#include "collision.hpp"
#include "BoxGeometry.hpp"
#include "Particle.hpp"
#include "bonded_interactions/bonded_interaction_data.hpp"
#include "cell_system/Cell.hpp"
#include "cell_system/CellStructure.hpp"
#include "communication.hpp"
#include "errorhandling.hpp"
#include "nonbonded_interactions/nonbonded_interaction_data.hpp"
#include "system/System.hpp"
#include "virtual_sites.hpp"
#include <utils/Vector.hpp>
#include <utils/constants.hpp>
#include <utils/math/sqr.hpp>
#include <utils/mpi/all_compare.hpp>
#include <utils/mpi/gather_buffer.hpp>
#include <boost/mpi/collectives.hpp>
#include <boost/serialization/serialization.hpp>
#include <algorithm>
#include <array>
#include <cmath>
#include <stdexcept>
#include <string>
#include <utility>
#include <vector>

Include dependency graph for collision.cpp:

Classes
struct	CollisionPair
	Data type holding the info about a single collision. More...

Namespaces
namespace	boost

namespace	boost::serialization

namespace	anonymous_namespace{collision.cpp}

Functions
template<typename Archive >
void	boost::serialization::serialize (Archive &ar, CollisionPair &c, const unsigned int)

Particle &	anonymous_namespace{collision.cpp}::get_part (CellStructure &cell_structure, int id)

static bool	bind_centers ()
	Return true if a bond between the centers of the colliding particles needs to be placed.

static int	get_bond_num_partners (int bond_id)

void	prepare_local_collision_queue ()

void	queue_collision (const int part1, const int part2)
	Add the collision between the given particle ids to the collision queue.

static auto const &	glue_to_surface_calc_vs_pos (Particle const &p1, Particle const &p2, BoxGeometry const &box_geo, Utils::Vector3d &pos)
	Calculate position of vs for GLUE_TO_SURFACE mode.

static void	bind_at_point_of_collision_calc_vs_pos (Particle const &p1, Particle const &p2, BoxGeometry const &box_geo, Utils::Vector3d &pos1, Utils::Vector3d &pos2)

static void	coldet_do_three_particle_bond (Particle &p, Particle const &p1, Particle const &p2, BoxGeometry const &box_geo)

static void	place_vs_and_relate_to_particle (CellStructure &cell_structure, BoxGeometry const &box_geo, double const min_global_cut, int const current_vs_pid, Utils::Vector3d const &pos, int const relate_to)

static void	bind_at_poc_create_bond_between_vs (CellStructure &cell_structure, int const current_vs_pid, CollisionPair const &c)

static void	glue_to_surface_bind_part_to_vs (Particle const const p1, Particle const const p2, int const vs_pid_plus_one, CollisionPair const &, CellStructure &cell_structure)

std::vector< CollisionPair >	gather_global_collision_queue ()

static void	three_particle_binding_do_search (Cell *basecell, Particle &p1, Particle &p2, BoxGeometry const &box_geo)

static void	three_particle_binding_domain_decomposition (CellStructure &cell_structure, BoxGeometry const &box_geo, std::vector< CollisionPair > const &gathered_queue)

void	handle_collisions (CellStructure &cell_structure)
	Handle the collisions recorded in the queue.

Variables
static std::vector< CollisionPair >	local_collision_queue
	During force calculation, colliding particles are recorded in the queue. The queue is processed after force calculation, when it is safe to add particles.

Collision_parameters	collision_params
	Parameters for collision detection.

Function Documentation

◆ bind_at_poc_create_bond_between_vs()

static void bind_at_poc_create_bond_between_vs	(	CellStructure &	cell_structure,
		int const	current_vs_pid,
		CollisionPair const &	c
	)

static

Definition at line 362 of file collision.cpp.

References Collision_parameters::bond_vs, collision_params, get_bond_num_partners(), CellStructure::get_local_particle(), CollisionPair::pp1, and CollisionPair::pp2.

Referenced by handle_collisions().

