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use scene::RectangleMaskParams;
use tiny_skia::{Path, PathBuilder, Transform};
use crate::geometry::{box_like_geometry, rotate_point, stroke_offset};
const STAR_INNER_RADIUS_RATIO: f64 = 0.45;
const STAR_VERTEX_COUNT: usize = 10;
fn polygon_path(points: &[(f64, f64)]) -> Option<Path> {
let mut builder = PathBuilder::new();
let first = points.first()?;
builder.move_to(first.0 as f32, first.1 as f32);
for point in &points[1..] {
builder.line_to(point.0 as f32, point.1 as f32);
}
builder.close();
builder.finish()
}
fn rotated_rect_path(
center_x: f64,
center_y: f64,
half_width: f64,
half_height: f64,
rotation_rad: f64,
) -> Option<Path> {
let corners = [
(center_x - half_width, center_y - half_height),
(center_x + half_width, center_y - half_height),
(center_x + half_width, center_y + half_height),
(center_x - half_width, center_y + half_height),
];
let rotated: Vec<(f64, f64)> = corners
.iter()
.map(|&(x, y)| rotate_point(x, y, center_x, center_y, rotation_rad))
.collect();
polygon_path(&rotated)
}
fn rotated_ellipse_path(
center_x: f64,
center_y: f64,
radius_x: f64,
radius_y: f64,
rotation_rad: f64,
) -> Option<Path> {
let rect = tiny_skia::Rect::from_ltrb(
-radius_x as f32,
-radius_y as f32,
radius_x as f32,
radius_y as f32,
)?;
let path = PathBuilder::from_oval(rect)?;
let cos = rotation_rad.cos() as f32;
let sin = rotation_rad.sin() as f32;
path.transform(Transform::from_row(
cos,
sin,
-sin,
cos,
center_x as f32,
center_y as f32,
))
}
fn heart_path(
center_x: f64,
center_y: f64,
half_width: f64,
half_height: f64,
rotation_rad: f64,
) -> Option<Path> {
let to_point = |local_x: f64, local_y: f64| {
rotate_point(
center_x + local_x,
center_y + local_y,
center_x,
center_y,
rotation_rad,
)
};
let start = to_point(0.0, -half_height * 0.475);
let right_control1 = to_point(half_width, -half_height * 1.225);
let right_control2 = to_point(half_width, -half_height * 0.125);
let bottom = to_point(0.0, half_height * 0.725);
let left_control1 = to_point(-half_width, -half_height * 0.125);
let left_control2 = to_point(-half_width, -half_height * 1.225);
let mut builder = PathBuilder::new();
builder.move_to(start.0 as f32, start.1 as f32);
builder.cubic_to(
right_control1.0 as f32,
right_control1.1 as f32,
right_control2.0 as f32,
right_control2.1 as f32,
bottom.0 as f32,
bottom.1 as f32,
);
builder.cubic_to(
left_control1.0 as f32,
left_control1.1 as f32,
left_control2.0 as f32,
left_control2.1 as f32,
start.0 as f32,
start.1 as f32,
);
builder.close();
builder.finish()
}
fn diamond_path(
center_x: f64,
center_y: f64,
half_width: f64,
half_height: f64,
rotation_rad: f64,
) -> Option<Path> {
let points = [
(center_x, center_y - half_height),
(center_x + half_width, center_y),
(center_x, center_y + half_height),
(center_x - half_width, center_y),
];
let rotated: Vec<(f64, f64)> = points
.iter()
.map(|&(x, y)| rotate_point(x, y, center_x, center_y, rotation_rad))
.collect();
polygon_path(&rotated)
}
fn star_path(
center_x: f64,
center_y: f64,
half_width: f64,
half_height: f64,
rotation_rad: f64,
) -> Option<Path> {
let mut points = Vec::with_capacity(STAR_VERTEX_COUNT);
for index in 0..STAR_VERTEX_COUNT {
let is_outer = index % 2 == 0;
let ratio = if is_outer { 1.0 } else { STAR_INNER_RADIUS_RATIO };
let angle = (index as f64 * std::f64::consts::PI) / 5.0 - std::f64::consts::FRAC_PI_2;
let x = center_x + half_width * ratio * angle.cos();
let y = center_y + half_height * ratio * angle.sin();
