Exemplo n.º 1
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        public static bool ClosestPoints(ISupportMappable support1, ISupportMappable support2, ref JMatrix orientation1,
            ref JMatrix orientation2, ref JVector position1, ref JVector position2,
            out JVector p1, out JVector p2, out JVector normal)
        {
            VoronoiSimplexSolver simplexSolver = simplexSolverPool.GetNew();
            simplexSolver.Reset();

            p1 = p2 = JVector.Zero;

            JVector r = position1 - position2;
            JVector w, v;

            JVector supVertexA;
            JVector rn, vn;

            rn = JVector.Negate(r);

            SupportMapTransformed(support1, ref orientation1, ref position1, ref rn, out supVertexA);

            JVector supVertexB;
            SupportMapTransformed(support2, ref orientation2, ref position2, ref r, out supVertexB);

            v = supVertexA - supVertexB;

            normal = JVector.Zero;

            int iter = 0;

            float distSq = v.LengthSquared();
            float epsilon = 0.00001f;

            while ((distSq > epsilon) && (iter++ < MaxIterations))
            {
                IterationsTaken = iter;
                vn = JVector.Negate(v);
                SupportMapTransformed(support1, ref orientation1, ref position1, ref vn, out supVertexA);
                SupportMapTransformed(support2, ref orientation2, ref position2, ref v, out supVertexB);
                w = supVertexA - supVertexB;

                if (!simplexSolver.InSimplex(w)) simplexSolver.AddVertex(w, supVertexA, supVertexB);
                if (simplexSolver.Closest(out v))
                {
                    distSq = v.LengthSquared();
                    normal = v;
                }
                else distSq = 0.0f;
            }

            simplexSolver.ComputePoints(out p1, out p2);

            if (normal.LengthSquared() > JMath.Epsilon * JMath.Epsilon)
                normal.Normalize();

            simplexSolverPool.GiveBack(simplexSolver);

            return true;
        }
Exemplo n.º 2
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 public FixedLinearSpring(RigidBody body, JVector localAnchor, JVector worldAnchor, float springConstant, float dampingConstant)
 {
     Body = body;
     LocalAnchor = localAnchor;
     WorldAnchor = worldAnchor;
     SpringConstant = springConstant;
     DampingConstant = dampingConstant;
     Length = (worldAnchor - Body.LocalToWorld(localAnchor)).Length();
 }
Exemplo n.º 3
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        /// <summary>
        /// Discrete Box vs Box test. Very fast. No contact info. NOTE: ensure UpdateAxes is called for each BoxShape prior.
        /// </summary>
        /// <param name="A">BoxShape A.</param>
        /// <param name="PA">BoxShape A's position.</param>
        /// <param name="B">BoxShape B.</param>
        /// <param name="PB">BoxShape B's position.</param>
        /// <returns></returns>
        public static bool BoxBoxTest(ref BoxShape A, ref JVector PA, ref BoxShape B, ref JVector PB)
        {
            JVector T = PB - PA;

            // cache scaled local axes
            JVector Ax = A.halfSize.X * A.xAxis;
            JVector Ay = A.halfSize.Y * A.yAxis;
            JVector Bx = B.halfSize.X * B.xAxis;
            JVector By = B.halfSize.Y * B.yAxis;

            // axis to test
            JVector L = A.xAxis;
            float TL = Math.Abs(T * L);

            float a = Math.Abs((Ax) * L) + Math.Abs((Ay) * L);
            float b = Math.Abs((Bx) * L) + Math.Abs((By) * L);

            if (TL > (a + b))
                return false;

            // axis to test
            L = A.yAxis;
            TL = Math.Abs(T * L);

            a = Math.Abs((Ax) * L) + Math.Abs((Ay) * L);
            b = Math.Abs((Bx) * L) + Math.Abs((By) * L);

            if (TL > (a + b))
                return false;

