Пример #1
0
 public PlanetScene()
 {
     var sphere = Object3dInfo.LoadFromObjSingle(Media.Get("planet.obj"));
     var planet = new Mesh3d(sphere, new GenericMaterial(Color.Red));
     planet.Scale(30000);
     (planet.MainMaterial as GenericMaterial).Type = GenericMaterial.MaterialType.PlanetSurface;
     (planet.MainMaterial as GenericMaterial).TesselationMultiplier = 0.007f;
     planet.Translate(0, -30500, 0);
     
     Add(planet);
 }
Пример #2
0
        public FortressScene()
        {
            Object3dInfo skydomeInfo = Object3dInfo.LoadFromObjSingle(Media.Get("usky.obj"));
            var skydomeMaterial = GenericMaterial.FromMedia("skyreal.png");
            var skydome = new Mesh3d(skydomeInfo, skydomeMaterial);
            skydome.Scale(55000);
            skydome.Translate(0, -100, 0);
            //skydome.IgnoreLighting = true;
            //skydome.DiffuseComponent = 0.2f;
            Add(skydome);
               /* var sun = new Sun(new Vector3(0.1f, -1, 0).ToQuaternion(Vector3.UnitY), new Vector4(1, 0.97f, 0.92f, 120), 300, 100, 70, 40, 10, 1);
            GLThread.OnUpdate += (o, e) =>
            {
                var kb = OpenTK.Input.Keyboard.GetState();
                if(kb.IsKeyDown(OpenTK.Input.Key.U))
                {
                    var quat = Quaternion.FromAxisAngle(sun.Orientation.GetTangent(MathExtensions.TangentDirection.Left), -0.01f);
                    sun.Orientation = Quaternion.Multiply(sun.Orientation, quat);
                }
                if(kb.IsKeyDown(OpenTK.Input.Key.J))
                {
                    var quat = Quaternion.FromAxisAngle(sun.Orientation.GetTangent(MathExtensions.TangentDirection.Left), 0.01f);
                    sun.Orientation = Quaternion.Multiply(sun.Orientation, quat);
                }
                if(kb.IsKeyDown(OpenTK.Input.Key.H))
                {
                    var quat = Quaternion.FromAxisAngle(Vector3.UnitY, -0.01f);
                    sun.Orientation = Quaternion.Multiply(sun.Orientation, quat);
                }
                if(kb.IsKeyDown(OpenTK.Input.Key.K))
                {
                    var quat = Quaternion.FromAxisAngle(Vector3.UnitY, 0.01f);
                    sun.Orientation = Quaternion.Multiply(sun.Orientation, quat);
                }
            };*/

            List<Mesh3d> nodes1 = new List<Mesh3d>();
            List<Mesh3d> leaves1 = new List<Mesh3d>();
            Random rand = new Random();
            for(int x = 0; x < 3; x++)
            {
                for(int z = 0; z < 3; z++)
                {
                    var tree = TreeGenerator.CreateTree(MathHelper.DegreesToRadians(30), MathHelper.DegreesToRadians(45), 4, 4, 6666, 0.3f, true);
                    var scale = (float)rand.NextDouble() * 2 + 1;
                    var tx = (float)rand.NextDouble() * 2 + 4;
                    var ty = (float)rand.NextDouble() * 2 + 4;
                    var mergedNodes = tree[0].Merge();
                    mergedNodes.Translate(x * 5 + tx, 0, z * 5 + ty);
                    mergedNodes.Scale(scale);
                    nodes1.Add(mergedNodes);

                    var mergedLeaves = tree[1].Merge();
                    mergedLeaves.Translate(x * 5 + tx, 0, z * 5 + ty);
                    mergedLeaves.Scale(scale);
                    leaves1.Add(mergedLeaves);

                    //tree[0].ObjectInfo.FreeCPUMemory();
                    //tree[1].ObjectInfo.FreeCPUMemory();
                }
            }
            Mesh3d singleNodes = Mesh3d.Merge(nodes1);
            Mesh3d singleLeaves = Mesh3d.Merge(leaves1);
            foreach(var o in nodes1)
                o.MainObjectInfo.FreeCPUMemory();
            foreach(var o in leaves1)
                o.MainObjectInfo.FreeCPUMemory();

