PcgSkinnedMesh.h

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#pragma once
 
#include "animation/AnimSkin.h"
#include "common/Result.h"
#include "procgen/PcgMeshLod.h"
 
#include <memory>
#include <string>
#include <vector>
 
namespace eve::procgen_animation {
 
class EVENGINE_API_ORCHESTRATION PcgSkinnedMeshPlan {
public:
    [[nodiscard]] Result<void> appendSource(const procgen::MeshBuild& mesh,
                                            const animation::AnimSkin& skin,
                                            const procgen::PcgMeshTransform& transform,
                                            const std::string& defaultMaterialId);
    void clear() noexcept { sources_.clear(); }
    [[nodiscard]] int getSourceCount() const noexcept { return static_cast<int>(sources_.size()); }
 
private:
    struct Source {
        procgen::MeshBuild mesh;
        procgen::PcgMeshTransform transform;
        std::string defaultMaterialId;
        animation::AnimSkinStreamData skin;
    };
    friend EVENGINE_API_ORCHESTRATION Result<void> combinePcgSkinnedMeshesInto(class PcgSkinnedMeshResult&,
                                                                               const PcgSkinnedMeshPlan&);
    std::vector<Source> sources_;
};
 
class PcgSkinnedMeshResult {
public:
    [[nodiscard]] const procgen::MeshBuild* mesh() const noexcept { return skin_ ? &mesh_ : nullptr; }
    [[nodiscard]] animation::AnimSkin* skin() const noexcept { return skin_.get(); }
    [[nodiscard]] bool valid() const noexcept { return skin_ != nullptr; }
 
private:
    friend EVENGINE_API_ORCHESTRATION Result<void> combinePcgSkinnedMeshesInto(PcgSkinnedMeshResult&,
                                                                               const PcgSkinnedMeshPlan&);
    procgen::MeshBuild mesh_;
    std::unique_ptr<animation::AnimSkin> skin_;
};
 
[[nodiscard]] EVENGINE_API_ORCHESTRATION Result<void> combinePcgSkinnedMeshesInto(PcgSkinnedMeshResult&     output,
                                                                                  const PcgSkinnedMeshPlan& plan);
 
}  // namespace eve::procgen_animation