TIndexedPolygonBuffer.h

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#pragma once
 
#include "Core/Intersection/data_structure_fwd.h"
#include "Core/Intersection/DataStructure/IndexedVertexBuffer.h"
#include "Core/Intersection/DataStructure/IndexedUIntBuffer.h"
#include "Math/TVector3.h"
 
#include <Common/assertion.h>
 
#include <cstddef>
#include <utility>
#include <memory>
#include <array>
 
namespace ph
{
 
template<std::size_t N>
class TIndexedPolygonBuffer final
{
    // We do not consider strange cases such as a digon.
    static_assert(N >= 3);
 
public:
    TIndexedPolygonBuffer();
 
    std::array<math::Vector3R, N> getPositions(std::size_t faceIndex) const;
    std::array<math::Vector3R, N> getTexCoords(std::size_t faceIndex) const;
    std::array<math::Vector3R, N> getNormals(std::size_t faceIndex) const;
    std::array<math::Vector3R, N> getFaceAttribute(EVertexAttribute attribute, std::size_t faceIndex) const;
    std::size_t numFaces() const;
    bool hasTexCoord() const;
    bool hasNormal() const;
    bool hasFaceAttribute(EVertexAttribute attribute) const;
 
    std::size_t memoryUsage() const;
 
    float averagePerPolygonMemoryUsage() const;
 
    IndexedVertexBuffer& getVertexBuffer();
    const IndexedVertexBuffer& getVertexBuffer() const;
    IndexedUIntBuffer& getIndexBuffer();
    const IndexedUIntBuffer& getIndexBuffer() const;
 
    static constexpr std::size_t numPolygonVertices();
    static constexpr bool isTriangular();
 
private:
    IndexedVertexBuffer m_vertexBuffer;
    IndexedUIntBuffer m_indexBuffer;
};
 
}// end namespace ph
 
#include "Core/Intersection/DataStructure/TIndexedPolygonBuffer.ipp"