gltf/skin/
iter.rs

1use std::slice;
2
3use crate::{Document, Node};
4
5/// An `Iterator` that visits the joints of a `Skin`.
6#[derive(Clone, Debug)]
7pub struct Joints<'a> {
8    /// The parent `Document` struct.
9    pub(crate) document: &'a Document,
10
11    /// The internal node index iterator.
12    pub(crate) iter: slice::Iter<'a, json::Index<json::scene::Node>>,
13}
14
15impl<'a> ExactSizeIterator for Joints<'a> {}
16impl<'a> Iterator for Joints<'a> {
17    type Item = Node<'a>;
18    fn next(&mut self) -> Option<Self::Item> {
19        self.iter
20            .next()
21            .map(|index| self.document.nodes().nth(index.value()).unwrap())
22    }
23    fn size_hint(&self) -> (usize, Option<usize>) {
24        self.iter.size_hint()
25    }
26    fn count(self) -> usize {
27        self.iter.count()
28    }
29    fn last(self) -> Option<Self::Item> {
30        let document = self.document;
31        self.iter
32            .last()
33            .map(|index| document.nodes().nth(index.value()).unwrap())
34    }
35    fn nth(&mut self, n: usize) -> Option<Self::Item> {
36        self.iter
37            .nth(n)
38            .map(|index| self.document.nodes().nth(index.value()).unwrap())
39    }
40}
gltf/skin/iter.rs

gltf/skin/
iter.rs
