ProperPartDomain.hpp

#pragma once
 
#include <cstddef>
#include <limits>
#include <stdexcept>
#include <string>
 
namespace mmcfilters {
 
struct GridDomain2D {
    int rows = 0;
    int columns = 0;
 
    constexpr GridDomain2D() noexcept = default;
 
    constexpr GridDomain2D(int numRows, int numColumns) noexcept : rows(numRows), columns(numColumns) {}
 
    [[nodiscard]] std::size_t size(const char* context) const {
        if (rows <= 0 || columns <= 0) {
            throw std::invalid_argument(std::string(context) + " requires a non-empty 2D grid.");
        }
        const std::size_t gridSize = static_cast<std::size_t>(rows) * static_cast<std::size_t>(columns);
        if (gridSize > static_cast<std::size_t>(std::numeric_limits<int>::max())) {
            throw std::invalid_argument(std::string(context) + " exceeds the supported pixel-id range.");
        }
        return gridSize;
    }
};
 
} // namespace mmcfilters