#![cfg_attr(windows, allow(dead_code))]
use schemars::JsonSchema;
use serde::{Deserialize, Serialize};
use crate::{
AtlasTextureId, AtlasTile, Background, Bounds, ContentMask, Corners, Edges, Hsla, Pixels,
Point, Radians, ScaledPixels, Size, bounds_tree::BoundsTree, point,
};
use std::{
fmt::Debug,
iter::Peekable,
ops::{Add, Range, Sub},
slice,
};
#[allow(non_camel_case_types, unused)]
pub(crate) type PathVertex_ScaledPixels = PathVertex<ScaledPixels>;
pub(crate) type DrawOrder = u32;
#[derive(Default)]
pub(crate) struct Scene {
pub(crate) paint_operations: Vec<PaintOperation>,
primitive_bounds: BoundsTree<ScaledPixels>,
layer_stack: Vec<DrawOrder>,
pub(crate) shadows: Vec<Shadow>,
pub(crate) shadow_transforms: Vec<TransformationMatrix>,
pub(crate) quads: Vec<Quad>,
pub(crate) quad_transforms: Vec<TransformationMatrix>,
pub(crate) backdrop_blurs: Vec<BackdropBlur>,
pub(crate) backdrop_blur_transforms: Vec<TransformationMatrix>,
pub(crate) paths: Vec<Path<ScaledPixels>>,
pub(crate) underlines: Vec<Underline>,
pub(crate) underline_transforms: Vec<TransformationMatrix>,
pub(crate) monochrome_sprites: Vec<MonochromeSprite>,
pub(crate) polychrome_sprites: Vec<PolychromeSprite>,
pub(crate) polychrome_sprite_transforms: Vec<TransformationMatrix>,
pub(crate) surfaces: Vec<PaintSurface>,
}
impl Scene {
pub fn clear(&mut self) {
self.paint_operations.clear();
self.primitive_bounds.clear();
self.layer_stack.clear();
self.paths.clear();
self.shadows.clear();
self.shadow_transforms.clear();
self.quads.clear();
self.quad_transforms.clear();
self.backdrop_blurs.clear();
self.backdrop_blur_transforms.clear();
self.underlines.clear();
self.underline_transforms.clear();
self.monochrome_sprites.clear();
self.polychrome_sprites.clear();
self.polychrome_sprite_transforms.clear();
self.surfaces.clear();
}
pub fn len(&self) -> usize {
self.paint_operations.len()
}
pub fn push_layer(&mut self, bounds: Bounds<ScaledPixels>) {
let order = self.primitive_bounds.insert(bounds);
self.layer_stack.push(order);
self.paint_operations
.push(PaintOperation::StartLayer(bounds));
}
pub fn pop_layer(&mut self) {
self.layer_stack.pop();
self.paint_operations.push(PaintOperation::EndLayer);
}
pub fn insert_primitive(&mut self, primitive: impl Into<Primitive>) {
let mut primitive = primitive.into();
let transformed_bounds = transformed_bounds(&primitive);
let clipped_bounds = transformed_bounds.intersect(&primitive.content_mask().bounds);
if clipped_bounds.is_empty() {
return;
}
let order = self
.layer_stack
.last()
.copied()
.unwrap_or_else(|| self.primitive_bounds.insert(clipped_bounds));
match &mut primitive {
Primitive::Shadow(shadow, transform) => {
shadow.order = order;
self.shadows.push(shadow.clone());
self.shadow_transforms.push(*transform);
}
Primitive::Quad(quad, transform) => {
quad.order = order;
self.quads.push(quad.clone());
self.quad_transforms.push(*transform);
}
Primitive::BackdropBlur(blur, transform) => {
blur.order = order;
self.backdrop_blurs.push(blur.clone());
self.backdrop_blur_transforms.push(*transform);
}
Primitive::Path(path) => {
path.order = order;
path.id = PathId(self.paths.len());
self.paths.push(path.clone());
}
Primitive::Underline(underline, transform) => {
underline.order = order;
self.underlines.push(underline.clone());
self.underline_transforms.push(*transform);
}