            InstancedMesh3d nodes = new InstancedMesh3d(singleNodes.MainObjectInfo, singleNodes.MainMaterial);
            InstancedMesh3d leaves = new InstancedMesh3d(singleLeaves.MainObjectInfo, singleLeaves.MainMaterial);
            for(int x = 0; x < 1; x++)
            {
                for(int z = 0; z < 1; z++)
                {
                    nodes.Transformations.Add(new TransformationManager(new Vector3(x * 50, 0, z * 50)));
                    leaves.Transformations.Add(new TransformationManager(new Vector3(x * 50, 0, z * 50)));
                }
            }
            nodes.UpdateMatrix();
            leaves.UpdateMatrix();
            Add(nodes);
            Add(leaves);

            /*GLThread.CreateTimer(() =>
            {
                GLThread.Invoke(() => read());

            }, 2000).Start();*/
            Object3dInfo waterInfo = Object3dGenerator.CreateTerrain(new Vector2(-200, -200), new Vector2(200, 200), new Vector2(100, 100), Vector3.UnitY, 333, (x, y) => 0);

            var color = GenericMaterial.FromMedia("checked.png");
            //color.SetBumpMapFromMedia("lightref.png");
            Mesh3d water = new Mesh3d(waterInfo, color);
            water.SetMass(0);
            water.Translate(0, 0, 0);
            water.SetCollisionShape(new BulletSharp.StaticPlaneShape(Vector3.UnitY, 0));
            Add(water);
        }
Пример #3
0
        public OldCityScene()
        {
            var scene = Object3dInfo.LoadSceneFromObj(Media.Get("cryteksponza.obj"), Media.Get("cryteksponza.mtl"), 0.03f);
            //var instances = InstancedMesh3d.FromMesh3dList(testroom);
            foreach(var ob in scene)
            {
                ob.SetMass(0);
                //ob.SetCollisionShape(ob.MainObjectInfo.GetAccurateCollisionShape());
                //ob.SpecularComponent = 0.1f;
                //ob.MainMaterial.ReflectionStrength = ob.MainMaterial.SpecularComponent;
                //ob.SetCollisionShape(ob.ObjectInfo.GetAccurateCollisionShape());
               // ob.Material = new SolidColorMaterial(new Vector4(1, 1, 1, 0.1f));
                //(ob.MainMaterial as GenericMaterial).Type = GenericMaterial.MaterialType.WetDrops;
                //(ob.MainMaterial as GenericMaterial).BumpMap = null;
                this.Add(ob);
            }
            PathTracer tracer = new PathTracer();
            tracer.PrepareTrianglesData(scene);
            //var protagonist = Object3dInfo.LoadSceneFromObj(Media.Get("protagonist.obj"), Media.Get("protagonist.mtl"), 1.0f);
            //foreach(var o in protagonist)
            //    Add(o);
            /*
               var fountainWaterObj = Object3dInfo.LoadFromObjSingle(Media.Get("turbinegun.obj"));
               var water = new Mesh3d(fountainWaterObj, new GenericMaterial(new Vector4(1, 1, 1, 1)));
               water.Transformation.Scale(1.0f);
               water.Translate(0, 10, 0);
               Add(water);*/

               Object3dInfo waterInfo = Object3dGenerator.CreateTerrain(new Vector2(-200, -200), new Vector2(200, 200), new Vector2(100, 100), Vector3.UnitY, 333, (x, y) => 0);

