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// Copyright 2010-2025 Google LLC
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Two-Dimensional Constrained Guillotine Cutting
//
// The file contains code to load the problem, in the format detailed below.
//
// Input (on different lines):
// - number of pieces
// - length and width for the plane rectangle
// - for each piece (one line for every piece):
// - length
// - width
// - maximum number of pieces of that type that can be cut
// - value of the piece
//
// For more details and sample input (and format) see:
// - http://people.brunel.ac.uk/~mastjjb/jeb/orlib/cgcutinfo.html
// - //ortools/examples/testdata/cgc contains examples
// of input files.
#ifndef ORTOOLS_EXAMPLES_CGC_DATA_H_
#define ORTOOLS_EXAMPLES_CGC_DATA_H_
#include <string>
#include <vector>
namespace operations_research {
class ConstrainedGuillotineCuttingData {
public:
// Each rectangular piece from the input is represented
// as an instance of this structure.
struct Piece {
int length;
int width;
int max_appearances;
int value;
};
ConstrainedGuillotineCuttingData() : root_length_(0), root_width_(0) {}
bool LoadFromFile(const std::string& input_file);
// Accessors for problem specification data
int root_length() const { return root_length_; }
int root_width() const { return root_width_; }
const std::vector<Piece>& pieces() const { return pieces_; }
private:
// main rectangle size
int root_length_;
int root_width_;
std::vector<Piece> pieces_;
};
} // namespace operations_research
#endif // ORTOOLS_EXAMPLES_CGC_DATA_H_