This file is indexed.

/usr/include/openvdb/tools/Prune.h is in libopenvdb-dev 3.1.0-2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2012-2015 DreamWorks Animation LLC
//
// All rights reserved. This software is distributed under the
// Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
//
// Redistributions of source code must retain the above copyright
// and license notice and the following restrictions and disclaimer.
//
// *     Neither the name of DreamWorks Animation nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// IN NO EVENT SHALL THE COPYRIGHT HOLDERS' AND CONTRIBUTORS' AGGREGATE
// LIABILITY FOR ALL CLAIMS REGARDLESS OF THEIR BASIS EXCEED US$250.00.
//
///////////////////////////////////////////////////////////////////////////
//
/// @file Prune.h
///
/// @brief Defined various multi-threaded utility functions for trees
///
/// @author Ken Museth

#ifndef OPENVDB_TOOLS_PRUNE_HAS_BEEN_INCLUDED
#define OPENVDB_TOOLS_PRUNE_HAS_BEEN_INCLUDED

#include <boost/utility/enable_if.hpp>
#include <boost/static_assert.hpp>
#include <boost/type_traits/is_floating_point.hpp>

#include <openvdb/math/Math.h> // for isNegative and negative
#include <openvdb/Types.h> // for Index typedef
#include <openvdb/Types.h>
#include <openvdb/tree/NodeManager.h>

namespace openvdb {
OPENVDB_USE_VERSION_NAMESPACE
namespace OPENVDB_VERSION_NAME {
namespace tools {

/// @brief Reduce the memory footprint of a @a tree by replacing with tiles
/// any nodes whose values are all the same (optionally to within a tolerance)
/// and have the same active state.
///
/// @note For trees with floating-point values a child node with (approximately)
/// constant values are replaced with a tile value corresponding to the average
/// of the extrema values in said child node. Else the first value encountered
/// in the child node is used.
///
/// @param tree       the tree to be pruned
/// @param tolerance  tolerance within which values are considered to be equal
/// @param threaded   enable or disable threading (threading is enabled by default)
/// @param grainSize  used to control the threading granularity (default is 1)
template<typename TreeT>
inline void
prune(TreeT& tree,
      typename TreeT::ValueType tolerance = zeroVal<typename TreeT::ValueType>(),
      bool threaded = true,
      size_t grainSize = 1);


/// @brief Reduce the memory footprint of a @a tree by replacing with tiles
/// any non-leaf nodes whose values are all the same (optionally to within a tolerance)
/// and have the same active state.
///
/// @param tree       the tree to be pruned
/// @param tolerance  tolerance within which values are considered to be equal
/// @param threaded   enable or disable threading (threading is enabled by default)
/// @param grainSize  used to control the threading granularity (default is 1)
template<typename TreeT>
inline void
pruneTiles(TreeT& tree,
           typename TreeT::ValueType tolerance = zeroVal<typename TreeT::ValueType>(),
           bool threaded = true,
           size_t grainSize = 1);


/// @brief Reduce the memory footprint of a @a tree by replacing with
/// background tiles any nodes whose values are all inactive.
///
/// @param tree       the tree to be pruned
/// @param threaded   enable or disable threading (threading is enabled by default)
/// @param grainSize  used to control the threading granularity (default is 1)
template<typename TreeT>
inline void
pruneInactive(TreeT& tree, bool threaded = true, size_t grainSize = 1);


/// @brief Reduce the memory footprint of a @a tree by replacing any nodes
/// whose values are all inactive with tiles of the given @a value.
///
/// @param tree       the tree to be pruned
/// @param value      value assigned to inactive tiles created during pruning
/// @param threaded   enable or disable threading (threading is enabled by default)
/// @param grainSize  used to control the threading granularity (default is 1)
template<typename TreeT>
inline void
pruneInactiveWithValue(
    TreeT& tree,
    const typename TreeT::ValueType& value,
    bool threaded = true,
    size_t grainSize = 1);


/// @brief Reduce the memory footprint of a @a tree by replacing nodes
/// whose values are all inactive with inactive tiles having a value equal to
/// the first value encountered in the (inactive) child.
/// @details This method is faster than tolerance-based prune and
/// useful for narrow-band level set applications where inactive
/// values are limited to either an inside or an outside value.
///
/// @param tree       the tree to be pruned
/// @param threaded   enable or disable threading (threading is enabled by default)
/// @param grainSize  used to control the threading granularity (default is 1)
///
/// @throw ValueError if the background of the @a tree is negative (as defined by math::isNegative)
template<typename TreeT>
inline void
pruneLevelSet(TreeT& tree,
              bool threaded = true,
              size_t grainSize = 1);


