> struct int_t<8ul, false> { using type = uint8_t; };
298 template <> struct int_t<16ul, false> { using type = uint16_t; };
299 template <> struct int_t<32ul, false> { using type = uint32_t; };
300 template <> struct int_t<64ul, false> { using type = uint64_t; };
301
302 template <size_t Bits> struct flt_t;
303 template <> struct flt_t<16ul> { using type = math::half; };
304 template <> struct flt_t<32ul> { using type = float; };
305 template <> struct flt_t<64ul> { using type = double; };
306 }
307
308 /// @brief Promotion classes which provide an interface for elevating and
309 /// demoting a scalar or VDB type to a higher or lower precision. Integer
310 /// types preserve their sign. Types promotion are only valid between
311 /// 8 to 64 bits (long doubles are not supported).
312 /// @{
313 template<typename T>
314 struct PromoteType
315 {
316 private:
317 template <size_t bits>
318 using TypeT = typename std::conditional<std::is_integral<T>::value,
319 types_internal::int_t<bits, std::is_signed<T>::value>,
320 types_internal::flt_t<std::max(size_t(16), bits)>>::type;
321 public:
322 static_assert(sizeof(T) <= 8ul, "Unsupported source type for promotion");
323
324 #define OPENVDB_TARGET_BITS(SHIFT, PROMOTE) \
325 std::max(size_t(8), \
326 std::min(size_t(64), (PROMOTE ? size_t(8)*(sizeof(T)<<SHIFT) : \
327 size_t(8)*(sizeof(T)>>SHIFT))))
328 template <size_t Shift = ~0UL> using Promote = typename TypeT<OPENVDB_TARGET_BITS(Shift, true)>::type;
329 template <size_t Shift = ~0UL> using Demote = typename TypeT<OPENVDB_TARGET_BITS(Shift, false)>::type;
330 #undef OPENVDB_TARGET_BITS
331
332 using Highest = typename TypeT<64ul>::type;
333 using Lowest = typename TypeT<8ul>::type;
334 using Next = Promote<1>;
335 using Previous = Demote<1>;
336 };
337
338 template <typename T, template <typename> class ContainerT>
339 struct PromoteContainerType
340 {
341 template <size_t Shift = ~0UL> using Promote = ContainerT<typename PromoteType<T>::template Promote<Shift>>;
342 template <size_t Shift = ~0UL> using Demote = ContainerT<typename PromoteType<T>::template Demote<Shift>>;
343 using Highest = ContainerT<typename PromoteType<T>::Highest>;
344 using Lowest = ContainerT<typename PromoteType<T>::Lowest>;
345 using Next = ContainerT<typename PromoteType<T>::Next>;
346 using Previous = ContainerT<typename PromoteType<T>::Previous>;
347 };
348
349 template<typename T> struct PromoteType<math::Vec2<T>> : public PromoteContainerType<T, math::Vec2> {};
350 template<typename T> struct PromoteType<math::Vec3<T>> : public PromoteContainerType<T, math::Vec3> {};
351 template<typename T> struct PromoteType<math::Vec4<T>> : public PromoteContainerType<T, math::Vec4> {};
352 template<typename T> struct PromoteType<math::Quat<T>> : public PromoteContainerType<T, math::Quat> {};
353 template<typename T> struct PromoteType<math::Mat3<T>> : public PromoteContainerType<T, math::Mat3> {};
354 template<typename T> struct PromoteType<math::Mat4<T>> : public PromoteContainerType<T, math::Mat4> {};
355 /// @}
356
357
358 ////////////////////////////////////////
359
360
361 /// @brief CanConvertType<FromType, ToType>::value is @c true if a value
362 /// of type @a ToType can be constructed from a value of type @a FromType.
