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https://github.com/minetest/irrlicht.git
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77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
#include "CGLTFMeshFileLoader.h"
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#include "CMeshBuffer.h"
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#include "coreutil.h"
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#include "IAnimatedMesh.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 "SAnimatedMesh.h"
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#include "SColor.h"
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#include "SMesh.h"
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#define TINYGLTF_IMPLEMENTATION
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#include <tiny_gltf.h>
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#include <memory>
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#include <string>
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namespace irr
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{
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namespace scene
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{
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CGLTFMeshFileLoader::CGLTFMeshFileLoader()
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{
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}
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bool CGLTFMeshFileLoader::isALoadableFileExtension(
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const io::path& filename) const
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{
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return core::hasFileExtension(filename, "gltf");
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}
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IAnimatedMesh* CGLTFMeshFileLoader::createMesh(io::IReadFile* file)
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{
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if (file->getSize() == 0 || !tryParseGLTF(file)) {
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return nullptr;
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}
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// sorry Bjarne
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SMeshBuffer* meshbuf { new SMeshBuffer {} };
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const video::S3DVertex* vertices { new video::S3DVertex[3] {
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{{0.0f, 0.0f, 0.0f}, {0.0f, 0.0f, 1.0f}, {}, {0.0f, 0.0f}},
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{{0.0f, 1.0f, 0.0f}, {0.0f, 0.0f, 1.0f}, {}, {1.0f, 0.0f}},
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{{-1.0f, 0.0f, 0.0f}, {0.0f, 0.0f, 1.0f}, {}, {0.0f, 1.0f}} } };
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const u16* indices { new u16[3] {0, 1, 2} };
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meshbuf->append(vertices, 3, indices, 3);
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SMesh* mesh { new SMesh {} };
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mesh->addMeshBuffer(meshbuf);
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SAnimatedMesh* animatedMesh { new SAnimatedMesh {} };
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animatedMesh->addMesh(mesh);
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return animatedMesh;
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}
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bool CGLTFMeshFileLoader::tryParseGLTF(io::IReadFile* file) const
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{
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tinygltf::Model model {};
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tinygltf::TinyGLTF loader {};
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std::string err {};
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std::string warn {};
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auto buf = std::make_unique<char[]>(file->getSize());
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file->read(buf.get(), file->getSize());
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return loader.LoadASCIIFromString(
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&model, &err, &warn, buf.get(), file->getSize(), "", 1);
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}
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} // namespace irr
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} // namespace scene
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