Surface mesh shape

Data Types
type	mod_shape_surface_mesh::t_distance_list
	Distance list Store distances. Act as a z-buffer. More...
type	mod_shape_surface_mesh::t_shape_surface_mesh
	Surface mesh shape. More...

Functions/Subroutines
subroutine	mod_shape_surface_mesh::copy_shape_surface_mesh (shape, copy)
	Copy the surface mesh. More...
subroutine	mod_shape_surface_mesh::shape_surface_mesh_get_samples_inside (shape, i, j, k, n, n_samples, samples)
	Check if a given number of point lies in a surface mesh. More...
pure subroutine	mod_shape_surface_mesh::shape_surface_mesh_get_distance (shape, point, distance, direction)
	Compute the signed distance and the signed direction from a point to the surface mesh. More...

Detailed Description

Function/Subroutine Documentation

copy_shape_surface_mesh()

subroutine mod_shape_surface_mesh::copy_shape_surface_mesh	(	class(t_shape_surface_mesh), intent(in)	shape,
		class(t_shape), allocatable	copy
	)

Parameters

[in]	shape	surface mesh shape
[out]	copy	copied surface mesh shape

shape_surface_mesh_get_distance()

pure subroutine mod_shape_surface_mesh::shape_surface_mesh_get_distance	(	class(t_shape_surface_mesh), intent(in)	shape,
		double precision, dimension(3), intent(in)	point,
		double precision, intent(out)	distance,
		double precision, dimension(3), intent(out)	direction
	)

If the point lies inside the surface mesh, the distance is negative and the direction points to the closest point on the surface mesh. If the point lies outiside the surface mesh, the distance is positive and the direction points in the opposite direction to the closest point on the surface mesh.

Parameters

[in]	shape	surface mesh shape
[in]	point	any point
[out]	distance	signed closest distance from the point to the surface mesh
[out]	direction	signed direction from the point to the closest point on the surface mesh

shape_surface_mesh_get_samples_inside()

subroutine mod_shape_surface_mesh::shape_surface_mesh_get_samples_inside	(	class(t_shape_surface_mesh), intent(inout)	shape,
		integer, intent(in)	i,
		integer, intent(in)	j,
		integer, intent(in)	k,
		integer, intent(in)	n,
		integer, intent(in)	n_samples,
		integer, dimension(:,:,:), intent(inout)	samples
	)

Sample a cell of coordinates (i,j,k) with (2*n_samples+1)^d samples, where d denotes the dimension of the cell. Return a integer array samples containing the value n where the sample is inside the shape.

n_samples is called the sampling level and can take its value in range [0,∞].

Example of sampling for various sampling level:

    n_samples = 0   n_samples = 1   n_samples = 2
      ┏━━━━━━━┓       ×━━━×━━━×       ×━×━×━×━×
      ┃       ┃       ┃       ┃       × × × × ×
      ┃   ×   ┃       ×   ×   ×       × × × × ×    ...
      ┃       ┃       ┃       ┃       × × × × ×
      ┗━━━━━━━┛       ×━━━×━━━×       ×━×━×━×━×

Parameters

[in,out]	shape	surface mesh shape
[in]	i,j,k	coordinates of the cell
[in]	n	value to put where the sample is inside the surface mesh
[in]	n_samples	sampling level (see description)
[in,out]	samples	array of the (2*n_sammples+1)^d samples