mirror of https://github.com/minetest/minetest.git
106 lines
2.2 KiB
C++
106 lines
2.2 KiB
C++
#ifndef __C_GLTF_MESH_FILE_LOADER_INCLUDED__
|
|
#define __C_GLTF_MESH_FILE_LOADER_INCLUDED__
|
|
|
|
#include "IAnimatedMesh.h"
|
|
#include "IMeshLoader.h"
|
|
#include "IReadFile.h"
|
|
#include "irrTypes.h"
|
|
#include "path.h"
|
|
#include "S3DVertex.h"
|
|
#include "vector2d.h"
|
|
#include "vector3d.h"
|
|
|
|
#include <tiny_gltf.h>
|
|
|
|
#include <cstddef>
|
|
#include <vector>
|
|
|
|
namespace irr
|
|
{
|
|
|
|
namespace scene
|
|
{
|
|
|
|
class CGLTFMeshFileLoader : public IMeshLoader
|
|
{
|
|
public:
|
|
CGLTFMeshFileLoader() noexcept;
|
|
|
|
bool isALoadableFileExtension(const io::path& filename) const override;
|
|
|
|
IAnimatedMesh* createMesh(io::IReadFile* file) override;
|
|
|
|
private:
|
|
template <typename T>
|
|
struct Span
|
|
{
|
|
T* buffer = nullptr;
|
|
std::size_t size = 0;
|
|
};
|
|
|
|
class BufferOffset
|
|
{
|
|
public:
|
|
BufferOffset(const std::vector<unsigned char>& buf,
|
|
const std::size_t offset);
|
|
|
|
BufferOffset(const BufferOffset& other,
|
|
const std::size_t fromOffset);
|
|
|
|
unsigned char at(const std::size_t fromOffset) const;
|
|
private:
|
|
const std::vector<unsigned char>& m_buf;
|
|
std::size_t m_offset;
|
|
int m_filesize;
|
|
};
|
|
|
|
class ModelParser {
|
|
public:
|
|
ModelParser(const tinygltf::Model& model);
|
|
|
|
ModelParser(const tinygltf::Model&& model);
|
|
|
|
void getIndices(const std::size_t accessorId,
|
|
std::vector<u16>& outIndices) const;
|
|
|
|
void getVertices(const std::size_t accessorId,
|
|
Span<video::S3DVertex>& outVertices,
|
|
std::size_t meshIndex,
|
|
std::size_t primitiveIndex) const;
|
|
|
|
private:
|
|
tinygltf::Model m_model;
|
|
|
|
template <typename T>
|
|
static T readPrimitive(const BufferOffset& readFrom);
|
|
|
|
static core::vector2df readVec2DF(
|
|
const BufferOffset& readFrom);
|
|
|
|
static core::vector3df readVec3DF(
|
|
const BufferOffset& readFrom,
|
|
const float scale);
|
|
|
|
void copyPositions(const Span<video::S3DVertex> vertices,
|
|
const std::size_t accessorId) const;
|
|
|
|
void copyNormals(const Span<video::S3DVertex> vertices,
|
|
const std::size_t accessorId) const;
|
|
|
|
void copyTCoords(const Span<video::S3DVertex> vertices,
|
|
const std::size_t accessorId) const;
|
|
|
|
float getScale() const;
|
|
};
|
|
|
|
static bool tryParseGLTF(io::IReadFile* file,
|
|
tinygltf::Model& model);
|
|
};
|
|
|
|
} // namespace scene
|
|
|
|
} // namespace irr
|
|
|
|
#endif // __C_GLTF_MESH_FILE_LOADER_INCLUDED__
|
|
|