void clear_ensemble_group()
{
if (ensemble_group)
{
Cmiss_field *field = ensemble_group->getField();
Cmiss_field_destroy(&field);
ensemble_group = NULL;
}
}
StrainMeasures::~StrainMeasures() {
for (unsigned int i = 0; i < num_elements; i++) {
Cmiss_element_destroy(&(elements[i]));
}
Cmiss_field_module_destroy(&field_module);
Cmiss_field_cache_destroy(&fieldCache);
Cmiss_field_destroy(&coordianteField);
Cmiss_context_destroy(&context_);
}
ShortAxisFitting::~ShortAxisFitting() {
for (int i = 0; i < NUMBER_OF_NODES; i++)
{
Cmiss_node_destroy(&cmiss_nodes[i]);
}
Cmiss_field_cache_destroy(&cache);
Cmiss_field_destroy(&coordinates_rc_);
Cmiss_field_module_destroy(&field_module_);
Cmiss_context_destroy(&context_);
delete[] initialSegmentLengths;
for (int i = 0; i < 24; i++)
{
delete[] segmentNodes[i];
}
delete[] segmentNodes;
}
~Cmiss_ensemble_index()
{
delete[] indexing;
Cmiss_field_destroy(&indexee);
}
int define_Computed_field_type_compose(struct Parse_state *state,
void *field_modify_void, void *computed_field_compose_package_void)
/*******************************************************************************
LAST MODIFIED : 24 August 2006
DESCRIPTION :
Converts <field> into type COMPUTED_FIELD_COMPOSE (if it is not
already) and allows its contents to be modified.
==============================================================================*/
{
int return_code;
Computed_field_compose_package *computed_field_compose_package;
Computed_field_modify_data *field_modify;
struct Option_table *find_option_table, *option_table,
*out_of_bounds_option_table;
struct Set_Computed_field_conditional_data set_calculate_values_field_data,
set_find_element_xi_field_data, set_texture_coordinates_field_data;
ENTER(define_Computed_field_type_compose);
if (state && (field_modify=(Computed_field_modify_data *)field_modify_void) &&
(computed_field_compose_package =
(Computed_field_compose_package *)
computed_field_compose_package_void))
{
return_code = 1;
Cmiss_mesh_id mesh = 0;
char *search_group_name = 0;
Cmiss_field_id calculate_values_field = 0;
Cmiss_field_id find_element_xi_field = 0;
Cmiss_field_id texture_coordinates_field = 0;
char find_nearest_flag = 0;
char find_exact_flag = 0;
char use_point_five_when_out_of_bounds_flag = 0;
char fail_when_out_of_bounds_flag = 0;
int use_point_five_when_out_of_bounds = 0;
int element_dimension = 0;
/* Maintain the existing behaviour as the default */
int find_nearest = 0;
/* get valid parameters for composite field */
if (field_modify->get_field())
{
Computed_field_compose* compose_core =
dynamic_cast<Computed_field_compose*>(field_modify->get_field()->core);
if (compose_core)
{
return_code = compose_core->get_type(
&calculate_values_field, &find_element_xi_field,
&texture_coordinates_field, &mesh,
&find_nearest, &use_point_five_when_out_of_bounds);
if (mesh)
{
Cmiss_mesh_access(mesh);
element_dimension = Cmiss_mesh_get_dimension(mesh);
}
}
}
if (return_code)
{
/* must access objects for set functions */
if (calculate_values_field)
{
ACCESS(Computed_field)(calculate_values_field);
}
if (find_element_xi_field)
{
ACCESS(Computed_field)(find_element_xi_field);
}
if (texture_coordinates_field)
{
ACCESS(Computed_field)(texture_coordinates_field);
}
option_table = CREATE(Option_table)();
Option_table_add_help(option_table,
"The value of a compose field is found by evaluating the <texture_coordinates_field>, "
"then searching for matching values of the <find_element_xi_field> in the elements of "
"the <mesh> (alternatively specified by <group> and <element_dimension>) and then "
"finally evaluating the <calculate_values_field> at this found location. You can "
"specify the outcome if the matching values cannot be found in the mesh with "
