コード例 #1
0
        private Vector2 EvaluatePiece(SplinePiece piece, float t, bool isFirstPiece)
        {
            var limits = isFirstPiece ? new Vector2(0, piece.Radian2) : new Vector2(piece.Radian1, 0);
            var tt     = limits.x + t * (limits.y - limits.x);

            return(piece.Center + piece.Axis1 * math.cos(tt) + piece.Axis2 * math.sin(tt));
        }
コード例 #2
0
        public List <Vector2> Evaluate(Curve curve, IInterpolationFunctionProvider interpolationProvider)
        {
            if (curve.Points.Count < 3)
            {
                return(new List <Vector2>());
            }

            var startIndex = curve.EndType == CurveEndType.Hide ? 0 : 1;

            var         evaluatedPoints = new List <Vector2>();
            SplinePiece previousPiece   = null;

            for (var i = 0; i < curve.Points.Count - 2; ++i)
            {
                var piece        = interpolationProvider.Interpolate(curve.Points[i], curve.Points[i + 1], curve.Points[i + 2]);
                var currentPiece = piece;

                if (previousPiece != null && currentPiece != null)
                {
                    for (var j = 0; j < 128; ++j)
                    {
                        evaluatedPoints.Add(EvaluateSection(previousPiece, currentPiece, j / 127f));
                    }
                }

                previousPiece = piece;
            }

            return(evaluatedPoints);
        }
コード例 #3
0
        private Vector2 EvaluateSection(SplinePiece piece1, SplinePiece piece2, float t)
        {
            var p1 = EvaluatePiece(piece1, t, isFirstPiece: true);
            var p2 = EvaluatePiece(piece2, t, isFirstPiece: false);

            var weight = math.pow(math.sin(math.PI * 0.5f * t), 2);

            return(Vector2.Lerp(p1, p2, weight));
        }