oxihuman-morph 0.1.2

Parametric morphology engine for human body generation — targets, blendshapes, FACS
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

// Copyright (C) 2026 COOLJAPAN OU (Team KitaSan)
// SPDX-License-Identifier: Apache-2.0
#![allow(dead_code)]

//! Pharynx shape morph — controls constriction, length, and wall tension.

/// Pharynx morph configuration.
#[derive(Debug, Clone)]
pub struct PharynxMorph {
    pub constriction: f32,
    pub length: f32,
    pub wall_tension: f32,
    pub epiglottis_tilt: f32,
}

impl PharynxMorph {
    pub fn new() -> Self {
        Self {
            constriction: 0.0,
            length: 0.5,
            wall_tension: 0.4,
            epiglottis_tilt: 0.0,
        }
    }
}

impl Default for PharynxMorph {
    fn default() -> Self {
        Self::new()
    }
}

/// Create a new pharynx morph.
pub fn new_pharynx_morph() -> PharynxMorph {
    PharynxMorph::new()
}

/// Set pharyngeal constriction (0 = open, 1 = fully constricted).
pub fn pharynx_set_constriction(m: &mut PharynxMorph, v: f32) {
    m.constriction = v.clamp(0.0, 1.0);
}

/// Set pharynx length scaling.
pub fn pharynx_set_length(m: &mut PharynxMorph, v: f32) {
    m.length = v.clamp(0.0, 1.0);
}

/// Set posterior wall tension.
pub fn pharynx_set_wall_tension(m: &mut PharynxMorph, v: f32) {
    m.wall_tension = v.clamp(0.0, 1.0);
}

/// Set epiglottis tilt into pharynx.
pub fn pharynx_set_epiglottis_tilt(m: &mut PharynxMorph, v: f32) {
    m.epiglottis_tilt = v.clamp(0.0, 1.0);
}

/// Effective cross-sectional area (inverse of constriction).
pub fn pharynx_cross_section(m: &PharynxMorph) -> f32 {
    (1.0 - m.constriction).max(0.0)
}

/// Serialize to JSON-like string.
pub fn pharynx_morph_to_json(m: &PharynxMorph) -> String {
    format!(
        r#"{{"constriction":{:.4},"length":{:.4},"wall_tension":{:.4},"epiglottis_tilt":{:.4}}}"#,
        m.constriction, m.length, m.wall_tension, m.epiglottis_tilt
    )
}

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

    #[test]
    fn test_defaults() {
        let m = new_pharynx_morph();
        assert_eq!(m.constriction, 0.0);
    }

    #[test]
    fn test_constriction_clamp() {
        let mut m = new_pharynx_morph();
        pharynx_set_constriction(&mut m, 2.0);
        assert_eq!(m.constriction, 1.0);
    }

    #[test]
    fn test_cross_section_open() {
        let m = new_pharynx_morph();
        assert!((pharynx_cross_section(&m) - 1.0).abs() < 1e-6);
    }

    #[test]
    fn test_cross_section_closed() {
        let mut m = new_pharynx_morph();
        pharynx_set_constriction(&mut m, 1.0);
        assert_eq!(pharynx_cross_section(&m), 0.0);
    }

    #[test]
    fn test_length() {
        let mut m = new_pharynx_morph();
        pharynx_set_length(&mut m, 0.7);
        assert!((m.length - 0.7).abs() < 1e-6);
    }

    #[test]
    fn test_wall_tension() {
        let mut m = new_pharynx_morph();
        pharynx_set_wall_tension(&mut m, 0.9);
        assert!((m.wall_tension - 0.9).abs() < 1e-6);
    }

    #[test]
    fn test_epiglottis_tilt() {
        let mut m = new_pharynx_morph();
        pharynx_set_epiglottis_tilt(&mut m, 0.5);
        assert!((m.epiglottis_tilt - 0.5).abs() < 1e-6);
    }

    #[test]
    fn test_json_keys() {
        let m = new_pharynx_morph();
        let s = pharynx_morph_to_json(&m);
        assert!(s.contains("epiglottis_tilt"));
    }

    #[test]
    fn test_clone() {
        let m = new_pharynx_morph();
        let m2 = m.clone();
        assert!((m2.length - m.length).abs() < 1e-6);
    }
}