/// @brief Reduce the memory footprint of a @a tree by replacing nodes whose voxel values
/// are all inactive with inactive tiles having the value -| @a insideWidth |
/// if the voxel values are negative and | @a outsideWidth | otherwise.
///
/// @details This method is faster than tolerance-based prune and
/// useful for narrow-band level set applications where inactive
/// values are limited to either an inside or an outside value.
///
/// @param tree          the tree to be pruned
/// @param outsideWidth  the width of the outside of the narrow band
/// @param insideWidth   the width of the inside of the narrow band
/// @param threaded      enable or disable threading (threading is enabled by default)
/// @param grainSize     used to control the threading granularity (default is 1)
///
/// @throw ValueError if @a outsideWidth is negative or @a insideWidth is
/// not negative (as defined by math::isNegative).
template<typename TreeT>
inline void
pruneLevelSet(TreeT& tree,
              const typename TreeT::ValueType& outsideWidth,
              const typename TreeT::ValueType& insideWidth,
              bool threaded = true,
              size_t grainSize = 1);


////////////////////////////////////////////////


template<typename TreeT, Index TerminationLevel = 0>
class InactivePruneOp
{
public:
    typedef typename TreeT::ValueType    ValueT;
    typedef typename TreeT::RootNodeType RootT;
    typedef typename TreeT::LeafNodeType LeafT;
    BOOST_STATIC_ASSERT(RootT::LEVEL > TerminationLevel);

    InactivePruneOp(TreeT& tree) : mValue(tree.background())
    {
        tree.clearAllAccessors();//clear cache of nodes that could be pruned
    }

    InactivePruneOp(TreeT& tree, const ValueT& v) : mValue(v)
    {
        tree.clearAllAccessors();//clear cache of nodes that could be pruned
    }

    // Nothing to do at the leaf node level
    void operator()(LeafT&) const {}
    // Prune the child nodes of the internal nodes
    template<typename NodeT>
    void operator()(NodeT& node) const
    {
        if (NodeT::LEVEL > TerminationLevel) {
            for (typename NodeT::ChildOnIter it=node.beginChildOn(); it; ++it) {
                if (it->isInactive()) node.addTile(it.pos(), mValue, false);
            }
        }
    }
    // Prune the child nodes of the root node
    void operator()(RootT& root) const
    {
        for (typename RootT::ChildOnIter it = root.beginChildOn(); it; ++it) {
            if (it->isInactive()) root.addTile(it.getCoord(), mValue, false);
        }
        root.eraseBackgroundTiles();
    }
private:

    const ValueT mValue;
};// InactivePruneOp


template<typename TreeT, Index TerminationLevel = 0>
class TolerancePruneOp
{
public:
    typedef typename TreeT::ValueType    ValueT;
    typedef typename TreeT::RootNodeType RootT;
    typedef typename TreeT::LeafNodeType LeafT;
    BOOST_STATIC_ASSERT(RootT::LEVEL > TerminationLevel);

    TolerancePruneOp(TreeT& tree, const ValueT& t) : mTolerance(t)
    {
        tree.clearAllAccessors();//clear cache of nodes that could be pruned
    }

    // Prune the child nodes of the root node
    inline void operator()(RootT& root) const
    {
        ValueT value;
        bool   state;
        for (typename RootT::ChildOnIter it = root.beginChildOn(); it; ++it) {
            if (this->isConstant(*it, value, state)) root.addTile(it.getCoord(), value, state);
        }
        root.eraseBackgroundTiles();
    }

    // Prune the child nodes of the internal nodes
    template<typename NodeT>
    inline void operator()(NodeT& node) const
    {
        if (NodeT::LEVEL > TerminationLevel) {
            ValueT value;
            bool   state;
            for (typename NodeT::ChildOnIter it=node.beginChildOn(); it; ++it) {
                if (this->isConstant(*it, value, state)) node.addTile(it.pos(), value, state);
            }
        }
    }

    // Nothing to do at the leaf node level
    inline void operator()(LeafT&) const {}

private:

    // For floating-point value types set tile values to
    // the mean of the extrema values of the constant node
    template<typename NodeT>
    inline
    typename boost::enable_if<boost::is_floating_point<typename NodeT::ValueType>, bool>::type
    isConstant(const NodeT& node, ValueT& value, bool& state) const
    {
        ValueT tmp;
        const bool test = node.isConstant(value, tmp, state, mTolerance);
        if (test) value = ValueT(0.5f)*(value + tmp);
        return test;
    }

    // For non-floating-point value types set tile values to
    // the first value encountered in the constant node
    template<typename NodeT>
    inline
    typename boost::disable_if<boost::is_floating_point<typename NodeT::ValueType>, bool>::type
    isConstant(const NodeT& node, ValueT& value, bool& state) const
    {
        return node.isConstant(value, state, mTolerance);
    }

    const ValueT mTolerance;
};// TolerancePruneOp


template<typename TreeT, Index TerminationLevel = 0>
class LevelSetPruneOp
{
public:
    typedef typename TreeT::ValueType    ValueT;
    typedef typename TreeT::RootNodeType RootT;
    typedef typename TreeT::LeafNodeType LeafT;
    BOOST_STATIC_ASSERT(RootT::LEVEL > TerminationLevel);

