ModelData.h

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#ifndef ULT_MODEL_DATA_H_INCLUDED
#define ULT_MODEL_DATA_H_INCLUDED
 
#include "Renderer/PrimitiveType.h"
#include "Renderer/VertexDescriptor.h"
 
#define ULT_RENDER_MODEL_DATA_PARAMS(model) model.GetPrimitiveType(), model.GetDescriptor(), \
    model.GetVertices(), model.GetIndices(), \
    model.GetVertexSizeInBytes(), \
    model.GetTotalIndices(), \
    model.GetVertexStride()
 
#define ULT_MODEL_RESOURCE_MANAGER Ult::ResourceManager<Ult::ModelResource,Ult::Handle<Ult::ModelResourceTag>>
 
namespace Ult
{
 
class ModelResourceTag
{
}; // is empty in book

class ModelData
{
public:
    ModelData();
    ~ModelData();

    void Clear();
    
    void ClearDescriptor() { mDescriptor.Clear(); }
    bool AddDescriptorElement(ElementType type) { return mDescriptor.AddElement(type); }
    VertexDescriptor* GetDescriptor() { return &mDescriptor; }
    
    bool SetIndices(int totalIndices, unsigned int* indices);
    int GetTotalIndices() const { return mTotalIndices; }
    unsigned int* GetIndices() { return mIndices; }
    
    bool SetVertices(PrimitiveType type, int totalVertices, int stride, char* vertices);
    int GetTotalVertices() const { return mTotalVertices; }
    int GetVertexSizeInBytes() const { return mDescriptor.GetStride() * mTotalVertices; }
    int GetVertexStride() const { return mDescriptor.GetStride(); }
    char* GetVertices() { return mVertices; }
    PrimitiveType GetPrimitiveType() const { return mPrimitiveType; }
    
private:
    unsigned int* mIndices;
    int mTotalIndices;
    
    char* mVertices;
    int mTotalVertices;
    
    VertexDescriptor mDescriptor;
    
    PrimitiveType mPrimitiveType;
};
 
class ModelResource
{
public:
    ModelResource(ModelData* model) :
        mModel(model)
    {}
    ~ModelResource() {
        FreeMemory();
    }
    
    ModelData* GetModel() { return mModel; }
    
private:
    ModelData* mModel;
 
    void FreeMemory() {
        if (mModel) {
            delete mModel;
        }
        mModel = nullptr;
    }
};
 
} // namespace Ult
 
#endif // ULT_MODEL_DATA_H_INCLUDED