"<use_point_five_when_out_of_bounds> or <fail_when_out_of_bounds>. See examples "
"a/resample_texture or a/create_slices where the compose field is used to find the "
"equivalent coordinate in another element to evaluate a texture.");
/* calculate_values_field */
set_calculate_values_field_data.computed_field_manager =
field_modify->get_field_manager();
set_calculate_values_field_data.conditional_function =
Computed_field_has_numerical_components;
set_calculate_values_field_data.conditional_function_user_data =
(void *)NULL;
Option_table_add_entry(option_table, "calculate_values_field",
&calculate_values_field, &set_calculate_values_field_data,
set_Computed_field_conditional);
Option_table_add_int_positive_entry(option_table,"element_dimension",
&element_dimension);
/* find_element_xi_field */
set_find_element_xi_field_data.computed_field_manager =
field_modify->get_field_manager();
set_find_element_xi_field_data.conditional_function =
Computed_field_has_numerical_components;
set_find_element_xi_field_data.conditional_function_user_data =
(void *)NULL;
Option_table_add_entry(option_table, "find_element_xi_field",
&find_element_xi_field, &set_find_element_xi_field_data,
set_Computed_field_conditional);
find_option_table=CREATE(Option_table)();
Option_table_add_char_flag_entry(find_option_table,"find_nearest",
&find_nearest_flag);
Option_table_add_char_flag_entry(find_option_table,"find_exact",
&find_exact_flag);
Option_table_add_suboption_table(option_table, find_option_table);
/* group */
Option_table_add_string_entry(option_table, "group",
&search_group_name, " GROUP_NAME");
// mesh
Option_table_add_mesh_entry(option_table, "mesh", field_modify->get_region(), &mesh);
/* texture_coordinates_field */
set_texture_coordinates_field_data.computed_field_manager =
field_modify->get_field_manager();
set_texture_coordinates_field_data.conditional_function =
Computed_field_has_numerical_components;
set_texture_coordinates_field_data.conditional_function_user_data =
(void *)NULL;
Option_table_add_entry(option_table, "texture_coordinates_field",
&texture_coordinates_field, &set_texture_coordinates_field_data,
set_Computed_field_conditional);
out_of_bounds_option_table=CREATE(Option_table)();
/* use_point_five_when_out_of_bounds */
Option_table_add_char_flag_entry(out_of_bounds_option_table,
"use_point_five_when_out_of_bounds",
&use_point_five_when_out_of_bounds_flag);
Option_table_add_char_flag_entry(out_of_bounds_option_table,
"fail_when_out_of_bounds",
&fail_when_out_of_bounds_flag);
Option_table_add_suboption_table(option_table, out_of_bounds_option_table);
return_code = Option_table_multi_parse(option_table, state);
if (return_code && !mesh)
{
mesh = Cmiss_field_module_find_mesh_by_dimension(
field_modify->get_field_module(), element_dimension);
if (search_group_name)
{
Cmiss_field_id group_field = Cmiss_field_module_find_field_by_name(field_modify->get_field_module(), search_group_name);
Cmiss_field_group_id group = Cmiss_field_cast_group(group_field);
Cmiss_field_element_group_id element_group = Cmiss_field_group_get_element_group(group, mesh);
Cmiss_mesh_destroy(&mesh);
mesh = Cmiss_mesh_group_base_cast(Cmiss_field_element_group_get_mesh(element_group));
Cmiss_field_element_group_destroy(&element_group);
Cmiss_field_group_destroy(&group);
Cmiss_field_destroy(&group_field);
}
}
if (return_code && !mesh)
{
display_message(ERROR_MESSAGE, "You must specify a mesh (or element_dimension and optional group).");
return_code = 0;
}
if (return_code)
{
if (find_nearest_flag && find_exact_flag)
{
display_message(ERROR_MESSAGE,
"Specify only one of find_nearest and find_exact");
return_code = 0;
}
if (find_nearest_flag)
{
find_nearest = 1;
}
