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
136
137
138
139
140
141
142
143
144
145
146
147
148
149

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

//! Bow leg (genu varum) leg morph.

/// Bow leg configuration.
#[derive(Debug, Clone)]
pub struct BowLegMorphConfig {
    pub varus_angle: f32,
    pub tibial_torsion: f32,
    pub ankle_inversion: f32,
}

impl Default for BowLegMorphConfig {
    fn default() -> Self {
        Self {
            varus_angle: 0.0,
            tibial_torsion: 0.0,
            ankle_inversion: 0.0,
        }
    }
}

/// Bow leg morph state.
#[derive(Debug, Clone)]
pub struct BowLegMorph {
    pub config: BowLegMorphConfig,
    pub intensity: f32,
    pub symmetric: bool,
}

impl BowLegMorph {
    pub fn new() -> Self {
        Self {
            config: BowLegMorphConfig::default(),
            intensity: 0.0,
            symmetric: true,
        }
    }
}

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

/// Create a new BowLegMorph.
pub fn new_bow_leg_morph() -> BowLegMorph {
    BowLegMorph::new()
}

/// Set varus angle factor (0.0–1.0).
pub fn bow_leg_set_varus(morph: &mut BowLegMorph, v: f32) {
    morph.config.varus_angle = v.clamp(0.0, 1.0);
}

/// Set tibial torsion component.
pub fn bow_leg_set_torsion(morph: &mut BowLegMorph, v: f32) {
    morph.config.tibial_torsion = v.clamp(0.0, 1.0);
}

/// Set ankle inversion factor.
pub fn bow_leg_set_inversion(morph: &mut BowLegMorph, v: f32) {
    morph.config.ankle_inversion = v.clamp(0.0, 1.0);
}

/// Compute effective bow-out distance factor.
pub fn bow_leg_bow_out(morph: &BowLegMorph) -> f32 {
    morph.intensity * morph.config.varus_angle
}

/// Serialize to JSON.
pub fn bow_leg_to_json(morph: &BowLegMorph) -> String {
    format!(
        r#"{{"intensity":{},"varus_angle":{},"tibial_torsion":{},"ankle_inversion":{}}}"#,
        morph.intensity,
        morph.config.varus_angle,
        morph.config.tibial_torsion,
        morph.config.ankle_inversion,
    )
}

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

    #[test]
    fn test_new() {
        let m = new_bow_leg_morph();
        assert!((m.config.varus_angle - 0.0).abs() < 1e-6 /* default */);
    }

    #[test]
    fn test_varus_clamp_high() {
        let mut m = new_bow_leg_morph();
        bow_leg_set_varus(&mut m, 10.0);
        assert!((m.config.varus_angle - 1.0).abs() < 1e-6 /* clamped */);
    }

    #[test]
    fn test_varus_clamp_low() {
        let mut m = new_bow_leg_morph();
        bow_leg_set_varus(&mut m, -1.0);
        assert!((m.config.varus_angle - 0.0).abs() < 1e-6 /* clamped to 0 */);
    }

    #[test]
    fn test_torsion() {
        let mut m = new_bow_leg_morph();
        bow_leg_set_torsion(&mut m, 0.6);
        assert!((m.config.tibial_torsion - 0.6).abs() < 1e-6 /* stored */);
    }

    #[test]
    fn test_inversion() {
        let mut m = new_bow_leg_morph();
        bow_leg_set_inversion(&mut m, 0.2);
        assert!((m.config.ankle_inversion - 0.2).abs() < 1e-6 /* stored */);
    }

    #[test]
    fn test_bow_out_zero() {
        let m = new_bow_leg_morph();
        assert!((bow_leg_bow_out(&m) - 0.0).abs() < 1e-6 /* zero */);
    }

    #[test]
    fn test_bow_out_nonzero() {
        let mut m = new_bow_leg_morph();
        bow_leg_set_varus(&mut m, 1.0);
        m.intensity = 0.5;
        assert!((bow_leg_bow_out(&m) - 0.5).abs() < 1e-6 /* 0.5 */);
    }

    #[test]
    fn test_json_key() {
        let m = new_bow_leg_morph();
        let j = bow_leg_to_json(&m);
        assert!(j.contains("varus_angle") /* key present */);
    }

    #[test]
    fn test_default_symmetric() {
        let m = BowLegMorph::default();
        assert!(m.symmetric /* symmetric */);
    }
}