               var color = GenericMaterial.FromMedia("checked.png");
               color.SetNormalMapFromMedia("stones_map.png");
               //color.SetBumpMapFromMedia("lightref.png");
               Mesh3d water2 = new Mesh3d(waterInfo, color);
               water2.SetMass(0);
               water2.Translate(0, 0.1f, 0);
               water2.MainMaterial.ReflectionStrength = 1;
               //water.SetCollisionShape(new BulletSharp.StaticPlaneShape(Vector3.UnitY, 0));
               Add(water2);
               var dragon3dInfo = Object3dInfo.LoadFromObjSingle(Media.Get("apple.obj"));
               dragon3dInfo.ScaleUV(0.1f);
               var mat = GenericMaterial.FromMedia("skin.jpg");
               var dragon = new Mesh3d(dragon3dInfo, mat);
               //mat.Type = GenericMaterial.MaterialType.WetDrops;
               //dragon.Scale(5);
               dragon.SetMass(0);
               dragon.SetCollisionShape(dragon3dInfo.GetAccurateCollisionShape());
               Add(dragon);
            /*
            Object3dInfo waterInfo = Object3dGenerator.CreateTerrain(new Vector2(-200, -200), new Vector2(200, 200), new Vector2(100, 100), Vector3.UnitY, 333, (x, y) => 0);

            var color = new GenericMaterial(Color.Green);
            color.SetBumpMapFromMedia("grassbump.png");
            color.Type = GenericMaterial.MaterialType.Grass;
            Mesh3d water = new Mesh3d(waterInfo, color);
            water.SetMass(0);
            water.Translate(0, 1, 0);
            water.SetCollisionShape(new BulletSharp.StaticPlaneShape(Vector3.UnitY, 0));
            Add(water);

            var dragon3dInfo = Object3dInfo.LoadFromRaw(Media.Get("lucymidres.vbo.raw"), Media.Get("lucymidres.indices.raw"));
            dragon3dInfo.ScaleUV(0.1f);
            var dragon = new Mesh3d(dragon3dInfo, new GenericMaterial(Color.White));
            //dragon.Translate(0, 0, 20);
            dragon.Scale(80);
            Add(dragon);
            */
        }
Пример #4
0
        public static List<Mesh3d> LoadSceneFromCollada(string infile)
        {
            List<Mesh3d> infos = new List<Mesh3d>();

            XDocument xml = XDocument.Load(infile);
            var colladaNode = xml.Elements().First();
            var lib = colladaNode.SelectSingle("library_geometries");
            var geometries = lib.SelectMany("geometry");

            foreach(var geom in geometries)
            {
                try
                {
                    string geoID = geom.Attribute("id").Value;
                    string geoName = geom.Attribute("name").Value;
                    List<float> xyzs = geom.SelectSingle("mesh").SelectMany("source").ElementAt(0).SelectSingle("float_array").Value.Split(new char[] { ' ' }).Select<string, float>((a) => float.Parse(a, System.Globalization.NumberFormatInfo.InvariantInfo)).ToList();
                    List<float> normals = geom.SelectSingle("mesh").SelectMany("source").ElementAt(1).SelectSingle("float_array").Value.Trim().Split(new char[] { ' ' }).Select<string, float>((a) => float.Parse(a, System.Globalization.NumberFormatInfo.InvariantInfo)).ToList();

