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use i_bound::IBound;
use i_shape::{IShape, ShapeType};
use i_vicinity::IVicinity;
use bound::AxisAlignedBBox;
use mat::Mat3x1;
#[derive(Debug, Clone)]
pub struct RecBox {
pub _ori: Mat3x1<f64>,
pub _size: f64,
pub _bound: AxisAlignedBBox,
pub _vicinity: f64,
}
impl RecBox {
pub fn init(origin: &[f64], size: f64) -> RecBox {
assert!(origin.len() == 3);
RecBox {
_ori: Mat3x1 {
_val: [origin[0], origin[1], origin[2]],
},
_size: size,
_bound: AxisAlignedBBox::init(ShapeType::Box, &[&origin[0..3], &[size]].concat()),
_vicinity: 0.000001f64,
}
}
}
impl IShape for RecBox {
fn get_shape_data(&self) -> Vec<f64> {
vec![self._ori[0], self._ori[1], self._ori[2], self._size]
}
fn get_type(&self) -> ShapeType {
ShapeType::Box
}
fn get_bound(&self) -> &dyn IBound {
&self._bound
}
fn get_intersect(&self, other: &dyn IShape) -> (bool, Option<Mat3x1<f64>>) {
if !self.get_bound().intersect(other.get_bound()) {
return (false, None);
} else {
match other.get_type() {
ShapeType::Point => {
let other_shape_data = other.get_shape_data();
let b_off = Mat3x1 {
_val: [
other_shape_data[0],
other_shape_data[1],
other_shape_data[2],
],
};
return (true, Some(b_off));
}
_ => {
unimplemented!();
}
}
}
}
fn get_support(&self, v: &Mat3x1<f64>) -> Option<Mat3x1<f64>> {
if v.magnitude() != Some(0f64) {
let points = [
Mat3x1 {
_val: [self._size, self._size, self._size],
},
Mat3x1 {
_val: [-self._size, self._size, self._size],
},
Mat3x1 {
_val: [self._size, -self._size, self._size],
},
Mat3x1 {
_val: [-self._size, -self._size, self._size],
},
Mat3x1 {
_val: [self._size, self._size, -self._size],
},
Mat3x1 {
_val: [-self._size, self._size, -self._size],
},
Mat3x1 {
_val: [self._size, -self._size, -self._size],
},
Mat3x1 {
_val: [-self._size, -self._size, -self._size],
},
];
let furthest = points
.iter()
.map(|x| x.dot(v).unwrap())
.enumerate()
.max_by(|a, b| a.1.partial_cmp(&b.1).unwrap())
.unwrap();
let o = self
._ori
.plus(&points[furthest.0])
.expect("support operation unsuccessful.");
Some(o)
} else {
None
}
}
}
impl IVicinity<f64> for RecBox {
fn set_vicinity(&mut self, epsilon: f64) {
self._vicinity = epsilon.abs();
}
fn within_vicinity(&self, a: f64, b: f64) -> bool {
if a + self._vicinity >= b && a - self._vicinity <= b {
true
} else {
false
}
}
}