363 template<typename FromType, typename ToType>
364 struct CanConvertType { enum { value = std::is_constructible<ToType, FromType>::value }; };
365
366 // Specializations for vector types, which can be constructed from values
367 // of their own ValueTypes (or values that can be converted to their ValueTypes),
368 // but only explicitly
369 template<typename T> struct CanConvertType<T, math::Vec2<T> > { enum { value = true }; };
370 template<typename T> struct CanConvertType<T, math::Vec3<T> > { enum { value = true }; };
371 template<typename T> struct CanConvertType<T, math::Vec4<T> > { enum { value = true }; };
372 template<typename T> struct CanConvertType<math::Vec2<T>, math::Vec2<T> > { enum {value = true}; };
373 template<typename T> struct CanConvertType<math::Vec3<T>, math::Vec3<T> > { enum {value = true}; };
374 template<typename T> struct CanConvertType<math::Vec4<T>, math::Vec4<T> > { enum {value = true}; };
375 template<typename T0, typename T1>
376 struct CanConvertType<T0, math::Vec2<T1> > { enum { value = CanConvertType<T0, T1>::value }; };
377 template<typename T0, typename T1>
378 struct CanConvertType<T0, math::Vec3<T1> > { enum { value = CanConvertType<T0, T1>::value }; };
379 template<typename T0, typename T1>
380 struct CanConvertType<T0, math::Vec4<T1> > { enum { value = CanConvertType<T0, T1>::value }; };
381 template<> struct CanConvertType<PointIndex32, PointDataIndex32> { enum {value = true}; };
382 template<> struct CanConvertType<PointDataIndex32, PointIndex32> { enum {value = true}; };
383 template<typename T>
384 struct CanConvertType<T, ValueMask> { enum {value = CanConvertType<T, bool>::value}; };
385 template<typename T>
386 struct CanConvertType<ValueMask, T> { enum {value = CanConvertType<bool, T>::value}; };
387
388
389 ////////////////////////////////////////
390
391
392 /// @brief CopyConstness<T1, T2>::Type is either <tt>const T2</tt>
393 /// or @c T2 with no @c const qualifier, depending on whether @c T1 is @c const.
394 /// @details For example,
395 /// - CopyConstness<int, int>::Type is @c int
396 /// - CopyConstness<int, const int>::Type is @c int
397 /// - CopyConstness<const int, int>::Type is <tt>const int</tt>
398 /// - CopyConstness<const int, const int>::Type is <tt>const int</tt>
399 template<typename FromType, typename ToType> struct CopyConstness {
400 using Type = typename std::remove_const<ToType>::type;
401 };
402
403 /// @cond OPENVDB_DOCS_INTERNAL
404 template<typename FromType, typename ToType> struct CopyConstness<const FromType, ToType> {
405 using Type = const ToType;
406 };
407 /// @endcond
408
409
410 ////////////////////////////////////////
411
412
413 // Add new items to the *end* of this list, and update NUM_GRID_CLASSES.
414 enum GridClass {
415 GRID_UNKNOWN = 0,
416 GRID_LEVEL_SET,
417 GRID_FOG_VOLUME,
418 GRID_STAGGERED
419 };
420 enum { NUM_GRID_CLASSES = GRID_STAGGERED + 1 };
421
422 static const Real LEVEL_SET_HALF_WIDTH = 3;
423
424 /// The type of a vector determines how transforms are applied to it:
425 /// <dl>
426 /// <dt><b>Invariant</b>
427 /// <dd>Does not transform (e.g., tuple, uvw, color)
428 ///
429 /// <dt><b>Covariant</b>
430 /// <dd>Apply inverse-transpose transformation: @e w = 0, ignores translation
431 /// (e.g., gradient/normal)
432 ///
433 /// <dt><b>Covariant Normalize</b>
434 /// <dd>Apply inverse-transpose transformation: @e w = 0, ignores translation,
435 /// vectors are renormalized (e.g., unit normal)
436 ///
437 /// <dt><b>Contravariant Relative</b>
438 /// <dd>Apply "regular" transformation: @e w = 0, ignores translation
439 /// (e.g., displacement, velocity, acceleration)
440 ///
441 /// <dt><b>Contravariant Absolute</b>
442 /// <dd>Apply "regular" transformation: @e w = 1, vector translates (e.g., position)
443 /// </dl>
444 enum VecType {
445 VEC_INVARIANT = 0,
446 VEC_COVARIANT,
447 VEC_COVARIANT_NORMALIZE,
448 VEC_CONTRAVARIANT_RELATIVE,
449 VEC_CONTRAVARIANT_ABSOLUTE
450 };
451 enum { NUM_VEC_TYPES = VEC_CONTRAVARIANT_ABSOLUTE + 1 };
452
453
454 /// Specify how grids should be merged during certain (typically multithreaded) operations.
455 /// <dl>
456 /// <dt><b>MERGE_ACTIVE_STATES</b>
457 /// <dd>The output grid is active wherever any of the input grids is active.
458 ///
459 /// <dt><b>MERGE_NODES</b>
460 /// <dd>The output grid's tree has a node wherever any of the input grids' trees
461 /// has a node, regardless of any active states.
462 ///
463 /// <dt><b>MERGE_ACTIVE_STATES_AND_NODES</b>
464 /// <dd>The output grid is active wherever any of the input grids is active,
465 /// and its tree has a node wherever any of the input grids' trees has a node.