else if (find_exact_flag)
{
find_nearest = 0;
}
if (use_point_five_when_out_of_bounds_flag &&
fail_when_out_of_bounds_flag)
{
display_message(ERROR_MESSAGE,
"Specify only one of use_point_five_when_out_of_bounds "
"and fail_when_out_of_bounds");
return_code = 0;
}
if (use_point_five_when_out_of_bounds_flag)
{
use_point_five_when_out_of_bounds = 1;
}
else if (fail_when_out_of_bounds_flag)
{
use_point_five_when_out_of_bounds = 0;
}
}
if (return_code)
{
return_code = field_modify->update_field_and_deaccess(
Computed_field_create_compose(field_modify->get_field_module(),
texture_coordinates_field, find_element_xi_field,
calculate_values_field, mesh,
find_nearest, use_point_five_when_out_of_bounds));
}
if (!return_code)
{
if ((!state->current_token) ||
(strcmp(PARSER_HELP_STRING, state->current_token)&&
strcmp(PARSER_RECURSIVE_HELP_STRING, state->current_token)))
{
/* error */
display_message(ERROR_MESSAGE,
"define_Computed_field_type_compose. Failed");
}
}
Cmiss_mesh_destroy(&mesh);
if (calculate_values_field)
{
DEACCESS(Computed_field)(&calculate_values_field);
}
if (find_element_xi_field)
{
DEACCESS(Computed_field)(&find_element_xi_field);
}
if (search_group_name)
{
DEALLOCATE(search_group_name);
}
if (texture_coordinates_field)
{
DEACCESS(Computed_field)(&texture_coordinates_field);
}
DESTROY(Option_table)(&option_table);
}
}
else
{
display_message(ERROR_MESSAGE,
"define_Computed_field_type_compose. Invalid argument(s)");
return_code = 0;
}
LEAVE;
return (return_code);
} /* define_Computed_field_type_compose */
void StrainMeasures::embedStrainOnElements(std::string fieldname, std::vector<std::string>& strain) {
const unsigned int num_strains = numberOfModelFrames_;
double times[1024];
for (unsigned int j = 0; j < num_strains; j++) {
times[j] = static_cast<double>(j) / (num_strains - 1.0);
}
Cmiss_time_sequence_id time_sequence = Cmiss_field_module_get_matching_time_sequence(field_module, num_strains, times);
Cmiss_field_module_begin_change(field_module);
//Create Node template
Cmiss_nodeset_id nodeset = Cmiss_field_module_find_nodeset_by_name(field_module, "cmiss_nodes");
Cmiss_node_template_id nodeTemplate = Cmiss_nodeset_create_node_template(nodeset);
//Create the field
Cmiss_field_id strainField = Cmiss_field_module_create_field(field_module, fieldname.c_str(), "finite number_of_components 1 component_names value");
if (!strainField) {
std::cout << "Unable to create field " << fieldname << std::endl;
return;
}
Cmiss_node_template_define_field(nodeTemplate, strainField);
Cmiss_node_template_define_time_sequence(nodeTemplate, strainField, time_sequence);
//Create Element template
Cmiss_mesh_id mesh = Cmiss_field_module_find_mesh_by_dimension(field_module, 3);
Cmiss_element_template_id element_template = Cmiss_mesh_create_element_template(mesh);
Cmiss_element_template_set_shape_type(element_template, CMISS_ELEMENT_SHAPE_CUBE);
Cmiss_element_template_set_number_of_nodes(element_template, 1);
Cmiss_element_basis_id constant_basis = Cmiss_field_module_create_element_basis(field_module, 3, CMISS_BASIS_FUNCTION_CONSTANT);
const int local_node_index = 1;
Cmiss_element_template_define_field_simple_nodal(element_template, strainField, -1, constant_basis, 1, &local_node_index);
Cmiss_element_basis_destroy(&constant_basis);
//Map strains to elements
std::map<int, int> elemStrainMap; //Cmiss element no is mapped to strain array number
//APLAX
elemStrainMap[3] = elemStrainMap[10] = 1; //Array id base 0
elemStrainMap[15] = elemStrainMap[22] = 18; //Average of strain ids 2 and 8
elemStrainMap[27] = elemStrainMap[34] = 12;
elemStrainMap[39] = elemStrainMap[46] = 17;
elemStrainMap[40] = elemStrainMap[45] = 17;
elemStrainMap[28] = elemStrainMap[33] = 10;
