cell_path.hpp

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/* Copyright (c) 2026 Otto Link. Distributed under the terms of the GNU General
   Public License. The full license is in the file LICENSE, distributed with
   this software. */
 
#pragma once
#include <vector>
 
#include <glm/glm.hpp>
 
#include "highmap/functions.hpp"
 
namespace hmap
{
 
class CellPath
{
public:
  CellPath() = default;
 
  CellPath(const std::vector<glm::ivec2> &indices);
 
  CellPath(std::vector<glm::ivec2> &&indices);
 
  std::vector<glm::ivec2> &get_indices();
 
  const std::vector<glm::ivec2> &get_indices() const;
 
private:
  std::vector<glm::ivec2> indices;
};
 
void add_line_bresenham(std::vector<glm::ivec2> &out,
                        glm::ivec2               a,
                        glm::ivec2               b);
 
void add_noise(std::vector<glm::ivec2> &indices,
               std::uint32_t            seed,
               float                    kw,
               float                    amp,
               const glm::ivec2        &shape,
               NoiseType                noise_type = NoiseType::PERLIN,
               int                      octaves = 8,
               float                    weight = 0.7f,
               float                    persistence = 0.5f,
               float                    lacunarity = 2.f);
 
void enforce_path_adjacency(std::vector<glm::ivec2> &indices);
 
bool is_path_adjacent(const std::vector<glm::ivec2> &indices);
 
} // namespace hmap