Primitive::MonochromeSprite(sprite) => {
sprite.order = order;
self.monochrome_sprites.push(sprite.clone());
}
Primitive::PolychromeSprite(sprite, transform) => {
sprite.order = order;
self.polychrome_sprites.push(sprite.clone());
self.polychrome_sprite_transforms.push(*transform);
}
Primitive::Surface(surface) => {
surface.order = order;
self.surfaces.push(surface.clone());
}
}
fn transformed_bounds(primitive: &Primitive) -> Bounds<ScaledPixels> {
fn apply_transform(
bounds: &Bounds<ScaledPixels>,
transform: &TransformationMatrix,
) -> Bounds<ScaledPixels> {
if transform.is_unit() {
return *bounds;
}
let [[a, b], [c, d]] = transform.rotation_scale;
let tx = transform.translation[0];
let ty = transform.translation[1];
let x0 = bounds.origin.x.0;
let x1 = x0 + bounds.size.width.0;
let y0 = bounds.origin.y.0;
let y1 = y0 + bounds.size.height.0;
let ax0 = a * x0;
let ax1 = a * x1;
let by0 = b * y0;
let by1 = b * y1;
let cx0 = c * x0;
let cx1 = c * x1;
let dy0 = d * y0;
let dy1 = d * y1;
let min_x = tx + ax0.min(ax1) + by0.min(by1);
let max_x = tx + ax0.max(ax1) + by0.max(by1);
let min_y = ty + cx0.min(cx1) + dy0.min(dy1);
let max_y = ty + cx0.max(cx1) + dy0.max(dy1);
Bounds {
origin: point(ScaledPixels(min_x), ScaledPixels(min_y)),
size: Size {
width: ScaledPixels((max_x - min_x).max(0.0)),
height: ScaledPixels((max_y - min_y).max(0.0)),
},
}
}
match primitive {
Primitive::Shadow(shadow, transform) => apply_transform(&shadow.bounds, transform),
Primitive::Quad(quad, transform) => apply_transform(&quad.bounds, transform),
Primitive::BackdropBlur(blur, transform) => apply_transform(&blur.bounds, transform),
Primitive::Underline(underline, transform) => {
apply_transform(&underline.bounds, transform)
}
Primitive::MonochromeSprite(sprite) => {
apply_transform(&sprite.bounds, &sprite.transformation)
}
Primitive::PolychromeSprite(sprite, transform) => {
apply_transform(&sprite.bounds, transform)
}
Primitive::Path(path) => path.bounds,
Primitive::Surface(surface) => surface.bounds,
}
}
self.paint_operations
.push(PaintOperation::Primitive(primitive));
}
pub fn replay(&mut self, range: Range<usize>, prev_scene: &Scene) {
for operation in &prev_scene.paint_operations[range] {
match operation {
PaintOperation::Primitive(primitive) => self.insert_primitive(primitive.clone()),
PaintOperation::StartLayer(bounds) => self.push_layer(*bounds),
PaintOperation::EndLayer => self.pop_layer(),
}
}
}
fn sort_with_aux_by_key<T, U, K: Ord>(
items: &mut Vec<T>,
aux: &mut Vec<U>,
mut key_fn: impl FnMut(&T) -> K,
) {
debug_assert_eq!(items.len(), aux.len());
if items.len() <= 1 {
return;
}
let mut perm: Vec<usize> = (0..items.len()).collect();
perm.sort_by_key(|&index| key_fn(&items[index]));
let mut desired_pos_by_current_pos = vec![0usize; perm.len()];
for (desired_pos, current_pos) in perm.into_iter().enumerate() {
desired_pos_by_current_pos[current_pos] = desired_pos;
}
for i in 0..items.len() {
while desired_pos_by_current_pos[i] != i {
let j = desired_pos_by_current_pos[i];
items.swap(i, j);
aux.swap(i, j);
desired_pos_by_current_pos.swap(i, j);
}
}
}
pub fn finish(&mut self) {
Self::sort_with_aux_by_key(&mut self.shadows, &mut self.shadow_transforms, |shadow| {
shadow.order
});
Self::sort_with_aux_by_key(&mut self.quads, &mut self.quad_transforms, |quad| {
quad.order
});
Self::sort_with_aux_by_key(
