Union of two shapes. More...
Public Member Functions | |
procedure | initialize (shape) |
Initialize the shape. | |
procedure | copy (shape, copy) |
Copy the shape. | |
procedure | is_inside (shape, point) |
Check if a point lies inside the shape. | |
procedure | get_samples_inside (shape, i, j, k, n, n_samples, samples) |
Check if a given number of point lies in a shape. | |
procedure | get_distance (shape, point, distance, direction) |
Compute the distance and the direction from a point to the shape. | |
procedure | ray_trace (shape, ray, has_normal, intersection_list) |
Compute the intersection between the shape and a ray. | |
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procedure(abs_initialize_shape), deferred | initialize (shape) |
Initialize the shape. | |
procedure(abs_copy_shape), deferred | copy (shape, copy) |
Copy the shape. | |
procedure(abs_shape_is_inside), deferred | is_inside (shape, point) |
Check if a point lies inside the shape. | |
procedure(abs_shape_get_samples_inside), deferred | get_samples_inside (shape, i, j, k, n, n_samples, samples) |
Check if a given number of point lies in a shape. | |
procedure(abs_shape_get_distance), deferred | get_distance (shape, point, distance, direction) |
Compute the distance and the direction from a point to the shape. | |
procedure(abs_shape_ray_trace), deferred | ray_trace (shape, ray, has_normal, intersection_list) |
Compute the intersection between the shape and a ray. | |
Public Attributes | |
class(t_shape), allocatable | shape_1 |
First shape. | |
class(t_shape), allocatable | shape_2 |
Second shape. | |
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integer | dimension = 2 |
Dimension of the shape. | |
type(t_cg_transformation) | transformation |
Transformation matrix. | |
logical | is_reversed = .false. |
Swap interior/exterior sides of the shape. | |
Union of two shapes.
procedure mod_shape_constructive_solid_geometry::t_shape_union::copy | ( | class(t_shape_union), intent(in) | shape, |
class(t_shape), allocatable | copy ) |
Copy the shape.
[in] | shape | union shape |
[out] | copy | copied union |
procedure mod_shape_constructive_solid_geometry::t_shape_union::get_distance | ( | class(t_shape_union), intent(in) | shape, |
double precision, dimension(3), intent(in) | point, | ||
double precision, intent(out) | distance, | ||
double precision, dimension(3), intent(out) | direction ) |
Compute the distance and the direction from a point to the shape.
If the point lies inside the union, the distance is negative and the direction points to the closest point on the union. If the point lies outiside the union, the distance is positive and the direction points in the opposite direction to the closest point on the union.
[in] | shape | union shape |
[in] | point | any point |
[out] | distance | signed closest distance from the point to the union |
[out] | direction | signed direction from the point to the closest point on the union |
procedure mod_shape_constructive_solid_geometry::t_shape_union::get_samples_inside | ( | class(t_shape_union), 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 ) |
Check if a given number of point lies in a shape.
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 !! ┏━━━━━━━┓ ×━━━×━━━× ×━×━×━×━× !! ┃ ┃ ┃ ┃ × × × × × !! ┃ × ┃ × × × × × × × × ... !! ┃ ┃ ┃ ┃ × × × × × !! ┗━━━━━━━┛ ×━━━×━━━× ×━×━×━×━× !!
[in,out] | shape | union shape |
[in] | i,j,k | coordinates of the cell |
[in] | n | value to put where the sample is inside the union |
[in] | n_samples | sampling level (see description) |
[in,out] | samples | array of the (2*n_sammples+1)^d samples |
procedure mod_shape_constructive_solid_geometry::t_shape_union::initialize | ( | class(t_shape_union), intent(inout) | shape | ) |
Initialize the shape.
[in,out] | shape | union shape |
procedure mod_shape_constructive_solid_geometry::t_shape_union::is_inside | ( | class(t_shape_union), intent(in) | shape, |
double precision, dimension(3), intent(in) | point ) |
Check if a point lies inside the shape.
[in] | shape | union shape |
[in] | point | any point |
procedure mod_shape_constructive_solid_geometry::t_shape_union::ray_trace | ( | class(t_shape_union), intent(in) | shape, |
type(t_ray), intent(in) | ray, | ||
logical, intent(in) | has_normal, | ||
type(t_intersection_list), intent(inout) | intersection_list ) |
Compute the intersection between the shape and a ray.
[in] | shape | union shape |
[in] | ray | ray to intersect the union |
[in] | has_normal | list of intersections between the ray and the union |
[in,out] | intersection_list | list of intersections between the ray and the union |