elemStrainMap[16] = elemStrainMap[21] = 19; //Average of strain ids 11 and 5
elemStrainMap[4] = elemStrainMap[9] = 4;
//TCH
elemStrainMap[11] = elemStrainMap[12] = 2; //Array id base 0
elemStrainMap[23] = elemStrainMap[24] = 20; //Average of strain ids 3 and 9
elemStrainMap[35] = elemStrainMap[36] = 8;
elemStrainMap[47] = elemStrainMap[48] = 16;
elemStrainMap[41] = elemStrainMap[42] = 16;
elemStrainMap[17] = elemStrainMap[18] = 11;
elemStrainMap[29] = elemStrainMap[30] = 21; //Average of strain ids 12 and 6
elemStrainMap[5] = elemStrainMap[6] = 5;
//FCH
elemStrainMap[1] = elemStrainMap[2] = 3; //Array id base 0
elemStrainMap[13] = elemStrainMap[14] = 22; //Average of 10 and 4
elemStrainMap[25] = elemStrainMap[26] = 4;
elemStrainMap[37] = elemStrainMap[38] = 23; //Average of strains 14 and 15
elemStrainMap[43] = elemStrainMap[44] = 24; //Average of strains 16 and 13
elemStrainMap[31] = elemStrainMap[32] = 6;
elemStrainMap[19] = elemStrainMap[20] = 25; //Average of strains 7 and 1
elemStrainMap[7] = elemStrainMap[8] = 0;
std::vector<std::string> allStrain = strain;
//Add the additional strains 18 - 23
std::string s2 = strain[1];
std::string s8 = strain[7];
std::string s11 = strain[10];
std::string s5 = strain[5];
std::string s9 = strain[8];
std::string s3 = strain[2];
std::string s12 = strain[11];
std::string s6 = strain[6];
std::string s10 = strain[9];
std::string s4 = strain[3];
std::string s14 = strain[13];
std::string s15 = strain[14];
std::string s16 = strain[15];
std::string s13 = strain[12];
std::string s1 = strain[0];
std::string s7 = strain[6];
std::vector<std::string> compute;
compute.push_back(s2);
compute.push_back(s8);
compute.push_back(s11);
compute.push_back(s5);
compute.push_back(s9);
compute.push_back(s3);
compute.push_back(s12);
compute.push_back(s6);
compute.push_back(s10);
compute.push_back(s4);
compute.push_back(s14);
compute.push_back(s15);
compute.push_back(s16);
compute.push_back(s13);
compute.push_back(s7);
compute.push_back(s1);
for (int cptc = 0; cptc < 16; cptc += 2) {
std::vector<std::string> strain1;
std::vector<std::string> strain2;
std::ostringstream ss;
boost::split(strain1, compute[cptc], boost::is_any_of(","));
boost::split(strain2, compute[cptc + 1], boost::is_any_of(","));
for (unsigned int j = 0; j < num_strains - 1; j++) {
double value1 = atof(strain1[j].c_str());
double value2 = atof(strain2[j].c_str());
ss << (value1 + value2) * 0.5 << ",";
}
ss << "0.0";
allStrain.push_back(ss.str());
}
for (unsigned int i = 0; i < num_elements; i++) {
Cmiss_node_id temporaryNode = Cmiss_nodeset_create_node(nodeset, extraNodeStartID++, nodeTemplate);
Cmiss_element_template_set_node(element_template, 1, temporaryNode); //Link node with the element
Cmiss_element_merge(elements[i], element_template);
Cmiss_field_cache_set_node(fieldCache, temporaryNode);
std::vector<std::string> strains;
boost::split(strains, allStrain[elemStrainMap[i + 1]], boost::is_any_of(","));
for (unsigned int j = 0; j < num_strains; j++) {
double value = atof(strains[j].c_str());
double time = times[j];
Cmiss_field_cache_set_time(fieldCache, time);
Cmiss_field_assign_real(strainField,fieldCache,1,&value);
}
Cmiss_node_destroy(&temporaryNode);
}
Cmiss_field_module_end_change(field_module);
Cmiss_field_destroy(&strainField);
Cmiss_element_template_destroy(&element_template);
Cmiss_node_template_destroy(&nodeTemplate);
Cmiss_nodeset_destroy(&nodeset);
//Calling the following leads to the error ERROR: DESTROY(FE_time_sequence). Positive access_count
//Cmiss_time_sequence_destroy(&time_sequence);
}
std::vector<std::string> StrainMeasures::getLinearDistortion(double* wall_xi, unsigned int cnt, double power) {
unsigned int xdiscret = 25;
unsigned int ydiscret = 25;
