Exemplo n.º 1
0
        private void TestToStringWithCulture(CultureInfo culture)
        {
            CultureInfo originalCulture = Thread.CurrentThread.CurrentCulture;
            Thread.CurrentThread.CurrentCulture = culture;
            try
            {
                string listSeparator = culture.TextInfo.ListSeparator;
                string decimalSeparator = culture.NumberFormat.NumberDecimalSeparator;
                var o = new Ray2F(new Vec2F(1.1f, 2.2f), new Vec2F(3.3f, 4.4f));

                string s = o.ToString(null, null);
                TestToStringResults(o, s, listSeparator, decimalSeparator);

                string s2 = o.ToString();
                Assert.AreEqual(s, s2);

                s = o.ToString("G", culture);
                TestToStringResults(o, s, listSeparator, decimalSeparator);

                s = o.ToString("R", culture);
                TestToStringResults(o, s, listSeparator, decimalSeparator);
            }
            finally
            {
                Thread.CurrentThread.CurrentCulture = originalCulture;
            }
        }
Exemplo n.º 2
0
        /// <summary>
        /// Gets the first intersection of a ray with a box (closest intersection to the
        /// ray origin)</summary>
        /// <param name="ray">Ray</param>
        /// <param name="box">Box</param>
        /// <param name="intersection">Intersection point</param>
        /// <returns>True iff ray hits box</returns>
        public static bool Intersect(Ray2F ray, Box2F box, ref Vec2F intersection)
        {
            // do X slab
            float tmin, tmax;

            SlabIntersect(
                ray.Direction.X, ray.Origin.X, box.Min.X, box.Max.X, out tmin, out tmax);

            // do Y slab
            float tminTemp, tmaxTemp;

            SlabIntersect(
                ray.Direction.Y, ray.Origin.Y, box.Min.Y, box.Max.Y, out tminTemp, out tmaxTemp);

            if ((tmin > tmaxTemp) || (tminTemp > tmax))
            {
                return(false);
            }

            tmin = Math.Max(tmin, tminTemp);
            tmax = Math.Min(tmax, tmaxTemp);

            // intersection at tmin, the maximal-minimal value
            if (tmin > 0)
            {
                intersection = ray.Origin + ray.Direction * tmin;
                return(true);
            }
            return(false);
        }
Exemplo n.º 3
0
        /// <summary>
        /// Gets the first intersection of a ray with a box (closest intersection to the
        /// ray origin)</summary>
        /// <param name="ray">Ray</param>
        /// <param name="box">Box</param>
        /// <param name="intersection">Intersection point</param>
        /// <returns>True iff ray hits box</returns>
        public static bool Intersect(Ray2F ray, Box2F box, ref Vec2F intersection)
        {
            // do X slab
            float tmin, tmax;
            SlabIntersect(
                ray.Direction.X, ray.Origin.X, box.Min.X, box.Max.X, out tmin, out tmax);

            // do Y slab
            float tminTemp, tmaxTemp;
            SlabIntersect(
                ray.Direction.Y, ray.Origin.Y, box.Min.Y, box.Max.Y, out tminTemp, out tmaxTemp);

            if ((tmin > tmaxTemp) || (tminTemp > tmax))
                return false;

            tmin = Math.Max(tmin, tminTemp);
            tmax = Math.Min(tmax, tmaxTemp);

            // intersection at tmin, the maximal-minimal value
            if (tmin > 0)
            {
                intersection = ray.Origin + ray.Direction * tmin;
                return true;
            }
            return false;
        }
Exemplo n.º 4
0
 private void TestToStringResults(Ray2F o, string s, string listSeparator, string decimalSeparator)
 {
     string[] results = s.Split(new[] { listSeparator }, StringSplitOptions.RemoveEmptyEntries);
     Assert.AreEqual(results.Length, 4);
     foreach (string oneFloatString in results)
         Assert.True(oneFloatString.Contains(decimalSeparator));
     Assert.AreEqual(float.Parse(results[0]), o.Origin.X);
     Assert.AreEqual(float.Parse(results[1]), o.Origin.Y);
     Assert.AreEqual(float.Parse(results[2]), o.Direction.X);
     Assert.AreEqual(float.Parse(results[3]), o.Direction.Y);
 }
Exemplo n.º 5
0
        /// <summary>
        /// Determines if 2 rays intersect, and if so, returns the ray parameters of the intersection point</summary>
        /// <param name="r1">Ray 1</param>
        /// <param name="r2">Ray 2</param>
        /// <param name="t1">Returned ray parameter 1</param>
        /// <param name="t2">Returned ray parameter 2</param>
        /// <returns>True iff the rays intersect (are not parallel)</returns>
        public static bool Intersect(Ray2F r1, Ray2F r2, ref double t1, ref double t2)
        {
            double denom = (r2.Direction.Y * r1.Direction.X - r2.Direction.X * r1.Direction.Y);
            if (Math.Abs(denom) < 0.000001f)
                return false;

            Vec2F d = Vec2F.Sub(r1.Origin, r2.Origin);
            t1 = (r2.Direction.X * d.Y - r2.Direction.Y * d.X) / denom;
            t2 = (r1.Direction.X * d.Y - r1.Direction.Y * d.X) / denom;
            return true;
        }
Exemplo n.º 6
0
        /// <summary>
        /// Determines if 2 rays intersect, and if so, returns the ray parameters of the intersection point</summary>
        /// <param name="r1">Ray 1</param>
        /// <param name="r2">Ray 2</param>
        /// <param name="t1">Returned ray parameter 1</param>
        /// <param name="t2">Returned ray parameter 2</param>
        /// <returns>True iff the rays intersect (are not parallel)</returns>
        public static bool Intersect(Ray2F r1, Ray2F r2, ref double t1, ref double t2)
        {
            double denom = (r2.Direction.Y * r1.Direction.X - r2.Direction.X * r1.Direction.Y);

            if (Math.Abs(denom) < 0.000001f)
            {
                return(false);
            }

            Vec2F d = Vec2F.Sub(r1.Origin, r2.Origin);

            t1 = (r2.Direction.X * d.Y - r2.Direction.Y * d.X) / denom;
            t2 = (r1.Direction.X * d.Y - r1.Direction.Y * d.X) / denom;
            return(true);
        }
Exemplo n.º 7
0
        /// <summary>
        /// Constructs the circle containing 3 points</summary>
        /// <param name="p1">Point 1</param>
        /// <param name="p2">Point 2</param>
        /// <param name="p3">Point 3</param>
        public CircleF(Vec2F p1, Vec2F p2, Vec2F p3)
        {
            Vec2F  o1 = Vec2F.Add(p1, p2); o1 *= 0.5f;
            Vec2F  o2 = Vec2F.Add(p3, p2); o2 *= 0.5f;
            Vec2F  d1 = Vec2F.Sub(p2, p1); d1 = d1.Perp;
            Vec2F  d2 = Vec2F.Sub(p3, p2); d2 = d2.Perp;
            double t1 = 0;
            double t2 = 0;

            if (Ray2F.Intersect(new Ray2F(o1, d1), new Ray2F(o2, d2), ref t1, ref t2))
            {
                Center = o1 + d1 * (float)t1;
                Radius = Vec2F.Distance(Center, p1);
            }
            else
            {
                Center = new Vec2F(float.PositiveInfinity, float.PositiveInfinity);
                Radius = float.PositiveInfinity;
            }
        }