livecodingspace-app/support/client/lib/vwf/view/aframeComponent.js

"use strict";

// VWF & A-Frame view driver
// Copyright 2017 Krestianstvo.org project
// 
// Copyright 2012 United States Government, as represented by the Secretary of Defense, Under
// Secretary of Defense (Personnel & Readiness).
// 
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
// in compliance with the License. You may obtain a copy of the License at
// 
//   http://www.apache.org/licenses/LICENSE-2.0
// 
// Unless required by applicable law or agreed to in writing, software distributed under the License
// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
// or implied. See the License for the specific language governing permissions and limitations under
// the License.

/// vwf/view/lesson creates a view interface for instruction text. 
/// 
/// @module vwf/view/aframe
/// @requires vwf/view

define(["module", "vwf/view"], function (module, view) {
    var self;

    return view.load(module, {

        // == Module Definition ====================================================================

        initialize: function (options) {
            self = this;
            this.nodes = {};

            this.tickTime = 0;
            this.realTickDif = 50;
            this.lastrealTickDif = 50;
            this.lastRealTick = performance.now();

            this.state.appInitialized = false;
            
                        if (typeof options == "object") {
            
                            this.rootSelector = options["application-root"];
                        }
                        else {
                            this.rootSelector = options;
                        }
         
        },

        // initializedNode: function( nodeID, childID ) {
        // },

        createdNode: function (nodeID, childID, childExtendsID, childImplementsIDs,
            childSource, childType, childIndex, childName, callback /* ( ready ) */) {

            var node = this.state.nodes[childID];

            // If the "nodes" object does not have this object in it, it must not be one that
            // this driver cares about
            if (!node) {
                return;
            }


            if(this.state.nodes[childID]) {
                this.nodes[childID] = {id:childID,extends:childExtendsID};
            } 
            else if (this.state.nodes[childID] && this.state.nodes[childID].aframeObj) {
                this.nodes[childID] = {
                    id:childID,
                    extends:childExtendsID
                };
            }
          
        },

        initializedNode: function( nodeID, childID ) {
            
                        var node = this.state.nodes[childID];

                        if (!node) {
                            return;
                        }
                    },

        createdProperty: function (nodeId, propertyName, propertyValue) {
            return this.satProperty(nodeId, propertyName, propertyValue);
        },

        initializedProperty: function (nodeId, propertyName, propertyValue) {
            return this.satProperty(nodeId, propertyName, propertyValue);
        },



        satProperty: function (nodeId, propertyName, propertyValue) {
           
            var node = this.state.nodes[ nodeId ];
            
                        if ( !( node && node.aframeObj ) ) {
                            return;
                        }

                        
            switch (propertyName) {
                case "color":
                    if (propertyValue) {
                       // self.kernel.callMethod (nodeId, 'initLang');
                      // console.log("sat color "+ propertyValue)
                    }
                    break;
            }
            

        },

        // firedEvent: function (nodeID, eventName, eventParameters) {
        // },


        ticked: function (vwfTime) {

            lerpTick ();

        }

    });

    function lerpTick () {
        var now = performance.now();
        self.realTickDif = now - self.lastRealTick;

        self.lastRealTick = now;
 
        //reset - loading can cause us to get behind and always but up against the max prediction value
       // self.tickTime = 0;

       let interNodes = Object.entries(self.nodes).filter(node => 
        node[1].extends == 'http://vwf.example.com/aframe/interpolation-component.vwf');

       interNodes.forEach(node => {
           let nodeID = node[0];
        if ( self.state.nodes[nodeID] ) {      
            self.nodes[nodeID].tickTime = 0;
            if(!self.nodes[nodeID].interpolate)
            {
                self.nodes[nodeID].interpolate = {
                    'position': {},
                    'rotation': {}
                }
            }
            self.nodes[nodeID].interpolate.position.lastTick = (self.nodes[nodeID].interpolate.position.selfTick);
            self.nodes[nodeID].interpolate.position.selfTick = getPosition(nodeID);

            self.nodes[nodeID].interpolate.rotation.lastTick = (self.nodes[nodeID].interpolate.rotation.selfTick);
            self.nodes[nodeID].interpolate.rotation.selfTick = getRotation(nodeID);
            //console.log(self.nodes[nodeID].interpolate.rotation.selfTick);
            //self.nodes[nodeID].lastTickTransform = self.nodes[nodeID].selfTickTransform;
            //self.nodes[nodeID].selfTickTransform = getTransform(nodeID);
        }
       })

        // for ( var nodeID in interNodes ) {
        //     if ( self.state.nodes[nodeID] ) {      
        //         self.nodes[nodeID].tickTime = 0;
        //         self.nodes[nodeID].lastTickTransform = self.nodes[nodeID].selfTickTransform;
        //         self.nodes[nodeID].selfTickTransform = getTransform(nodeID);
        //     }
        // }


    }

    function getRotation(id) {
        let r = new THREE.Euler();
        let rot = r.copy(self.state.nodes[id].aframeObj.el.object3D.rotation);
        //let rot = self.state.nodes[id].aframeObj.el.getAttribute('rotation');
        //let interp = (new THREE.Vector3()).fromArray(Object.values(rot))//goog.vec.Mat4.clone(self.state.nodes[id].threeObject.matrix.elements);
        
        return rot;
    }

    function getPosition(id) {
        let p = new THREE.Vector3();
        let pos = p.copy(self.state.nodes[id].aframeObj.el.object3D.position);
        //let pos = self.state.nodes[id].aframeObj.el.getAttribute('position');
        //let interp = (new THREE.Vector3()).fromArray(Object.values(pos))//goog.vec.Mat4.clone(self.state.nodes[id].threeObject.matrix.elements);
        
        return pos;
    }

});