&mut self.backdrop_blurs,
&mut self.backdrop_blur_transforms,
|blur| blur.order,
);
self.paths.sort_by_key(|path| path.order);
Self::sort_with_aux_by_key(
&mut self.underlines,
&mut self.underline_transforms,
|underline| underline.order,
);
self.monochrome_sprites
.sort_by_key(|sprite| (sprite.order, sprite.tile.tile_id));
Self::sort_with_aux_by_key(
&mut self.polychrome_sprites,
&mut self.polychrome_sprite_transforms,
|sprite| (sprite.order, sprite.tile.tile_id),
);
self.surfaces.sort_by_key(|surface| surface.order);
}
#[cfg_attr(
all(
any(target_os = "linux", target_os = "freebsd"),
not(any(feature = "x11", feature = "wayland"))
),
allow(dead_code)
)]
pub(crate) fn batches(&self) -> impl Iterator<Item = PrimitiveBatch<'_>> {
BatchIterator {
shadows: &self.shadows,
shadow_transforms: &self.shadow_transforms,
shadows_start: 0,
shadows_iter: self.shadows.iter().peekable(),
quads: &self.quads,
quad_transforms: &self.quad_transforms,
quads_start: 0,
quads_iter: self.quads.iter().peekable(),
backdrop_blurs: &self.backdrop_blurs,
backdrop_blur_transforms: &self.backdrop_blur_transforms,
backdrop_blurs_start: 0,
backdrop_blurs_iter: self.backdrop_blurs.iter().peekable(),
paths: &self.paths,
paths_start: 0,
paths_iter: self.paths.iter().peekable(),
underlines: &self.underlines,
underline_transforms: &self.underline_transforms,
underlines_start: 0,
underlines_iter: self.underlines.iter().peekable(),
monochrome_sprites: &self.monochrome_sprites,
monochrome_sprites_start: 0,
monochrome_sprites_iter: self.monochrome_sprites.iter().peekable(),
polychrome_sprites: &self.polychrome_sprites,
polychrome_sprite_transforms: &self.polychrome_sprite_transforms,
polychrome_sprites_start: 0,
polychrome_sprites_iter: self.polychrome_sprites.iter().peekable(),
surfaces: &self.surfaces,
surfaces_start: 0,
surfaces_iter: self.surfaces.iter().peekable(),
}
}
}
#[derive(Clone, Copy, Debug, Eq, PartialEq, Ord, PartialOrd, Default)]
#[cfg_attr(
all(
any(target_os = "linux", target_os = "freebsd"),
not(any(feature = "x11", feature = "wayland"))
),
allow(dead_code)
)]
pub(crate) enum PrimitiveKind {
Shadow,
#[default]
Quad,
BackdropBlur,
Path,
Underline,
MonochromeSprite,
PolychromeSprite,
Surface,
}
pub(crate) enum PaintOperation {
Primitive(Primitive),
StartLayer(Bounds<ScaledPixels>),
EndLayer,
}
#[derive(Clone)]
pub(crate) enum Primitive {
Shadow(Shadow, TransformationMatrix),
Quad(Quad, TransformationMatrix),
BackdropBlur(BackdropBlur, TransformationMatrix),
Path(Path<ScaledPixels>),
Underline(Underline, TransformationMatrix),
MonochromeSprite(MonochromeSprite),
PolychromeSprite(PolychromeSprite, TransformationMatrix),
Surface(PaintSurface),
}
impl Primitive {
#[allow(dead_code)]
pub fn bounds(&self) -> &Bounds<ScaledPixels> {
match self {
Primitive::Shadow(shadow, _) => &shadow.bounds,
Primitive::Quad(quad, _) => &quad.bounds,
Primitive::BackdropBlur(blur, _) => &blur.bounds,
Primitive::Path(path) => &path.bounds,
Primitive::Underline(underline, _) => &underline.bounds,
Primitive::MonochromeSprite(sprite) => &sprite.bounds,
Primitive::PolychromeSprite(sprite, _) => &sprite.bounds,
Primitive::Surface(surface) => &surface.bounds,
}
}
pub fn content_mask(&self) -> &ContentMask<ScaledPixels> {
match self {
Primitive::Shadow(shadow, _) => &shadow.content_mask,
Primitive::Quad(quad, _) => &quad.content_mask,