◆ bind_at_point_of_collision_calc_vs_pos()

static void bind_at_point_of_collision_calc_vs_pos	(	Particle const &	p1,
		Particle const &	p2,
		BoxGeometry const &	box_geo,
		Utils::Vector3d &	pos1,
		Utils::Vector3d &	pos2
	)

static

Definition at line 268 of file collision.cpp.

References collision_params, BoxGeometry::get_mi_vector(), Particle::pos(), and Collision_parameters::vs_placement.

Referenced by handle_collisions().

◆ bind_centers()

static bool bind_centers ( )

static

Return true if a bond between the centers of the colliding particles needs to be placed.

At this point, all modes need this.

Definition at line 91 of file collision.cpp.

References collision_params, GLUE_TO_SURF, Collision_parameters::mode, and OFF.

Referenced by handle_collisions().

◆ coldet_do_three_particle_bond()

static void coldet_do_three_particle_bond	(	Particle &	p,
		Particle const &	p1,
		Particle const &	p2,
		BoxGeometry const &	box_geo
	)

static

Definition at line 280 of file collision.cpp.

References Collision_parameters::bond_three_particles, Particle::bonds(), collision_params, Collision_parameters::distance, BoxGeometry::get_mi_vector(), Particle::id(), Utils::pi(), Particle::pos(), Collision_parameters::three_particle_angle_resolution, and TINY_COS_VALUE.

Referenced by three_particle_binding_do_search().

◆ gather_global_collision_queue()

std::vector< CollisionPair > gather_global_collision_queue ( )

Definition at line 408 of file collision.cpp.

References comm_cart, Utils::Mpi::gather_buffer(), local_collision_queue, and res.

Referenced by handle_collisions().

◆ get_bond_num_partners()

static int get_bond_num_partners ( int bond_id )

static

Definition at line 100 of file collision.cpp.

References BondedInteractionsMap::at(), bonded_ia_params, and number_of_partners().

Referenced by bind_at_poc_create_bond_between_vs(), and Collision_parameters::initialize().

◆ glue_to_surface_bind_part_to_vs()

static void glue_to_surface_bind_part_to_vs	(	Particle const *const	p1,
		Particle const *const	p2,
		int const	vs_pid_plus_one,
		CollisionPair const &	,
		CellStructure &	cell_structure
	)

static

Definition at line 387 of file collision.cpp.

References Collision_parameters::bond_vs, Particle::bonds(), collision_params, anonymous_namespace{collision.cpp}::get_part(), Particle::id(), Collision_parameters::part_type_after_glueing, and Particle::type().

Referenced by handle_collisions().

◆ glue_to_surface_calc_vs_pos()

static auto const & glue_to_surface_calc_vs_pos	(	Particle const &	p1,
		Particle const &	p2,
		BoxGeometry const &	box_geo,
		Utils::Vector3d &	pos
	)

static

Calculate position of vs for GLUE_TO_SURFACE mode.

Returns id of particle to bind vs to.

Definition at line 243 of file collision.cpp.

References collision_params, Collision_parameters::dist_glued_part_to_vs, BoxGeometry::get_mi_vector(), Collision_parameters::part_type_to_attach_vs_to, Collision_parameters::part_type_to_be_glued, Particle::pos(), pos, and Particle::type().

Referenced by handle_collisions().

◆ handle_collisions()

void handle_collisions ( CellStructure & cell_structure )

Handle the collisions recorded in the queue.

Definition at line 482 of file collision.cpp.

References Utils::Mpi::all_compare(), bind_at_poc_create_bond_between_vs(), bind_at_point_of_collision_calc_vs_pos(), bind_centers(), BIND_THREE_PARTICLES, BIND_VS, Collision_parameters::bond_centers, Particle::bonds(), collision_params, comm_cart, Cells::DATA_PART_BONDS, Cells::DATA_PART_PROPERTIES, gather_global_collision_queue(), CellStructure::get_local_particle(), CellStructure::get_max_local_particle_id(), anonymous_namespace{collision.cpp}::get_part(), System::get_system(), GLUE_TO_SURF, glue_to_surface_bind_part_to_vs(), glue_to_surface_calc_vs_pos(), Particle::id(), Particle::is_ghost(), local_collision_queue, Collision_parameters::mode, Collision_parameters::part_type_after_glueing, Collision_parameters::part_type_to_be_glued, place_vs_and_relate_to_particle(), pos, Cells::RESORT_GLOBAL, Particle::set_can_rotate_all_axes(), CellStructure::set_resort_particles(), three_particle_binding_domain_decomposition(), Particle::type(), and CellStructure::update_ghosts_and_resort_particle().

