1/* graphene-triangle.h: A triangle
2 *
3 * SPDX-License-Identifier: MIT
4 *
5 * Copyright 2014 Emmanuele Bassi
6 *
7 * Permission is hereby granted, free of charge, to any person obtaining a copy
8 * of this software and associated documentation files (the "Software"), to deal
9 * in the Software without restriction, including without limitation the rights
10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
11 * copies of the Software, and to permit persons to whom the Software is
12 * furnished to do so, subject to the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be included in
15 * all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
23 * THE SOFTWARE.
24 */
25
26#pragma once
27
28#if !defined(GRAPHENE_H_INSIDE) && !defined(GRAPHENE_COMPILATION)
29#error "Only graphene.h can be included directly."
30#endif
31
32#include "graphene-types.h"
33#include "graphene-vec3.h"
34
35GRAPHENE_BEGIN_DECLS
36
37/**
38 * graphene_triangle_t:
39 *
40 * A triangle.
41 *
42 * Since: 1.2
43 */
44struct _graphene_triangle_t
45{
46 /*< private >*/
47 GRAPHENE_PRIVATE_FIELD (graphene_vec3_t, a);
48 GRAPHENE_PRIVATE_FIELD (graphene_vec3_t, b);
49 GRAPHENE_PRIVATE_FIELD (graphene_vec3_t, c);
50};
51
52GRAPHENE_AVAILABLE_IN_1_2
53graphene_triangle_t * graphene_triangle_alloc (void);
54GRAPHENE_AVAILABLE_IN_1_2
55void graphene_triangle_free (graphene_triangle_t *t);
56
57GRAPHENE_AVAILABLE_IN_1_2
58graphene_triangle_t * graphene_triangle_init_from_point3d (graphene_triangle_t *t,
59 const graphene_point3d_t *a,
60 const graphene_point3d_t *b,
61 const graphene_point3d_t *c);
62GRAPHENE_AVAILABLE_IN_1_2
63graphene_triangle_t * graphene_triangle_init_from_vec3 (graphene_triangle_t *t,
64 const graphene_vec3_t *a,
65 const graphene_vec3_t *b,
66 const graphene_vec3_t *c);
67GRAPHENE_AVAILABLE_IN_1_10
68graphene_triangle_t * graphene_triangle_init_from_float (graphene_triangle_t *t,
69 const float *a,
70 const float *b,
71 const float *c);
72GRAPHENE_AVAILABLE_IN_1_2
73void graphene_triangle_get_points (const graphene_triangle_t *t,
74 graphene_point3d_t *a,
75 graphene_point3d_t *b,
76 graphene_point3d_t *c);
77GRAPHENE_AVAILABLE_IN_1_2
78void graphene_triangle_get_vertices (const graphene_triangle_t *t,
79 graphene_vec3_t *a,
80 graphene_vec3_t *b,
81 graphene_vec3_t *c);
82GRAPHENE_AVAILABLE_IN_1_2
83float graphene_triangle_get_area (const graphene_triangle_t *t);
84GRAPHENE_AVAILABLE_IN_1_2
85void graphene_triangle_get_midpoint (const graphene_triangle_t *t,
86 graphene_point3d_t *res);
87GRAPHENE_AVAILABLE_IN_1_2
88void graphene_triangle_get_normal (const graphene_triangle_t *t,
89 graphene_vec3_t *res);
90GRAPHENE_AVAILABLE_IN_1_2
91void graphene_triangle_get_plane (const graphene_triangle_t *t,
92 graphene_plane_t *res);
93GRAPHENE_AVAILABLE_IN_1_2
94void graphene_triangle_get_bounding_box (const graphene_triangle_t *t,
95 graphene_box_t *res);
96GRAPHENE_AVAILABLE_IN_1_2
97bool graphene_triangle_get_barycoords (const graphene_triangle_t *t,
98 const graphene_point3d_t *p,
99 graphene_vec2_t *res);
100GRAPHENE_AVAILABLE_IN_1_10
101bool graphene_triangle_get_uv (const graphene_triangle_t *t,
102 const graphene_point3d_t *p,
103 const graphene_vec2_t *uv_a,
104 const graphene_vec2_t *uv_b,
105 const graphene_vec2_t *uv_c,
106 graphene_vec2_t *res);
107
108GRAPHENE_AVAILABLE_IN_1_2
109bool graphene_triangle_contains_point (const graphene_triangle_t *t,
110 const graphene_point3d_t *p);
111GRAPHENE_AVAILABLE_IN_1_2
112bool graphene_triangle_equal (const graphene_triangle_t *a,
113 const graphene_triangle_t *b);
114
115GRAPHENE_END_DECLS
116

source code of gtk/subprojects/graphene/include/graphene-triangle.h