Source: Utils/InterpolateVec2.js

  1. /* 
  2.  * File: InterpolateVec2.js
  3.  * Encapsulates linear interpolation of vec2, calls gl-matrixjs::lerp
  4.  */
  6. /*jslint node: true, vars: true */
  7. /*global gEngine: false, vec2: false, Interpolate: false */
  8. /* find out more about jslint: http://www.jslint.com/help.html */
  9. "use strict";
  11. /**
  12.  * Default Constructor
  13.  * vec2 interpolation support
  14.  * @memberOf InterpolateVec2
  15.  * @param {type} value target for interpolation
  16.  * @param {Integer} cycle how many cycle it should take for a value to change to final
  17.  * @param {Number} rate the rate at which the value should change at each cycle
  18.  * @returns {InterpolateVec2} New Instance of InterpolateVec2
  19.  */
  20. function InterpolateVec2(value, cycle, rate) {
  21.     Interpolate.call(this, value, cycle, rate);
  22. }
  23. gEngine.Core.inheritPrototype(InterpolateVec2, Interpolate);
  25. /**
  26.  * Interpolate values
  27.  * @memberOf InterpolateVec2
  28.  * @returns {void}
  29.  */
  30. InterpolateVec2.prototype._interpolateValue = function () {
  31.     vec2.lerp(this.mCurrentValue, this.mCurrentValue, this.mFinalValue, this.mRate);
  32. };