macroquad 0.2.1

Simple and easy to use graphics library
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
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

//! 2D shapes rendering

use crate::{
    get_context,
    types::{Color, Rect},
};

use glam::vec2;
use quad_gl::{DrawMode, Vertex};

pub fn draw_text(text: &str, x: f32, y: f32, font_size: f32, color: Color) {
    let context = &mut get_context().draw_context;

    let atlas = context.ui.font_atlas.clone();

    let mut total_width = 0.;
    for character in text.chars() {
        if let Some(font_data) = atlas.character_infos.get(&character) {
            let font_data = font_data.scale(font_size);

            total_width += font_data.left_padding;

            let left_coord = total_width;
            let top_coord = atlas.font_size as f32 - font_data.height_over_line;

            total_width += font_data.size.0 + font_data.right_padding;

            let dest = Rect::new(
                left_coord + x,
                top_coord + y - 5.,
                font_data.size.0,
                font_data.size.1,
            );

            let source = Rect::new(
                font_data.tex_coords.0 * context.font_texture.width(),
                font_data.tex_coords.1 * context.font_texture.height(),
                font_data.tex_size.0 * context.font_texture.width(),
                font_data.tex_size.1 * context.font_texture.height(),
            );
            crate::texture::draw_texture_ex(
                context.font_texture,
                dest.x,
                dest.y,
                color,
                crate::texture::DrawTextureParams {
                    dest_size: Some(vec2(dest.w, dest.h)),
                    source: Some(source),
                    ..Default::default()
                },
            );
        }
    }
}

pub fn draw_rectangle(x: f32, y: f32, w: f32, h: f32, color: Color) {
    let context = &mut get_context().draw_context;

    context.draw_rectangle(x, y, w, h, color);
}

pub fn draw_rectangle_lines(x: f32, y: f32, w: f32, h: f32, thickness: f32, color: Color) {
    let t = thickness / 2.;

    draw_rectangle(x, y, w, t, color);
    draw_rectangle(x + w - t, y + t, t, h - t, color);
    draw_rectangle(x, y + h - t, w, t, color);
    draw_rectangle(x, y + t, t, h - t, color);
}

pub fn draw_hexagon(
    x: f32,
    y: f32,
    size: f32,
    border: f32,
    border_color: Color,
    fill_color: Color,
) {
    let context = &mut get_context().draw_context;

    const NUM_DIVISIONS: u32 = 6;

    let mut vertices = Vec::<Vertex>::new();
    let mut indices = Vec::<u16>::new();

    vertices.push(Vertex::new(x, y, 0., 0., 0., fill_color));
    let mut n = 0;
    for i in 0..NUM_DIVISIONS {
        let d = std::f32::consts::PI / 2.;
        // internal vertices
        {
            let r = size - border;
            let rx = (i as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2. - d).cos();
            let ry = (i as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2. - d).sin();
            let vertex = Vertex::new(x + r * rx, y + r * ry, 0., rx, ry, fill_color);
            vertices.push(vertex);

            let rx = ((i + 1) as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2. - d).cos();
            let ry = ((i + 1) as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2. - d).sin();
            let vertex = Vertex::new(x + r * rx, y + r * ry, 0., rx, ry, fill_color);
            vertices.push(vertex);

            indices.extend_from_slice(&[0, n + 1, n + 2]);
        }

        // duplicate internal vertices with border_color
        {
            let r = size - border;
            let rx = (i as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2. - d).cos();
            let ry = (i as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2. - d).sin();
            let vertex = Vertex::new(x + r * rx, y + r * ry, 0., rx, ry, border_color);
            vertices.push(vertex);

            let rx = ((i + 1) as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2. - d).cos();
            let ry = ((i + 1) as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2. - d).sin();
            let vertex = Vertex::new(x + r * rx, y + r * ry, 0., rx, ry, border_color);
            vertices.push(vertex);
        }

        // external border
        {
            let r = size;
            let rx = (i as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2. - d).cos();
            let ry = (i as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2. - d).sin();
            let vertex = Vertex::new(x + r * rx, y + r * ry, 0., rx, ry, border_color);
            vertices.push(vertex);

            let rx = ((i + 1) as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2. - d).cos();
            let ry = ((i + 1) as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2. - d).sin();
            let vertex = Vertex::new(x + r * rx, y + r * ry, 0., rx, ry, border_color);
            vertices.push(vertex);
        }

        indices.extend_from_slice(&[n + 5, n + 3, n + 4]);
        indices.extend_from_slice(&[n + 5, n + 4, n + 6]);

        n += 6;
    }

    context.gl.texture(None);
    context.gl.draw_mode(DrawMode::Triangles);
    context.gl.geometry(&vertices, &indices);
}

pub fn draw_circle(x: f32, y: f32, r: f32, color: Color) {
    let context = &mut get_context().draw_context;

    const NUM_DIVISIONS: u32 = 200;

    let mut vertices = Vec::<Vertex>::new();
    let mut indices = Vec::<u16>::new();

    vertices.push(Vertex::new(x, y, 0., 0., 0., color));
    for i in 0..NUM_DIVISIONS + 1 {
        let rx = (i as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2.).cos();
        let ry = (i as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2.).sin();

        let vertex = Vertex::new(x + r * rx, y + r * ry, 0., rx, ry, color);

        vertices.push(vertex);

        if i != NUM_DIVISIONS {
            indices.extend_from_slice(&[0, i as u16 + 1, i as u16 + 2]);
        }
    }

    context.gl.texture(None);
    context.gl.draw_mode(DrawMode::Triangles);
    context.gl.geometry(&vertices, &indices);
}

pub fn draw_circle_lines(x: f32, y: f32, r: f32, thickness: f32, color: Color) {
    const NUM_DIVISIONS: u32 = 200;

    for i in 0..NUM_DIVISIONS {
        let rx = (i as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2.).cos();
        let ry = (i as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2.).sin();

        let p0 = vec2(x + r * rx, y + r * ry);

        let rx = ((i + 1) as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2.).cos();
        let ry = ((i + 1) as f32 / NUM_DIVISIONS as f32 * std::f32::consts::PI * 2.).sin();

        let p1 = vec2(x + r * rx, y + r * ry);

        draw_line(p0.x(), p0.y(), p1.x(), p1.y(), thickness, color);
    }
}

pub fn draw_line(x1: f32, y1: f32, x2: f32, y2: f32, thickness: f32, color: Color) {
    let context = &mut get_context().draw_context;
    context.draw_line(x1, y1, x2, y2, thickness, color);
}