            // axis to test
            L = B.xAxis;
            TL = Math.Abs(T * L);

            a = Math.Abs((Ax) * L) + Math.Abs((Ay) * L);
            b = Math.Abs((Bx) * L) + Math.Abs((By) * L);

            if (TL > (a + b))
                return false;

            // axis to test
            L = B.yAxis;
            TL = Math.Abs(T * L);

            a = Math.Abs((Ax) * L) + Math.Abs((Ay) * L);
            b = Math.Abs((Bx) * L) + Math.Abs((By) * L);

            if (TL > (a + b))
                return false;

            // if all axes overlap collision exists
            return true;
        }
Exemplo n.º 4
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        public static void SupportMapTransformed(ISupportMappable support,
            ref JMatrix orientation, ref JVector position, ref JVector direction, out JVector result)
        {
            // THIS IS *THE* HIGH FREQUENCY CODE OF THE COLLLISION PART OF THE ENGINE
            result.X = ((direction.X * orientation.M11) + (direction.Y * orientation.M12));
            result.Y = ((direction.X * orientation.M21) + (direction.Y * orientation.M22));

            support.SupportMapping(ref result, out result);

            float x = ((result.X * orientation.M11) + (result.Y * orientation.M21));
            float y = ((result.X * orientation.M12) + (result.Y * orientation.M22));

            result.X = position.X + x;
            result.Y = position.Y + y;
        }
Exemplo n.º 5
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        /// <summary>
        /// SupportMapping. Finds the point in the shape furthest away from the given direction.
        /// Imagine a plane with a normal in the search direction. Now move the plane along the normal
        /// until the plane does not intersect the shape. The last intersection point is the result.
        /// </summary>
        /// <param name="direction">The direction.</param>
        /// <param name="result">The result.</param>
        public override void SupportMapping(ref JVector direction, out JVector result)
        {
            float maxDotProduct = float.MinValue;
            int maxIndex = 0;
            float dotProduct;

            for (int i = 0; i < vertices.Count; i++)
            {
                dotProduct = JVector.Dot(vertices[i], direction);
                if (dotProduct > maxDotProduct)
                {
                    maxDotProduct = dotProduct;
                    maxIndex = i;
                }
            }

            result = vertices[maxIndex] - this.shifted;
        }
Exemplo n.º 6
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        public static bool CircleCircleTest(JVector centerA, float radiusA, JVector centerB, float radiusB, out JVector pointA, out JVector pointB, out JVector normal, out float distance)
        {
            // ||A-B|| - (r1+r2) < 0
            float d = JVector.Distance(centerA, centerB);
            float r = radiusA + radiusB;

            distance = d - r;

            normal = (centerA - centerB) / d;

            //penetrationVector = normal * distance;

            // calculate closest 2 points
            pointA = JVector.Negate(normal) * radiusA + centerA;
            pointB = normal * radiusB + centerB;

            if (distance < 0.0f)
                return true;
            else
                return false;
        }
Exemplo n.º 7
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        /// <summary>
        /// Transforms the bounding box into the space given by orientation and position.
        /// </summary>
        /// <param name="position"></param>
        /// <param name="orientation"></param>
        /// <param name="result"></param>
        internal void InverseTransform(ref JVector position, ref JMatrix orientation)
        {
            JVector.Subtract(ref Max, ref position, out Max);
            JVector.Subtract(ref Min, ref position, out Min);

            JVector center;

            JVector.Add(ref Max, ref Min, out center);
            center.X *= 0.5f; center.Y *= 0.5f;

            JVector halfExtents;

            JVector.Subtract(ref Max, ref Min, out halfExtents);
            halfExtents.X *= 0.5f; halfExtents.Y *= 0.5f;

            JVector.TransposedTransform(ref center, ref orientation, out center);

            JMatrix abs; JMath.Absolute(ref orientation, out abs);

            JVector.TransposedTransform(ref halfExtents, ref abs, out halfExtents);

