Create Rect Class - Node.js Data Structure

Node.js examples for Data Structure:Rectangle

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Description

Create Rect Class

Demo Code


function Rect(x, y, width, height)
{
  this.x = x;//ww  w .j  a v a2s. c  o m
  this.y = y;
  
  this.width = width;
  this.height = height;
  
  this.left = x;
  this.top = y;
  this.right = x + width;
  this.bottom = y + height;

  this.setLeft = function(value)
  {
    this.left = value;
    this.x = value;
    this.width = this.right - value;
  }

  this.setTop = function(value)
  {
    this.top = value;
    this.y = value;
    this.height = this.bottom - value;
  }

  this.setRight = function(value)
  {
    this.right = value;
    this.width = value - this.left;
  }

  this.setBottom = function(value)
  {
    this.bottom = value;
    this.height = value - this.top;
  }
  
  this.intersects = function(rect)
  {
    return this.left < rect.right && rect.left < this.right
      && this.top < rect.bottom && rect.top < this.bottom;
  }

  this.intersectsWire = function(wire, ends)
  {
    if (ends) {
      return wire.start.x <= this.right && wire.end.x >= this.left
                && wire.start.y <= this.bottom && wire.end.y >= this.top;
    }

    if (wire.isHorizontal()) {
      return wire.start.x < this.right && wire.end.x > this.left
                && wire.start.y <= this.bottom && wire.end.y >= this.top;
    } else {
      return wire.start.x <= this.right && wire.end.x >= this.left
                && wire.start.y < this.bottom && wire.end.y > this.top;
    }
  }
  
  this.contains = function(pos)
  {
    return pos.x >= this.left && pos.x <= this.right
      && pos.y >= this.top && pos.y <= this.bottom;
  }
}

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