                    List<float> uvs = null;
                    try
                    {
                        uvs = geom.SelectSingle("mesh").SelectMany("source").ElementAt(2).SelectSingle("float_array").Value.Trim().Split(new char[] { ' ' }).Select<string, float>((a) => float.Parse(a, System.Globalization.NumberFormatInfo.InvariantInfo)).ToList();
                    }
                    catch
                    {
                        uvs = new List<float>();
                    }
                    List<int> indices = geom.SelectSingle("mesh").SelectSingle("polylist").SelectSingle("p").Value.Trim().Split(new char[] { ' ' }).Select<string, int>((a) => int.Parse(a)).ToList();
                    List<float> VBO = new List<float>();
                    List<uint> indicesNew = new List<uint>();
                    uint vcount = 0;
                    for(int i = 0; i < indices.Count; )
                    {
                        int vid = indices[i] * 3;
                        int nid = indices[i + 1] * 3;
                        int uid = indices[i + 2] * 2;
                        indicesNew.Add(vcount++);
                        VBO.AddRange(new float[] { -xyzs[vid + 1], xyzs[vid + 2], -xyzs[vid] });
                        if(uvs.Count > 0)
                        {
                            VBO.AddRange(new float[] { uvs[uid], uvs[uid + 1] });
                            i += 3;
                        }
                        else
                        {
                            VBO.AddRange(new float[] { 0, 0 });
                            i += 2;
                        }
                        VBO.AddRange(new float[] { -normals[nid + 1], normals[nid + 2], -normals[nid] });
                    }
                    var objinfo = new Object3dInfo(VBO, indicesNew);
                    var transformationNode = colladaNode.SelectSingle("library_visual_scenes").SelectSingle("visual_scene").SelectMany("node").First((a) => a.SelectSingle("instance_geometry").Attribute("url").Value == "#" + geoID);
                    var mesh = new Mesh3d(objinfo, new GenericMaterial(Color.White));
                    List<float> transVector = transformationNode.SelectMany("translate").First((a) => a.Attribute("sid").Value == "location").Value.Trim().Split(new char[] { ' ' }).Select<string, float>((a) => float.Parse(a, System.Globalization.NumberFormatInfo.InvariantInfo)).ToList();
                    List<List<float>> rots = transformationNode.SelectMany("rotate").Select<XElement, List<float>>((a) => a.Value.Trim().Split(new char[] { ' ' }).Select<string, float>((ax) => float.Parse(ax, System.Globalization.NumberFormatInfo.InvariantInfo)).ToList()).ToList();
                    List<float> scale = transformationNode.SelectMany("scale").First((a) => a.Attribute("sid").Value == "scale").Value.Trim().Split(new char[] { ' ' }).Select<string, float>((a) => float.Parse(a, System.Globalization.NumberFormatInfo.InvariantInfo)).ToList();
                    mesh.Translate(-transVector[1], transVector[2], -transVector[0]);
                    foreach(var r in rots)
                        mesh.Rotate(Quaternion.FromAxisAngle(new Vector3(-r[1], r[2], -r[0]), MathHelper.DegreesToRadians(r[3])));
                    mesh.Scale(scale[1], scale[2], scale[0]);
                    infos.Add(mesh);
                }
                catch
                {
                }
            }

            return infos;
        }
Пример #5
0
        public SculptScene()
        {
            var sun = new Sun(new Vector3(0.1f, -1, 0).ToQuaternion(Vector3.UnitY), new Vector4(1, 0.97f, 0.92f, 120), 300, 100, 70, 40, 10, 1);
            GLThread.OnUpdate += (o, e) =>
            {
                var kb = OpenTK.Input.Keyboard.GetState();
                if(kb.IsKeyDown(OpenTK.Input.Key.U))
                {
                    var quat = Quaternion.FromAxisAngle(sun.Orientation.GetTangent(MathExtensions.TangentDirection.Left), -0.01f);
                    sun.Orientation = Quaternion.Multiply(sun.Orientation, quat);
                }
                if(kb.IsKeyDown(OpenTK.Input.Key.J))
                {
                    var quat = Quaternion.FromAxisAngle(sun.Orientation.GetTangent(MathExtensions.TangentDirection.Left), 0.01f);
                    sun.Orientation = Quaternion.Multiply(sun.Orientation, quat);
                }
                if(kb.IsKeyDown(OpenTK.Input.Key.H))
                {
                    var quat = Quaternion.FromAxisAngle(Vector3.UnitY, -0.01f);
                    sun.Orientation = Quaternion.Multiply(sun.Orientation, quat);
                }
                if(kb.IsKeyDown(OpenTK.Input.Key.K))
                {
                    var quat = Quaternion.FromAxisAngle(Vector3.UnitY, 0.01f);
                    sun.Orientation = Quaternion.Multiply(sun.Orientation, quat);
                }
            };

            var skysphere = Object3dInfo.LoadFromObjSingle(Media.Get("skyicosphere.obj"));
            var skymesh = new Mesh3d(skysphere, new GenericMaterial(Color.SkyBlue));
            skymesh.Scale(8000);
            skymesh.MainMaterial.IgnoreLighting = true;
            Add(skymesh);

            var dragon3dInfo = Object3dInfo.LoadFromObjSingle(Media.Get("apple.obj"));
            dragon3dInfo.ScaleUV(0.1f);
            var mat = GenericMaterial.FromMedia("skin.jpg");
            var dragon = new Mesh3d(dragon3dInfo, mat);
            //mat.Type = GenericMaterial.MaterialType.WetDrops;
            dragon.Translate(0, 0, 20);
            //dragon.Scale(5);
            dragon.SetMass(0);
            dragon.SetCollisionShape(dragon3dInfo.GetAccurateCollisionShape());
            Add(dragon);
            /*
            var planeinfo = Object3dGenerator.CreateTerrain(new Vector2(-100, -100), new Vector2(100, 100), new Vector2(50, 50), Vector3.UnitY, 300, (x, y) => 0);
            var plane = new Mesh3d(planeinfo, new GenericMaterial(Color.Gainsboro));

