fossil_sdf

Source: src/lib/fossil_sdf.f90

Dependencies

Contents

• compute_sdf
• smooth_sdf
• segment_sdf
• gmm_fit_1d
• kmeanspp_init
• gmm_e_step
• gmm_m_step
• argsort_ascending
• cone_directions
• ortho_basis
• gmm_argmax_posterior
• data_variance
• inv_perm
• median

Variables

Name	Type	Attributes	Description
SDF_STATUS_OK	integer(kind=I4P)	parameter
SDF_STATUS_BAD_INPUT	integer(kind=I4P)	parameter
SDF_SENTINEL	real(kind=R8P)	parameter
SDF_LABEL_UNASSIGNED	integer(kind=I4P)	parameter
SDF_DEFAULT_NUM_CLUSTERS	integer(kind=I4P)	parameter
SDF_DEFAULT_NUM_RAYS	integer(kind=I4P)	parameter
SDF_DEFAULT_CONE_DEG	real(kind=R8P)	parameter
SDF_DEFAULT_SMOOTHING_LAMBDA	real(kind=R8P)	parameter
SDF_DEFAULT_SMOOTHING_ITERATIONS	integer(kind=I4P)	parameter
SDF_MIN_HIT_FRACTION	real(kind=R8P)	parameter
PI_R8P	real(kind=R8P)	parameter
GOLDEN_ANGLE	real(kind=R8P)	parameter
ORIGIN_OFFSET_REL	real(kind=R8P)	parameter

Subroutines

compute_sdf

subroutine compute_sdf(facet, tree, bmin, bmax, sdf, num_rays, cone_angle_deg, status)

Arguments

Name	Type	Intent	Attributes	Description
facet	type(facet_object)	in
tree	type(aabb_tree_object)	in
bmin	type(vector_R8P)	in
bmax	type(vector_R8P)	in
sdf	real(kind=R8P)	out	allocatable
num_rays	integer(kind=I4P)	in	optional
cone_angle_deg	real(kind=R8P)	in	optional
status	integer(kind=I4P)	out	optional

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smooth_sdf

subroutine smooth_sdf(facet, sdf, lambda, iterations, status)

Arguments

Name	Type	Intent	Attributes	Description
facet	type(facet_object)	in
sdf	real(kind=R8P)	inout
lambda	real(kind=R8P)	in	optional
iterations	integer(kind=I4P)	in	optional
status	integer(kind=I4P)	out	optional

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segment_sdf

subroutine segment_sdf(facet, tree, bmin, bmax, facet_labels, sdf, num_clusters, smoothing_lambda, smoothing_iterations, num_rays, cone_angle_deg, status)

Arguments

Name	Type	Intent	Attributes	Description
facet	type(facet_object)	in
tree	type(aabb_tree_object)	in
bmin	type(vector_R8P)	in
bmax	type(vector_R8P)	in
facet_labels	integer(kind=I4P)	out	allocatable
sdf	real(kind=R8P)	out	allocatable, optional
num_clusters	integer(kind=I4P)	in	optional
smoothing_lambda	real(kind=R8P)	in	optional
smoothing_iterations	integer(kind=I4P)	in	optional
num_rays	integer(kind=I4P)	in	optional
cone_angle_deg	real(kind=R8P)	in	optional
status	integer(kind=I4P)	out	optional

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gmm_fit_1d

subroutine gmm_fit_1d(x, k, mean, var, weight)

Arguments

Name	Type	Intent	Attributes	Description
x	real(kind=R8P)	in
k	integer(kind=I4P)	in
mean	real(kind=R8P)	out	allocatable
var	real(kind=R8P)	out	allocatable
weight	real(kind=R8P)	out	allocatable

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kmeanspp_init

subroutine kmeanspp_init(x, k, centers)

Arguments

Name	Type	Intent	Attributes	Description
x	real(kind=R8P)	in
k	integer(kind=I4P)	in
centers	real(kind=R8P)	out

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gmm_e_step

Attributes: pure

subroutine gmm_e_step(x, mean, var, weight, resp, ll)

Arguments

Name	Type	Intent	Attributes	Description
x	real(kind=R8P)	in
mean	real(kind=R8P)	in
var	real(kind=R8P)	in
weight	real(kind=R8P)	in
resp	real(kind=R8P)	out
ll	real(kind=R8P)	out

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gmm_m_step

Attributes: pure

subroutine gmm_m_step(x, resp, mean, var, weight, var_floor)

Arguments

Name	Type	Intent	Attributes	Description
x	real(kind=R8P)	in
resp	real(kind=R8P)	in
mean	real(kind=R8P)	inout
var	real(kind=R8P)	inout
weight	real(kind=R8P)	inout
var_floor	real(kind=R8P)	in

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argsort_ascending

Attributes: pure

subroutine argsort_ascending(x, order)

Arguments

Name	Type	Intent	Attributes	Description
x	real(kind=R8P)	in
order	integer(kind=I4P)	out

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cone_directions

Attributes: pure

subroutine cone_directions(axis, cone_deg, n, dirs)

Arguments

Name	Type	Intent	Attributes	Description
axis	type(vector_R8P)	in
cone_deg	real(kind=R8P)	in
n	integer(kind=I4P)	in
dirs	type(vector_R8P)	out	allocatable

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ortho_basis

Attributes: pure

subroutine ortho_basis(axis, e1, e2)

Arguments

Name	Type	Intent	Attributes	Description
axis	type(vector_R8P)	in
e1	type(vector_R8P)	out
e2	type(vector_R8P)	out

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Functions

gmm_argmax_posterior

Attributes: pure

Returns: integer(kind=I4P)

function gmm_argmax_posterior(x, mean, var, weight) result(j_star)

Arguments

Name	Type	Intent	Attributes	Description
x	real(kind=R8P)	in
mean	real(kind=R8P)	in
var	real(kind=R8P)	in
weight	real(kind=R8P)	in

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data_variance

Attributes: pure

Returns: real(kind=R8P)

function data_variance(x) result(v)

Arguments

Name	Type	Intent	Attributes	Description
x	real(kind=R8P)	in

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inv_perm

Attributes: pure

Returns: integer(kind=I4P)

function inv_perm(order, j) result(rank)

Arguments

Name	Type	Intent	Attributes	Description
order	integer(kind=I4P)	in
j	integer(kind=I4P)	in

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median

Attributes: pure

Returns: real(kind=R8P)

function median(x) result(m)

Arguments

Name	Type	Intent	Attributes	Description
x	real(kind=R8P)	in

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