            JVector.Add(ref center, ref halfExtents, out Max);
            JVector.Subtract(ref center, ref halfExtents, out Min);
        }
Exemplo n.º 8
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        public static bool CircleCapsuleTest(JVector centerA, float radiusA, JVector centerB, JVector axis, float length, float radiusB, out JVector pointA, out JVector pointB, out JVector normal, out float distance)
        {
            // get capsule endpoints
            var p0 = centerB - axis * (length * 0.5f);
            var p1 = centerB + axis * (length * 0.5f);

            // get vector from endpoint to circle
            var D = centerA - p0;

            // project vector onto axis and clamp
            var d = JVector.Dot(D, axis);
            d = JMath.Clamp(d, 0, length);

            // get point on axis
            var R = p0 + axis * d;

            // distance
            var b = Math.Abs((centerA - R).Length());

            normal = (centerA - R) / b;

            // calculate closest 2 points
            var RH = JVector.Normalize(centerA - R);

            pointA = JVector.Negate(RH) * radiusA + centerA;
            pointB = RH * radiusB + R;

            normal.Negate();

            distance = b - (radiusA + radiusB);

            //
            if (b < radiusA + radiusB)
                return true;
            return false;
        }
Exemplo n.º 9
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 public void AddPoint(JVector point)
 {
     AddPoint(ref point);
 }
Exemplo n.º 10
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 public bool SegmentIntersect(JVector origin, JVector direction)
 {
     return(SegmentIntersect(ref origin, ref direction));
 }
Exemplo n.º 11
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 /// <summary>
 /// Checks wether a point is within a box or not.
 /// </summary>
 /// <param name="point"></param>
 /// <returns></returns>
 public ContainmentType Contains(JVector point)
 {
     return(this.Contains(ref point));
 }
Exemplo n.º 12
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        /// <summary>
        /// Transforms a vector by the transposed of the given Matrix.
        /// </summary>
        /// <param name="position">The vector to transform.</param>
        /// <param name="matrix">The transform matrix.</param>
        /// <param name="result">The transformed vector.</param>
        public static void TransposedTransform(ref JVector position, ref JMatrix matrix, out JVector result)
        {
            float num0 = ((position.X * matrix.M11) + (position.Y * matrix.M12));
            float num1 = ((position.X * matrix.M21) + (position.Y * matrix.M22));

            result.X = num0;
            result.Y = num1;
        }
Exemplo n.º 13
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 static JVector()
 {
     One = new JVector(1, 1);
     Zero = new JVector(0, 0);
     Left = new JVector(1, 0);
     Right = new JVector(-1, 0);
     Up = new JVector(0, 1);
     Down = new JVector(0, -1);
     MinValue = new JVector(float.MinValue);
     MaxValue = new JVector(float.MaxValue);
     Arbitrary = new JVector(1, 1);
     InternalZero = Zero;
 }
Exemplo n.º 14
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        /// <summary>
        /// Subtracts to vectors.
        /// </summary>
        /// <param name="value1">The first vector.</param>
        /// <param name="value2">The second vector.</param>
        /// <param name="result">The difference of both vectors.</param>
        public static void Subtract(ref JVector value1, ref JVector value2, out JVector result)
        {
            float num0 = value1.X - value2.X;
            float num1 = value1.Y - value2.Y;

            result.X = num0;
            result.Y = num1;
        }
Exemplo n.º 15
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 public static JVector Transform(JVector position, JMatrix matrix)
 {
     JVector result;
     JVector.Transform(ref position, ref matrix, out result);
     return result;
 }
Exemplo n.º 16
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        /// <summary>
        /// Adds two vectors.
        /// </summary>
        /// <param name="value1">The first vector.</param>
        /// <param name="value2">The second vector.</param>
        /// <returns>The sum of both vectors.</returns>
        #region public static JVector operator +(JVector value1, JVector value2)
        public static JVector operator +(JVector value1, JVector value2)
        {
            JVector result; JVector.Add(ref value1, ref value2, out result);

