oxihuman-viewer 0.2.1

wgpu/WebGPU rendering adapter for OxiHuman
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)]
#![allow(dead_code)]

//! Halo/glow effect for selected objects or highlights.

use std::f32::consts::PI;

/// Halo effect configuration.
#[allow(dead_code)]
#[derive(Debug, Clone)]
pub struct HaloConfig {
    pub color: [f32; 3],
    pub intensity: f32,
    pub radius: f32,
    pub falloff: f32,
    pub enabled: bool,
}

#[allow(dead_code)]
pub fn default_halo_config() -> HaloConfig {
    HaloConfig {
        color: [1.0, 0.9, 0.3],
        intensity: 1.0,
        radius: 5.0,
        falloff: 2.0,
        enabled: true,
    }
}

#[allow(dead_code)]
pub fn set_halo_color(cfg: &mut HaloConfig, r: f32, g: f32, b: f32) {
    cfg.color = [r.clamp(0.0, 1.0), g.clamp(0.0, 1.0), b.clamp(0.0, 1.0)];
}

#[allow(dead_code)]
pub fn set_halo_intensity(cfg: &mut HaloConfig, value: f32) {
    cfg.intensity = value.clamp(0.0, 10.0);
}

#[allow(dead_code)]
pub fn set_halo_radius(cfg: &mut HaloConfig, value: f32) {
    cfg.radius = value.clamp(0.1, 100.0);
}

#[allow(dead_code)]
pub fn set_halo_falloff(cfg: &mut HaloConfig, value: f32) {
    cfg.falloff = value.clamp(0.1, 10.0);
}

#[allow(dead_code)]
pub fn enable_halo(cfg: &mut HaloConfig) {
    cfg.enabled = true;
}

#[allow(dead_code)]
pub fn disable_halo(cfg: &mut HaloConfig) {
    cfg.enabled = false;
}

#[allow(dead_code)]
pub fn halo_strength_at_distance(cfg: &HaloConfig, distance: f32) -> f32 {
    if distance <= 0.0 { return cfg.intensity; }
    let ratio = (distance / cfg.radius).clamp(0.0, 1.0);
    let angle = ratio * PI * 0.5;
    cfg.intensity * (1.0 - angle.sin()).powf(cfg.falloff)
}

#[allow(dead_code)]
pub fn halo_area(cfg: &HaloConfig) -> f32 {
    PI * cfg.radius * cfg.radius
}

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

    #[test]
    fn test_default_config() {
        let cfg = default_halo_config();
        assert!(cfg.enabled);
        assert!((cfg.intensity - 1.0).abs() < 1e-6);
    }

    #[test]
    fn test_set_color() {
        let mut cfg = default_halo_config();
        set_halo_color(&mut cfg, 0.5, 0.5, 0.5);
        assert!((cfg.color[0] - 0.5).abs() < 1e-6);
    }

    #[test]
    fn test_set_intensity_clamp() {
        let mut cfg = default_halo_config();
        set_halo_intensity(&mut cfg, 15.0);
        assert!((cfg.intensity - 10.0).abs() < 1e-6);
    }

    #[test]
    fn test_set_radius() {
        let mut cfg = default_halo_config();
        set_halo_radius(&mut cfg, 20.0);
        assert!((cfg.radius - 20.0).abs() < 1e-6);
    }

    #[test]
    fn test_set_falloff() {
        let mut cfg = default_halo_config();
        set_halo_falloff(&mut cfg, 3.0);
        assert!((cfg.falloff - 3.0).abs() < 1e-6);
    }

    #[test]
    fn test_enable_disable() {
        let mut cfg = default_halo_config();
        disable_halo(&mut cfg);
        assert!(!cfg.enabled);
        enable_halo(&mut cfg);
        assert!(cfg.enabled);
    }

    #[test]
    fn test_strength_at_zero() {
        let cfg = default_halo_config();
        let s = halo_strength_at_distance(&cfg, 0.0);
        assert!((s - cfg.intensity).abs() < 1e-6);
    }

    #[test]
    fn test_strength_at_radius() {
        let cfg = default_halo_config();
        let s = halo_strength_at_distance(&cfg, cfg.radius);
        assert!(s < 0.01);
    }

    #[test]
    fn test_halo_area() {
        let cfg = default_halo_config();
        let a = halo_area(&cfg);
        assert!((a - PI * 25.0).abs() < 1e-4);
    }

    #[test]
    fn test_strength_decreases() {
        let cfg = default_halo_config();
        let s1 = halo_strength_at_distance(&cfg, 1.0);
        let s2 = halo_strength_at_distance(&cfg, 3.0);
        assert!(s1 > s2);
    }
}