nannou 0.19.0

A Creative Coding Framework for Rust.
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

use crate::color::conv::IntoLinSrgba;
use crate::draw::primitive::polygon::{self, PolygonInit, PolygonOptions, SetPolygon};
use crate::draw::primitive::Primitive;
use crate::draw::properties::spatial::{dimension, orientation, position};
use crate::draw::properties::{
    ColorScalar, LinSrgba, SetColor, SetDimensions, SetOrientation, SetPosition, SetStroke,
};
use crate::draw::{self, Drawing};
use crate::geom;
use crate::glam::Vec2;
use lyon::tessellation::StrokeOptions;

/// Properties related to drawing a **Rect**.
#[derive(Clone, Debug)]
pub struct Rect {
    dimensions: dimension::Properties,
    polygon: PolygonInit,
}

/// The drawing context for a Rect.
pub type DrawingRect<'a> = Drawing<'a, Rect>;

// Trait implementations.

impl Rect {
    /// Stroke the outline with the given color.
    pub fn stroke<C>(self, color: C) -> Self
    where
        C: IntoLinSrgba<ColorScalar>,
    {
        self.stroke_color(color)
    }
}

impl<'a> DrawingRect<'a> {
    /// Stroke the outline with the given color.
    pub fn stroke<C>(self, color: C) -> Self
    where
        C: IntoLinSrgba<ColorScalar>,
    {
        self.map_ty(|ty| ty.stroke(color))
    }
}

impl draw::renderer::RenderPrimitive for Rect {
    fn render_primitive(
        self,
        ctxt: draw::renderer::RenderContext,
        mesh: &mut draw::Mesh,
    ) -> draw::renderer::PrimitiveRender {
        let Rect {
            polygon,
            dimensions,
        } = self;

        // If dimensions were specified, scale the points to those dimensions.
        let (maybe_x, maybe_y, maybe_z) = (dimensions.x, dimensions.y, dimensions.z);
        assert!(
            maybe_z.is_none(),
            "z dimension support for rect is unimplemented"
        );
        let w = maybe_x.unwrap_or(100.0);
        let h = maybe_y.unwrap_or(100.0);
        let rect = geom::Rect::from_wh([w, h].into());
        let points = rect.corners().vertices().map(Vec2::from);
        polygon::render_points_themed(
            polygon.opts,
            points,
            ctxt,
            &draw::theme::Primitive::Rect,
            mesh,
        );

        draw::renderer::PrimitiveRender::default()
    }
}

impl From<geom::Rect<f32>> for Rect {
    fn from(r: geom::Rect<f32>) -> Self {
        let (x, y, w, h) = r.x_y_w_h();
        Self::default().x_y(x, y).w_h(w, h)
    }
}

impl Default for Rect {
    fn default() -> Self {
        let dimensions = <_>::default();
        let polygon = <_>::default();
        Rect {
            dimensions,
            polygon,
        }
    }
}

impl SetOrientation for Rect {
    fn properties(&mut self) -> &mut orientation::Properties {
        SetOrientation::properties(&mut self.polygon)
    }
}

impl SetPosition for Rect {
    fn properties(&mut self) -> &mut position::Properties {
        SetPosition::properties(&mut self.polygon)
    }
}

impl SetDimensions for Rect {
    fn properties(&mut self) -> &mut dimension::Properties {
        SetDimensions::properties(&mut self.dimensions)
    }
}

impl SetColor<ColorScalar> for Rect {
    fn rgba_mut(&mut self) -> &mut Option<LinSrgba> {
        SetColor::rgba_mut(&mut self.polygon)
    }
}

impl SetStroke for Rect {
    fn stroke_options_mut(&mut self) -> &mut StrokeOptions {
        SetStroke::stroke_options_mut(&mut self.polygon)
    }
}

impl SetPolygon for Rect {
    fn polygon_options_mut(&mut self) -> &mut PolygonOptions {
        SetPolygon::polygon_options_mut(&mut self.polygon)
    }
}

// Primitive conversions.

impl From<Rect> for Primitive {
    fn from(prim: Rect) -> Self {
        Primitive::Rect(prim)
    }
}

impl Into<Option<Rect>> for Primitive {
    fn into(self) -> Option<Rect> {
        match self {
            Primitive::Rect(prim) => Some(prim),
            _ => None,
        }
    }
}