//
// frep torus
//
// Neil Gershenfeld
// (c) Massachusetts Institute of Technology 2018
//
// This work may be reproduced, modified, distributed, performed, and
// displayed for any purpose, but must acknowledge the mods
// project. Copyright is retained and must be preserved. The work is
// provided as is; no warranty is provided, and users accept all
// liability.
//
// closure
//
(function(){
//
// module globals
//
var mod = {}
//
// name
//
var name = 'frep torus'
//
// initialization
//
var init = function() {
   mod.x.value = '0'
   mod.y.value = '0'
   mod.z.value = '0'
   mod.rminor.value = '1'
   mod.rmajor.value = '2'
   }
//
// inputs
//
var inputs = {
   variables:{type:'',
      event:function(evt){
         for (var p in evt.detail)
            mod[p].value = evt.detail[p]
         outputs.variables.event()
         outputs.shape.event()
         }}}
//
// outputs
//
var outputs = {
   shape:{type:'',
      event:function(){
         var x = parseFloat(mod.x.value)
         var y = parseFloat(mod.y.value)
         var z = parseFloat(mod.z.value)
         var rminor = parseFloat(mod.rminor.value)
         var rmajor = parseFloat(mod.rmajor.value)
         var fn = `(${rminor}*${rminor}-(Math.pow(${rmajor}-Math.sqrt((X-(${x}))*(X-(${x}))+(Y-(${y}))*(Y-(${y}))),2)+(Z-(${z}))*(Z-(${z}))))`
         var variables = ['X','Y','Z']
         var limits = [[x-(rminor+rmajor),x+rminor+rmajor],[y-(rminor+rmajor),y+rminor+rmajor],[z-rminor,z+rminor]]
         var type = 'Magnitude'
         var shape = {function:fn,variables:variables,limits:limits,type:type}
         mods.output(mod,'shape',shape)}
         },
   variables:{type:'',
      event:function(){
         var x = parseFloat(mod.x.value)
         var y = parseFloat(mod.y.value)
         var z = parseFloat(mod.z.value)
         var rminor = parseFloat(mod.rminor.value)
         var rmajor = parseFloat(mod.rmajor.value)
         var vars = {x:x,y:y,z:z,rminor:rminor,rmajor:rmajor}
         mods.output(mod,'variables',vars)}
         }}
//
// interface
//
var interface = function(div){
   mod.div = div
   //
   // x
   //
   div.appendChild(document.createTextNode('x: '))
   var input = document.createElement('input')
      input.type = 'text'
      input.size = 3
      div.appendChild(input)
      mod.x = input
   //
   // y
   //
   div.appendChild(document.createTextNode(' y: '))
   var input = document.createElement('input')
      input.type = 'text'
      input.size = 3
      div.appendChild(input)
      mod.y = input
   div.appendChild(document.createElement('br'))
   //
   // z
   //
   div.appendChild(document.createTextNode('z: '))
   var input = document.createElement('input')
      input.type = 'text'
      input.size = 3
      div.appendChild(input)
      mod.z = input
   div.appendChild(document.createElement('br'))
   //
   // minor radius
   //
   div.appendChild(document.createTextNode('minor radius: '))
   var input = document.createElement('input')
      input.type = 'text'
      input.size = 3
      div.appendChild(input)
      mod.rminor = input
   div.appendChild(document.createElement('br'))
   //
   // major radius
   //
   div.appendChild(document.createTextNode('major radius: '))
   var input = document.createElement('input')
      input.type = 'text'
      input.size = 3
      div.appendChild(input)
      mod.rmajor = input
   div.appendChild(document.createElement('br'))
   //
   // output button
   //
   var btn = document.createElement('button')
      btn.style.padding = mods.ui.padding
      btn.style.margin = 1
      btn.appendChild(document.createTextNode('output'))
      btn.addEventListener('click',function(){
         outputs.variables.event()
         outputs.shape.event()
         })
      div.appendChild(btn)
   div.appendChild(document.createElement('br'))
   }
//
// local functions
//
;
//
// return values
//
return ({
   mod:mod,
   name:name,
   init:init,
   inputs:inputs,
   outputs:outputs,
   interface:interface
   })
}())