//
// frep 3D function
//
// 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 3D function'
//
// initialization
//
var init = function() {
   mod.fn.value = 'Math.sin(10*Math.sqrt(X*X+Y*Y))-10*Z'
   mod.xmin.value = '-1'
   mod.ymin.value = '-1'
   mod.zmin.value = '-1'
   mod.xmax.value = '1'
   mod.ymax.value = '1'
   mod.zmax.value = '1'
   }
//
// 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 func = mod.fn.value
         var xmin = parseFloat(mod.xmin.value)
         var xmax = parseFloat(mod.xmax.value)
         var ymin = parseFloat(mod.ymin.value)
         var ymax = parseFloat(mod.ymax.value)
         var zmin = parseFloat(mod.zmin.value)
         var zmax = parseFloat(mod.zmax.value)
         var xfn = `Math.min(X-(${xmin}),(${xmax})-X)`
         var yfn = `Math.min(X-(${xmin}),(${xmax})-X)`
         var fn = `Math.min(${xfn},${yfn})`
         var fn = `Math.min((${func}),${fn})`
         var variables = ['X','Y','Z']
         var limits = [[xmin,xmax],[ymin,ymax],[zmin,zmax]]
         var type = 'Magnitude'
         var shape = {function:fn,variables:variables,limits:limits,type:type}
         mods.output(mod,'shape',shape)}
         },
   variables:{type:'',
      event:function(){
         var fn = parseFloat(mod.fn.value)
         var xmin = parseFloat(mod.xmin.value)
         var xmax = parseFloat(mod.xmax.value)
         var ymin = parseFloat(mod.ymin.value)
         var ymax = parseFloat(mod.ymax.value)
         var zmin = parseFloat(mod.zmin.value)
         var zmax = parseFloat(mod.zmax.value)
         var vars = {fn:fn,xmin:xmin,ymin:ymin,zmin:zmin,xmax:xmax,ymax:ymax,zmax:zmax}
         mods.output(mod,'variables',vars)}
         }}
//
// interface
//
var interface = function(div){
   mod.div = div
   //
   // function
   //
   div.appendChild(document.createTextNode('function: '))
   div.appendChild(document.createElement('br'))
   var text = document.createElement('textarea')
      text.setAttribute('rows',1)
      text.setAttribute('cols',mods.ui.cols)
      div.appendChild(text)
      mod.fn = text
   div.appendChild(document.createElement('br'))
   //
   // xmin
   //
   div.appendChild(document.createTextNode('xmin: '))
   var input = document.createElement('input')
      input.type = 'text'
      input.size = 3
      div.appendChild(input)
      mod.xmin = input
   //
   // xmax
   //
   div.appendChild(document.createTextNode(' xmax: '))
   var input = document.createElement('input')
      input.type = 'text'
      input.size = 3
      div.appendChild(input)
      mod.xmax = input
   div.appendChild(document.createElement('br'))
   //
   // ymin
   //
   div.appendChild(document.createTextNode('ymin: '))
   var input = document.createElement('input')
      input.type = 'text'
      input.size = 3
      div.appendChild(input)
      mod.ymin = input
   //
   // ymax
   //
   div.appendChild(document.createTextNode(' ymax: '))
   var input = document.createElement('input')
      input.type = 'text'
      input.size = 3
      div.appendChild(input)
      mod.ymax = input
   div.appendChild(document.createElement('br'))
   //
   // zmin
   //
   div.appendChild(document.createTextNode('zmin: '))
   var input = document.createElement('input')
      input.type = 'text'
      input.size = 3
      div.appendChild(input)
      mod.zmin = input
   //
   // zmax
   //
   div.appendChild(document.createTextNode(' zmax: '))
   var input = document.createElement('input')
      input.type = 'text'
      input.size = 3
      div.appendChild(input)
      mod.zmax = 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)
   }
//
// local functions
//
;
//
// return values
//
return ({
   mod:mod,
   name:name,
   init:init,
   inputs:inputs,
   outputs:outputs,
   interface:interface
   })
}())