コード例 #1
0
        public double Sample(double x)
        {
            if (CubicBezier.AlmostEq(x, 0.0))
            {
                return(this._y0);
            }
            if (CubicBezier.AlmostEq(x, 1.0))
            {
                return(this._y3);
            }
            double num = this._y3 - this._y0;

            return(CubicBezier.AlmostEq(this._x1 * num, this._y1 - this._y0) && CubicBezier.AlmostEq((1.0 - this._x2) * num, this._y3 - this._y2) ? this._y0 + x * num : CubicBezier.CalcBezierY(this.GetTForX(x), this._y0, this._y1, this._y2, this._y3));
        }
コード例 #2
0
        private double GetTForX(double aX)
        {
            double aA     = 0.0;
            int    index1 = 1;

            for (int index2 = 10; index1 != index2 && this._sampleValues[index1] <= aX; ++index1)
            {
                aA += 0.1;
            }
            int    index3 = index1 - 1;
            double num1   = (aX - this._sampleValues[index3]) / (this._sampleValues[index3 + 1] - this._sampleValues[index3]);
            double num2   = aA + num1 * 0.1;
            double slopeX = CubicBezier.GetSlopeX(num2, this._x1, this._x2);

            return(slopeX < 0.001 ? (!CubicBezier.AlmostEq(slopeX, 0.0) ? CubicBezier.BinarySubdivide(aX, aA, aA + 0.1, this._x1, this._x2) : num2) : this.NewtonRaphsonIterate(aX, num2, this._x1, this._x2));
        }