//Create points of interest array
double **pointsOfInterest_x = new double*[xdiscret + 1];
double **pointsOfInterest_y = new double*[xdiscret + 1];
for (unsigned int i = 0; i <= xdiscret; i++) {
pointsOfInterest_x[i] = new double[ydiscret + 1];
pointsOfInterest_y[i] = new double[ydiscret + 1];
}
double delx = 1.0 / xdiscret;
double dely = 1.0 / ydiscret;
for (unsigned int xd = 0; xd <= xdiscret; xd++) {
double xinc = xd * delx;
if (xinc == 0.0)
xinc = 0.001;
if (xinc == 1.0)
xinc = 0.99;
for (unsigned int yd = 0; yd <= ydiscret; yd++) {
double yinc = yd * dely;
if (yinc == 0.0)
yinc = 0.001;
if (yinc == 1.0)
yinc = 0.99;
pointsOfInterest_x[xd][yd] = xinc;
pointsOfInterest_y[xd][yd] = yinc;
}
}
Cmiss_field_id principleStarinsField = Cmiss_field_module_find_field_by_name(field_module, "principal_strains");
double temp_array[3];
double coordinates[3];
long nan_count = 0;
std::vector<std::string> results;
std::vector<LevelSet*>* coordSets = new std::vector<LevelSet*>();
std::vector<LevelSet*>* deformSets = new std::vector<LevelSet*>();
for (unsigned int ls = 0; ls < cnt; ls++) {
coordSets->clear();
deformSets->clear();
for (unsigned int mt = 0; mt < numberOfModelFrames_; mt++) {
double time = ((double) mt) / (numberOfModelFrames_ - 1.0);
LevelSet* myCoordLevelSet = new LevelSet(num_elements, xdiscret + 1, ydiscret + 1);
LevelSet* myDeformLevelSet = new LevelSet(num_elements, xdiscret + 1, ydiscret + 1, 1);
Cmiss_field_cache_set_time(fieldCache, time);
nan_count = 0;
for (unsigned int xd = 0; xd <= xdiscret; xd++) {
for (unsigned int yd = 0; yd <= ydiscret; yd++) {
for (unsigned int elementId = 0; elementId < num_elements; elementId++) {
coordinates[0] = pointsOfInterest_x[xd][yd];
coordinates[1] = pointsOfInterest_y[xd][yd];
coordinates[2] = wall_xi[ls];
//std::cout<<coordinates[0]<<" "<<coordinates[1]<<" "<<coordinates[2]<<std::endl;
temp_array[0] = temp_array[1] = temp_array[2] = 0.0;
Cmiss_field_cache_set_mesh_location(fieldCache, elements[elementId], 3, coordinates);
Cmiss_field_evaluate_real(principleStarinsField, fieldCache, 3, temp_array);
double result = getLocalDeformation(temp_array, &nan_count);
myDeformLevelSet->setData(elementId, xd, yd, &result, 1);
Cmiss_field_evaluate_real(coordianteField, fieldCache, 3, temp_array);
myCoordLevelSet->setData(elementId, xd, yd, temp_array, 3);
}
}
}
coordSets->push_back(myCoordLevelSet);
deformSets->push_back(myDeformLevelSet);
}
std::stringstream ss;
unsigned int numpoints = coordSets->size();
for (unsigned int i = 0; i < numpoints; i++) {
LevelSet* myCoordLevelSet = coordSets->at(i);
LevelSet* myDeformLevelSet = deformSets->at(i);
ss << myDeformLevelSet->getLPSum(0, power) / myCoordLevelSet->getArea();
if (i < (numpoints - 1))
ss << ",";
delete myCoordLevelSet;
delete myDeformLevelSet;
}
results.push_back(ss.str());
}
//Clean up
delete deformSets;
delete coordSets;
for (unsigned int i = 0; i <= xdiscret; i++) {
delete[] pointsOfInterest_x[i];
delete[] pointsOfInterest_y[i];
}
delete[] pointsOfInterest_x;
delete[] pointsOfInterest_y;
Cmiss_field_destroy(&principleStarinsField);
return results;
}
StrainMeasures::StrainMeasures(std::vector<std::string> mesh) :
mySegments(NULL) {
num_level_sets = 10;
num_elements = 48;
num_nodes = 98;
elements.resize(num_elements);
x_discret = 25;
y_discret = 25;
lagrangian = true;
modelPGS = 0.0;
computeModelPGS = false;
ejectionFraction = 0.0;
extraNodeStartID = 100000;
LVMyocardialVolume* lvm = new LVMyocardialVolume(mesh);
volumes = lvm->getMyocardialVolumes();
delete lvm;
//Read the mesh
context_ = Cmiss_context_create("strainmeasure");
/**< Handle to the context */
Cmiss_region_id root_region = Cmiss_context_get_default_region(context_);
//This required for using the cmiss_context_execute_command
