oxihuman-export 0.1.2

Export pipeline for OxiHuman — glTF, COLLADA, STL, and streaming formats
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143

#![allow(dead_code)]
//! Export morph maps.

/// Morph map export data.
#[allow(dead_code)]
#[derive(Debug, Clone, PartialEq)]
pub struct MorphMapExport {
    pub name: String,
    pub deltas: Vec<[f32; 3]>,
}

/// Export a morph map.
#[allow(dead_code)]
pub fn export_morph_map(name: &str, deltas: &[[f32; 3]]) -> MorphMapExport {
    MorphMapExport {
        name: name.to_string(),
        deltas: deltas.to_vec(),
    }
}

/// Return the morph map count (number of deltas).
#[allow(dead_code)]
pub fn morph_map_count(exp: &MorphMapExport) -> usize {
    exp.deltas.len()
}

/// Return the morph map name.
#[allow(dead_code)]
pub fn morph_map_name(exp: &MorphMapExport) -> &str {
    &exp.name
}

/// Serialize to JSON.
#[allow(dead_code)]
pub fn morph_map_to_json(exp: &MorphMapExport) -> String {
    format!(
        "{{\"name\":\"{}\",\"delta_count\":{}}}",
        exp.name,
        exp.deltas.len()
    )
}

/// Serialize to bytes.
#[allow(dead_code)]
pub fn morph_map_to_bytes(exp: &MorphMapExport) -> Vec<u8> {
    let mut buf = Vec::new();
    for d in &exp.deltas {
        for &f in d {
            buf.extend_from_slice(&f.to_le_bytes());
        }
    }
    buf
}

/// Count non-zero deltas.
#[allow(dead_code)]
pub fn morph_map_delta_count(exp: &MorphMapExport) -> usize {
    exp.deltas
        .iter()
        .filter(|d| d[0].abs() > 1e-7 || d[1].abs() > 1e-7 || d[2].abs() > 1e-7)
        .count()
}

/// Compute export size.
#[allow(dead_code)]
pub fn morph_map_export_size(exp: &MorphMapExport) -> usize {
    exp.deltas.len() * 12
}

/// Validate morph map (no NaN/Inf).
#[allow(dead_code)]
pub fn validate_morph_map(exp: &MorphMapExport) -> bool {
    exp.deltas
        .iter()
        .all(|d| d.iter().all(|f| f.is_finite()))
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_export_morph_map() {
        let e = export_morph_map("smile", &[[0.1, 0.0, 0.0]]);
        assert_eq!(morph_map_count(&e), 1);
    }

    #[test]
    fn test_morph_map_name() {
        let e = export_morph_map("blink", &[]);
        assert_eq!(morph_map_name(&e), "blink");
    }

    #[test]
    fn test_morph_map_to_json() {
        let e = export_morph_map("t", &[[0.0; 3]]);
        let j = morph_map_to_json(&e);
        assert!(j.contains("\"name\":\"t\""));
    }

    #[test]
    fn test_morph_map_to_bytes() {
        let e = export_morph_map("t", &[[1.0, 2.0, 3.0]]);
        assert_eq!(morph_map_to_bytes(&e).len(), 12);
    }

    #[test]
    fn test_morph_map_delta_count() {
        let e = export_morph_map("t", &[[0.0; 3], [1.0, 0.0, 0.0]]);
        assert_eq!(morph_map_delta_count(&e), 1);
    }

    #[test]
    fn test_morph_map_export_size() {
        let e = export_morph_map("t", &[[0.0; 3]; 10]);
        assert_eq!(morph_map_export_size(&e), 120);
    }

    #[test]
    fn test_validate_morph_map() {
        let e = export_morph_map("t", &[[1.0, 2.0, 3.0]]);
        assert!(validate_morph_map(&e));
    }

    #[test]
    fn test_validate_nan() {
        let e = export_morph_map("t", &[[f32::NAN, 0.0, 0.0]]);
        assert!(!validate_morph_map(&e));
    }

    #[test]
    fn test_empty_morph_map() {
        let e = export_morph_map("e", &[]);
        assert_eq!(morph_map_count(&e), 0);
        assert_eq!(morph_map_export_size(&e), 0);
    }

    #[test]
    fn test_morph_map_count_all_zero() {
        let e = export_morph_map("t", &[[0.0; 3]; 5]);
        assert_eq!(morph_map_delta_count(&e), 0);
    }
}