1// Ceres Solver - A fast non-linear least squares minimizer 2// Copyright 2014 Google Inc. All rights reserved. 3// http://code.google.com/p/ceres-solver/ 4// 5// Redistribution and use in source and binary forms, with or without 6// modification, are permitted provided that the following conditions are met: 7// 8// * Redistributions of source code must retain the above copyright notice, 9// this list of conditions and the following disclaimer. 10// * Redistributions in binary form must reproduce the above copyright notice, 11// this list of conditions and the following disclaimer in the documentation 12// and/or other materials provided with the distribution. 13// * Neither the name of Google Inc. nor the names of its contributors may be 14// used to endorse or promote products derived from this software without 15// specific prior written permission. 16// 17// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 18// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 21// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27// POSSIBILITY OF SUCH DAMAGE. 28// 29// Author: sameeragarwal@google.com (Sameer Agarwal) 30 31#ifndef CERES_INTERNAL_CALLBACKS_H_ 32#define CERES_INTERNAL_CALLBACKS_H_ 33 34#include <string> 35#include "ceres/iteration_callback.h" 36#include "ceres/internal/port.h" 37 38namespace ceres { 39namespace internal { 40 41class Program; 42 43// Callback for updating the externally visible state of parameter 44// blocks. 45class StateUpdatingCallback : public IterationCallback { 46 public: 47 StateUpdatingCallback(Program* program, double* parameters); 48 virtual ~StateUpdatingCallback(); 49 virtual CallbackReturnType operator()(const IterationSummary& summary); 50 private: 51 Program* program_; 52 double* parameters_; 53}; 54 55// Callback for logging the state of the minimizer to STDERR or 56// STDOUT depending on the user's preferences and logging level. 57class LoggingCallback : public IterationCallback { 58 public: 59 LoggingCallback(MinimizerType minimizer_type, bool log_to_stdout); 60 virtual ~LoggingCallback(); 61 virtual CallbackReturnType operator()(const IterationSummary& summary); 62 63 private: 64 const MinimizerType minimizer_type; 65 const bool log_to_stdout_; 66}; 67 68} // namespace internal 69} // namespace ceres 70 71#endif // CERES_INTERNAL_CALLBACKS_H_ 72