            return(result);
        }
Exemplo n.º 17
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 public static JVector Cross(JVector a, float s)
 {
     return(new JVector(s * a.Y, -s * a.X));
 }
Exemplo n.º 18
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 /// <summary>
 /// Calculates the dot product of two vectors.
 /// </summary>
 /// <param name="value1">The first vector.</param>
 /// <param name="value2">The second vector.</param>
 /// <returns>Returns the dot product of both.</returns>
 #region public static float operator *(JVector value1, JVector value2)
 public static float operator *(JVector value1, JVector value2)
 {
     return(JVector.Dot(ref value1, ref value2));
 }
Exemplo n.º 19
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        /// <summary>
        /// Subtracts two vectors.
        /// </summary>
        /// <param name="value1">The first vector.</param>
        /// <param name="value2">The second vector.</param>
        /// <returns>The difference of both vectors.</returns>
        #region public static JVector operator -(JVector value1, JVector value2)
        public static JVector operator -(JVector value1, JVector value2)
        {
            JVector result; JVector.Subtract(ref value1, ref value2, out result);

            return(result);
        }
Exemplo n.º 20
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        /// <summary>
        /// Calculates the cross product of two vectors.
        /// </summary>
        /// <param name="value1">The first vector.</param>
        /// <param name="value2">The second vector.</param>
        /// <returns>Returns the cross product of both.</returns>
        #region public static JVector operator %(JVector value1, JVector value2)
        public static float operator %(JVector value1, JVector value2)
        {
            float result; JVector.Cross(ref value1, ref value2, out result);

            return(result);
        }
Exemplo n.º 21
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 /// <summary>
 /// Multiply a vector with a factor.
 /// </summary>
 /// <param name="value1">The vector to multiply.</param>
 /// <param name="scaleFactor">The scale factor.</param>
 /// <param name="result">Returns the multiplied vector.</param>
 public static void Multiply(ref JVector value1, float scaleFactor, out JVector result)
 {
     result.X = value1.X * scaleFactor;
     result.Y = value1.Y * scaleFactor;
 }
Exemplo n.º 22
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 /// <summary>
 /// Calculates the dot product of both vectors.
 /// </summary>
 /// <param name="vector1">The first vector.</param>
 /// <param name="vector2">The second vector.</param>
 /// <returns>Returns the dot product of both vectors.</returns>
 public static float Dot(ref JVector vector1, ref JVector vector2)
 {
     return((vector1.X * vector2.X) + (vector1.Y * vector2.Y));
 }
Exemplo n.º 23
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        ///// <summary>
        ///// Returns the largest box possible.
        ///// </summary>
        //public static readonly JBBox LargeBox;

        ///// <summary>
        ///// Returns the smalltest box possible.
        ///// </summary>
        //public static readonly JBBox SmallBox;

        //static JBBox()
        //{
        //    LargeBox.Min = new JVector(float.MinValue);
        //    LargeBox.Max = new JVector(float.MaxValue);
        //    SmallBox.Min = new JVector(float.MaxValue);
        //    SmallBox.Max = new JVector(float.MinValue);
        //}

        /// <summary>
        /// Constructor
        /// </summary>
        /// <param name="min">The minimum point of the box.</param>
        /// <param name="max">The maximum point of the box.</param>
        public JBBox(JVector min, JVector max)
        {
            this.Min = min;
            this.Max = max;
        }
Exemplo n.º 24
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 public static JVector Cross(float s, JVector a)
 {
     return(new JVector(-s * a.Y, s * a.X));
 }
Exemplo n.º 25
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 /// <summary>
 /// Calculates the dot product of two vectors.
 /// </summary>
 /// <param name="vector1">The first vector.</param>
 /// <param name="vector2">The second vector.</param>
 /// <returns>Returns the dot product of both vectors.</returns>
 #region public static float Dot(JVector vector1, JVector vector2)
 public static float Dot(JVector vector1, JVector vector2)
 {
     return(JVector.Dot(ref vector1, ref vector2));
 }
Exemplo n.º 26
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 internal static JVector Clamp(JVector v, float len)
 {
     return((JVector.Dot(v, v) > len * len) ? JVector.Multiply(JVector.Normalize(v), len) : v);
 }
Exemplo n.º 27
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        /// <summary>
        /// Swaps the components of both vectors.
        /// </summary>
        /// <param name="vector1">The first vector to swap with the second.</param>
        /// <param name="vector2">The second vector to swap with the first.</param>
        public static void Swap(ref JVector vector1, ref JVector vector2)
        {
            float temp;

