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// Copyright 2010-2025 Google LLC
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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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// Two-Dimensional Constrained Guillotine Cutting
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//
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// The file contains code to load the problem, in the format detailed below.
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//
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// Input (on different lines):
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// - number of pieces
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// - length and width for the plane rectangle
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// - for each piece (one line for every piece):
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// - length
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// - width
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// - maximum number of pieces of that type that can be cut
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// - value of the piece
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//
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// For more details and sample input (and format) see:
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// - http://people.brunel.ac.uk/~mastjjb/jeb/orlib/cgcutinfo.html
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// - //ortools/examples/testdata/cgc contains examples
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// of input files.
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#ifndef ORTOOLS_EXAMPLES_CGC_DATA_H_
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#define ORTOOLS_EXAMPLES_CGC_DATA_H_
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#include <string>
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#include <vector>
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namespace operations_research {
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class ConstrainedGuillotineCuttingData {
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public:
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// Each rectangular piece from the input is represented
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// as an instance of this structure.
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struct Piece {
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int length;
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int width;
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int max_appearances;
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int value;
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};
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ConstrainedGuillotineCuttingData() : root_length_(0), root_width_(0) {}
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bool LoadFromFile(const std::string& input_file);
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// Accessors for problem specification data
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int root_length() const { return root_length_; }
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int root_width() const { return root_width_; }
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const std::vector<Piece>& pieces() const { return pieces_; }
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private:
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// main rectangle size
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int root_length_;
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int root_width_;
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std::vector<Piece> pieces_;
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};
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} // namespace operations_research
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#endif // ORTOOLS_EXAMPLES_CGC_DATA_H_
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