| //##################################################################### |
| // Copyright 2002-2006, Robert Bridson, Ronald Fedkiw, Geoffrey Irving, Neil Molino, Eftychios Sifakis, Joseph Teran. |
| // This file is part of PhysBAM whose distribution is governed by the license contained in the accompanying file PHYSBAM_COPYRIGHT.txt. |
| //##################################################################### |
| // Class EXTERNAL_FORCES_AND_VELOCITIES |
| //##################################################################### |
| #ifndef __EXTERNAL_FORCES_AND_VELOCITIES__ |
| #define __EXTERNAL_FORCES_AND_VELOCITIES__ |
| |
| #include "../Utilities/DEBUG_UTILITIES.h" |
| |
| namespace PhysBAM |
| { |
| |
| template<class T> class ARRAY; |
| template<class T> class VECTOR_2D; |
| template<class T> class VECTOR_3D; |
| template<class T> class QUATERNION; |
| |
| template<class T, class TV> |
| class EXTERNAL_FORCES_AND_VELOCITIES |
| { |
| public: |
| bool collisions_on; |
| |
| EXTERNAL_FORCES_AND_VELOCITIES() |
| { |
| Activate_Collisions (false); |
| } |
| |
| virtual ~EXTERNAL_FORCES_AND_VELOCITIES() |
| {} |
| |
| void Activate_Collisions (const bool collisions_on_input = true) |
| { |
| collisions_on = collisions_on_input; |
| } |
| |
| // Deformable objects - multiple partitions |
| virtual void Add_External_Forces (ARRAY<TV>& F, const T time, const int id_number, const int partition_id) |
| { |
| NOT_IMPLEMENTED(); |
| } |
| virtual void Set_External_Velocities (ARRAY<TV>& V, const T time, const int id_number, const int partition_id) |
| { |
| NOT_IMPLEMENTED(); |
| } |
| virtual void Zero_Out_Enslaved_Velocity_Nodes (ARRAY<TV>& V, const T time, const int id_number, const int partition_id) |
| { |
| NOT_IMPLEMENTED(); |
| } |
| virtual void Set_External_Positions (ARRAY<TV>& X, const T time, const int id_number, const int partition_id) |
| { |
| NOT_IMPLEMENTED(); |
| } |
| virtual void Zero_Out_Enslaved_Position_Nodes (ARRAY<TV>& X, const T time, const int id_number, const int partition_id) |
| { |
| NOT_IMPLEMENTED(); |
| } |
| virtual void Update_Time_Varying_Material_Properties (const T time, const int id_number, const int partition_id) |
| { |
| NOT_IMPLEMENTED(); |
| } |
| |
| //##################################################################### |
| // Rigid bodies |
| virtual void Add_External_Forces (VECTOR_2D<T>& F, T& torque, const T time, const int id_number = 1) {} // force and torque |
| virtual void Add_External_Forces (VECTOR_3D<T>& F, VECTOR_3D<T>& torque, const T time, const int id_number = 1) {} // force and torque |
| virtual void Set_External_Velocities (VECTOR_2D<T>& V, T& omega, const T time, const int id_number = 1) {} // velocity and angular velocity |
| virtual void Set_External_Velocities (VECTOR_3D<T>& V, VECTOR_3D<T>& omega, const T time, const int id_number = 1) {} // velocity and angular velocity |
| virtual void Set_External_Position_And_Orientation (VECTOR_2D<T>& X, T& orientation, const T time, const int id_number = 1) {} // set external position and orientation |
| virtual void Set_External_Position_And_Orientation (VECTOR_3D<T>& X, QUATERNION<T>& orientation, const T time, const int id_number = 1) {} // set external position and orientation |
| // Deformable objects - single partition |
| virtual void Add_External_Forces (ARRAY<TV>& F, const T time, const int id_number = 1) {} |
| virtual void Set_External_Velocities (ARRAY<TV>& V, const T time, const int id_number = 1) {} |
| virtual void Zero_Out_Enslaved_Velocity_Nodes (ARRAY<TV>& V, const T time, const int id_number = 1) {} // or zero out components of their velocities |
| virtual void Set_External_Positions (ARRAY<TV>& X, const T time, const int id_number = 1) {} // set external positions |
| virtual void Zero_Out_Enslaved_Position_Nodes (ARRAY<TV>& X, const T time, const int id_number = 1) {} // zero out entries corresponding to external positions |
| virtual void Update_Time_Varying_Material_Properties (const T time, const int id_number = 1) {} |
| // Asynchronous |
| virtual void Add_External_Impulses (ARRAY<TV>& V, const T time, const T dt, const int id_number = 1) {} // adjust velocity with external impulses |
| virtual void Add_External_Impulse (ARRAY<TV>& V, const int node, const T time, const T dt, const int id_number = 1) {} // adjust velocity of single node with external impulse |
| //##################################################################### |
| }; |
| } |
| #endif |
