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Diffstat (limited to 'extern/libmv/third_party/ceres/internal/ceres/triplet_sparse_matrix.cc')
-rw-r--r--extern/libmv/third_party/ceres/internal/ceres/triplet_sparse_matrix.cc264
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diff --git a/extern/libmv/third_party/ceres/internal/ceres/triplet_sparse_matrix.cc b/extern/libmv/third_party/ceres/internal/ceres/triplet_sparse_matrix.cc
deleted file mode 100644
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--- a/extern/libmv/third_party/ceres/internal/ceres/triplet_sparse_matrix.cc
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-// Ceres Solver - A fast non-linear least squares minimizer
-// Copyright 2010, 2011, 2012 Google Inc. All rights reserved.
-// http://code.google.com/p/ceres-solver/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are met:
-//
-// * Redistributions of source code must retain the above copyright notice,
-// this list of conditions and the following disclaimer.
-// * Redistributions in binary form must reproduce the above copyright notice,
-// this list of conditions and the following disclaimer in the documentation
-// and/or other materials provided with the distribution.
-// * Neither the name of Google Inc. 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 DIRECT, 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.
-//
-// Author: sameeragarwal@google.com (Sameer Agarwal)
-
-#include "ceres/triplet_sparse_matrix.h"
-
-#include <algorithm>
-#include <cstddef>
-#include "ceres/internal/eigen.h"
-#include "ceres/internal/port.h"
-#include "ceres/internal/scoped_ptr.h"
-#include "ceres/types.h"
-#include "glog/logging.h"
-
-namespace ceres {
-namespace internal {
-
-TripletSparseMatrix::TripletSparseMatrix()
- : num_rows_(0),
- num_cols_(0),
- max_num_nonzeros_(0),
- num_nonzeros_(0),
- rows_(NULL),
- cols_(NULL),
- values_(NULL) {}
-
-TripletSparseMatrix::~TripletSparseMatrix() {}
-
-TripletSparseMatrix::TripletSparseMatrix(int num_rows,
- int num_cols,
- int max_num_nonzeros)
- : num_rows_(num_rows),
- num_cols_(num_cols),
- max_num_nonzeros_(max_num_nonzeros),
- num_nonzeros_(0),
- rows_(NULL),
- cols_(NULL),
- values_(NULL) {
- // All the sizes should at least be zero
- CHECK_GE(num_rows, 0);
- CHECK_GE(num_cols, 0);
- CHECK_GE(max_num_nonzeros, 0);
- AllocateMemory();
-}
-
-TripletSparseMatrix::TripletSparseMatrix(const TripletSparseMatrix& orig)
- : SparseMatrix(),
- num_rows_(orig.num_rows_),
- num_cols_(orig.num_cols_),
- max_num_nonzeros_(orig.max_num_nonzeros_),
- num_nonzeros_(orig.num_nonzeros_),
- rows_(NULL),
- cols_(NULL),
- values_(NULL) {
- AllocateMemory();
- CopyData(orig);
-}
-
-TripletSparseMatrix& TripletSparseMatrix::operator=(
- const TripletSparseMatrix& rhs) {
- num_rows_ = rhs.num_rows_;
- num_cols_ = rhs.num_cols_;
- num_nonzeros_ = rhs.num_nonzeros_;
- max_num_nonzeros_ = rhs.max_num_nonzeros_;
- AllocateMemory();
- CopyData(rhs);
- return *this;
-}
-
-bool TripletSparseMatrix::AllTripletsWithinBounds() const {
- for (int i = 0; i < num_nonzeros_; ++i) {
- if ((rows_[i] < 0) || (rows_[i] >= num_rows_) ||
- (cols_[i] < 0) || (cols_[i] >= num_cols_))
- return false;
- }
- return true;
-}
-
-void TripletSparseMatrix::Reserve(int new_max_num_nonzeros) {
- CHECK_LE(num_nonzeros_, new_max_num_nonzeros)
- << "Reallocation will cause data loss";
-
- // Nothing to do if we have enough space already.
