carnelian/render/generic/forma/
raster.rs

1// Copyright 2020 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use std::cell::RefCell;
6use std::ops::Add;
7use std::rc::Rc;
8
9use euclid::default::{Transform2D, Vector2D};
10use smallvec::{smallvec, SmallVec};
11
12use crate::render::generic::forma::{Forma, FormaPath};
13use crate::render::generic::{Raster, RasterBuilder};
14
15#[derive(Clone, Debug, PartialEq)]
16pub(crate) struct Print {
17    pub(crate) path: forma::Path,
18    pub(crate) transform: Transform2D<f32>,
19}
20
21#[derive(Clone, Debug)]
22pub struct FormaRaster {
23    pub(crate) prints: SmallVec<[Print; 1]>,
24    pub(crate) layer_details: Rc<RefCell<Option<(forma::GeomId, Vector2D<f32>)>>>,
25    pub(crate) translation: Vector2D<f32>,
26}
27
28impl Raster for FormaRaster {
29    fn translate(mut self, translation: Vector2D<i32>) -> Self {
30        self.translation += translation.to_f32();
31        self
32    }
33}
34
35impl Add for FormaRaster {
36    type Output = Self;
37
38    fn add(mut self, other: Self) -> Self::Output {
39        if self.translation != Vector2D::zero() {
40            for print in &mut self.prints {
41                print.transform.m31 += self.translation.x;
42                print.transform.m32 += self.translation.y;
43            }
44
45            self.translation = Vector2D::zero();
46        }
47
48        self.prints.reserve(other.prints.len());
49        for print in &other.prints {
50            let transform = Transform2D::new(
51                print.transform.m11,
52                print.transform.m12,
53                print.transform.m21,
54                print.transform.m22,
55                print.transform.m31 + other.translation.x,
56                print.transform.m32 + other.translation.y,
57            );
58            self.prints.push(Print { path: print.path.clone(), transform });
59        }
60
61        self.layer_details = Rc::new(RefCell::new(None));
62        self
63    }
64}
65
66impl Eq for FormaRaster {}
67
68impl PartialEq for FormaRaster {
69    fn eq(&self, _other: &Self) -> bool {
70        todo!()
71    }
72}
73
74#[derive(Debug)]
75pub struct FormaRasterBuilder {
76    prints: SmallVec<[Print; 1]>,
77}
78
79impl FormaRasterBuilder {
80    pub(crate) fn new() -> Self {
81        Self { prints: smallvec![] }
82    }
83}
84
85impl RasterBuilder<Forma> for FormaRasterBuilder {
86    fn add_with_transform(&mut self, path: &FormaPath, transform: &Transform2D<f32>) -> &mut Self {
87        self.prints.push(Print { path: path.path.clone(), transform: *transform });
88        self
89    }
90
91    fn build(self) -> FormaRaster {
92        FormaRaster {
93            prints: self.prints,
94            layer_details: Rc::new(RefCell::new(None)),
95            translation: Vector2D::zero(),
96        }
97    }
98}
carnelian/render/generic/forma/raster.rs

carnelian/render/generic/forma/
raster.rs
