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https://github.com/minetest/irrlicht.git
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Extract loadPrimitives method from createMesh
This commit is contained in:
JosiahWI
Josiah VanderZee
parent
3930bd8c85
commit
0896aae906
@ -92,7 +92,18 @@ IAnimatedMesh* CGLTFMeshFileLoader::createMesh(io::IReadFile* file)
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MeshExtractor parser(std::move(model));
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SMesh* baseMesh(new SMesh {});
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loadPrimitives(parser, baseMesh);
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SAnimatedMesh* animatedMesh(new SAnimatedMesh {});
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animatedMesh->addMesh(baseMesh);
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return animatedMesh;
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}
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void CGLTFMeshFileLoader::loadPrimitives(
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const MeshExtractor& parser,
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SMesh* mesh)
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{
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for (std::size_t i = 0; i < parser.getMeshCount(); ++i) {
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for (std::size_t j = 0; j < parser.getPrimitiveCount(i); ++j) {
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auto indices = parser.getIndices(i, j);
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@ -101,14 +112,9 @@ IAnimatedMesh* CGLTFMeshFileLoader::createMesh(io::IReadFile* file)
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SMeshBuffer* meshbuf(new SMeshBuffer {});
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meshbuf->append(vertices.data(), vertices.size(),
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indices.data(), indices.size());
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baseMesh->addMeshBuffer(meshbuf);
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mesh->addMeshBuffer(meshbuf);
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}
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}
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SAnimatedMesh* animatedMesh(new SAnimatedMesh {});
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animatedMesh->addMesh(baseMesh);
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return animatedMesh;
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}
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CGLTFMeshFileLoader::MeshExtractor::MeshExtractor(
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@ -1,131 +1,134 @@
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#ifndef __C_GLTF_MESH_FILE_LOADER_INCLUDED__
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#define __C_GLTF_MESH_FILE_LOADER_INCLUDED__
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#include "IAnimatedMesh.h"
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#include "IMeshLoader.h"
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#include "IReadFile.h"
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#include "irrTypes.h"
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#include "path.h"
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#include "S3DVertex.h"
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#include "vector2d.h"
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#include "vector3d.h"
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#include <tiny_gltf.h>
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#include <cstddef>
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#include <vector>
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namespace irr
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{
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namespace scene
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{
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class CGLTFMeshFileLoader : public IMeshLoader
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{
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public:
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CGLTFMeshFileLoader() noexcept;
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bool isALoadableFileExtension(const io::path& filename) const override;
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IAnimatedMesh* createMesh(io::IReadFile* file) override;
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private:
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template <typename T>
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struct Span
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{
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T* buffer = nullptr;
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std::size_t size = 0;
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};
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class BufferOffset
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{
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public:
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BufferOffset(const std::vector<unsigned char>& buf,
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const std::size_t offset);
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BufferOffset(const BufferOffset& other,
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const std::size_t fromOffset);
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unsigned char at(const std::size_t fromOffset) const;
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private:
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const std::vector<unsigned char>& m_buf;
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std::size_t m_offset;
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int m_filesize;
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};
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class MeshExtractor {
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public:
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MeshExtractor(const tinygltf::Model& model) noexcept;
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MeshExtractor(const tinygltf::Model&& model) noexcept;
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/* Gets indices for the given mesh/primitive.
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*
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* Values are return in Irrlicht winding order.
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*/
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std::vector<u16> getIndices(const std::size_t meshIdx,
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const std::size_t primitiveIdx) const;
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std::vector<video::S3DVertex> getVertices(std::size_t meshIdx,
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const std::size_t primitiveIdx) const;
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std::size_t getMeshCount() const;
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std::size_t getPrimitiveCount(const std::size_t meshIdx) const;
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private:
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tinygltf::Model m_model;
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template <typename T>
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static T readPrimitive(const BufferOffset& readFrom);
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static core::vector2df readVec2DF(
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const BufferOffset& readFrom);
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/* Read a vec3df from a buffer with transformations applied.
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*
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* Values are returned in Irrlicht coordinates.
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*/
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static core::vector3df readVec3DF(
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const BufferOffset& readFrom,
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const float scale = 1.0f);
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void copyPositions(const Span<video::S3DVertex> vertices,
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const std::size_t accessorId) const;
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void copyNormals(const Span<video::S3DVertex> vertices,
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const std::size_t accessorId) const;
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void copyTCoords(const Span<video::S3DVertex> vertices,
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const std::size_t accessorId) const;
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/* Get the scale factor from the glTF mesh information.