            (plane.MainMaterial as GenericMaterial).SetBumpMapFromMedia("bumpy.jpg");
            Add(plane);*/

            //var text = new Text(0.0f, 0.5f, "Hello żółć 汉语 / 漢語; Hànyǔ or 中文; Zhōngwén", "Segoe UI", 24, Color.White);
            //World.Root.UI.Elements.Add(text);

            /*
            var tree = TreeGenerator.CreateTreeSingle(MathHelper.DegreesToRadians(30), MathHelper.DegreesToRadians(45), 5, 5, 6666, 0.3f, false, true);
            Mesh3d nodes = tree[0];
            foreach(var t in tree)
                Add(t);

            Random rand = new Random();

            GLThread.OnUpdate += (o, e) =>
            {
                foreach(var b in nodes.Bones)
                {
                    if(b.Name == "root" || b.Name == "rootofroot")
                        continue;
                    var orient = b.Orientation;
                    var randomQuat = Quaternion.Multiply(Quaternion.FromAxisAngle(Vector3.UnitX, (float)rand.NextDouble() - 0.5f), Quaternion.FromAxisAngle(Vector3.UnitZ, (float)rand.NextDouble() - 0.5f));
                    var neworient = Quaternion.Slerp(orient, randomQuat, 0.11f);
                    b.Orientation = neworient;
                }
            };*/
        }
Пример #6
0
        public CarScene()
        {
            Object3dInfo waterInfo = Object3dGenerator.CreateGround(new Vector2(-200, -200), new Vector2(200, 200), new Vector2(100, 100), Vector3.UnitY);

            var color = GenericMaterial.FromMedia("checked.png", "183_norm.JPG");
            Mesh3d water = new Mesh3d(waterInfo, color);
            water.SetMass(0);
            water.Translate(0, -10, 0);
            water.SetCollisionShape(new BulletSharp.StaticPlaneShape(Vector3.UnitY, 0));
            World.Root.Add(water);

            var lod1 = Object3dInfo.LoadFromRaw(Media.Get("lucy_lod1.vbo.raw"), Media.Get("lucy_lod1.indices.raw"));
            var mat = new GenericMaterial(new Vector4(0, 0, 1, 1f));
            var dragon = new Mesh3d(lod1, mat);
            dragon.Transformation.Scale(2);
            Add(dragon);

            var rand = new Random();
            var grasslod0 = Object3dInfo.LoadFromObjSingle(Media.Get("grasslod1.obj"));
            var grasslod1 = Object3dInfo.LoadFromObjSingle(Media.Get("grasslod1.obj"));
            var grasslod2 = Object3dInfo.LoadFromObjSingle(Media.Get("grasslod2.obj"));
            var grasslod3 = Object3dInfo.LoadFromObjSingle(Media.Get("grasslod3.obj"));
            var grasscolor = new GenericMaterial(Color.DarkGreen);
            var grassInstanced = new InstancedMesh3d(grasslod2, grasscolor);
            for(int x = -15; x < 15; x++)
            {
                for(int y = -15; y < 15; y++)
                {
                    grassInstanced.Transformations.Add(new TransformationManager(new Vector3(x, 0, y), Quaternion.FromAxisAngle(Vector3.UnitY, (float)rand.NextDouble() * MathHelper.Pi), new Vector3(1, 1, 1)));
                    grassInstanced.Instances++;
                }
            }
            grassInstanced.UpdateMatrix();
            Add(grassInstanced);