points.push(rotate_point(x, y, center_x, center_y, rotation_rad));
}
polygon_path(&points)
}
fn box_like_body_path(
params: &RectangleMaskParams,
width: f64,
height: f64,
build: fn(f64, f64, f64, f64, f64) -> Option<Path>,
) -> Option<Path> {
let geometry = box_like_geometry(params, width, height);
build(
geometry.center_x,
geometry.center_y,
geometry.mask_width / 2.0,
geometry.mask_height / 2.0,
geometry.rotation_rad,
)
}
fn box_like_stroke_path(
params: &RectangleMaskParams,
width: f64,
height: f64,
build: fn(f64, f64, f64, f64, f64) -> Option<Path>,
) -> Option<Path> {
let geometry = box_like_geometry(params, width, height);
let offset = stroke_offset(params.stroke_align, params.stroke_width);
build(
geometry.center_x,
geometry.center_y,
(geometry.mask_width / 2.0 + offset).max(1.0),
(geometry.mask_height / 2.0 + offset).max(1.0),
geometry.rotation_rad,
)
}
pub fn rectangle_body_path(params: &RectangleMaskParams, width: f64, height: f64) -> Option<Path> {
box_like_body_path(params, width, height, rotated_rect_path)
}
pub fn rectangle_stroke_path(params: &RectangleMaskParams, width: f64, height: f64) -> Option<Path> {
box_like_stroke_path(params, width, height, rotated_rect_path)
}
pub fn ellipse_body_path(params: &RectangleMaskParams, width: f64, height: f64) -> Option<Path> {
box_like_body_path(params, width, height, rotated_ellipse_path)
}
pub fn ellipse_stroke_path(params: &RectangleMaskParams, width: f64, height: f64) -> Option<Path> {
box_like_stroke_path(params, width, height, rotated_ellipse_path)
}
pub fn heart_body_path(params: &RectangleMaskParams, width: f64, height: f64) -> Option<Path> {
box_like_body_path(params, width, height, heart_path)
}
pub fn heart_stroke_path(params: &RectangleMaskParams, width: f64, height: f64) -> Option<Path> {
box_like_stroke_path(params, width, height, heart_path)
}
pub fn diamond_body_path(params: &RectangleMaskParams, width: f64, height: f64) -> Option<Path> {
box_like_body_path(params, width, height, diamond_path)
}
pub fn diamond_stroke_path(params: &RectangleMaskParams, width: f64, height: f64) -> Option<Path> {
box_like_stroke_path(params, width, height, diamond_path)
}
pub fn star_body_path(params: &RectangleMaskParams, width: f64, height: f64) -> Option<Path> {
box_like_body_path(params, width, height, star_path)
}
pub fn star_stroke_path(params: &RectangleMaskParams, width: f64, height: f64) -> Option<Path> {
box_like_stroke_path(params, width, height, star_path)
}
fn cinematic_bars_dimensions(params: &RectangleMaskParams, width: f64, height: f64) -> (f64, f64) {
(
(params.width * width).max(width),
params.height.max(0.01) * height,
)
}
pub fn cinematic_bars_body_path(
params: &RectangleMaskParams,
width: f64,
height: f64,
) -> Option<Path> {
let (mask_width, mask_height) = cinematic_bars_dimensions(params, width, height);
rotated_rect_path(
width / 2.0 + params.center_x * width,
height / 2.0 + params.center_y * height,
mask_width / 2.0,
mask_height / 2.0,
params.rotation.to_radians(),
)
}
pub fn cinematic_bars_stroke_path(
params: &RectangleMaskParams,
width: f64,
height: f64,
) -> Option<Path> {
let (mask_width, mask_height) = cinematic_bars_dimensions(params, width, height);
let offset = stroke_offset(params.stroke_align, params.stroke_width);
rotated_rect_path(
width / 2.0 + params.center_x * width,
height / 2.0 + params.center_y * height,
(mask_width / 2.0 + offset).max(1.0),
(mask_height / 2.0 + offset).max(1.0),
params.rotation.to_radians(),
)
}
|
