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
150
151

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

#[derive(Debug, Clone)]
pub struct SymphysisMorph {
    pub width: f32,
    pub height: f32,
    pub curvature: f32,
}

pub fn new_symphysis_morph() -> SymphysisMorph {
    SymphysisMorph {
        width: 0.0,
        height: 0.0,
        curvature: 0.0,
    }
}

pub fn sy_set_width(m: &mut SymphysisMorph, v: f32) {
    m.width = v.clamp(0.0, 1.0);
}

pub fn sy_set_height(m: &mut SymphysisMorph, v: f32) {
    m.height = v.clamp(0.0, 1.0);
}

pub fn sy_set_curvature(m: &mut SymphysisMorph, v: f32) {
    m.curvature = v.clamp(0.0, 1.0);
}

pub fn sy_overall_weight(m: &SymphysisMorph) -> f32 {
    (m.width + m.height + m.curvature) / 3.0
}

pub fn sy_blend(a: &SymphysisMorph, b: &SymphysisMorph, t: f32) -> SymphysisMorph {
    let t = t.clamp(0.0, 1.0);
    SymphysisMorph {
        width: a.width + (b.width - a.width) * t,
        height: a.height + (b.height - a.height) * t,
        curvature: a.curvature + (b.curvature - a.curvature) * t,
    }
}

pub fn sy_is_wide(m: &SymphysisMorph) -> bool {
    m.width > 0.5
}

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

    #[test]
    fn test_new_defaults() {
        /* zero init */
        let m = new_symphysis_morph();
        assert_eq!(m.width, 0.0);
        assert_eq!(m.height, 0.0);
        assert_eq!(m.curvature, 0.0);
    }

    #[test]
    fn test_set_width() {
        /* valid width */
        let mut m = new_symphysis_morph();
        sy_set_width(&mut m, 0.6);
        assert!((m.width - 0.6).abs() < 1e-6);
    }

    #[test]
    fn test_set_width_clamp_high() {
        /* clamp high */
        let mut m = new_symphysis_morph();
        sy_set_width(&mut m, 5.0);
        assert_eq!(m.width, 1.0);
    }

    #[test]
    fn test_set_height_clamp_low() {
        /* clamp low */
        let mut m = new_symphysis_morph();
        sy_set_height(&mut m, -0.5);
        assert_eq!(m.height, 0.0);
    }

    #[test]
    fn test_set_curvature() {
        /* valid curvature */
        let mut m = new_symphysis_morph();
        sy_set_curvature(&mut m, 0.7);
        assert!((m.curvature - 0.7).abs() < 1e-6);
    }

    #[test]
    fn test_overall_weight() {
        /* average */
        let m = SymphysisMorph {
            width: 0.3,
            height: 0.6,
            curvature: 0.9,
        };
        assert!((sy_overall_weight(&m) - 0.6).abs() < 1e-5);
    }

    #[test]
    fn test_is_wide_false() {
        /* default not wide */
        let m = new_symphysis_morph();
        assert!(!sy_is_wide(&m));
    }

    #[test]
    fn test_is_wide_true() {
        /* above 0.5 */
        let m = SymphysisMorph {
            width: 0.8,
            height: 0.0,
            curvature: 0.0,
        };
        assert!(sy_is_wide(&m));
    }

    #[test]
    fn test_blend() {
        /* midpoint blend */
        let a = SymphysisMorph {
            width: 0.0,
            height: 0.0,
            curvature: 0.0,
        };
        let b = SymphysisMorph {
            width: 1.0,
            height: 1.0,
            curvature: 1.0,
        };
        let c = sy_blend(&a, &b, 0.5);
        assert!((c.width - 0.5).abs() < 1e-6);
    }

    #[test]
    fn test_clone() {
        /* clone is independent */
        let m = SymphysisMorph {
            width: 0.2,
            height: 0.5,
            curvature: 0.8,
        };
        let m2 = m.clone();
        assert_eq!(m.curvature, m2.curvature);
    }
}