Referenced by System::System::integrate().

◆ place_vs_and_relate_to_particle()

static void place_vs_and_relate_to_particle	(	CellStructure &	cell_structure,
		BoxGeometry const &	box_geo,
		double const	min_global_cut,
		int const	current_vs_pid,
		Utils::Vector3d const &	pos,
		int const	relate_to
	)

static

Definition at line 347 of file collision.cpp.

References CellStructure::add_particle(), collision_params, anonymous_namespace{collision.cpp}::get_part(), pos, Collision_parameters::vs_particle_type, and vs_relate_to().

Referenced by handle_collisions().

◆ prepare_local_collision_queue()

void prepare_local_collision_queue ( )

Definition at line 234 of file collision.cpp.

References local_collision_queue.

Referenced by System::System::calculate_forces().

◆ queue_collision()

void queue_collision	(	const int	part1,
		const int	part2
	)

Add the collision between the given particle ids to the collision queue.

Definition at line 236 of file collision.cpp.

References local_collision_queue.

Referenced by detect_collision().

◆ three_particle_binding_do_search()

static void three_particle_binding_do_search	(	Cell *	basecell,
		Particle &	p1,
		Particle &	p2,
		BoxGeometry const &	box_geo
	)

static

Definition at line 417 of file collision.cpp.

References Neighbors< CellRef >::all(), coldet_do_three_particle_bond(), Particle::id(), Particle::is_ghost(), and Cell::neighbors().

Referenced by three_particle_binding_domain_decomposition().

◆ three_particle_binding_domain_decomposition()

static void three_particle_binding_domain_decomposition	(	CellStructure &	cell_structure,
		BoxGeometry const &	box_geo,
		std::vector< CollisionPair > const &	gathered_queue
	)

static

Definition at line 458 of file collision.cpp.

References CellStructure::find_current_cell(), CellStructure::get_local_particle(), and three_particle_binding_do_search().

Referenced by handle_collisions().

Variable Documentation

◆ collision_params

Collision_parameters collision_params

Parameters for collision detection.

Definition at line 73 of file collision.cpp.

Referenced by bind_at_poc_create_bond_between_vs(), bind_at_point_of_collision_calc_vs_pos(), bind_centers(), System::System::calculate_forces(), coldet_do_three_particle_bond(), collision_detection_cutoff(), ScriptInterface::CollisionDetection::CollisionDetection::CollisionDetection(), detect_collision(), ScriptInterface::CollisionDetection::CollisionDetection::do_call_method(), System::System::get_global_ghost_flags(), glue_to_surface_bind_part_to_vs(), glue_to_surface_calc_vs_pos(), glue_to_surface_criterion(), handle_collisions(), Collision_parameters::initialize(), and place_vs_and_relate_to_particle().

◆ local_collision_queue

std::vector<CollisionPair> local_collision_queue

static

During force calculation, colliding particles are recorded in the queue. The queue is processed after force calculation, when it is safe to add particles.

Definition at line 70 of file collision.cpp.

Referenced by gather_global_collision_queue(), handle_collisions(), prepare_local_collision_queue(), and queue_collision().

Classes

Namespaces

Functions

Variables

Function Documentation

◆ bind_at_poc_create_bond_between_vs()

◆ bind_at_point_of_collision_calc_vs_pos()

◆ bind_centers()

◆ coldet_do_three_particle_bond()

◆ gather_global_collision_queue()

◆ get_bond_num_partners()

◆ glue_to_surface_bind_part_to_vs()

◆ glue_to_surface_calc_vs_pos()

◆ handle_collisions()

◆ place_vs_and_relate_to_particle()

◆ prepare_local_collision_queue()

◆ queue_collision()

◆ three_particle_binding_do_search()

◆ three_particle_binding_domain_decomposition()

Variable Documentation

◆ collision_params

◆ local_collision_queue