library-ts/browser/geometry/Box2.ts

import { Range } from "./Range";
import { Vector2 } from "./Vector2";

export class Box2
{
  min:Vector2;
  max:Vector2;

  static create( min:Vector2, max:Vector2 ):Box2
  {
    let box = new Box2();
    box.min = min;
    box.max = max;

    return box;
  }

  static polar( value:number ):Box2
  {
    return this.create( new Vector2( -value, -value ), new Vector2( value, value ) );
  }

  

  get size():Vector2
  {
    return this.max.clone().sub( this.min );
  }

  get center():Vector2
  {
    return this.max.clone().add( this.min ).multiply( 0.5 );
  }

  get rangeX():Range
  {
    return new Range( this.min.x, this.max.x );
  }

  get rangeY():Range
  {
    return new Range( this.min.y, this.max.y );
  }

  intersectsBox( box:Box2 )
  {
    return this.rangeX.overlaps( box.rangeX ) && this.rangeY.overlaps( box.rangeY );
  }

  translate( offset:Vector2 )
  {
    this.min.add( offset );
    this.max.add( offset );
  }

  static fromClientRect( clientRect:ClientRect|DOMRect )
  {
    let min = new Vector2( clientRect.left, clientRect.top );
    let max = new Vector2( clientRect.right, clientRect.bottom );
    
    return Box2.create( min, max );
  }


  static toDomRect( box:Box2 )
  {
    let size = box.size;
    let domRect = new DOMRect( box.min.x, box.min.y, size.x, size.y );
    return domRect;
  }

  static updatefromClientRect( box:Box2, clientRect:ClientRect|DOMRect )
  {
    box.min.set( clientRect.left, clientRect.top );
    box.max.set( clientRect.right, clientRect.bottom );
  }
}