Cmiss_context_enable_user_interface(context_, NULL);
//Load the finite element mesh of the heart
std::string region_name = "heart";
Cmiss_region_id heart_region = Cmiss_region_create_child(root_region, region_name.c_str());
//Get the field module of the heart region
field_module = Cmiss_region_get_field_module(heart_region);
fieldCache = Cmiss_field_module_create_cache(field_module);
numberOfModelFrames_ = mesh.size();
double denom = numberOfModelFrames_ - 1;
for (unsigned int i = 0; i < numberOfModelFrames_; i++) {
double time = static_cast<double>(i) / denom;
Cmiss_stream_information_id stream_information = Cmiss_region_create_stream_information(root_region);
Cmiss_stream_information_region_id stream_information_region = Cmiss_stream_information_cast_region(stream_information);
Cmiss_stream_resource_id stream_resource = Cmiss_stream_information_create_resource_memory_buffer(stream_information, mesh[i].c_str(), mesh[i].length());
Cmiss_stream_information_region_set_resource_attribute_real(stream_information_region, stream_resource, CMISS_STREAM_INFORMATION_REGION_ATTRIBUTE_TIME, time);
Cmiss_region_read(root_region, stream_information);
Cmiss_stream_resource_destroy(&stream_resource);
Cmiss_stream_information_destroy(&stream_information);
Cmiss_stream_information_region_destroy(&stream_information_region);
}
{ //Define the necessary fields
std::string referenceMesh = mesh[0];
//Change coordinate name to reference_coordinates
boost::replace_all(referenceMesh, "1) coordinates", "1) reference_coordinates");
//Load the reference coordinates mesh
Cmiss_stream_information_id stream_information = Cmiss_region_create_stream_information(root_region);
Cmiss_stream_information_region_id stream_information_region = Cmiss_stream_information_cast_region(stream_information);
Cmiss_stream_resource_id stream_resource = Cmiss_stream_information_create_resource_memory_buffer(stream_information, referenceMesh.c_str(), referenceMesh.length());
Cmiss_region_read(root_region, stream_information);
Cmiss_stream_resource_destroy(&stream_resource);
Cmiss_stream_information_destroy(&stream_information);
}
coordianteField = Cmiss_field_module_find_field_by_name(field_module, "reference_coordinates");
if (!coordianteField) {
std::cout << "reference_coordinates field not found " << std::endl;
}
Cmiss_region_destroy(&heart_region);
//#Calculate the strains
Cmiss_field_module_define_field(field_module, "F", "gradient coordinate reference_coordinates field coordinates");
Cmiss_field_module_define_field(field_module, "F_transpose", "transpose source_number_of_rows 3 field F");
Cmiss_field_module_define_field(field_module, "C", "matrix_multiply number_of_rows 3 fields F_transpose F");
Cmiss_field_module_define_field(field_module, "principal_strains", "eigenvalues field C");
Cmiss_field_destroy(&coordianteField);
//Assign the coordinates field to the handle for downstream use
coordianteField = Cmiss_field_module_find_field_by_name(field_module, "coordinates");
//Define the fibre field
{
//Load the reference fibre data and reference coordinates
{
if (Cmiss_field_module_find_field_by_name(field_module, "fibres") == NULL) {
Cmiss_stream_information_id stream_information = Cmiss_region_create_stream_information(root_region);
Cmiss_stream_information_region_id stream_information_region = Cmiss_stream_information_cast_region(stream_information);
//Cmiss_stream_resource_id stream_resource = Cmiss_stream_information_create_resource_memory_buffer(stream_information, reffibre_exregion, reffibre_exregion_len);
Cmiss_stream_resource_id stream_resource = Cmiss_stream_information_create_resource_memory_buffer(stream_information, humandtifibre_exregion,
humandtifibre_exregion_len);