            temp = vector1.X;
            vector1.X = vector2.X;
            vector2.X = temp;

            temp = vector1.Y;
            vector1.Y = vector2.Y;
            vector2.Y = temp;
        }
Exemplo n.º 28
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 public static JVector Multiply(JVector value1, float scaleFactor)
 {
     JVector result;
     JVector.Multiply(ref value1, scaleFactor, out result);
     return result;
 }
Exemplo n.º 29
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        /// <summary>
        /// Transforms a vector by the transposed of the given Matrix.
        /// </summary>
        /// <param name="position">The vector to transform.</param>
        /// <param name="matrix">The transform matrix.</param>
        /// <param name="result">The transformed vector.</param>
        public static JVector TransposedTransform(JVector position, JMatrix matrix)
        {
            JVector result;
            float num0 = ((position.X * matrix.M11) + (position.Y * matrix.M12));
            float num1 = ((position.X * matrix.M21) + (position.Y * matrix.M22));

            result.X = num0;
            result.Y = num1;
            return result;
        }
Exemplo n.º 30
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 /// <summary>
 /// Multiply a vector with a factor.
 /// </summary>
 /// <param name="value1">The vector to multiply.</param>
 /// <param name="scaleFactor">The scale factor.</param>
 /// <param name="result">Returns the multiplied vector.</param>
 public static void Multiply(ref JVector value1, float scaleFactor, out JVector result)
 {
     result.X = value1.X * scaleFactor;
     result.Y = value1.Y * scaleFactor;
 }
Exemplo n.º 31
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 internal static JVector Clamp(JVector v, float len)
 {
     return (JVector.Dot(v, v) > len * len) ? JVector.Multiply(JVector.Normalize(v), len) : v;
 }
        public override bool Raycast(JVector rayOrigin, JVector rayDirection, RaycastCallback raycast, out RigidBody body, out JVector normal, out float fraction)
        {
            throw new NotImplementedException();
            //body = null; normal = JVector.Zero; fraction = float.MaxValue;

            //JVector tempNormal; float tempFraction;
            //bool result = false;

            //// TODO: This can be done better in CollisionSystemPersistenSAP
            //foreach (IBroadphaseEntity e in bodyList)
            //{
            //    if (e is SoftBody)
            //    {
            //        SoftBody softBody = e as SoftBody;
            //        foreach (RigidBody b in softBody.VertexBodies)
            //        {
            //            if (this.Raycast(b, rayOrigin, rayDirection, out tempNormal, out tempFraction))
            //            {
            //                if (tempFraction < fraction && (raycast == null || raycast(b, tempNormal, tempFraction)))
            //                {
            //                    body = b;
            //                    normal = tempNormal;
            //                    fraction = tempFraction;
            //                    result = true;
            //                }
            //            }
            //        }
            //    }
            //    else
            //    {
            //        RigidBody b = e as RigidBody;

            //        if (this.Raycast(b, rayOrigin, rayDirection, out tempNormal, out tempFraction))
            //        {
            //            if (tempFraction < fraction && (raycast == null || raycast(b, tempNormal, tempFraction)))
            //            {
            //                body = b;
            //                normal = tempNormal;
            //                fraction = tempFraction;
            //                result = true;
            //            }
            //        }
            //    }
            //}