            ProjectionLight redConeLight = new ProjectionLight(new Vector3(1, 25, 1), Quaternion.Identity, 5000, 5000, MathHelper.PiOver2, 1.0f, 10000.0f);
            redConeLight.LightColor = new Vector4(1, 1, 1, 1);
            redConeLight.BuildOrthographicProjection(500, 500, -100, 100);
            redConeLight.camera.LookAt(Vector3.Zero);

            LightPool.Add(redConeLight);

            var wheel3dInfo = Object3dInfo.LoadFromObjSingle(Media.Get("fcarwheel.obj"));
            var car3dInfo = Object3dInfo.LoadFromObjSingle(Media.Get("fcarbody.obj"));

            var car = new Mesh3d(car3dInfo, new GenericMaterial(Color.LightGreen));
            car.SetMass(200);
            //car.Translate(0, 3.76f, 0);
            car.SetCollisionShape(new BoxShape(0.5f, 0.5f, 0.5f));
            car.CreateRigidBody(new Vector3(0, -25, 0), true);
            car.PhysicalBody.SetSleepingThresholds(0, 0);
            car.PhysicalBody.ContactProcessingThreshold = 0;
            car.PhysicalBody.CcdMotionThreshold = 0;
            CurrentCar = car;
            World.Root.Add(car);

            GLThread.OnUpdate += (o, e) =>
            {
                redConeLight.SetPosition(car.GetPosition() + new Vector3(0, 15, 0));
            };

            var shape = new SphereShape(0.5f);
            //var shape = wheel3dInfo.GetAccurateCollisionShape();
            var wheelLF = new Mesh3d(wheel3dInfo, new GenericMaterial(Color.White));
            wheelLF.SetMass(100);
            wheelLF.Translate(1.640539f, 0.48866f, -1.94906f);
            wheelLF.SetCollisionShape(shape);
            wheelLF.CreateRigidBody();
            World.Root.Add(wheelLF);
            var wheelRF = new Mesh3d(wheel3dInfo, new GenericMaterial(Color.White));
            wheelRF.SetMass(100);
            wheelRF.Translate(1.640539f, 0.48866f, 1.94906f);
            wheelRF.SetCollisionShape(shape);
            wheelRF.CreateRigidBody();
            World.Root.Add(wheelRF);
            var wheelLR = new Mesh3d(wheel3dInfo, new GenericMaterial(Color.White));
            wheelLR.SetMass(100);
            wheelLR.Translate(-1.640539f, 0.48866f, -1.94906f);
            wheelLR.SetCollisionShape(shape);
            wheelLR.CreateRigidBody();
            World.Root.Add(wheelLR);
            var wheelRR = new Mesh3d(wheel3dInfo, new GenericMaterial(Color.White));
            wheelRR.SetMass(100);
            wheelRR.Translate(-1.640539f, 0.48866f, 1.94906f);
            wheelRR.SetCollisionShape(shape);
            wheelRR.CreateRigidBody();
            World.Root.Add(wheelRR);

            wheelLF.PhysicalBody.SetSleepingThresholds(0, 0);
            wheelLF.PhysicalBody.ContactProcessingThreshold = 0;
            wheelLF.PhysicalBody.CcdMotionThreshold = 0;

            wheelRF.PhysicalBody.SetSleepingThresholds(0, 0);
            wheelRF.PhysicalBody.ContactProcessingThreshold = 0;
            wheelRF.PhysicalBody.CcdMotionThreshold = 0;

            wheelLR.PhysicalBody.SetSleepingThresholds(0, 0);
            wheelLR.PhysicalBody.ContactProcessingThreshold = 0;
            wheelLR.PhysicalBody.CcdMotionThreshold = 0;

            wheelLR.PhysicalBody.SetSleepingThresholds(0, 0);
            wheelLR.PhysicalBody.ContactProcessingThreshold = 0;
            wheelLR.PhysicalBody.CcdMotionThreshold = 0;

            wheelRR.PhysicalBody.SetSleepingThresholds(0, 0);
            wheelRR.PhysicalBody.ContactProcessingThreshold = 0;
            wheelRR.PhysicalBody.CcdMotionThreshold = 0;

            wheelLF.PhysicalBody.Friction = 1200;
            wheelRF.PhysicalBody.Friction = 1200;
            wheelLR.PhysicalBody.Friction = 1200;
            wheelRR.PhysicalBody.Friction = 1200;

            car.PhysicalBody.SetIgnoreCollisionCheck(wheelLF.PhysicalBody, true);
            car.PhysicalBody.SetIgnoreCollisionCheck(wheelRF.PhysicalBody, true);
            car.PhysicalBody.SetIgnoreCollisionCheck(wheelLR.PhysicalBody, true);
            car.PhysicalBody.SetIgnoreCollisionCheck(wheelRR.PhysicalBody, true);

