BernsteinPolynomial = function(res) {
            this.resolution = res;
            var b0 = [],
              b1 = [],
              b2 = [],
              b3 = [];
            var t = 0;
            var dt = 1.0 / (res - 1);
            for (var i = 0; i < res; i++) {
              var t1 = 1 - t;
              var t12 = t1 * t1;
              var t2 = t * t;
              b0[i] = t1 * t12;
              b1[i] = 3 * t * t12;
              b2[i] = 3 * t2 * t1;
              b3[i] = t * t2;
              t += dt;
            }
            this.b0 = b0;
            this.b1 = b1;
            this.b2 = b2;
            this.b3 = b3;
          }
@class
Helper class for the spline3d classes in this package. Used to compute
subdivision points of the curve.
@member toxi
@param {Number} res number of subdivision steps between each control point of the spline3d