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 38 namespace ceres { 39 namespace internal { 40 41 class Program; 42 43 // Callback for updating the externally visible state of parameter 44 // blocks. 45 class 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. 57 class 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