- if (new_max_num_nonzeros <= max_num_nonzeros_)
- return;
-
- int* new_rows = new int[new_max_num_nonzeros];
- int* new_cols = new int[new_max_num_nonzeros];
- double* new_values = new double[new_max_num_nonzeros];
-
- for (int i = 0; i < num_nonzeros_; ++i) {
- new_rows[i] = rows_[i];
- new_cols[i] = cols_[i];
- new_values[i] = values_[i];
- }
-
- rows_.reset(new_rows);
- cols_.reset(new_cols);
- values_.reset(new_values);
-
- max_num_nonzeros_ = new_max_num_nonzeros;
-}
-
-void TripletSparseMatrix::SetZero() {
- fill(values_.get(), values_.get() + max_num_nonzeros_, 0.0);
- num_nonzeros_ = 0;
-}
-
-void TripletSparseMatrix::set_num_nonzeros(int num_nonzeros) {
- CHECK_GE(num_nonzeros, 0);
- CHECK_LE(num_nonzeros, max_num_nonzeros_);
- num_nonzeros_ = num_nonzeros;
-};
-
-void TripletSparseMatrix::AllocateMemory() {
- rows_.reset(new int[max_num_nonzeros_]);
- cols_.reset(new int[max_num_nonzeros_]);
- values_.reset(new double[max_num_nonzeros_]);
-}
-
-void TripletSparseMatrix::CopyData(const TripletSparseMatrix& orig) {
- for (int i = 0; i < num_nonzeros_; ++i) {
- rows_[i] = orig.rows_[i];
- cols_[i] = orig.cols_[i];
- values_[i] = orig.values_[i];
- }
-}
-
-void TripletSparseMatrix::RightMultiply(const double* x, double* y) const {
- for (int i = 0; i < num_nonzeros_; ++i) {
- y[rows_[i]] += values_[i]*x[cols_[i]];
- }
-}
-
-void TripletSparseMatrix::LeftMultiply(const double* x, double* y) const {
- for (int i = 0; i < num_nonzeros_; ++i) {
- y[cols_[i]] += values_[i]*x[rows_[i]];
- }
-}
-
-void TripletSparseMatrix::SquaredColumnNorm(double* x) const {
- CHECK_NOTNULL(x);
- VectorRef(x, num_cols_).setZero();
- for (int i = 0; i < num_nonzeros_; ++i) {
- x[cols_[i]] += values_[i] * values_[i];
- }
-}
-
-void TripletSparseMatrix::ScaleColumns(const double* scale) {
- CHECK_NOTNULL(scale);
- for (int i = 0; i < num_nonzeros_; ++i) {
- values_[i] = values_[i] * scale[cols_[i]];
- }
-}
-
-void TripletSparseMatrix::ToDenseMatrix(Matrix* dense_matrix) const {
- dense_matrix->resize(num_rows_, num_cols_);
- dense_matrix->setZero();
- Matrix& m = *dense_matrix;
- for (int i = 0; i < num_nonzeros_; ++i) {
- m(rows_[i], cols_[i]) += values_[i];
- }
-}
-
-void TripletSparseMatrix::AppendRows(const TripletSparseMatrix& B) {
- CHECK_EQ(B.num_cols(), num_cols_);
- Reserve(num_nonzeros_ + B.num_nonzeros_);
- for (int i = 0; i < B.num_nonzeros_; ++i) {
- rows_.get()[num_nonzeros_] = B.rows()[i] + num_rows_;
- cols_.get()[num_nonzeros_] = B.cols()[i];
- values_.get()[num_nonzeros_++] = B.values()[i];
- }
- num_rows_ = num_rows_ + B.num_rows();
-}
-
-void TripletSparseMatrix::AppendCols(const TripletSparseMatrix& B) {
- CHECK_EQ(B.num_rows(), num_rows_);
- Reserve(num_nonzeros_ + B.num_nonzeros_);
- for (int i = 0; i < B.num_nonzeros_; ++i, ++num_nonzeros_) {
- rows_.get()[num_nonzeros_] = B.rows()[i];
- cols_.get()[num_nonzeros_] = B.cols()[i] + num_cols_;
- values_.get()[num_nonzeros_] = B.values()[i];
- }
- num_cols_ = num_cols_ + B.num_cols();
-}
-
-
-void TripletSparseMatrix::Resize(int new_num_rows, int new_num_cols) {
- if ((new_num_rows >= num_rows_) && (new_num_cols >= num_cols_)) {
- num_rows_ = new_num_rows;
- num_cols_ = new_num_cols;
- return;
- }
-
- num_rows_ = new_num_rows;
- num_cols_ = new_num_cols;
-
- int* r_ptr = rows_.get();
- int* c_ptr = cols_.get();
- double* v_ptr = values_.get();
-
- int dropped_terms = 0;
- for (int i = 0; i < num_nonzeros_; ++i) {
- if ((r_ptr[i] < num_rows_) && (c_ptr[i] < num_cols_)) {
- if (dropped_terms) {
- r_ptr[i-dropped_terms] = r_ptr[i];
- c_ptr[i-dropped_terms] = c_ptr[i];
- v_ptr[i-dropped_terms] = v_ptr[i];
- }
- } else {
- ++dropped_terms;
- }
- }
- num_nonzeros_ -= dropped_terms;
-}
-
-TripletSparseMatrix* TripletSparseMatrix::CreateSparseDiagonalMatrix(
- const double* values, int num_rows) {
- TripletSparseMatrix* m =
- new TripletSparseMatrix(num_rows, num_rows, num_rows);
- for (int i = 0; i < num_rows; ++i) {
- m->mutable_rows()[i] = i;
- m->mutable_cols()[i] = i;
- m->mutable_values()[i] = values[i];
- }
- m->set_num_nonzeros(num_rows);
- return m;
-}
-
-void TripletSparseMatrix::ToTextFile(FILE* file) const {
- CHECK_NOTNULL(file);
- for (int i = 0; i < num_nonzeros_; ++i) {
- fprintf(file, "% 10d % 10d %17f\n", rows_[i], cols_[i], values_[i]);
- }
-}
-
-} // namespace internal
-} // namespace ceres