466 /// </dl>
467 enum MergePolicy {
468 MERGE_ACTIVE_STATES = 0,
469 MERGE_NODES,
470 MERGE_ACTIVE_STATES_AND_NODES
471 };
472
473
474 ////////////////////////////////////////
475
476
477
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 6 template<typename T> const char* typeNameAsString() { return typeid(T).name(); }
478 template<> inline const char* typeNameAsString<bool>() { return "bool"; }
479 template<> inline const char* typeNameAsString<ValueMask>() { return "mask"; }
480 template<> inline const char* typeNameAsString<math::half>() { return "half"; }
481 template<> inline const char* typeNameAsString<float>() { return "float"; }
482 template<> inline const char* typeNameAsString<double>() { return "double"; }
483 template<> inline const char* typeNameAsString<int8_t>() { return "int8"; }
484 template<> inline const char* typeNameAsString<uint8_t>() { return "uint8"; }
485 template<> inline const char* typeNameAsString<int16_t>() { return "int16"; }
486 template<> inline const char* typeNameAsString<uint16_t>() { return "uint16"; }
487 template<> inline const char* typeNameAsString<int32_t>() { return "int32"; }
488 template<> inline const char* typeNameAsString<uint32_t>() { return "uint32"; }
489 template<> inline const char* typeNameAsString<int64_t>() { return "int64"; }
490 template<> inline const char* typeNameAsString<Vec2i>() { return "vec2i"; }
491 template<> inline const char* typeNameAsString<Vec2s>() { return "vec2s"; }
492 template<> inline const char* typeNameAsString<Vec2d>() { return "vec2d"; }
493 template<> inline const char* typeNameAsString<Vec3U8>() { return "vec3u8"; }
494 template<> inline const char* typeNameAsString<Vec3U16>() { return "vec3u16"; }
495 template<> inline const char* typeNameAsString<Vec3i>() { return "vec3i"; }
496 template<> inline const char* typeNameAsString<Vec3f>() { return "vec3s"; }
497 template<> inline const char* typeNameAsString<Vec3d>() { return "vec3d"; }
498 template<> inline const char* typeNameAsString<Vec4i>() { return "vec4i"; }
499 template<> inline const char* typeNameAsString<Vec4f>() { return "vec4s"; }
500 template<> inline const char* typeNameAsString<Vec4d>() { return "vec4d"; }
501 template<> inline const char* typeNameAsString<std::string>() { return "string"; }
502 template<> inline const char* typeNameAsString<Mat3s>() { return "mat3s"; }
503 template<> inline const char* typeNameAsString<Mat3d>() { return "mat3d"; }
504 template<> inline const char* typeNameAsString<Mat4s>() { return "mat4s"; }
505 template<> inline const char* typeNameAsString<Mat4d>() { return "mat4d"; }
506 template<> inline const char* typeNameAsString<math::Quats>() { return "quats"; }
507 template<> inline const char* typeNameAsString<math::Quatd>() { return "quatd"; }
508 template<> inline const char* typeNameAsString<PointIndex32>() { return "ptidx32"; }
509 template<> inline const char* typeNameAsString<PointIndex64>() { return "ptidx64"; }
510 template<> inline const char* typeNameAsString<PointDataIndex32>() { return "ptdataidx32"; }
511 template<> inline const char* typeNameAsString<PointDataIndex64>() { return "ptdataidx64"; }
512
513
514 ////////////////////////////////////////
515
516
517 /// @brief This struct collects both input and output arguments to "grid combiner" functors
518 /// used with the tree::TypedGrid::combineExtended() and combine2Extended() methods.
519 /// AValueType and BValueType are the value types of the two grids being combined.
520 ///
521 /// @see openvdb/tree/Tree.h for usage information.
522 ///
523 /// Setter methods return references to this object, to facilitate the following usage:
524 /// @code
525 /// CombineArgs<float> args;
526 /// myCombineOp(args.setARef(aVal).setBRef(bVal).setAIsActive(true).setBIsActive(false));
527 /// @endcode
528 template<typename AValueType, typename BValueType = AValueType>
529 class CombineArgs
530 {
531 public:
532 using AValueT = AValueType;
533 using BValueT = BValueType;
534
535 870 CombineArgs()
536 : mAValPtr(nullptr)
537 , mBValPtr(nullptr)
538 , mResultValPtr(&mResultVal)
539 , mAIsActive(false)
540 , mBIsActive(false)
541
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 870 , mResultIsActive(false)
542 {
543 }
544
545 /// Use this constructor when the result value is stored externally.
546 300017 CombineArgs(const AValueType& a, const BValueType& b, AValueType& result,
547 bool aOn = false, bool bOn = false)
548 : mAValPtr(&a)
549 , mBValPtr(&b)
550 , mResultValPtr(&result)
551 , mAIsActive(aOn)
552 300017 , mBIsActive(bOn)
553 {
554 this->updateResultActive();
555 }
556
557 /// Use this constructor when the result value should be stored in this struct.