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*
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* Returns 1.0f if no scale factor is present.
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*/
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float getScale() const;
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std::size_t getElemCount(const std::size_t accessorIdx) const;
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BufferOffset getBuffer(const std::size_t meshIdx,
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const std::size_t primitiveIdx,
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const std::size_t accessorIdx) const;
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std::size_t getIndicesAccessorIdx(const std::size_t meshIdx,
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const std::size_t primitiveIdx) const;
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std::size_t getPositionAccessorIdx(const std::size_t meshIdx,
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const std::size_t primitiveIdx) const;
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};
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static bool tryParseGLTF(io::IReadFile* file,
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tinygltf::Model& model);
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};
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} // namespace scene
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} // namespace irr
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#endif // __C_GLTF_MESH_FILE_LOADER_INCLUDED__
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#ifndef __C_GLTF_MESH_FILE_LOADER_INCLUDED__
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#define __C_GLTF_MESH_FILE_LOADER_INCLUDED__
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#include "IAnimatedMesh.h"
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#include "IMeshLoader.h"
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#include "IReadFile.h"
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#include "irrTypes.h"
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#include "path.h"
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#include "S3DVertex.h"
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#include "SMesh.h"
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#include "vector2d.h"
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#include "vector3d.h"
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#include <tiny_gltf.h>
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#include <cstddef>
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#include <vector>
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namespace irr
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{
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namespace scene
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{
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class CGLTFMeshFileLoader : public IMeshLoader
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{
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public:
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CGLTFMeshFileLoader() noexcept;
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bool isALoadableFileExtension(const io::path& filename) const override;
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IAnimatedMesh* createMesh(io::IReadFile* file) override;
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private:
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template <typename T>
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struct Span
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{
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T* buffer = nullptr;
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std::size_t size = 0;
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};
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class BufferOffset
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{
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public:
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BufferOffset(const std::vector<unsigned char>& buf,
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const std::size_t offset);
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BufferOffset(const BufferOffset& other,
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const std::size_t fromOffset);
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unsigned char at(const std::size_t fromOffset) const;
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private:
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const std::vector<unsigned char>& m_buf;
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std::size_t m_offset;
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int m_filesize;
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};
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class MeshExtractor {
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public:
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MeshExtractor(const tinygltf::Model& model) noexcept;
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MeshExtractor(const tinygltf::Model&& model) noexcept;
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/* Gets indices for the given mesh/primitive.
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*
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* Values are return in Irrlicht winding order.
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*/
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std::vector<u16> getIndices(const std::size_t meshIdx,
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const std::size_t primitiveIdx) const;
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std::vector<video::S3DVertex> getVertices(std::size_t meshIdx,
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const std::size_t primitiveIdx) const;
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std::size_t getMeshCount() const;
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std::size_t getPrimitiveCount(const std::size_t meshIdx) const;
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private:
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tinygltf::Model m_model;
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template <typename T>
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static T readPrimitive(const BufferOffset& readFrom);
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static core::vector2df readVec2DF(
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const BufferOffset& readFrom);
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/* Read a vec3df from a buffer with transformations applied.
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*
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* Values are returned in Irrlicht coordinates.
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*/
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static core::vector3df readVec3DF(
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const BufferOffset& readFrom,
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const float scale = 1.0f);
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void copyPositions(const Span<video::S3DVertex> vertices,
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const std::size_t accessorId) const;
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void copyNormals(const Span<video::S3DVertex> vertices,
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const std::size_t accessorId) const;
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void copyTCoords(const Span<video::S3DVertex> vertices,
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const std::size_t accessorId) const;
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/* Get the scale factor from the glTF mesh information.
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*
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* Returns 1.0f if no scale factor is present.
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*/
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float getScale() const;
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std::size_t getElemCount(const std::size_t accessorIdx) const;
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BufferOffset getBuffer(const std::size_t meshIdx,
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const std::size_t primitiveIdx,
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const std::size_t accessorIdx) const;
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std::size_t getIndicesAccessorIdx(const std::size_t meshIdx,
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const std::size_t primitiveIdx) const;
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std::size_t getPositionAccessorIdx(const std::size_t meshIdx,
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const std::size_t primitiveIdx) const;
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};
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void loadPrimitives(const MeshExtractor& parser, SMesh* mesh);
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static bool tryParseGLTF(io::IReadFile* file,
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tinygltf::Model& model);
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};
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} // namespace scene
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} // namespace irr
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#endif // __C_GLTF_MESH_FILE_LOADER_INCLUDED__
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