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// Ceres Solver - A fast non-linear least squares minimizer
// Copyright 2015 Google Inc. All rights reserved.
// http://ceres-solver.org/
//
// 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/minimizer.h"
#include <memory>
#include "ceres/line_search_minimizer.h"
#include "ceres/trust_region_minimizer.h"
#include "ceres/types.h"
#include "glog/logging.h"
namespace ceres {
namespace internal {
std::unique_ptr<Minimizer> Minimizer::Create(MinimizerType minimizer_type) {
if (minimizer_type == TRUST_REGION) {
return std::make_unique<TrustRegionMinimizer>();
}
if (minimizer_type == LINE_SEARCH) {
return std::make_unique<LineSearchMinimizer>();
}
LOG(FATAL) << "Unknown minimizer_type: " << minimizer_type;
return nullptr;
}
Minimizer::~Minimizer() = default;
bool Minimizer::RunCallbacks(const Minimizer::Options& options,
const IterationSummary& iteration_summary,
Solver::Summary* summary) {
const bool is_not_silent = !options.is_silent;
CallbackReturnType status = SOLVER_CONTINUE;
int i = 0;
while (status == SOLVER_CONTINUE && i < options.callbacks.size()) {
status = (*options.callbacks[i])(iteration_summary);
++i;
}
switch (status) {
case SOLVER_CONTINUE:
return true;
case SOLVER_TERMINATE_SUCCESSFULLY:
summary->termination_type = USER_SUCCESS;
summary->message =
"User callback returned SOLVER_TERMINATE_SUCCESSFULLY.";
if (is_not_silent) {
VLOG(1) << "Terminating: " << summary->message;
}
return false;
case SOLVER_ABORT:
summary->termination_type = USER_FAILURE;
summary->message = "User callback returned SOLVER_ABORT.";
if (is_not_silent) {
VLOG(1) << "Terminating: " << summary->message;
}
return false;
default:
LOG(FATAL) << "Unknown type of user callback status";
}
return false;
}
} // namespace internal
} // namespace ceres
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