Mesh.h

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#pragma once
 
#include "graphics/Drawable.h"
 
#include <cstdint>
#include <string>
#include <unordered_map>
#include <vector>
 
namespace eve::graphics {
 
class Mesh : public Drawable {
public:
    int   indexCount = 0;
    void *gpuHandle  = nullptr;  // vulkan::GpuMesh*
 
    float boundsCx     = 0.f;
    float boundsCy     = 0.f;
    float boundsCz     = 0.f;
    float boundsRadius = 0.f;
 
    bool hasBounds() const { return boundsRadius > 0.f; }
 
    void computeBounds(const float *posXYZ, int vertexCount);
 
    void draw(Graphics * /*gfx*/, const glm::mat4 & /*matrix*/) const override {}
    void drawOcclusion(Graphics *gfx, const glm::mat4 &matrix) const override;
 
    // ---- morph targets (CPU) ----
    void clearMorphData();
    void initMorphBase(int vertexCount, const float *posXYZ, const float *nrmXYZ = nullptr,
                       const float *uvST = nullptr);
    bool addMorphTarget(const std::string &name, const float *deltaPosXYZ);
    bool addMorphTargetAbsolute(const std::string &name, const float *absPosXYZ);
 
    int getVertexCount() const;
    int getMorphCount() const;
    std::string getMorphName(int index) const;
    bool hasMorph(const std::string &name) const;
    bool setMorphWeight(const std::string &name, float weight);
    float getMorphWeight(const std::string &name) const;
    void clearMorphWeights();
    bool isMorphDirty() const { return morphDirty_; }
    void markMorphClean() { morphDirty_ = false; }
    bool hasMorphData() const { return !basePos_.empty(); }
 
    void computeMorphedPositions(std::vector<float> &outPos, std::vector<float> &outNrm) const;
 
    const std::vector<float> &baseUv() const { return baseUv_; }
 
private:
    struct MorphTarget {
        std::string name;
        std::vector<float> deltaPos;  // xyz packed, size = vertexCount*3
    };
 
    std::vector<float> basePos_;
    std::vector<float> baseNrm_;
    std::vector<float> baseUv_;
    std::vector<MorphTarget> morphs_;
    std::unordered_map<std::string, float> morphWeights_;
    bool morphDirty_ = false;
};
 
}  // namespace eve::graphics