HexMeshData.h

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#pragma once
 
#include "hexmap/HexMetrics.h"
 
#include <cstdint>
#include <vector>
 
namespace eve::hexmap {
 
class HexMeshData {
public:
    void clear() noexcept;
 
    [[nodiscard]] bool empty() const noexcept { return indices_.empty(); }
    [[nodiscard]] std::size_t vertexCount() const noexcept { return positions_.size() / 3u; }
    [[nodiscard]] std::size_t triangleCount() const noexcept { return indices_.size() / 3u; }
 
    std::uint32_t addVertex(HexVec3 position, float u, float v);
 
    void addTriangle(std::uint32_t a, std::uint32_t b, std::uint32_t c);
    void addQuad(std::uint32_t a, std::uint32_t b, std::uint32_t c, std::uint32_t d);
 
    void finalize() noexcept;
 
    [[nodiscard]] const std::vector<float>& positions() const noexcept { return positions_; }
    [[nodiscard]] const std::vector<float>& normals() const noexcept { return normals_; }
    [[nodiscard]] const std::vector<float>& uvs() const noexcept { return uvs_; }
    [[nodiscard]] const std::vector<std::uint32_t>& indices() const noexcept { return indices_; }
 
    [[nodiscard]] bool hasNormals() const noexcept { return normals_.size() == positions_.size(); }
 
private:
    std::vector<float>         positions_;
    std::vector<float>         normals_;
    std::vector<float>         uvs_;
    std::vector<std::uint32_t> indices_;
};
 
}  // namespace eve::hexmap