# 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.

## Cesium base 3d object component
## 
## @name cesium.vwf
## @namespace

--- 
extends: http://vwf.example.com/node.vwf
implements:
- http://vwf.example.com/animation.vwf
properties:
  visible: true
  position: [ 0, 0, 0 ]
  color: [ 255, 255, 255, 1 ]
  modelMatrix:
methods:
  translateBy:
  translateTo:
scripts:
  - |
    this.translationFromValue = function( value ) {
      return value && value.length >= 3 ? value : goog.vec.Vec3.create();
    }  
    this.translateBy = function( translation, duration ) {
      var pos = this.position; 
      var startPosition = goog.vec.Vec3.createFloat32FromArray( pos );
      var deltaPosition = goog.vec.Vec3.createFloat32FromArray( translation );
      var stopPosition = goog.vec.Vec3.add(
        startPosition,
        deltaPosition,
        goog.vec.Vec3.create()
      );
      if( duration > 0 ) {
        this.animationDuration = duration;
        this.animationUpdate = function( time, duration ) {
          this.position = goog.vec.Vec3.lerp(
            startPosition, stopPosition,
            time >= duration ? 1 : time / duration,
            goog.vec.Vec3.create()
          );
        }
        this.animationPlay();
      }
      else {
        this.position = stopPosition;
      } 
    } 
    this.translateTo = function( translation, duration ) {
      var pos = this.position; 
      var startPosition = goog.vec.Vec3.createFloat32FromArray( pos );
      var stopPosition = goog.vec.Vec3.createFloat32FromArray( translation );
      var deltaPosition = goog.vec.Vec3.subtract(
        startPosition,
        stopPosition,
        goog.vec.Vec3.create()
      );
      if( duration > 0 ) {
        this.animationDuration = duration;
        this.animationUpdate = function( time, duration ) {
          this.position = goog.vec.Vec3.lerp(
            startPosition, stopPosition,
            time >= duration ? 1 : time / duration,
            goog.vec.Vec3.create()
          );
        }
        this.animationPlay();
      }
      else {
        this.position = stopPosition;
      } 
    } //@ sourceURL=cesium.node3.vwf