            // location left rear x -5.27709 y 1.56474 z -3.13906
            // location right rear x -5.27709 y 1.56474 z 3.13906
            // location left front x 5.500539 y 1.56474 z -3.13906
            // location right front x 5.500539 y 1.56474 z 3.13906
            //public HingeConstraint(RigidBody rigidBodyA, RigidBody rigidBodyB, Vector3 pivotInA, Vector3 pivotInB, Vector3 axisInA, Vector3 axisInB);

            var frontAxis = new HingeConstraint(wheelLF.PhysicalBody, wheelRF.PhysicalBody,
                new Vector3(1.640539f, 0.48866f, 1.94906f), new Vector3(1.640539f, 0.48866f, -1.94906f), Vector3.UnitZ, Vector3.UnitZ);

            var rearAxis = new HingeConstraint(wheelLR.PhysicalBody, wheelRR.PhysicalBody,
                new Vector3(-1.640539f, 0.48866f, 1.94906f), new Vector3(-1.640539f, 0.48866f, -1.94906f), Vector3.UnitZ, Vector3.UnitZ);

            var centerAxis1 = new HingeConstraint(car.PhysicalBody, wheelLF.PhysicalBody,
                new Vector3(1.640539f, -0.48866f, -1.94906f), new Vector3(0), Vector3.UnitZ, Vector3.UnitZ);
            var centerAxis2 = new HingeConstraint(car.PhysicalBody, wheelRF.PhysicalBody,
                new Vector3(1.640539f, -0.48866f, 1.94906f), new Vector3(0), Vector3.UnitZ, Vector3.UnitZ);

            var centerAxis3 = new HingeConstraint(car.PhysicalBody, wheelLR.PhysicalBody,
                new Vector3(-1.640539f, -0.48866f, 1.94906f), new Vector3(0), Vector3.UnitZ, Vector3.UnitZ);
            var centerAxis4 = new HingeConstraint(car.PhysicalBody, wheelRR.PhysicalBody,
                new Vector3(-1.640539f, -0.48866f, -1.94906f), new Vector3(0), Vector3.UnitZ, Vector3.UnitZ);

            centerAxis1.SetLimit(0, 10, 0, 0, 0);
            centerAxis2.SetLimit(0, 10, 0, 0, 0);
            centerAxis3.SetLimit(0, 10, 0, 0, 0);
            centerAxis4.SetLimit(0, 10, 0, 0, 0);

            //World.Root.PhysicalWorld.AddConstraint(frontAxis);
            // World.Root.PhysicalWorld.AddConstraint(rearAxis);
              //  centerAxis1.SetLimit(0, 0.01f);
               // centerAxis2.SetLimit(0, 0.01f);
            //centerAxis3.SetLimit(0, 0.01f);
            //centerAxis4.SetLimit(0, 0.01f);
            World.Root.PhysicalWorld.AddConstraint(centerAxis1);
            World.Root.PhysicalWorld.AddConstraint(centerAxis2);
            World.Root.PhysicalWorld.AddConstraint(centerAxis3);
            World.Root.PhysicalWorld.AddConstraint(centerAxis4);

