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Simplify binary float parsing in BinaryStlReader #29

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Simplify binary float parsing in BinaryStlReader #29

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18 changes: 4 additions & 14 deletions src/binary_reader.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -33,21 +33,11 @@ impl<'a> BinaryStlReader<'a> {
let mut buf = [0u8; 50];
self.reader.read_exact(&mut buf)?;

let f = |offset: usize| -> f32 {
f32::from_le_bytes([
buf[offset],
buf[offset + 1],
buf[offset + 2],
buf[offset + 3],
])
};
let f = |o: usize| f32::from_le_bytes(buf[o..o + 4].try_into().unwrap());
let v = |base: usize| [f(base), f(base + 4), f(base + 8)];

let normal = Normal::new([f(0), f(4), f(8)]);
let vertices = [
Vertex::new([f(12), f(16), f(20)]),
Vertex::new([f(24), f(28), f(32)]),
Vertex::new([f(36), f(40), f(44)]),
];
let normal = Normal::new(v(0));
let vertices = [Vertex::new(v(12)), Vertex::new(v(24)), Vertex::new(v(36))];
// buf[48..50] is the attribute byte count, ignored

Ok(Triangle { normal, vertices })
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