558 CombineArgs(const AValueType& a, const BValueType& b, bool aOn = false, bool bOn = false)
559 : mAValPtr(&a)
560 , mBValPtr(&b)
561 , mResultValPtr(&mResultVal)
562 , mAIsActive(aOn)
563 , mBIsActive(bOn)
564 {
565 this->updateResultActive();
566 }
567
568 /// Get the A input value.
569
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 1813784 const AValueType& a() const { return *mAValPtr; }
570 /// Get the B input value.
571
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 1096005 const BValueType& b() const { return *mBValPtr; }
572 //@{
573 /// Get the output value.
574 const AValueType& result() const { return *mResultValPtr; }
575
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 1547552 AValueType& result() { return *mResultValPtr; }
576 //@}
577
578 /// Set the output value.
579 1701666 CombineArgs& setResult(const AValueType& val) { *mResultValPtr = val; return *this; }
580
581 /// Redirect the A value to a new external source.
582
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 2000625 CombineArgs& setARef(const AValueType& a) { mAValPtr = &a; return *this; }
583 /// Redirect the B value to a new external source.
584
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 1535273 CombineArgs& setBRef(const BValueType& b) { mBValPtr = &b; return *this; }
585 /// Redirect the result value to a new external destination.
586
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 369152 CombineArgs& setResultRef(AValueType& val) { mResultValPtr = &val; return *this; }
587
588 /// @return true if the A value is active
589
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 450541 bool aIsActive() const { return mAIsActive; }
590 /// @return true if the B value is active
591
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 450527 bool bIsActive() const { return mBIsActive; }
592 /// @return true if the output value is active
593
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 2000113 bool resultIsActive() const { return mResultIsActive; }
594
595 /// Set the active state of the A value.
596 1024 CombineArgs& setAIsActive(bool b) { mAIsActive = b; updateResultActive(); return *this; }
597 /// Set the active state of the B value.
598 1656722 CombineArgs& setBIsActive(bool b) { mBIsActive = b; updateResultActive(); return *this; }
599 /// Set the active state of the output value.
600
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 300529 CombineArgs& setResultIsActive(bool b) { mResultIsActive = b; return *this; }
601
602 protected:
603 /// By default, the result value is active if either of the input values is active,
604 /// but this behavior can be overridden by calling setResultIsActive().
605
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 5722283 void updateResultActive() { mResultIsActive = mAIsActive || mBIsActive; }
606
607 const AValueType* mAValPtr; // pointer to input value from A grid
608 const BValueType* mBValPtr; // pointer to input value from B grid
609 AValueType mResultVal; // computed output value (unused if stored externally)
610 AValueType* mResultValPtr; // pointer to either mResultVal or an external value
611 bool mAIsActive, mBIsActive; // active states of A and B values
612 bool mResultIsActive; // computed active state (default: A active || B active)
613 };
614
615
616 /// This struct adapts a "grid combiner" functor to swap the A and B grid values
617 /// (e.g., so that if the original functor computes a + 2 * b, the adapted functor
618 /// will compute b + 2 * a).
619 template<typename ValueType, typename CombineOp>
620 struct SwappedCombineOp
621 {
622
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 361 SwappedCombineOp(CombineOp& _op): op(_op) {}
623
624
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 300017 void operator()(CombineArgs<ValueType>& args)
625 {
626 CombineArgs<ValueType> swappedArgs(args.b(), args.a(), args.result(),
627 args.bIsActive(), args.aIsActive());
628 300017 op(swappedArgs);
629 args.setResultIsActive(swappedArgs.resultIsActive());
630 300017 }
631
632 CombineOp& op;
633 };
634
635
636 ////////////////////////////////////////
637
638
639 /// @brief Tag dispatch class that distinguishes shallow copy constructors
640 /// from deep copy constructors
641 class ShallowCopy {};
642 /// @brief Tag dispatch class that distinguishes topology copy constructors
643 /// from deep copy constructors
644 class TopologyCopy {};
645 /// @brief Tag dispatch class that distinguishes constructors that deep copy
646 class DeepCopy {};
647 /// @brief Tag dispatch class that distinguishes constructors that steal
648 class Steal {};
649 /// @brief Tag dispatch class that distinguishes constructors during file input
650 class PartialCreate {};
651
652 } // namespace OPENVDB_VERSION_NAME
653 } // namespace openvdb
654
655
656 #endif // OPENVDB_TYPES_HAS_BEEN_INCLUDED
657