| 360 | R: Real, |
| 361 | { |
| 362 | fn from(particles: Particles<'a, R>) -> Self { |
| 363 | let particles = particles.0; |
| 364 | |
| 365 | let points = { |
| 366 | let mut points: Vec<R> = Vec::with_capacity(particles.len() * 3); |
| 367 | for p in particles.iter() { |
| 368 | points.extend(p.as_slice()); |
| 369 | } |
| 370 | points |
| 371 | }; |
| 372 | |
| 373 | // Each particle has a cell of type `Vertex` |
| 374 | let cell_types = vec![CellType::Vertex; particles.len()]; |
| 375 | |
| 376 | let vertices = { |
| 377 | let mut vertices = Vec::with_capacity(particles.len() * (1 + 1)); |
| 378 | for i in 0..particles.len() { |
| 379 | // Number of vertices of the cell |
| 380 | vertices.push(1); |
| 381 | // Vertex index |
| 382 | vertices.push(i as u32); |
| 383 | } |
| 384 | vertices |
| 385 | }; |
| 386 | |
| 387 | UnstructuredGridPiece { |
| 388 | points: points.into(), |
| 389 | cells: Cells { |
| 390 | cell_verts: VertexNumbers::Legacy { |
| 391 | num_cells: cell_types.len() as u32, |
| 392 | vertices, |
| 393 | }, |
| 394 | types: cell_types, |
| 395 | }, |
| 396 | data: Attributes::new(), |
| 397 | } |
| 398 | } |
| 399 | } |
| 400 | |
| 401 | #[cfg(test)] |