MeshMerge.h

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#pragma once
 
#include "common/Export.h"
#include "common/Result.h"
#include "procgen/GtsMeshSimplifier.h"
#include "procgen/MeshBuild.h"
#include "procgen/mesh/MeshContactBlend.h"
 
#include <cstdint>
#include <string>
#include <vector>
 
namespace eve::procgen {
 
class EVENGINE_API_DOMAINS MeshMergePlan {
public:
    enum class PivotMode : std::uint8_t { FirstSource = 0, WorldOrigin = 1 };
 
    [[nodiscard]] Result<void> appendSource(const MeshBuild& mesh, float tx, float ty, float tz, float yawDegrees,
                                            float sx, float sy, float sz, std::string defaultMaterialId = "default");
    void clear() noexcept;
    [[nodiscard]] int getSourceCount() const noexcept;
 
    [[nodiscard]] Result<void> setEnableContactBlend(bool enabled) noexcept;
    [[nodiscard]] bool         getEnableContactBlend() const noexcept { return enableContactBlend_; }
    [[nodiscard]] Result<void> setContactBlendParams(const MeshContactBlendParams& params);
    [[nodiscard]] const MeshContactBlendParams& contactBlendParams() const noexcept { return blendParams_; }
    [[nodiscard]] Result<void> setWeldTolerance(float tolerance) noexcept;
    [[nodiscard]] float        getWeldTolerance() const noexcept { return weldTolerance_; }
    [[nodiscard]] Result<void> setSimplifyQuality(float quality) noexcept;
    [[nodiscard]] float        getSimplifyQuality() const noexcept { return simplifyQuality_; }
    [[nodiscard]] Result<void> setPivotMode(PivotMode mode) noexcept;
    [[nodiscard]] PivotMode    getPivotMode() const noexcept { return pivotMode_; }
    [[nodiscard]] Result<void> setMergeVertexColors(bool enabled) noexcept;
    [[nodiscard]] bool         getMergeVertexColors() const noexcept { return mergeVertexColors_; }
 
private:
    friend EVENGINE_API_DOMAINS Result<MeshBuild> mergeStaticMeshes(const MeshMergePlan&);
    struct Source {
        MeshBuild   mesh;
        std::string defaultMaterialId;
    };
    std::vector<Source>    sources_;
    bool                   enableContactBlend_ = false;
    MeshContactBlendParams blendParams_{};
    float                  weldTolerance_     = 0.f;
    float                  simplifyQuality_   = 0.f;
    PivotMode              pivotMode_         = PivotMode::FirstSource;
    bool                   mergeVertexColors_ = true;
    std::string            falloffStorage_    = "smooth";
};
 
[[nodiscard]] EVENGINE_API_DOMAINS Result<MeshBuild> mergeStaticMeshes(const MeshMergePlan& plan);
 
}  // namespace eve::procgen