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
152

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

#[derive(Debug, Clone)]
pub struct VermillionWidthMorph {
    pub upper_width: f32,
    pub lower_width: f32,
    pub corner_width: f32,
}

pub fn new_vermillion_width_morph() -> VermillionWidthMorph {
    VermillionWidthMorph {
        upper_width: 0.0,
        lower_width: 0.0,
        corner_width: 0.0,
    }
}

pub fn vw_set_upper(m: &mut VermillionWidthMorph, v: f32) {
    m.upper_width = v.clamp(0.0, 1.0);
}

pub fn vw_set_lower(m: &mut VermillionWidthMorph, v: f32) {
    m.lower_width = v.clamp(0.0, 1.0);
}

pub fn vw_overall_weight(m: &VermillionWidthMorph) -> f32 {
    (m.upper_width + m.lower_width + m.corner_width) / 3.0
}

pub fn vw_blend(
    a: &VermillionWidthMorph,
    b: &VermillionWidthMorph,
    t: f32,
) -> VermillionWidthMorph {
    let t = t.clamp(0.0, 1.0);
    VermillionWidthMorph {
        upper_width: a.upper_width + (b.upper_width - a.upper_width) * t,
        lower_width: a.lower_width + (b.lower_width - a.lower_width) * t,
        corner_width: a.corner_width + (b.corner_width - a.corner_width) * t,
    }
}

pub fn vw_is_wide(m: &VermillionWidthMorph) -> bool {
    m.upper_width > 0.5 && m.lower_width > 0.5
}

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

    #[test]
    fn test_new_defaults() {
        /* all zero */
        let m = new_vermillion_width_morph();
        assert_eq!(m.upper_width, 0.0);
    }

    #[test]
    fn test_set_upper() {
        /* valid value */
        let mut m = new_vermillion_width_morph();
        vw_set_upper(&mut m, 0.6);
        assert!((m.upper_width - 0.6).abs() < 1e-6);
    }

    #[test]
    fn test_set_upper_clamp_high() {
        /* clamp above 1 */
        let mut m = new_vermillion_width_morph();
        vw_set_upper(&mut m, 2.0);
        assert_eq!(m.upper_width, 1.0);
    }

    #[test]
    fn test_set_lower_clamp_low() {
        /* clamp below 0 */
        let mut m = new_vermillion_width_morph();
        vw_set_lower(&mut m, -0.5);
        assert_eq!(m.lower_width, 0.0);
    }

    #[test]
    fn test_overall_weight() {
        /* average */
        let m = VermillionWidthMorph {
            upper_width: 0.3,
            lower_width: 0.6,
            corner_width: 0.9,
        };
        assert!((vw_overall_weight(&m) - 0.6).abs() < 1e-5);
    }

    #[test]
    fn test_is_wide_false_both_zero() {
        /* both zero => not wide */
        let m = new_vermillion_width_morph();
        assert!(!vw_is_wide(&m));
    }

    #[test]
    fn test_is_wide_false_one_below() {
        /* only upper wide */
        let m = VermillionWidthMorph {
            upper_width: 0.8,
            lower_width: 0.2,
            corner_width: 0.0,
        };
        assert!(!vw_is_wide(&m));
    }

    #[test]
    fn test_is_wide_true() {
        /* both above 0.5 */
        let m = VermillionWidthMorph {
            upper_width: 0.8,
            lower_width: 0.7,
            corner_width: 0.0,
        };
        assert!(vw_is_wide(&m));
    }

    #[test]
    fn test_blend() {
        /* midpoint */
        let a = VermillionWidthMorph {
            upper_width: 0.0,
            lower_width: 0.0,
            corner_width: 0.0,
        };
        let b = VermillionWidthMorph {
            upper_width: 1.0,
            lower_width: 1.0,
            corner_width: 1.0,
        };
        let c = vw_blend(&a, &b, 0.5);
        assert!((c.upper_width - 0.5).abs() < 1e-6);
    }

    #[test]
    fn test_clone() {
        /* clone independent */
        let m = VermillionWidthMorph {
            upper_width: 0.3,
            lower_width: 0.4,
            corner_width: 0.5,
        };
        let m2 = m.clone();
        assert_eq!(m.upper_width, m2.upper_width);
    }
}