DrawParticles Class Reference

A class to draw/create particles based on simple shaped. More...

Detailed Description

A class to draw/create particles based on simple shaped.

Draw box example

 
    size_t sz[] = {23,27,20};
 
    Box<3,double> domain({-1.2,0.5,-0.6},{1.0,3.1,1.3});
    Box<3,double> sub_domain({-0.15,0.75,0.15},{1.05,1.15,1.05});
    Box<3,double> sub_real({-0.1,0.80,0.2},{1.0,1.1,1.0});
 
    size_t sz_sub[] = {12,4,9};
 
    // Boundary conditions
    size_t bc[3]={NON_PERIODIC,NON_PERIODIC,NON_PERIODIC};
 
    // ghost, big enough to contain the interaction radius
    Ghost<3,double> ghost(0.01);
 
    vector_dist<3,double,aggregate<double>> vd(0,domain,bc,ghost);
 
    auto p = DrawParticles::DrawBox(vd,sz,domain,sub_domain);
 
    size_t cnt = 0;
 
    bool good = true;
    while (p.isNext())
    {
        vd.add();
 
        vd.getLastPos()[0] = p.get().get(0);
        vd.getLastPos()[1] = p.get().get(1);
        vd.getLastPos()[2] = p.get().get(2);
 
        good &= sub_domain.isInside(p.get());
 
        cnt++;
 
        ++p;
    }
 

Definition at line 22 of file DrawParticles.hpp.

#include <DrawParticles.hpp>

Static Public Member Functions
template<unsigned int dim, typename T , typename vd_type >
static PointIteratorSkin< dim, T, typename vd_type::Decomposition_type >	DrawSkin (vd_type &vd, size_t(&sz)[dim], Box< dim, T > &domain, Box< dim, T > &sub_A, Box< dim, T > &sub_B)
	Draw particles in a box B excluding the area of a second box A (B - A)
template<unsigned int dim, typename T , typename vd_type >
static PointIteratorSkin< dim, T, typename vd_type::Decomposition_type >	DrawSkin (vd_type &vd, size_t(&sz)[dim], Box< dim, T > &domain, openfpm::vector< Box< dim, T > > &sub_A, Box< dim, T > &sub_B)
	Draw particles in a box B excluding the areas of an array of boxes A_n.
template<unsigned int dim, typename T , typename vd_type >
static PointIterator< dim, T, typename vd_type::Decomposition_type >	DrawBox (vd_type &vd, size_t(&sz)[dim], Box< dim, T > &domain, Box< dim, T > &sub)
	Draw particles in a box.

Member Function Documentation

DrawBox()

template<unsigned int dim, typename T , typename vd_type >

static PointIterator< dim, T, typename vd_type::Decomposition_type > DrawParticles::DrawBox ( vd_type &  vd, size_t(&)  sz[dim], Box< dim, T > &  domain, Box< dim, T > &  sub  )

inlinestatic

Draw particles in a box.

The function return an iterator over particles defined on a virtual grid in the simulation domain.

Parameters

vd	particles where we are creating the particles
sz	indicate the grid size of the virtual grid.
domain	Domain where the virtual grid is defined (Must match the domain of vd)
sub	box contained in domain that define where the particle iterator must iterate, particles are placed strictly inside this box

Note

Suppose to have a simulation domain of 1.5 on x and we use sz = 16. Consider now to have particles with spacing 0.1 on x. if we define a sub box that on extend from 0.65 to 0.95 the first fluid particle is at 0.70 and the last is at 0.90

Returns

an iterator to the selected particles

Definition at line 123 of file DrawParticles.hpp.

DrawSkin() [1/2]

template<unsigned int dim, typename T , typename vd_type >

static PointIteratorSkin< dim, T, typename vd_type::Decomposition_type > DrawParticles::DrawSkin ( vd_type &  vd, size_t(&)  sz[dim], Box< dim, T > &  domain, Box< dim, T > &  sub_A, Box< dim, T > &  sub_B  )

inlinestatic

Draw particles in a box B excluding the area of a second box A (B - A)

The function return an iterator over particles defined on a virtual grid in the simulation domain.

Parameters

vd	particles where we are creating the particles
sz	indicate the grid size of the virtual grid.
domain	Domain where the virtual grid is defined (Must match the domain of vd)
sub_B	box contained in domain that define where the particle iterator must iterate, particles are placed strictly inside this box
sub_A	box contained in the domain that define where the particle iterator should not iterate (excluding area)

Note

Suppose to have a simulation domain of 1.5 on x and we use sz = 16. Consider now to have particles with spacing 0.1 on x. if we define a sub_A that on extend from 0.65 to 0.95 the first fluid particle is at 0.70 and the last is at 0.90

Returns

an iterator to the selected particles

Definition at line 48 of file DrawParticles.hpp.

DrawSkin() [2/2]

template<unsigned int dim, typename T , typename vd_type >

static PointIteratorSkin< dim, T, typename vd_type::Decomposition_type > DrawParticles::DrawSkin ( vd_type &  vd, size_t(&)  sz[dim], Box< dim, T > &  domain, openfpm::vector< Box< dim, T > > &  sub_A, Box< dim, T > &  sub_B  )

inlinestatic

Draw particles in a box B excluding the areas of an array of boxes A_n.

The function return an iterator over particles defined on a virtual grid in the simulation domain.

Parameters

vd	particles where we are creating the particles
sz	indicate the grid size of the virtual grid.
domain	Domain where the virtual grid is defined (Must match the domain of vd)
sub_B	box contained in domain that define where the particle iterator must iterate, particles are placed strictly inside this box
sub_A	array of boxes contained in the domain that define where the particle iterator should not iterate (excluding areas)

Note

Suppose to have a simulation domain of 1.5 on x and we use sz = 16. Consider now to have particles with spacing 0.1 on x. if we define a sub_A that on extend from 0.65 to 0.95 the first fluid particle is at 0.70 and the last is at 0.90

Returns

an iterator to the selected particles

Definition at line 85 of file DrawParticles.hpp.

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The documentation for this class was generated from the following file:

• openfpm_numerics/src/Draw/DrawParticles.hpp