            //return result;
        }
Exemplo n.º 33
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 public JVector ScreenToWorldSpace(JVector position)
 {
     var t = this.Game.GraphicsDevice.Viewport.Unproject(new Vector3(position.X, position.Y, 0), Projection, View, Matrix.Identity);
     return new JVector(t.X, t.Y);
 }
Exemplo n.º 34
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 public static Vector2 ToXNAVector2(JVector vector)
 {
     return new Vector2(vector.X, vector.Y);
 }
Exemplo n.º 35
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 public bool RayIntersect(JVector origin, JVector direction)
 {
     return(RayIntersect(ref origin, ref direction));
 }
Exemplo n.º 36
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        protected override void Update(GameTime gameTime)
        {
            // Allows the game to exit
            if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
                this.Exit();

            KeyboardState keys = Keyboard.GetState();
            JVector moveVector = JVector.Zero;
            float amountOfMovement = 0.05f;

            if (keys.IsKeyDown(Keys.Right))
                moveVector.X += amountOfMovement;
            if (keys.IsKeyDown(Keys.Left))
                moveVector.X -= amountOfMovement;
            if (keys.IsKeyDown(Keys.Down))
                moveVector.Y -= amountOfMovement;
            if (keys.IsKeyDown(Keys.Up))
                moveVector.Y += amountOfMovement;

            PB += moveVector;
            OA = (float)gameTime.TotalGameTime.TotalSeconds * 0.1f;
            OB = (float)gameTime.TotalGameTime.TotalSeconds * -0.1f;

            DrawBox(A, PA, OA, Color.Blue * 0.25f);
            DrawBox(B, PB, OB, Color.Green * 0.25f);

            float t = 0.0f;
            JVector[] CA = new JVector[2], CB = new JVector[2];
            int NumContacts = 0;

            sw.Start();

            JMatrix OAM = JMatrix.CreateRotationZ(OA);
            JMatrix OBM = JMatrix.CreateRotationZ(OB);

            for (int i = 0; i < 1; i++)
            {
                A.UpdateAxes(OA);
                B.UpdateAxes(OB);

                //hit = Collision.BoxBoxTest(ref A, ref PA, ref B, ref PB);
                //AV = new List<JVector> { A.GetCorner(0), A.GetCorner(1), A.GetCorner(2), A.GetCorner(3) };
                //BV = new List<JVector> { B.GetCorner(0), B.GetCorner(1), B.GetCorner(2), B.GetCorner(3) };

                //hit = SAT.Collide(ref AV, ref PA, ref VA, ref OAM,
                //    ref BV, ref PB, ref VB, ref OBM,
                //    ref normal, ref t);

                //if (hit)
                //{
                //    SAT.FindContacts(ref AV, ref PA, ref VA, ref OAM,
                //        ref BV, ref PB, ref VB, ref OBM,
                //        ref normal, t, out CA, out CB, out NumContacts);

                //    normal.Normalize();
                //}

                hit = Collision.BoxBoxTestContact(ref A, ref PA, ref OAM, ref B, ref PB, ref OBM,
                    out normal, out t, out CA, out CB, out NumContacts);

                penetration = t;
                iterations = NumContacts;
            }

            sw.Stop();
            ticks = sw.ElapsedTicks / 1;
            sw.Reset();

            if (hit)
            {
                //DrawBox(A, PA + normal * (t * 0.5f), OA, Color.Blue);
                //DrawBox(B, PB - normal * (t * 0.5f), OB, Color.Green);

                for (int i = 0; i < NumContacts; i++)
                {
                    DebugDrawer.DrawPoint(CA[i]);// + normal * (t * 0.5f));
                    DebugDrawer.DrawPoint(CB[i]);// - normal * (t * 0.5f));
                }
            }