Primitive::BackdropBlur(blur, _) => &blur.content_mask,
Primitive::Path(path) => &path.content_mask,
Primitive::Underline(underline, _) => &underline.content_mask,
Primitive::MonochromeSprite(sprite) => &sprite.content_mask,
Primitive::PolychromeSprite(sprite, _) => &sprite.content_mask,
Primitive::Surface(surface) => &surface.content_mask,
}
}
}
#[cfg_attr(
all(
any(target_os = "linux", target_os = "freebsd"),
not(any(feature = "x11", feature = "wayland"))
),
allow(dead_code)
)]
struct BatchIterator<'a> {
shadows: &'a [Shadow],
shadow_transforms: &'a [TransformationMatrix],
shadows_start: usize,
shadows_iter: Peekable<slice::Iter<'a, Shadow>>,
quads: &'a [Quad],
quad_transforms: &'a [TransformationMatrix],
quads_start: usize,
quads_iter: Peekable<slice::Iter<'a, Quad>>,
backdrop_blurs: &'a [BackdropBlur],
backdrop_blur_transforms: &'a [TransformationMatrix],
backdrop_blurs_start: usize,
backdrop_blurs_iter: Peekable<slice::Iter<'a, BackdropBlur>>,
paths: &'a [Path<ScaledPixels>],
paths_start: usize,
paths_iter: Peekable<slice::Iter<'a, Path<ScaledPixels>>>,
underlines: &'a [Underline],
underline_transforms: &'a [TransformationMatrix],
underlines_start: usize,
underlines_iter: Peekable<slice::Iter<'a, Underline>>,
monochrome_sprites: &'a [MonochromeSprite],
monochrome_sprites_start: usize,
monochrome_sprites_iter: Peekable<slice::Iter<'a, MonochromeSprite>>,
polychrome_sprites: &'a [PolychromeSprite],
polychrome_sprite_transforms: &'a [TransformationMatrix],
polychrome_sprites_start: usize,
polychrome_sprites_iter: Peekable<slice::Iter<'a, PolychromeSprite>>,
surfaces: &'a [PaintSurface],
surfaces_start: usize,
surfaces_iter: Peekable<slice::Iter<'a, PaintSurface>>,
}
impl<'a> Iterator for BatchIterator<'a> {
type Item = PrimitiveBatch<'a>;
fn next(&mut self) -> Option<Self::Item> {
let mut orders_and_kinds = [
(
self.shadows_iter.peek().map(|s| s.order),
PrimitiveKind::Shadow,
),
(self.quads_iter.peek().map(|q| q.order), PrimitiveKind::Quad),
(
self.backdrop_blurs_iter.peek().map(|b| b.order),
PrimitiveKind::BackdropBlur,
),
(self.paths_iter.peek().map(|q| q.order), PrimitiveKind::Path),
(
self.underlines_iter.peek().map(|u| u.order),
PrimitiveKind::Underline,
),
(
self.monochrome_sprites_iter.peek().map(|s| s.order),
PrimitiveKind::MonochromeSprite,
),
(
self.polychrome_sprites_iter.peek().map(|s| s.order),
PrimitiveKind::PolychromeSprite,
),
(
self.surfaces_iter.peek().map(|s| s.order),
PrimitiveKind::Surface,
),
];
orders_and_kinds.sort_by_key(|(order, kind)| (order.unwrap_or(u32::MAX), *kind));
let first = orders_and_kinds[0];
let second = orders_and_kinds[1];
let (batch_kind, max_order_and_kind) = if first.0.is_some() {
(first.1, (second.0.unwrap_or(u32::MAX), second.1))
} else {
return None;
};
match batch_kind {
PrimitiveKind::Shadow => {
let shadows_start = self.shadows_start;
let mut shadows_end = shadows_start + 1;
self.shadows_iter.next();
while self
.shadows_iter
.next_if(|shadow| (shadow.order, batch_kind) < max_order_and_kind)
.is_some()
{
shadows_end += 1;
}
self.shadows_start = shadows_end;
Some(PrimitiveBatch::Shadows(
&self.shadows[shadows_start..shadows_end],
&self.shadow_transforms[shadows_start..shadows_end],
))
}
PrimitiveKind::Quad => {
let quads_start = self.quads_start;
let mut quads_end = quads_start + 1;
self.quads_iter.next();
while self
