Esempio n. 1
0
        public static double Dot(Vector v1, Vector v2)
        {
            Debug.Assert(v1.IsRational());
            Debug.Assert(v2.IsRational());

            return v1.X * v2.X + v1.Y * v2.Y;
        }
Esempio n. 2
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        public static bool Animate(
            Point currentValue, Vector currentVelocity, Point targetValue,
            double attractionFator, double dampening,
            double terminalVelocity, double minValueDelta, double minVelocityDelta,
            out Point newValue, out Vector newVelocity)
        {
            Debug.Assert(currentValue.IsRational());
            Debug.Assert(currentVelocity.IsRational());
            Debug.Assert(targetValue.IsRational());

            Debug.Assert(dampening.IsRational());
            Debug.Assert(dampening > 0 && dampening < 1);

            Debug.Assert(attractionFator.IsRational());
            Debug.Assert(attractionFator > 0);

            Debug.Assert(terminalVelocity > 0);

            Debug.Assert(minValueDelta > 0);
            Debug.Assert(minVelocityDelta > 0);

            Vector diff = targetValue - currentValue;

            if (diff.Length > minValueDelta || currentVelocity.Length > minVelocityDelta)
            {
                newVelocity = currentVelocity * (1 - dampening);
                newVelocity += diff * attractionFator;
                newVelocity *= (currentVelocity.Length > terminalVelocity) ? terminalVelocity / currentVelocity.Length : 1;

                newValue = currentValue + newVelocity;

                return true;
            }
            else
            {
                newValue = targetValue;
                newVelocity = new Vector();
                return false;
            }
        }
Esempio n. 3
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        public static bool Animate(
            Point currentValue, Vector currentVelocity, Vector force,
            double dampening, double terminalVelocity, double minValueDelta, double minVelocityDelta,
            out Point newValue, out Vector newVelocity)
        {
            Debug.Assert(currentValue.IsRational());
            Debug.Assert(currentVelocity.IsRational());

            Debug.Assert(dampening.IsRational());
            Debug.Assert(dampening > 0 && dampening < 1);

            Debug.Assert(terminalVelocity > 0);

            Debug.Assert(minValueDelta > 0);
            Debug.Assert(minVelocityDelta > 0);

            if (force.Length > minValueDelta || currentVelocity.Length > minVelocityDelta)
            {
                newVelocity = currentVelocity * (1 - dampening);
                newVelocity += force;
                newVelocity *= (currentVelocity.Length > terminalVelocity) ? terminalVelocity / currentVelocity.Length : 1;

                newValue = currentValue + newVelocity;

                return true;
            }
            else
            {
                newValue = currentValue;
                newVelocity = new Vector();
                return false;
            }
        }
Esempio n. 4
0
        public static double AngleRad(Vector v1, Vector v2)
        {
            Debug.Assert(v1.IsRational());
            Debug.Assert(v2.IsRational());

            double dot = Dot(v1, v2);
            double dotNormalize = dot / (v1.Length * v2.Length);
            double acos = Math.Acos(dotNormalize);

            return acos;
        }