Cmiss_region_read(root_region, stream_information);
Cmiss_stream_resource_destroy(&stream_resource);
Cmiss_stream_information_destroy(&stream_information);
}
//Define fibre field
//#Calculate the deformed fibre axes
Cmiss_field_module_define_field(field_module, "fibre_axes", "fibre_axes coordinate reference_coordinates fibre fibres");
Cmiss_field_module_define_field(field_module, "deformed_fibre_axes", "matrix_multiply number_of_rows 3 fields fibre_axes F_transpose");
Cmiss_field_module_define_field(field_module, "deformed_fibre", "composite deformed_fibre_axes.1 deformed_fibre_axes.2 deformed_fibre_axes.3");
Cmiss_field_module_define_field(field_module, "principal_fibre_strain1", "composite deformed_fibre_axes.1");
}
}
//Determine the myocardial volume
//Get the element and node handles
Cmiss_mesh_id cmiss_mesh = Cmiss_field_module_find_mesh_by_name(field_module, "cmiss_mesh_3d");
Cmiss_element_iterator_id elementIterator = Cmiss_mesh_create_element_iterator(cmiss_mesh);
Cmiss_element_id element = Cmiss_element_iterator_next(elementIterator);
while (element != NULL) {
int elementId = Cmiss_element_get_identifier(element) - 1; //Cmiss numbering starts at 1
elements[elementId] = element;
element = Cmiss_element_iterator_next(elementIterator);
}
Cmiss_element_iterator_destroy(&elementIterator);
Cmiss_mesh_destroy(&cmiss_mesh);
Cmiss_region_destroy(&root_region);
}
std::vector<std::string> StrainMeasures::getSegmentStrains(std::string fieldName) {
std::vector<std::string> strains(19);
Cmiss_field_id field = Cmiss_field_module_find_field_by_name(field_module, fieldName.c_str());
//Compute strains
unsigned int numSegments = mySegments->size();
double temp_array1[3];
double temp_array2[3];
//#define printcoord
#ifdef printcoord
#include "MeshTopology.h"
std::vector<Cmiss_node_id> myNodes(100);
Cmiss_nodeset_id nodeset = Cmiss_field_module_find_nodeset_by_name(field_module, "cmiss_nodes");
Cmiss_node_iterator_id nodeIterator = Cmiss_nodeset_create_node_iterator(nodeset);
Cmiss_node_id node = Cmiss_node_iterator_next(nodeIterator);
if (node != 0) {
double temp_array[3];
while (node) {
int node_id = Cmiss_node_get_identifier(node);
myNodes[node_id - 1] = node;
node = Cmiss_node_iterator_next(nodeIterator);
}
}
Cmiss_nodeset_destroy(&nodeset);
Cmiss_node_iterator_destroy(&nodeIterator);
std::vector<int> Nodes(27);
Nodes[8] = aplaxNodes8;
Nodes[7] = aplaxNodes7;
Nodes[6] = aplaxNodes6;
Nodes[5] = aplaxNodes5;
Nodes[4] = aplaxNodes4;
Nodes[3] = aplaxNodes3;
Nodes[2] = aplaxNodes2;
Nodes[1] = aplaxNodes1;
Nodes[0] = aplaxNodes0;
Nodes[9] = tchNodes0;
Nodes[10] = tchNodes1;
Nodes[11] = tchNodes2;
Nodes[12] = tchNodes3;
Nodes[13] = tchNodes4;
Nodes[14] = tchNodes5;
Nodes[15] = tchNodes6;
Nodes[16] = tchNodes7;
Nodes[17] = tchNodes8;
Nodes[18] = fchNodes0;
Nodes[19] = fchNodes1;
Nodes[20] = fchNodes2;
Nodes[21] = fchNodes3;
Nodes[22] = fchNodes4;
Nodes[23] = fchNodes5;
Nodes[24] = fchNodes6;
Nodes[25] = fchNodes7;
Nodes[26] = fchNodes8;
#endif
std::vector<std::vector<double> > aplaxLengths;
std::vector<std::vector<double> > tchLengths;
std::vector<std::vector<double> > fchLengths;
double denomj = (numberOfModelFrames_ - 1.0);
for (int i = 0; i < numberOfModelFrames_; i++) {
std::vector<double> cLengths;
double time = ((double) i) / denomj;
Cmiss_field_cache_set_time(fieldCache, time);
#ifdef printcoord
std::cout<<"Frame "<<i<<"\t"<<time<<"\t"<<mySegments->at(0).xia[2]<<std::endl;
#endif
for (int j = 0; j < numSegments; j++) {
WallSegment& seg = mySegments->at(j);
//The the lengths
temp_array1[0] = temp_array1[1] = temp_array1[2] = 0.0;
temp_array2[0] = temp_array2[1] = temp_array2[2] = 0.0;
//Since cmiss id starts at 1 subtract 1 from seg.elemeid?