            base.Update(gameTime);
        }
Exemplo n.º 37
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 /// <summary>
 /// Checks whether a point is inside, outside or intersecting
 /// a point.
 /// </summary>
 /// <param name="point">A point in space.</param>
 /// <returns>The ContainmentType of the point.</returns>
 public ContainmentType Contains(ref JVector point)
 {
     return((((this.Min.X <= point.X) && (point.X <= this.Max.X)) &&
             ((this.Min.Y <= point.Y) && (point.Y <= this.Max.Y))) ? ContainmentType.Contains : ContainmentType.Disjoint);
 }
Exemplo n.º 38
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 void DrawPoly(List<JVector> poly, JVector pos, JMatrix o, Color color)
 {
     for (int i = 0; i < poly.Count - 1; i++)
     {
         JVector a = JVector.Transform(poly[i], o * JMatrix.CreateTranslation(pos));
         JVector b = JVector.Transform(poly[i + 1], o * JMatrix.CreateTranslation(pos));
         DebugDrawer.DrawLine(a, b, color);
     }
     JVector c = JVector.Transform(poly[0], o * JMatrix.CreateTranslation(pos));
     JVector d = JVector.Transform(poly[poly.Count - 1], o * JMatrix.CreateTranslation(pos));
     DebugDrawer.DrawLine(c, d, color);
 }
Exemplo n.º 39
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 public void AddPoint(ref JVector point)
 {
     JVector.Max(ref this.Max, ref point, out this.Max);
     JVector.Min(ref this.Min, ref point, out this.Min);
 }
Exemplo n.º 40
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 /// <summary>
 /// Gets a vector with the maximum x and y values of both vectors.
 /// </summary>
 /// <param name="value1">The first value.</param>
 /// <param name="value2">The second value.</param>
 /// <param name="result">A vector with the maximum x and y values of both vectors.</param>
 public static void Max(ref JVector value1, ref JVector value2, out JVector result)
 {
     result.X = (value1.X > value2.X) ? value1.X : value2.X;
     result.Y = (value1.Y > value2.Y) ? value1.Y : value2.Y;
 }
Exemplo n.º 41
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 /// <summary>
 /// Inverses the direction of a vector.
 /// </summary>
 /// <param name="value">The vector to inverse.</param>
 /// <returns>The negated vector.</returns>
 public static JVector Negate(JVector value)
 {
     JVector result;
     JVector.Negate(ref value, out result);
     return result;
 }
Exemplo n.º 42
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        /// <summary>
        /// Transforms a vector by the transposed of the given Matrix.
        /// </summary>
        /// <param name="position">The vector to transform.</param>
        /// <param name="matrix">The transform matrix.</param>
        /// <param name="result">The transformed vector.</param>
        public static void TransposedTransform(ref JVector position, ref JMatrix matrix, out JVector result)
        {
            float num0 = ((position.X * matrix.M11) + (position.Y * matrix.M12));
            float num1 = ((position.X * matrix.M21) + (position.Y * matrix.M22));

            result.X = num0;
            result.Y = num1;
        }
        public override bool Raycast(RigidBody body, JVector rayOrigin, JVector rayDirection, out JVector normal, out float fraction)
        {
            throw new NotImplementedException();
            //fraction = float.MaxValue; normal = JVector.Zero;

            //if (!body.BoundingBox.RayIntersect(ref rayOrigin, ref rayDirection)) return false;

            //if (body.Shape is Multishape)
            //{
            //    Multishape ms = (body.Shape as Multishape).RequestWorkingClone();

            //    JVector tempNormal; float tempFraction;
            //    bool multiShapeCollides = false;

            //    JVector transformedOrigin; JVector.Subtract(ref rayOrigin, ref body.position, out transformedOrigin);
            //    JVector.Transform(ref transformedOrigin, ref body.invOrientation, out transformedOrigin);
            //    JVector transformedDirection; JVector.Transform(ref rayDirection, ref body.invOrientation, out transformedDirection);

            //    int msLength = ms.Prepare(ref transformedOrigin, ref transformedDirection);

            //    for (int i = 0; i < msLength; i++)
            //    {
            //        ms.SetCurrentShape(i);