            GLThread.OnKeyDown += (object sender, OpenTK.Input.KeyboardKeyEventArgs e) =>
            {
                if(e.Key == OpenTK.Input.Key.R)
                {
                    car.SetOrientation(Quaternion.Identity);
                }
                if(e.Key == OpenTK.Input.Key.Space)
                {
                    centerAxis1.EnableMotor = false;
                    centerAxis2.EnableMotor = false;
                }
                if(e.Key == OpenTK.Input.Key.Up)
                {
                    centerAxis1.EnableMotor = true;
                    centerAxis1.EnableAngularMotor(true, -100.0f, 10.0f);
                    centerAxis2.EnableMotor = true;
                    centerAxis2.EnableAngularMotor(true, -100.0f, 10.0f);
                }
                if(e.Key == OpenTK.Input.Key.Down)
                {

                    centerAxis1.EnableMotor = true;
                    centerAxis1.EnableAngularMotor(true, 100.0f, 6.0f);
                    centerAxis2.EnableMotor = true;
                    centerAxis2.EnableAngularMotor(true, 100.0f, 6.0f);
                }
                if(e.Key == OpenTK.Input.Key.Left)
                {
                    float angle = 0.6f / (car.PhysicalBody.LinearVelocity.Length + 1.0f);
                    centerAxis3.SetFrames(Matrix4.CreateRotationY(angle) * Matrix4.CreateTranslation(new Vector3(-1.640539f, -0.48866f, 1.94906f)), Matrix4.CreateTranslation(new Vector3(0)));
                    centerAxis4.SetFrames(Matrix4.CreateRotationY(angle) * Matrix4.CreateTranslation(new Vector3(-1.640539f, -0.48866f, -1.94906f)), Matrix4.CreateTranslation(new Vector3(0)));
                    //centerAxis3.SetAxis(new Vector3(1, 0, 1));
                    //centerAxis4.SetAxis(new Vector3(1, 0, 1));
                }
                if(e.Key == OpenTK.Input.Key.Right)
                {
                    float angle = 0.6f / (car.PhysicalBody.LinearVelocity.Length + 1.0f);
                    centerAxis3.SetFrames(Matrix4.CreateRotationY(-angle) * Matrix4.CreateTranslation(new Vector3(-1.640539f, -0.48866f, 1.94906f)), Matrix4.CreateTranslation(new Vector3(0)));
                    centerAxis4.SetFrames(Matrix4.CreateRotationY(-angle) * Matrix4.CreateTranslation(new Vector3(-1.640539f, -0.48866f, -1.94906f)), Matrix4.CreateTranslation(new Vector3(0)));
                    //centerAxis3.SetAxis(new Vector3(-1, 0, 1));
                    //centerAxis4.SetAxis(new Vector3(-1, 0, 1));
                }
            };
            GLThread.OnKeyUp += (object sender, OpenTK.Input.KeyboardKeyEventArgs e) =>
            {
                if(e.Key == OpenTK.Input.Key.Up)
                {

                    centerAxis1.EnableMotor = false;
                    centerAxis2.EnableMotor = false;
                }
                if(e.Key == OpenTK.Input.Key.Down)
                {

                    centerAxis1.EnableMotor = false;
                    centerAxis2.EnableMotor = false;
                }
                if(e.Key == OpenTK.Input.Key.Left)
                {
                    centerAxis3.SetFrames(Matrix4.CreateTranslation(new Vector3(-1.640539f, -0.48866f, 1.94906f)), Matrix4.CreateTranslation(new Vector3(0)));
                    centerAxis4.SetFrames(Matrix4.CreateTranslation(new Vector3(-1.640539f, -0.48866f, -1.94906f)), Matrix4.CreateTranslation(new Vector3(0)));
                    //centerAxis3.SetAxis(new Vector3(0, 0, 1));
                    //centerAxis4.SetAxis(new Vector3(0, 0, 1));
                }
                if(e.Key == OpenTK.Input.Key.Right)
                {
                    centerAxis3.SetFrames( Matrix4.CreateTranslation(new Vector3(-1.640539f, -0.48866f, 1.94906f)), Matrix4.CreateTranslation(new Vector3(0)));
                    centerAxis4.SetFrames(Matrix4.CreateTranslation(new Vector3(-1.640539f, -0.48866f, -1.94906f)), Matrix4.CreateTranslation(new Vector3(0)));
                    //centerAxis3.SetAxis(new Vector3(0, 0, 1));
                    //centerAxis4.SetAxis(new Vector3(0, 0, 1));
                }
            };
        }