2019-08-26 23:38:37 +00:00
|
|
|
use crate::matrix::Matrix;
|
|
|
|
use swf::Twips;
|
|
|
|
|
|
|
|
#[derive(Clone, Debug)]
|
|
|
|
pub struct BoundingBox {
|
|
|
|
pub x_min: Twips,
|
|
|
|
pub y_min: Twips,
|
|
|
|
pub x_max: Twips,
|
|
|
|
pub y_max: Twips,
|
|
|
|
pub valid: bool,
|
|
|
|
}
|
|
|
|
|
|
|
|
impl BoundingBox {
|
|
|
|
pub fn transform(&self, matrix: &Matrix) -> Self {
|
|
|
|
if !self.valid {
|
|
|
|
return Self::default();
|
|
|
|
}
|
|
|
|
|
|
|
|
use std::cmp::{max, min};
|
|
|
|
let pt0 = *matrix * (self.x_min, self.y_min);
|
|
|
|
let pt1 = *matrix * (self.x_min, self.y_max);
|
|
|
|
let pt2 = *matrix * (self.x_max, self.y_min);
|
|
|
|
let pt3 = *matrix * (self.x_max, self.y_max);
|
|
|
|
BoundingBox {
|
|
|
|
x_min: min(pt0.0, min(pt1.0, min(pt2.0, pt3.0))),
|
|
|
|
y_min: min(pt0.1, min(pt1.1, min(pt2.1, pt3.1))),
|
|
|
|
x_max: max(pt0.0, max(pt1.0, max(pt2.0, pt3.0))),
|
|
|
|
y_max: max(pt0.1, max(pt1.1, max(pt2.1, pt3.1))),
|
|
|
|
valid: true,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn intersects(&self, other: &BoundingBox) -> bool {
|
|
|
|
if !self.valid || !other.valid {
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
use std::cmp::{max, min};
|
|
|
|
let x_min = max(self.x_min, other.x_min);
|
|
|
|
let y_min = max(self.y_min, other.y_min);
|
|
|
|
let x_max = min(self.x_max, other.x_max);
|
|
|
|
let y_max = min(self.y_max, other.y_max);
|
|
|
|
|
|
|
|
x_min <= x_max && y_min <= y_max
|
|
|
|
}
|
|
|
|
|
|
|
|
pub fn contains(&self, (x, y): (Twips, Twips)) -> bool {
|
|
|
|
self.valid && x >= self.x_min && x <= self.x_max && y >= self.y_min && y <= self.y_max
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl Default for BoundingBox {
|
|
|
|
fn default() -> Self {
|
|
|
|
Self {
|
|
|
|
x_min: Default::default(),
|
|
|
|
y_min: Default::default(),
|
|
|
|
x_max: Default::default(),
|
|
|
|
y_max: Default::default(),
|
|
|
|
valid: false,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl From<swf::Rectangle> for BoundingBox {
|
|
|
|
fn from(rect: swf::Rectangle) -> Self {
|
|
|
|
Self {
|
|
|
|
x_min: rect.x_min,
|
|
|
|
y_min: rect.y_min,
|
|
|
|
x_max: rect.x_max,
|
|
|
|
y_max: rect.y_max,
|
|
|
|
valid: true,
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|