oxihuman_morph/
stretch_mark_morph.rs

1// Copyright (C) 2026 COOLJAPAN OU (Team KitaSan)
2// SPDX-License-Identifier: Apache-2.0
3#![allow(dead_code)]
4
5//! Stretch mark surface morph stub.
6
7/// Body region where stretch marks appear.
8#[derive(Debug, Clone, Copy, PartialEq)]
9pub enum StretchMarkRegion {
10    Abdomen,
11    Hips,
12    Thighs,
13    UpperArms,
14    Breasts,
15}
16
17/// A stretch mark entry.
18#[derive(Debug, Clone)]
19pub struct StretchMarkEntry {
20    pub region: StretchMarkRegion,
21    pub density: f32,
22    pub age_factor: f32,
23}
24
25/// Stretch mark morph controller.
26#[derive(Debug, Clone)]
27pub struct StretchMarkMorph {
28    pub entries: Vec<StretchMarkEntry>,
29    pub global_intensity: f32,
30    pub morph_count: usize,
31    pub enabled: bool,
32}
33
34impl StretchMarkMorph {
35    pub fn new(morph_count: usize) -> Self {
36        StretchMarkMorph {
37            entries: Vec::new(),
38            global_intensity: 0.5,
39            morph_count,
40            enabled: true,
41        }
42    }
43}
44
45/// Create a new stretch mark morph.
46pub fn new_stretch_mark_morph(morph_count: usize) -> StretchMarkMorph {
47    StretchMarkMorph::new(morph_count)
48}
49
50/// Add a stretch mark entry.
51pub fn smm_add_entry(morph: &mut StretchMarkMorph, entry: StretchMarkEntry) {
52    morph.entries.push(entry);
53}
54
55/// Set global intensity.
56pub fn smm_set_intensity(morph: &mut StretchMarkMorph, intensity: f32) {
57    morph.global_intensity = intensity.clamp(0.0, 1.0);
58}
59
60/// Clear all entries.
61pub fn smm_clear(morph: &mut StretchMarkMorph) {
62    morph.entries.clear();
63}
64
65/// Evaluate morph weights (stub: uniform from global_intensity).
66pub fn smm_evaluate(morph: &StretchMarkMorph) -> Vec<f32> {
67    /* Stub: uniform weight from global_intensity */
68    if !morph.enabled || morph.morph_count == 0 {
69        return vec![];
70    }
71    vec![morph.global_intensity; morph.morph_count]
72}
73
74/// Enable or disable.
75pub fn smm_set_enabled(morph: &mut StretchMarkMorph, enabled: bool) {
76    morph.enabled = enabled;
77}
78
79/// Return entry count.
80pub fn smm_entry_count(morph: &StretchMarkMorph) -> usize {
81    morph.entries.len()
82}
83
84/// Serialize to JSON-like string.
85pub fn smm_to_json(morph: &StretchMarkMorph) -> String {
86    format!(
87        r#"{{"entry_count":{},"global_intensity":{},"morph_count":{},"enabled":{}}}"#,
88        morph.entries.len(),
89        morph.global_intensity,
90        morph.morph_count,
91        morph.enabled
92    )
93}
94
95#[cfg(test)]
96mod tests {
97    use super::*;
98
99    fn make_entry() -> StretchMarkEntry {
100        StretchMarkEntry {
101            region: StretchMarkRegion::Abdomen,
102            density: 0.5,
103            age_factor: 0.3,
104        }
105    }
106
107    #[test]
108    fn test_initial_empty() {
109        let m = new_stretch_mark_morph(4);
110        assert_eq!(smm_entry_count(&m), 0 /* no entries initially */);
111    }
112
113    #[test]
114    fn test_add_entry() {
115        let mut m = new_stretch_mark_morph(4);
116        smm_add_entry(&mut m, make_entry());
117        assert_eq!(smm_entry_count(&m), 1 /* one entry after add */);
118    }
119
120    #[test]
121    fn test_clear() {
122        let mut m = new_stretch_mark_morph(4);
123        smm_add_entry(&mut m, make_entry());
124        smm_clear(&mut m);
125        assert_eq!(smm_entry_count(&m), 0 /* cleared */);
126    }
127
128    #[test]
129    fn test_intensity_clamp() {
130        let mut m = new_stretch_mark_morph(4);
131        smm_set_intensity(&mut m, 2.0);
132        assert!((m.global_intensity - 1.0).abs() < 1e-6 /* clamped to 1.0 */);
133    }
134
135    #[test]
136    fn test_evaluate_length() {
137        let m = new_stretch_mark_morph(5);
138        assert_eq!(
139            smm_evaluate(&m).len(),
140            5 /* output must match morph_count */
141        );
142    }
143
144    #[test]
145    fn test_evaluate_disabled() {
146        let mut m = new_stretch_mark_morph(4);
147        smm_set_enabled(&mut m, false);
148        assert!(smm_evaluate(&m).is_empty() /* disabled must return empty */);
149    }
150
151    #[test]
152    fn test_to_json_has_entry_count() {
153        let m = new_stretch_mark_morph(4);
154        let j = smm_to_json(&m);
155        assert!(j.contains("\"entry_count\"") /* JSON must have entry_count */);
156    }
157
158    #[test]
159    fn test_enabled_default() {
160        let m = new_stretch_mark_morph(4);
161        assert!(m.enabled /* must be enabled by default */);
162    }
163
164    #[test]
165    fn test_evaluate_matches_intensity() {
166        let mut m = new_stretch_mark_morph(3);
167        smm_set_intensity(&mut m, 0.6);
168        let out = smm_evaluate(&m);
169        assert!((out[0] - 0.6).abs() < 1e-5 /* evaluate must match global_intensity */);
170    }
171
172    #[test]
173    fn test_region_variant() {
174        let e = StretchMarkEntry {
175            region: StretchMarkRegion::Thighs,
176            density: 0.4,
177            age_factor: 0.2,
178        };
179        assert_eq!(
180            e.region,
181            StretchMarkRegion::Thighs /* region must match */
182        );
183    }
184}
oxihuman_morph/stretch_mark_morph.rs

oxihuman_morph/
stretch_mark_morph.rs