.quads_iter
.next_if(|quad| (quad.order, batch_kind) < max_order_and_kind)
.is_some()
{
quads_end += 1;
}
self.quads_start = quads_end;
Some(PrimitiveBatch::Quads(
&self.quads[quads_start..quads_end],
&self.quad_transforms[quads_start..quads_end],
))
}
PrimitiveKind::BackdropBlur => {
let blurs_start = self.backdrop_blurs_start;
let mut blurs_end = blurs_start + 1;
self.backdrop_blurs_iter.next();
while self
.backdrop_blurs_iter
.next_if(|blur| (blur.order, batch_kind) < max_order_and_kind)
.is_some()
{
blurs_end += 1;
}
self.backdrop_blurs_start = blurs_end;
Some(PrimitiveBatch::BackdropBlurs(
&self.backdrop_blurs[blurs_start..blurs_end],
&self.backdrop_blur_transforms[blurs_start..blurs_end],
))
}
PrimitiveKind::Path => {
let paths_start = self.paths_start;
let mut paths_end = paths_start + 1;
self.paths_iter.next();
while self
.paths_iter
.next_if(|path| (path.order, batch_kind) < max_order_and_kind)
.is_some()
{
paths_end += 1;
}
self.paths_start = paths_end;
Some(PrimitiveBatch::Paths(&self.paths[paths_start..paths_end]))
}
PrimitiveKind::Underline => {
let underlines_start = self.underlines_start;
let mut underlines_end = underlines_start + 1;
self.underlines_iter.next();
while self
.underlines_iter
.next_if(|underline| (underline.order, batch_kind) < max_order_and_kind)
.is_some()
{
underlines_end += 1;
}
self.underlines_start = underlines_end;
Some(PrimitiveBatch::Underlines(
&self.underlines[underlines_start..underlines_end],
&self.underline_transforms[underlines_start..underlines_end],
))
}
PrimitiveKind::MonochromeSprite => {
let texture_id = self.monochrome_sprites_iter.peek().unwrap().tile.texture_id;
let sprites_start = self.monochrome_sprites_start;
let mut sprites_end = sprites_start + 1;
self.monochrome_sprites_iter.next();
while self
.monochrome_sprites_iter
.next_if(|sprite| {
(sprite.order, batch_kind) < max_order_and_kind
&& sprite.tile.texture_id == texture_id
})
.is_some()
{
sprites_end += 1;
}
self.monochrome_sprites_start = sprites_end;
Some(PrimitiveBatch::MonochromeSprites {
texture_id,
sprites: &self.monochrome_sprites[sprites_start..sprites_end],
})
}
PrimitiveKind::PolychromeSprite => {
let texture_id = self.polychrome_sprites_iter.peek().unwrap().tile.texture_id;
let sprites_start = self.polychrome_sprites_start;
let mut sprites_end = self.polychrome_sprites_start + 1;
self.polychrome_sprites_iter.next();
while self
.polychrome_sprites_iter
.next_if(|sprite| {
(sprite.order, batch_kind) < max_order_and_kind
&& sprite.tile.texture_id == texture_id
})
.is_some()
{
sprites_end += 1;
}
self.polychrome_sprites_start = sprites_end;
Some(PrimitiveBatch::PolychromeSprites {
texture_id,
sprites: &self.polychrome_sprites[sprites_start..sprites_end],
transforms: &self.polychrome_sprite_transforms[sprites_start..sprites_end],
})
}
PrimitiveKind::Surface => {
let surfaces_start = self.surfaces_start;
let mut surfaces_end = surfaces_start + 1;
self.surfaces_iter.next();
while self
.surfaces_iter
.next_if(|surface| (surface.order, batch_kind) < max_order_and_kind)
.is_some()
{
surfaces_end += 1;
}
self.surfaces_start = surfaces_end;
Some(PrimitiveBatch::Surfaces(
&self.surfaces[surfaces_start..surfaces_end],
))
}
}
}
}
#[derive(Debug)]
#[cfg_attr(
all(
any(target_os = "linux", target_os = "freebsd"),
not(any(feature = "x11", feature = "wayland"))
),
