bb_camera/
camera3d.rs

1//! The main module for the 3d camera
2
3use bb_geometry::rotation3d::Rotation3D;
4use bb_geometry::vector3d::Vector3D;
5use std::f64::consts::PI;
6
7pub struct Camera3D {
8    pos: Vector3D,
9    psi: f64,
10    theta: f64,
11    phi: f64,
12    fov_x: f64,
13    fov_y: f64,
14}
15
16const DEFAULT_FOV_X: f64 = 120.0;
17const DEFAULT_FOV_Y: f64 = 120.0;
18const DEFAULT_POS: Vector3D = Vector3D {
19    x: 0.0,
20    y: 0.0,
21    z: 0.0,
22};
23const DEFAULT_PHI: f64 = 0.0;
24const DEFAULT_THETA: f64 = PI / 2.0;
25
26impl Camera3D {
27    pub fn new() -> Self {
28        Camera3D {
29            pos: DEFAULT_POS,
30            psi: DEFAULT_PHI,
31            theta: DEFAULT_THETA,
32            phi: DEFAULT_PHI,
33            fov_x: DEFAULT_FOV_X,
34            fov_y: DEFAULT_FOV_Y,
35        }
36    }
37
38    pub fn move_pos(&mut self, delta_v: &Vector3D) {
39        self.pos = self.pos.plus(delta_v);
40    }
41
42    pub fn move_psi(&mut self, delta_psi: f64) {
43        self.psi += delta_psi;
44    }
45
46    pub fn move_theta(&mut self, delta_theta: f64) {
47        self.theta += delta_theta;
48    }
49
50    pub fn move_phi(&mut self, delta_phi: f64) {
51        self.phi += delta_phi;
52    }
53
54    pub fn adjust_fov(&mut self, delta_fov_x: f64, delta_fov_y: f64) {
55        self.fov_x += delta_fov_x;
56        self.fov_y += delta_fov_y;
57    }
58
59    pub fn rotation_matrix(&self) -> Rotation3D {
60        Rotation3D::from_euler_angles(self.psi, self.theta, self.phi)
61    }
62
63    pub fn position(&self) -> &Vector3D {
64        &self.pos
65    }
66
67    pub fn theta(&self) -> f64 {
68        self.theta
69    }
70
71    pub fn phi(&self) -> f64 {
72        self.phi
73    }
74
75    pub fn psi(&self) -> f64 {
76        self.psi
77    }
78
79    pub fn fov_x(&self) -> f64 {
80        self.fov_x
81    }
82
83    pub fn fov_y(&self) -> f64 {
84        self.fov_y
85    }
86}
87
88#[cfg(test)]
89mod tests {
90    use super::*;
91    #[test]
92    fn test_references() {
93        // given
94        let camera = Camera3D::new();
95
96        // when
97        let mut x = camera.psi();
98        x += 0.5;
99
100        // then
101        assert_eq!(x, 0.5);
102        assert_eq!(camera.psi(), 0.0);
103    }
104}
bb_camera/camera3d.rs

bb_camera/
camera3d.rs