    LevelSetPruneOp(TreeT& tree)
        : mOutside(tree.background())
        , mInside(math::negative(mOutside))
    {
        if (math::isNegative(mOutside)) {
            OPENVDB_THROW(ValueError,
                          "LevelSetPruneOp: the background value cannot be negative!");
        }
        tree.clearAllAccessors();//clear cache of nodes that could be pruned
    }
    LevelSetPruneOp(TreeT& tree, const ValueT& outside, const ValueT& inside)
        : mOutside(outside)
        , mInside(inside)
    {
        if (math::isNegative(mOutside)) {
            OPENVDB_THROW(ValueError,
                          "LevelSetPruneOp: the outside value cannot be negative!");
        }
        if (!math::isNegative(mInside)) {
            OPENVDB_THROW(ValueError,
                          "LevelSetPruneOp: the inside value must be negative!");
        }
        tree.clearAllAccessors();//clear cache of nodes that could be pruned
    }
    // Nothing to do at the leaf node level
    void operator()(LeafT&) const {}
    // Prune the child nodes of the internal nodes
    template<typename NodeT>
    void operator()(NodeT& node) const
    {
        if (NodeT::LEVEL > TerminationLevel) {
            for (typename NodeT::ChildOnIter it=node.beginChildOn(); it; ++it) {
                if (it->isInactive()) node.addTile(it.pos(), this->getTileValue(it), false);
            }
        }
    }
    // Prune the child nodes of the root node
    void operator()(RootT& root) const
    {
        for (typename RootT::ChildOnIter it = root.beginChildOn(); it; ++it) {
            if (it->isInactive()) root.addTile(it.getCoord(), this->getTileValue(it), false);
        }
        root.eraseBackgroundTiles();
    }

private:
    template <typename IterT>
    inline ValueT getTileValue(const IterT& iter) const
    {
        return  math::isNegative(iter->getFirstValue()) ? mInside : mOutside;
    }

    const ValueT mOutside, mInside;
};// LevelSetPruneOp


template<typename TreeT>
inline void
prune(TreeT& tree, typename TreeT::ValueType tol, bool threaded, size_t grainSize)
{
    tree::NodeManager<TreeT, TreeT::DEPTH-2> nodes(tree);
    TolerancePruneOp<TreeT> op(tree, tol);
    nodes.processBottomUp(op, threaded, grainSize);
}


template<typename TreeT>
inline void
pruneTiles(TreeT& tree, typename TreeT::ValueType tol, bool threaded, size_t grainSize)
{
    tree::NodeManager<TreeT, TreeT::DEPTH-3> nodes(tree);
    TolerancePruneOp<TreeT> op(tree, tol);
    nodes.processBottomUp(op, threaded, grainSize);
}


template<typename TreeT>
inline void
pruneInactive(TreeT& tree, bool threaded, size_t grainSize)
{
    tree::NodeManager<TreeT, TreeT::DEPTH-2> nodes(tree);
    InactivePruneOp<TreeT> op(tree);
    nodes.processBottomUp(op, threaded, grainSize);
}


template<typename TreeT>
inline void
pruneInactiveWithValue(TreeT& tree, const typename TreeT::ValueType& v,
    bool threaded, size_t grainSize)
{
    tree::NodeManager<TreeT, TreeT::DEPTH-2> nodes(tree);
    InactivePruneOp<TreeT> op(tree, v);
    nodes.processBottomUp(op, threaded, grainSize);
}


template<typename TreeT>
inline void
pruneLevelSet(TreeT& tree,
              const typename TreeT::ValueType& outside,
              const typename TreeT::ValueType& inside,
              bool threaded,
              size_t grainSize)
{
    tree::NodeManager<TreeT, TreeT::DEPTH-2> nodes(tree);
    LevelSetPruneOp<TreeT> op(tree, outside, inside);
    nodes.processBottomUp(op, threaded, grainSize);
}


template<typename TreeT>
inline void
pruneLevelSet(TreeT& tree, bool threaded, size_t grainSize)
{
    tree::NodeManager<TreeT, TreeT::DEPTH-2> nodes(tree);
    LevelSetPruneOp<TreeT> op(tree);
    nodes.processBottomUp(op, threaded, grainSize);
}

} // namespace tools
} // namespace OPENVDB_VERSION_NAME
} // namespace openvdb

#endif // OPENVDB_TOOLS_PRUNE_HAS_BEEN_INCLUDED

// Copyright (c) 2012-2015 DreamWorks Animation LLC
// All rights reserved. This software is distributed under the
// Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )