import { Vector2 } from './Vector2.js';
const _vector = /*@__PURE__*/ new Vector2();
class Box2 {
constructor( min = new Vector2( + Infinity, + Infinity ), max = new Vector2( - Infinity, - Infinity ) ) {
this.isBox2 = true;
this.min = min;
this.max = max;
}
set( min, max ) {
this.min.copy( min );
this.max.copy( max );
return this;
}
setFromPoints( points ) {
this.makeEmpty();
for ( let i = 0, il = points.length; i < il; i ++ ) {
this.expandByPoint( points[ i ] );
}
return this;
}
setFromCenterAndSize( center, size ) {
const halfSize = _vector.copy( size ).multiplyScalar( 0.5 );
this.min.copy( center ).sub( halfSize );
this.max.copy( center ).add( halfSize );
return this;
}
clone() {
return new this.constructor().copy( this );
}
copy( box ) {
this.min.copy( box.min );
this.max.copy( box.max );
return this;
}
makeEmpty() {
this.min.x = this.min.y = + Infinity;
this.max.x = this.max.y = - Infinity;
return this;
}
isEmpty() {
// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes
return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y );
}
getCenter( target ) {
return this.isEmpty() ? target.set( 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );
}
getSize( target ) {
return this.isEmpty() ? target.set( 0, 0 ) : target.subVectors( this.max, this.min );
}
expandByPoint( point ) {
this.min.min( point );
this.max.max( point );
return this;
}
expandByVector( vector ) {
this.min.sub( vector );
this.max.add( vector );
return this;
}
expandByScalar( scalar ) {
this.min.addScalar( - scalar );
this.max.addScalar( scalar );
return this;
}
containsPoint( point ) {
return point.x < this.min.x || point.x > this.max.x ||
point.y < this.min.y || point.y > this.max.y ? false : true;
}
containsBox( box ) {
return this.min.x <= box.min.x && box.max.x <= this.max.x &&
this.min.y <= box.min.y && box.max.y <= this.max.y;
}
getParameter( point, target ) {
// This can potentially have a divide by zero if the box
// has a size dimension of 0.
return target.set(
( point.x - this.min.x ) / ( this.max.x - this.min.x ),
( point.y - this.min.y ) / ( this.max.y - this.min.y )
);
}
intersectsBox( box ) {
// using 4 splitting planes to rule out intersections
return box.max.x < this.min.x || box.min.x > this.max.x ||
box.max.y < this.min.y || box.min.y > this.max.y ? false : true;
}
clampPoint( point, target ) {
return target.copy( point ).clamp( this.min, this.max );
}
distanceToPoint( point ) {
return this.clampPoint( point, _vector ).distanceTo( point );
}
intersect( box ) {
this.min.max( box.min );
this.max.min( box.max );
if ( this.isEmpty() ) this.makeEmpty();
return this;
}
union( box ) {
this.min.min( box.min );
this.max.max( box.max );
return this;
}
translate( offset ) {
this.min.add( offset );
this.max.add( offset );
return this;
}
equals( box ) {
return box.min.equals( this.min ) && box.max.equals( this.max );
}
}
export { Box2 };