            //        if (GJKCollide.Raycast(ms, ref body.orientation, ref body.invOrientation, ref body.position,
            //            ref rayOrigin, ref rayDirection, out tempFraction, out tempNormal))
            //        {
            //            if (tempFraction < fraction)
            //            {
            //                if (useTerrainNormal && ms is TerrainShape)
            //                {
            //                    (ms as TerrainShape).CollisionNormal(out tempNormal);
            //                    JVector.Transform(ref tempNormal, ref body.orientation, out tempNormal);
            //                    tempNormal.Negate();
            //                }
            //                else if (useTriangleMeshNormal && ms is TriangleMeshShape)
            //                {
            //                    (ms as TriangleMeshShape).CollisionNormal(out tempNormal);
            //                    JVector.Transform(ref tempNormal, ref body.orientation, out tempNormal);
            //                    tempNormal.Negate();
            //                }

            //                normal = tempNormal;
            //                fraction = tempFraction;
            //                multiShapeCollides = true;
            //            }
            //        }
            //    }

            //    ms.ReturnWorkingClone();
            //    return multiShapeCollides;
            //}
            //else
            //{
            //    return (GJKCollide.Raycast(body.Shape, ref body.orientation, ref body.invOrientation, ref body.position,
            //        ref rayOrigin, ref rayDirection, out fraction, out normal));
            //}
        }
Exemplo n.º 44
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        /// <summary>
        /// Inverses the direction of a vector.
        /// </summary>
        /// <param name="value">The vector to inverse.</param>
        /// <param name="result">The negated vector.</param>
        public static void Negate(ref JVector value, out JVector result)
        {
            float num0 = -value.X;
            float num1 = -value.Y;

            result.X = num0;
            result.Y = num1;
        }
Exemplo n.º 45
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 public static Vector3 ToXNAVector3(JVector vector)
 {
     return new Vector3(vector.X, vector.Y, 0.0f);
 }
Exemplo n.º 46
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 public static JVector Normalize(JVector value)
 {
     JVector result;
     JVector.Normalize(ref value, out result);
     return result;
 }
Exemplo n.º 47
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        void DrawBox(BoxShape box, JVector pos, float orientation, Color color)
        {
            List<JVector> poly = new List<JVector>
            {
                new JVector(-box.Size.X * 0.5f, -box.Size.Y * 0.5f),
                new JVector(box.Size.X * 0.5f, -box.Size.Y * 0.5f),
                new JVector(box.Size.X * 0.5f, box.Size.Y * 0.5f),
                new JVector(-box.Size.X * 0.5f,box.Size.Y * 0.5f)
            };

            DrawPoly(poly, pos, JMatrix.CreateRotationZ(orientation), color);
        }
Exemplo n.º 48
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 /// <summary>
 /// Normalizes the given vector.
 /// </summary>
 /// <param name="value">The vector which should be normalized.</param>
 /// <param name="result">A normalized vector.</param>
 public static void Normalize(ref JVector value, out JVector result)
 {
     float num2 = (value.X * value.X) + (value.Y * value.Y);
     float num = 1f / ((float)Math.Sqrt((double)num2));
     result.X = value.X * num;
     result.Y = value.Y * num;
 }
Exemplo n.º 49
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        protected override void Initialize()
        {
            DebugDrawer = new DebugDrawer(this);
            this.Components.Add(DebugDrawer);

            Camera = new Camera(this);
            this.Components.Add(Camera);

            A = new BoxShape(4, 1);
            PA = new JVector(-1, 2);
            VA = new JVector(0, 0);
            OA = MathHelper.ToRadians(0);

            B = new BoxShape(1, 4);
            PB = new JVector(-3, 0);
            VB = new JVector(0, 0);
            OB = 0;

            base.Initialize();
        }
Exemplo n.º 50
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 public static JVector Subtract(JVector value1, JVector value2)
 {
     JVector result;
     JVector.Subtract(ref value1, ref value2, out result);
     return result;
 }