64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
// Copyright 2010-2017 Google
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "ortools/sat/cp_model.pb.h"
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#include "ortools/sat/cp_model_solver.h"
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#include "ortools/sat/cp_model_utils.h"
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#include "ortools/sat/model.h"
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namespace operations_research {
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namespace sat {
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void IntervalSample() {
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CpModelProto cp_model;
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const int kHorizon = 100;
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auto new_variable = [&cp_model](int64 lb, int64 ub) {
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CHECK_LE(lb, ub);
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const int index = cp_model.variables_size();
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IntegerVariableProto* const var = cp_model.add_variables();
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var->add_domain(lb);
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var->add_domain(ub);
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return index;
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};
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auto new_constant = [&new_variable](int64 v) { return new_variable(v, v); };
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auto new_interval = [&cp_model](int start, int duration, int end) {
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const int index = cp_model.constraints_size();
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IntervalConstraintProto* const interval =
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cp_model.add_constraints()->mutable_interval();
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interval->set_start(start);
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interval->set_size(duration);
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interval->set_end(end);
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return index;
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};
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const int start_var = new_variable(0, kHorizon);
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const int duration_var = new_constant(10);
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const int end_var = new_variable(0, kHorizon);
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const int interval_var = new_interval(start_var, duration_var, end_var);
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LOG(INFO) << "start_var = " << start_var
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<< ", duration_var = " << duration_var << ", end_var = " << end_var
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<< ", interval_var = " << interval_var;
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}
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} // namespace sat
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} // namespace operations_research
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int main() {
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operations_research::sat::IntervalSample();
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return EXIT_SUCCESS;
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}
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