fbx_dom/objects/
null_node.rs

1//! FBX `NodeAttribute` / `Null` — Assimp [`Null`](https://github.com/assimp/assimp/blob/master/code/AssetLib/FBX/FBXDocument.h).
2
3use std::collections::HashMap;
4use std::convert::TryFrom;
5
6use crate::{OwnedObject, Property};
7
8use super::{FbxObjectTag, FbxTypeMismatch, fbx_object_tag};
9
10/// Null / locator node attribute (`NodeAttribute` + class `Null`).
11#[derive(Debug, PartialEq)]
12pub struct NullNode(pub OwnedObject);
13
14impl NullNode {
15    pub fn inner(&self) -> &OwnedObject {
16        &self.0
17    }
18
19    pub fn into_inner(self) -> OwnedObject {
20        self.0
21    }
22
23    /// Temporary bridge to Assimp-style node-attribute properties until typed accessors are added.
24    pub fn properties(&self) -> &HashMap<String, Property> {
25        &self.0.properties
26    }
27
28    pub fn property(&self, name: &str) -> Option<&Property> {
29        self.0.properties.get(name)
30    }
31}
32
33impl TryFrom<OwnedObject> for NullNode {
34    type Error = FbxTypeMismatch;
35
36    fn try_from(o: OwnedObject) -> Result<Self, Self::Error> {
37        match fbx_object_tag(&o) {
38            FbxObjectTag::NullNode => Ok(NullNode(o)),
39            _ => Err(FbxTypeMismatch::wrong_object_kind(
40                o,
41                "NullNode".to_string(),
42            )),
43        }
44    }
45}
46
47#[cfg(test)]
48mod tests {
49    use std::collections::HashMap;
50    use std::convert::TryFrom;
51
52    use crate::objects::{NODE_ATTRIBUTE_NULL_CLASS_NAME, NODE_ATTRIBUTE_TYPE_NAME};
53    use crate::{OwnedObject, Property};
54
55    use super::NullNode;
56
57    #[test]
58    fn property_accessors_return_owned_object_properties() {
59        let mut properties = HashMap::new();
60        properties.insert("Size".to_string(), Property::Float(100.0));
61        let o = OwnedObject {
62            object_index: 99,
63            name: "Null".into(),
64            type_name: NODE_ATTRIBUTE_TYPE_NAME.into(),
65            class_name: NODE_ATTRIBUTE_NULL_CLASS_NAME.into(),
66            properties,
67            attributes: HashMap::new(),
68            connected_object_ids: vec![],
69            object_property_targets: vec![],
70            pp_property_targets: HashMap::new(),
71        };
72        let null_node = NullNode::try_from(o).unwrap();
73        assert_eq!(null_node.property("Size"), Some(&Property::Float(100.0)));
74        assert_eq!(null_node.properties().len(), 1);
75    }
76}
fbx_dom/objects/null_node.rs

fbx_dom/objects/
null_node.rs
