graphene/
matrix.rs

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
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
// Take a look at the license at the top of the repository in the LICENSE file.

use std::fmt;

use glib::translate::*;

use crate::{ffi, Matrix, Point3D, Vec3, Vec4};

impl Matrix {
    #[doc(alias = "graphene_matrix_init_from_2d")]
    #[doc(alias = "init_from_2d")]
    pub fn from_2d(xx: f64, yx: f64, xy: f64, yy: f64, x_0: f64, y_0: f64) -> Self {
        assert_initialized_main_thread!();
        unsafe {
            let mut mat = Self::uninitialized();
            ffi::graphene_matrix_init_from_2d(mat.to_glib_none_mut().0, xx, yx, xy, yy, x_0, y_0);
            mat
        }
    }

    #[doc(alias = "graphene_matrix_init_from_float")]
    #[doc(alias = "init_from_float")]
    pub fn from_float(v: [f32; 16]) -> Self {
        assert_initialized_main_thread!();
        unsafe {
            let mut mat = Self::uninitialized();
            ffi::graphene_matrix_init_from_float(mat.to_glib_none_mut().0, v.as_ptr() as *const _);
            mat
        }
    }

    #[doc(alias = "graphene_matrix_init_from_vec4")]
    #[doc(alias = "init_from_vec4")]
    pub fn from_vec4(v0: &Vec4, v1: &Vec4, v2: &Vec4, v3: &Vec4) -> Self {
        assert_initialized_main_thread!();
        unsafe {
            let mut mat = Self::uninitialized();
            ffi::graphene_matrix_init_from_vec4(
                mat.to_glib_none_mut().0,
                v0.to_glib_none().0,
                v1.to_glib_none().0,
                v2.to_glib_none().0,
                v3.to_glib_none().0,
            );
            mat
        }
    }

    #[doc(alias = "graphene_matrix_init_frustum")]
    #[doc(alias = "init_frustum")]
    pub fn new_frustum(
        left: f32,
        right: f32,
        bottom: f32,
        top: f32,
        z_near: f32,
        z_far: f32,
    ) -> Self {
        assert_initialized_main_thread!();
        unsafe {
            let mut mat = Self::uninitialized();
            ffi::graphene_matrix_init_frustum(
                mat.to_glib_none_mut().0,
                left,
                right,
                bottom,
                top,
                z_near,
                z_far,
            );
            mat
        }
    }

    #[doc(alias = "graphene_matrix_init_identity")]
    #[doc(alias = "init_identity")]
    pub fn new_identity() -> Self {
        assert_initialized_main_thread!();
        unsafe {
            let mut mat = Self::uninitialized();
            ffi::graphene_matrix_init_identity(mat.to_glib_none_mut().0);
            mat
        }
    }

    #[doc(alias = "graphene_matrix_init_look_at")]
    #[doc(alias = "init_look_at")]
    pub fn new_look_at(eye: &Vec3, center: &Vec3, up: &Vec3) -> Self {
        assert_initialized_main_thread!();
        unsafe {
            let mut mat = Self::uninitialized();
            ffi::graphene_matrix_init_look_at(
                mat.to_glib_none_mut().0,
                eye.to_glib_none().0,
                center.to_glib_none().0,
                up.to_glib_none().0,
            );
            mat
        }
    }

    #[doc(alias = "graphene_matrix_init_ortho")]
    #[doc(alias = "init_ortho")]
    pub fn new_ortho(
        left: f32,
        right: f32,
        top: f32,
        bottom: f32,
        z_near: f32,
        z_far: f32,
    ) -> Self {
        assert_initialized_main_thread!();
        unsafe {
            let mut mat = Self::uninitialized();
            ffi::graphene_matrix_init_ortho(
                mat.to_glib_none_mut().0,
                left,
                right,
                top,
                bottom,
                z_near,
                z_far,
            );
            mat
        }
    }

    #[doc(alias = "graphene_matrix_init_perspective")]
    #[doc(alias = "init_perspective")]
    pub fn new_perspective(fovy: f32, aspect: f32, z_near: f32, z_far: f32) -> Self {
        assert_initialized_main_thread!();
        unsafe {
            let mut mat = Self::uninitialized();
            ffi::graphene_matrix_init_perspective(
                mat.to_glib_none_mut().0,
                fovy,
                aspect,
                z_near,
                z_far,
            );
            mat
        }
    }

    #[doc(alias = "graphene_matrix_init_rotate")]
    #[doc(alias = "init_rotate")]
    pub fn new_rotate(angle: f32, axis: &Vec3) -> Self {
        assert_initialized_main_thread!();
        unsafe {
            let mut mat = Self::uninitialized();
            ffi::graphene_matrix_init_rotate(
                mat.to_glib_none_mut().0,
                angle,
                axis.to_glib_none().0,
            );
            mat
        }
    }

    #[doc(alias = "graphene_matrix_init_scale")]
    #[doc(alias = "init_scale")]
    pub fn new_scale(x: f32, y: f32, z: f32) -> Self {
        assert_initialized_main_thread!();
        unsafe {
            let mut mat = Self::uninitialized();
            ffi::graphene_matrix_init_scale(mat.to_glib_none_mut().0, x, y, z);
            mat
        }
    }

    #[doc(alias = "graphene_matrix_init_skew")]
    #[doc(alias = "init_skew")]
    pub fn new_skew(x_skew: f32, y_skew: f32) -> Self {
        assert_initialized_main_thread!();
        unsafe {
            let mut mat = Self::uninitialized();
            ffi::graphene_matrix_init_skew(mat.to_glib_none_mut().0, x_skew, y_skew);
            mat
        }
    }

    #[doc(alias = "graphene_matrix_init_translate")]
    #[doc(alias = "init_translate")]
    pub fn new_translate(p: &Point3D) -> Self {
        assert_initialized_main_thread!();
        unsafe {
            let mut mat = Self::uninitialized();
            ffi::graphene_matrix_init_translate(mat.to_glib_none_mut().0, p.to_glib_none().0);
            mat
        }
    }

    #[doc(alias = "graphene_matrix_to_float")]
    pub fn to_float(&self) -> [f32; 16] {
        unsafe {
            let mut out = std::mem::MaybeUninit::uninit();
            ffi::graphene_matrix_to_float(self.to_glib_none().0, out.as_mut_ptr());
            out.assume_init()
        }
    }

    #[inline]
    pub fn values(&self) -> &[[f32; 4]; 4] {
        unsafe { &*(&self.inner.value as *const ffi::graphene_simd4x4f_t as *const [[f32; 4]; 4]) }
    }
}

impl fmt::Debug for Matrix {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        f.debug_struct("Matrix")
            .field("values", &self.values())
            .finish()
    }
}

impl Default for Matrix {
    fn default() -> Self {
        Self::new_identity()
    }
}

#[cfg(test)]
mod tests {
    use super::Matrix;
    #[test]
    fn test_matrix_values() {
        let matrix = Matrix::new_identity();
        assert_eq!(
            matrix.values(),
            &[
                [1.0, 0.0, 0.0, 0.0],
                [0.0, 1.0, 0.0, 0.0],
                [0.0, 0.0, 1.0, 0.0],
                [0.0, 0.0, 0.0, 1.0]
            ],
        );
    }
}