mesh.cpp

std::vector<tinyobj::shape_t> shapes;
	std::vector<tinyobj::material_t> materials;

	std::string err = tinyobj::LoadObj(shapes, materials, m_Filename.c_str(), "../Res/Models/");

	if (!err.empty())
	{
		// fail
	}

	mNumFaces = shapes[0].mesh.indices.size() / 3;

	verts = new Vertex[shapes[0].mesh.positions.size() / 3];
	indices = new int[shapes[0].mesh.indices.size()];

	for (int i = 0; i < int(shapes[0].mesh.indices.size()); ++i)
	{
		indices[i] = shapes[0].mesh.indices[i];
	}

	for (int i = 0; i < int(shapes[0].mesh.positions.size() / 3); ++i)
	{
		int ri = i * 3;
		int rui = i * 2;
		verts[i].pos = D3DXVECTOR3(-shapes[0].mesh.positions[ri], shapes[0].mesh.positions[ri + 1], shapes[0].mesh.positions[ri + 2]);
		verts[i].pos *= m_Scale;
		verts[i].Normal = D3DXVECTOR3(shapes[0].mesh.normals[ri], shapes[0].mesh.normals[ri + 1], shapes[0].mesh.normals[ri + 2]);
		verts[i].UV = D3DXVECTOR2(shapes[0].mesh.texcoords[rui], -shapes[0].mesh.texcoords[rui + 1]);
	}

	D3D10_BUFFER_DESC vbd;
	vbd.Usage = D3D10_USAGE_IMMUTABLE;
	vbd.ByteWidth = sizeof(Vertex) * shapes[0].mesh.positions.size() / 3;
	vbd.BindFlags = D3D10_BIND_VERTEX_BUFFER;
	vbd.CPUAccessFlags = 0;
	vbd.MiscFlags = 0;
	D3D10_SUBRESOURCE_DATA vinitData;
	vinitData.pSysMem = verts;
	HR(_device->CreateBuffer(&vbd, &vinitData, &mVB));

	D3D10_BUFFER_DESC ibd;
	ibd.Usage = D3D10_USAGE_IMMUTABLE;
	ibd.ByteWidth = (sizeof(DWORD) * shapes[0].mesh.indices.size());
	ibd.BindFlags = D3D10_BIND_INDEX_BUFFER;
	ibd.CPUAccessFlags = 0;
	ibd.MiscFlags = 0;
	D3D10_SUBRESOURCE_DATA iinitData;
	iinitData.pSysMem = indices;
	HR(_device->CreateBuffer(&ibd, &iinitData, &mIB));