allow(dead_code)
)]
pub(crate) enum PrimitiveBatch<'a> {
Shadows(&'a [Shadow], &'a [TransformationMatrix]),
Quads(&'a [Quad], &'a [TransformationMatrix]),
BackdropBlurs(&'a [BackdropBlur], &'a [TransformationMatrix]),
Paths(&'a [Path<ScaledPixels>]),
Underlines(&'a [Underline], &'a [TransformationMatrix]),
MonochromeSprites {
texture_id: AtlasTextureId,
sprites: &'a [MonochromeSprite],
},
PolychromeSprites {
texture_id: AtlasTextureId,
sprites: &'a [PolychromeSprite],
transforms: &'a [TransformationMatrix],
},
Surfaces(&'a [PaintSurface]),
}
#[derive(Default, Debug, Clone)]
#[repr(C)]
pub(crate) struct Quad {
pub order: DrawOrder,
pub border_style: BorderStyle,
pub bounds: Bounds<ScaledPixels>,
pub content_mask: ContentMask<ScaledPixels>,
pub background: Background,
pub border_color: Hsla,
pub corner_radii: Corners<ScaledPixels>,
pub border_widths: Edges<ScaledPixels>,
}
impl From<(Quad, TransformationMatrix)> for Primitive {
fn from((quad, transform): (Quad, TransformationMatrix)) -> Self {
Primitive::Quad(quad, transform)
}
}
#[derive(Debug, Clone)]
#[repr(C)]
pub(crate) struct BackdropBlur {
pub order: DrawOrder,
pub blur_radius: ScaledPixels,
pub bounds: Bounds<ScaledPixels>,
pub corner_radii: Corners<ScaledPixels>,
pub content_mask: ContentMask<ScaledPixels>,
pub tint: Hsla,
}
impl From<(BackdropBlur, TransformationMatrix)> for Primitive {
fn from((blur, transform): (BackdropBlur, TransformationMatrix)) -> Self {
Primitive::BackdropBlur(blur, transform)
}
}
#[derive(Debug, Clone)]
#[repr(C)]
pub(crate) struct Underline {
pub order: DrawOrder,
pub pad: u32, pub bounds: Bounds<ScaledPixels>,
pub content_mask: ContentMask<ScaledPixels>,
pub color: Hsla,
pub thickness: ScaledPixels,
pub wavy: u32,
}
impl From<(Underline, TransformationMatrix)> for Primitive {
fn from((underline, transform): (Underline, TransformationMatrix)) -> Self {
Primitive::Underline(underline, transform)
}
}
#[derive(Debug, Clone)]
#[repr(C)]
pub(crate) struct Shadow {
pub order: DrawOrder,
pub blur_radius: ScaledPixels,
pub bounds: Bounds<ScaledPixels>,
pub corner_radii: Corners<ScaledPixels>,
pub content_mask: ContentMask<ScaledPixels>,
pub color: Hsla,
}
impl From<(Shadow, TransformationMatrix)> for Primitive {
fn from((shadow, transform): (Shadow, TransformationMatrix)) -> Self {
Primitive::Shadow(shadow, transform)
}
}
#[derive(Default, Debug, Clone, Copy, PartialEq, Eq, Hash, Serialize, Deserialize, JsonSchema)]
#[repr(C)]
pub enum BorderStyle {
#[default]
Solid = 0,
Dashed = 1,
}
#[derive(Debug, Clone, Copy, PartialEq)]
#[repr(C)]
pub struct TransformationMatrix {
pub rotation_scale: [[f32; 2]; 2],
pub translation: [f32; 2],
}
impl Eq for TransformationMatrix {}
impl TransformationMatrix {
pub fn unit() -> Self {
Self {
rotation_scale: [[1.0, 0.0], [0.0, 1.0]],
translation: [0.0, 0.0],
}
}
pub fn translate(mut self, point: Point<Pixels>) -> Self {
self.compose(Self {
rotation_scale: [[1.0, 0.0], [0.0, 1.0]],
translation: [point.x.0, point.y.0],
})
}
pub fn rotate(self, angle: Radians) -> Self {
self.compose(Self {
rotation_scale: [
[angle.0.cos(), -angle.0.sin()],
[angle.0.sin(), angle.0.cos()],
],
translation: [0.0, 0.0],
})
}
pub fn scale(self, size: Size<f32>) -> Self {
self.compose(Self {
rotation_scale: [[size.width, 0.0], [0.0, size.height]],
translation: [0.0, 0.0],
})
}
#[inline]
