void Model::Load(const String& path)
{
std::vector<String> lines = utils::SplitString(utils::ReadFile(path), '\n');
VertexSet inputVertices;
std::vector<Vertex> vertices;
std::vector<uint> indices;
std::unordered_map<IndexSet, int32> mapping;
uint i = 0;
for (String line : lines)
{
const char* cstr = line.c_str();
if (strstr(cstr, "#")) // Comment
{
continue;
}
else if (strstr(cstr, "v"))
{
if (strstr(cstr, "vt"))
{
vec2 uv;
int32 result = sscanf(cstr, "%*s %f %f", &uv.x, &uv.y);
if (result == 0)
continue;
inputVertices.uvs.push_back(uv);
}
else if (strstr(cstr, "vn"))
{
vec3 normal;
int32 result = sscanf(cstr, "%*s %f %f %f", &normal.x, &normal.y, &normal.z);
if (result == 0)
continue;
inputVertices.normals.push_back(normal);
}
else
{
vec3 position;
int32 result = sscanf(cstr, "%*s %f %f %f", &position.x, &position.y, &position.z);
if (result == 0)
continue;
inputVertices.positions.push_back(position);
}
}
else if (strstr(cstr, "f"))
{
IndexSet indexSet[3];
int32 result = sscanf(cstr, "%*s %d/%d/%d %d/%d/%d %d/%d/%d", &indexSet[0].position, &indexSet[0].uv, &indexSet[0].normal, &indexSet[1].position, &indexSet[1].uv, &indexSet[1].normal, &indexSet[2].position, &indexSet[2].uv, &indexSet[2].normal);
if (result == 0)
continue;
InsertVertex(vertices, indices, mapping, inputVertices, indexSet[0]);
InsertVertex(vertices, indices, mapping, inputVertices, indexSet[1]);
InsertVertex(vertices, indices, mapping, inputVertices, indexSet[2]);
}
if (i++ % 1000 == 0)
SP_INFO((int32)((i / (float)lines.size()) * 100.0f), "%");
}
SP_INFO("100%");
SP_INFO("Loaded ", path);
API::Buffer* buffer = new API::Buffer(GL_ARRAY_BUFFER, GL_STATIC_DRAW);
buffer->Bind();
buffer->SetData(vertices.size() * sizeof(Vertex), &vertices[0]);
buffer->layout.Push<vec3>("position");
buffer->layout.Push<vec3>("normal");
buffer->layout.Push<vec2>("uv");
VertexArray* va = new VertexArray();
va->Bind();
va->PushBuffer(buffer);
IndexBuffer* ib = new IndexBuffer(&indices[0], indices.size());
m_Mesh = new Mesh(va, ib, nullptr);
}
