protected override CollisionShape CreateShape() { //Cylinder are around Z axis in vvvv //If we need Y/X axis, we can rotate, so i use Z CollisionShape shape = new CylinderShapeZ(this.hw,this.hh,this.hd); //BvhTriangleMeshShape bvh ;//= new BvhTriangleMeshShape(new StridingMeshInterface(), //bvh. return shape; }
protected override void OnInitializePhysics() { // collision configuration contains default setup for memory, collision setup CollisionConf = new DefaultCollisionConfiguration(); // Use the default collision dispatcher. For parallel processing you can use a diffent dispatcher. Dispatcher = new CollisionDispatcher(CollisionConf); VoronoiSimplexSolver simplex = new VoronoiSimplexSolver(); MinkowskiPenetrationDepthSolver pdSolver = new MinkowskiPenetrationDepthSolver(); Convex2DConvex2DAlgorithm.CreateFunc convexAlgo2d = new Convex2DConvex2DAlgorithm.CreateFunc(simplex, pdSolver); Dispatcher.RegisterCollisionCreateFunc(BroadphaseNativeType.Convex2DShape, BroadphaseNativeType.Convex2DShape, convexAlgo2d); Dispatcher.RegisterCollisionCreateFunc(BroadphaseNativeType.Box2DShape, BroadphaseNativeType.Convex2DShape, convexAlgo2d); Dispatcher.RegisterCollisionCreateFunc(BroadphaseNativeType.Convex2DShape, BroadphaseNativeType.Box2DShape, convexAlgo2d); Dispatcher.RegisterCollisionCreateFunc(BroadphaseNativeType.Box2DShape, BroadphaseNativeType.Box2DShape, new Box2DBox2DCollisionAlgorithm.CreateFunc()); Broadphase = new DbvtBroadphase(); // the default constraint solver. Solver = new SequentialImpulseConstraintSolver(); World = new DiscreteDynamicsWorld(Dispatcher, Broadphase, Solver, CollisionConf); World.Gravity = new Vector3(0, -10, 0); // create a few basic rigid bodies CollisionShape groundShape = new BoxShape(150, 7, 150); CollisionShapes.Add(groundShape); RigidBody ground = LocalCreateRigidBody(0, Matrix.Identity, groundShape); ground.UserObject = "Ground"; // create a few dynamic rigidbodies // Re-using the same collision is better for memory usage and performance float u = 0.96f; Vector3[] points = { new Vector3(0, u, 0), new Vector3(-u, -u, 0), new Vector3(u, -u, 0) }; ConvexShape childShape0 = new BoxShape(1, 1, Depth); ConvexShape colShape = new Convex2DShape(childShape0); ConvexShape childShape1 = new ConvexHullShape(points); ConvexShape colShape2 = new Convex2DShape(childShape1); ConvexShape childShape2 = new CylinderShapeZ(1, 1, Depth); ConvexShape colShape3 = new Convex2DShape(childShape2); CollisionShapes.Add(colShape); CollisionShapes.Add(colShape2); CollisionShapes.Add(colShape3); CollisionShapes.Add(childShape0); CollisionShapes.Add(childShape1); CollisionShapes.Add(childShape2); colShape.Margin = 0.03f; float mass = 1.0f; Vector3 localInertia = colShape.CalculateLocalInertia(mass); Matrix startTransform; Vector3 x = new Vector3(-ArraySizeX, 8, -20); Vector3 y = Vector3.Zero; Vector3 deltaX = new Vector3(1, 2, 0); Vector3 deltaY = new Vector3(2, 0, 0); int i, j; for (i = 0; i < ArraySizeY; i++) { y = x; for (j = 0; j < ArraySizeX; j++) { startTransform = Matrix.Translation(y - new Vector3(-10, 0, 0)); //using motionstate is recommended, it provides interpolation capabilities, and only synchronizes 'active' objects DefaultMotionState myMotionState = new DefaultMotionState(startTransform); RigidBodyConstructionInfo rbInfo; switch (j % 3) { case 0: rbInfo = new RigidBodyConstructionInfo(mass, myMotionState, colShape, localInertia); break; case 1: rbInfo = new RigidBodyConstructionInfo(mass, myMotionState, colShape3, localInertia); break; default: rbInfo = new RigidBodyConstructionInfo(mass, myMotionState, colShape2, localInertia); break; } RigidBody body = new RigidBody(rbInfo); rbInfo.Dispose(); //body.ActivationState = ActivationState.IslandSleeping; body.LinearFactor = new Vector3(1, 1, 0); body.AngularFactor = new Vector3(0, 0, 1); World.AddRigidBody(body); y += deltaY; } x += deltaX; } }
/* public CollisionShape CreateConvexTriangleMeshShape(StridingMeshInterface trimesh) { return btWorldImporter_createConvexTriangleMeshShape(_native, trimesh._native); } */ public CollisionShape CreateCylinderShapeZ(float radius, float height) { CylinderShapeZ shape = new CylinderShapeZ(radius, radius, height); _allocatedCollisionShapes.Add(shape); return shape; }