pub fn compose(self, other: TransformationMatrix) -> TransformationMatrix {
if other == Self::unit() {
return self;
}
TransformationMatrix {
rotation_scale: [
[
self.rotation_scale[0][0] * other.rotation_scale[0][0]
+ self.rotation_scale[0][1] * other.rotation_scale[1][0],
self.rotation_scale[0][0] * other.rotation_scale[0][1]
+ self.rotation_scale[0][1] * other.rotation_scale[1][1],
],
[
self.rotation_scale[1][0] * other.rotation_scale[0][0]
+ self.rotation_scale[1][1] * other.rotation_scale[1][0],
self.rotation_scale[1][0] * other.rotation_scale[0][1]
+ self.rotation_scale[1][1] * other.rotation_scale[1][1],
],
],
translation: [
self.translation[0]
+ self.rotation_scale[0][0] * other.translation[0]
+ self.rotation_scale[0][1] * other.translation[1],
self.translation[1]
+ self.rotation_scale[1][0] * other.translation[0]
+ self.rotation_scale[1][1] * other.translation[1],
],
}
}
pub fn is_unit(&self) -> bool {
*self == Self::unit()
}
pub fn is_translation_only(&self) -> bool {
self.rotation_scale == [[1.0, 0.0], [0.0, 1.0]]
}
pub fn apply_inverse(&self, point: Point<Pixels>) -> Option<Point<Pixels>> {
let det = self.rotation_scale[0][0] * self.rotation_scale[1][1]
- self.rotation_scale[0][1] * self.rotation_scale[1][0];
if det == 0.0 {
return None;
}
let inv = [
[
self.rotation_scale[1][1] / det,
-self.rotation_scale[0][1] / det,
],
[
-self.rotation_scale[1][0] / det,
self.rotation_scale[0][0] / det,
],
];
let translated = [
point.x.0 - self.translation[0],
point.y.0 - self.translation[1],
];
let local = [
inv[0][0] * translated[0] + inv[0][1] * translated[1],
inv[1][0] * translated[0] + inv[1][1] * translated[1],
];
Some(Point::new(local[0].into(), local[1].into()))
}
pub fn apply(&self, point: Point<Pixels>) -> Point<Pixels> {
let input = [point.x.0, point.y.0];
let mut output = self.translation;
for (i, output_cell) in output.iter_mut().enumerate() {
for (k, input_cell) in input.iter().enumerate() {
*output_cell += self.rotation_scale[i][k] * *input_cell;
}
}
Point::new(output[0].into(), output[1].into())
}
}
impl Default for TransformationMatrix {
fn default() -> Self {
Self::unit()
}
}
#[derive(Clone, Debug)]
#[repr(C)]
pub(crate) struct MonochromeSprite {
pub order: DrawOrder,
pub pad: u32, pub bounds: Bounds<ScaledPixels>,
pub content_mask: ContentMask<ScaledPixels>,
pub color: Hsla,
pub tile: AtlasTile,
pub transformation: TransformationMatrix,
}
impl From<MonochromeSprite> for Primitive {
fn from(sprite: MonochromeSprite) -> Self {
Primitive::MonochromeSprite(sprite)
}
}
#[derive(Clone, Debug)]
#[repr(C)]
pub(crate) struct PolychromeSprite {
pub order: DrawOrder,
pub pad: u32, pub grayscale: bool,
pub opacity: f32,
pub bounds: Bounds<ScaledPixels>,
pub content_mask: ContentMask<ScaledPixels>,
pub corner_radii: Corners<ScaledPixels>,
pub tile: AtlasTile,
}
impl From<(PolychromeSprite, TransformationMatrix)> for Primitive {
fn from((sprite, transform): (PolychromeSprite, TransformationMatrix)) -> Self {
Primitive::PolychromeSprite(sprite, transform)
}
}
#[derive(Clone, Debug)]
pub(crate) struct PaintSurface {
pub order: DrawOrder,
pub bounds: Bounds<ScaledPixels>,
pub content_mask: ContentMask<ScaledPixels>,
#[cfg(target_os = "macos")]
pub image_buffer: core_video::pixel_buffer::CVPixelBuffer,
}
impl From<PaintSurface> for Primitive {
fn from(surface: PaintSurface) -> Self {
