COM_SummedAreaTableOperation.h

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/* SPDX-FileCopyrightText: 2023 Blender Authors
 *
 * SPDX-License-Identifier: GPL-2.0-or-later */
 
#pragma once
 
#include "COM_NodeOperation.h"
 
namespace blender::compositor {

class SummedAreaTableOperation : public NodeOperation {
 
 public:
  SummedAreaTableOperation();
 
  enum eMode { Identity = 1, Squared };
 
  void set_mode(const eMode mode);
  eMode get_mode();
 
  void get_area_of_interest(int input_idx, const rcti &output_area, rcti &r_input_area) override;
 
  void update_memory_buffer(MemoryBuffer *output,
                            const rcti &area,
                            Span<MemoryBuffer *> inputs) override;
 
 private:
  eMode mode_;
};
 
/* Computes the sum of the rectangular region defined by the given area from the
 * given summed area table. All coordinates within the area are included. */
float4 summed_area_table_sum(MemoryBuffer *buffer, const rcti &area);
 
}  // namespace blender::compositor