Model.hpp

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#pragma once

#include <string>
#include <vector>

namespace small3d {
  struct Model {

  private:
    // Data read from .obj file
    std::vector<std::vector<float> > vertices;
    std::vector<std::vector<int> > facesVertexIndices;
    std::vector<std::vector<float> > normals;
    std::vector<std::vector<int> > facesNormalIndices;
    std::vector<std::vector<float> > textureCoords;
    std::vector<std::vector<int> > textureCoordsIndices;

    void loadVertexData();
    void loadIndexData();
    void loadNormalsData();
    void loadTextureCoordsData();

    // Make sure that no texture coordinate information is lost when the data
    // buffers get created (vertexData, indexData, normalsData and
    // textureCoordsData) by realigning the data vectors, in order to ensure
    // unique vertex - texture coordinates pairs.
    void correctDataVectors();

    void clear();

  public:

    uint32_t positionBufferObjectId = 0;

    uint32_t indexBufferObjectId = 0;

    uint32_t normalsBufferObjectId = 0;

    uint32_t uvBufferObjectId = 0;
    
    std::vector<float> vertexData;

    int vertexDataByteSize;

    std::vector<unsigned int> indexData;

    int indexDataByteSize;

    std::vector<float> normalsData;

    int normalsDataByteSize;

    std::vector<float> textureCoordsData;

    int textureCoordsDataByteSize;

    Model();

    Model(const std::string fileLocation);

  };
}