Primitive::Surface(surface)
}
}
#[derive(Copy, Clone, Debug, PartialEq, Eq, Hash)]
pub(crate) struct PathId(pub(crate) usize);
#[derive(Clone, Debug)]
pub struct Path<P: Clone + Debug + Default + PartialEq> {
pub(crate) id: PathId,
pub(crate) order: DrawOrder,
pub(crate) bounds: Bounds<P>,
pub(crate) content_mask: ContentMask<P>,
pub(crate) vertices: Vec<PathVertex<P>>,
pub(crate) color: Background,
start: Point<P>,
current: Point<P>,
contour_count: usize,
}
impl Path<Pixels> {
pub fn new(start: Point<Pixels>) -> Self {
Self {
id: PathId(0),
order: DrawOrder::default(),
vertices: Vec::new(),
start,
current: start,
bounds: Bounds {
origin: start,
size: Default::default(),
},
content_mask: Default::default(),
color: Default::default(),
contour_count: 0,
}
}
pub fn scale(&self, factor: f32) -> Path<ScaledPixels> {
Path {
id: self.id,
order: self.order,
bounds: self.bounds.scale(factor),
content_mask: self.content_mask.scale(factor),
vertices: self
.vertices
.iter()
.map(|vertex| vertex.scale(factor))
.collect(),
start: self.start.map(|start| start.scale(factor)),
current: self.current.scale(factor),
contour_count: self.contour_count,
color: self.color,
}
}
pub fn move_to(&mut self, to: Point<Pixels>) {
self.contour_count += 1;
self.start = to;
self.current = to;
}
pub fn line_to(&mut self, to: Point<Pixels>) {
self.contour_count += 1;
if self.contour_count > 1 {
self.push_triangle(
(self.start, self.current, to),
(point(0., 1.), point(0., 1.), point(0., 1.)),
);
}
self.current = to;
}
pub fn curve_to(&mut self, to: Point<Pixels>, ctrl: Point<Pixels>) {
self.contour_count += 1;
if self.contour_count > 1 {
self.push_triangle(
(self.start, self.current, to),
(point(0., 1.), point(0., 1.), point(0., 1.)),
);
}
self.push_triangle(
(self.current, ctrl, to),
(point(0., 0.), point(0.5, 0.), point(1., 1.)),
);
self.current = to;
}
pub fn push_triangle(
&mut self,
xy: (Point<Pixels>, Point<Pixels>, Point<Pixels>),
st: (Point<f32>, Point<f32>, Point<f32>),
) {
self.bounds = self
.bounds
.union(&Bounds {
origin: xy.0,
size: Default::default(),
})
.union(&Bounds {
origin: xy.1,
size: Default::default(),
})
.union(&Bounds {
origin: xy.2,
size: Default::default(),
});
self.vertices.push(PathVertex {
xy_position: xy.0,
st_position: st.0,
content_mask: Default::default(),
});
self.vertices.push(PathVertex {
xy_position: xy.1,
st_position: st.1,
content_mask: Default::default(),
});
self.vertices.push(PathVertex {
xy_position: xy.2,
st_position: st.2,
content_mask: Default::default(),
});
}
}
impl<T> Path<T>
where
T: Clone + Debug + Default + PartialEq + PartialOrd + Add<T, Output = T> + Sub<Output = T>,
{
#[allow(unused)]
pub(crate) fn clipped_bounds(&self) -> Bounds<T> {
self.bounds.intersect(&self.content_mask.bounds)
}
}
impl From<Path<ScaledPixels>> for Primitive {
fn from(path: Path<ScaledPixels>) -> Self {
Primitive::Path(path)
}
}
#[derive(Clone, Debug)]
#[repr(C)]
pub(crate) struct PathVertex<P: Clone + Debug + Default + PartialEq> {
pub(crate) xy_position: Point<P>,
pub(crate) st_position: Point<f32>,
pub(crate) content_mask: ContentMask<P>,
}
impl PathVertex<Pixels> {
pub fn scale(&self, factor: f32) -> PathVertex<ScaledPixels> {
PathVertex {
xy_position: self.xy_position.scale(factor),
st_position: self.st_position,
content_mask: self.content_mask.scale(factor),
}
}
}