//Note that accessing some computed field (those that involve gradients), with multiple versions leads to gradient set to 0 warning
Cmiss_field_cache_set_mesh_location(fieldCache, elements[seg.elementida - 1], 3, seg.xia);
Cmiss_field_evaluate_real(field, fieldCache, 3, temp_array1);
Cmiss_field_cache_set_mesh_location(fieldCache, elements[seg.elementidb - 1], 3, seg.xib);
Cmiss_field_evaluate_real(field, fieldCache, 3, temp_array2);
Point3D p1(temp_array1);
Point3D p2(temp_array2);
double dist = p1.distance(p2);
#ifdef printcoord
{
int nodeCtr = (j / 8) * 9 + j % 8;
Cmiss_field_cache_set_node(fieldCache, myNodes[Nodes[nodeCtr]]);
temp_array1[0] = temp_array1[1] = temp_array1[2] = 0.0;
Cmiss_field_evaluate_real(field, fieldCache, 3, temp_array1);
Point3D p3(temp_array1);
Cmiss_field_cache_set_node(fieldCache, myNodes[Nodes[nodeCtr + 1]]);
temp_array1[0] = temp_array1[1] = temp_array1[2] = 0.0;
Cmiss_field_evaluate_real(field, fieldCache, 3, temp_array1);
Point3D p4(temp_array1);
std::cout << p1 << "\t" << p2 << " = " << dist << "\t:\t Value at " << Nodes[nodeCtr] + 1 << "\t" << p3 << "\t" << p1.distance(p3) << "\t" << Nodes[nodeCtr + 1] + 1
<< "\t" << p4 << "\t" << p2.distance(p4) << "\t distance \t " << p3.distance(p4) << std::endl;
}
#endif
cLengths.push_back(dist);
}
for (int segc = 0; segc < numSegments / 8; segc++) {
int offset = segc * 8;
std::vector<double> sLengths;
sLengths.push_back(cLengths[0 + offset] + (1 / 3.0 - 1 / 4.0) * 4 * cLengths[1 + offset]);
sLengths.push_back((1.0 - (1 / 3.0 - 1 / 4.0)) * 4 * cLengths[1 + offset] + (2 / 3.0 - 1 / 2.0) * 4 * cLengths[2 + offset]);
sLengths.push_back((1.0 - (2 / 3.0 - 1 / 2.0)) * 4 * cLengths[2 + offset] + cLengths[3 + offset]);
sLengths.push_back(cLengths[4 + offset] + (1.0 - (2 / 3.0 - 1 / 2.0)) * 4 * cLengths[5 + offset]);
sLengths.push_back((2 / 3.0 - 1 / 2.0) * 4 * cLengths[5 + offset] + (1.0 - (1 / 3.0 - 1 / 4.0)) * 4 * cLengths[6 + offset]);
sLengths.push_back((1 / 3.0 - 1 / 4.0) * 4 * cLengths[6 + offset] + cLengths[7 + offset]);
if (segc == 0)
aplaxLengths.push_back(sLengths);
else if (segc == 1)
tchLengths.push_back(sLengths);
else
fchLengths.push_back(sLengths);
}
}
std::vector<double> avgStrains(numberOfModelFrames_, 0.0);
for (int segc = 0; segc < numSegments / 8; segc++) {
std::vector<std::vector<double> > dstrains;
std::vector<std::vector<double> > distances;
if (segc == 0)
distances = aplaxLengths;
else if (segc == 1)
distances = tchLengths;
else if (segc == 2)
distances = fchLengths;
std::vector<double>& initStrain = distances[0];
for (int frame = 1; frame < numberOfModelFrames_; frame++) { //Compute Strains
std::vector<double>& curStrainLengths = distances[frame];
std::vector<double> curStrain;
double c = 0;
unsigned int ulimit = initStrain.size();
for (int j = 0; j < ulimit; j++) {
c = 100.0 * (curStrainLengths[j] - initStrain[j]) / initStrain[j];
curStrain.push_back(c);
}
dstrains.push_back(curStrain);
}
std::vector<std::string> strainSeries;
for (int j = 0; j < initStrain.size(); j++) {
std::ostringstream ss;
ss << 0.0; //For init step
int denom = numberOfModelFrames_ - 1;
double maxStrain = dstrains[denom - 1][j];
//Note that frame goes from 1 to heart.numberOfModelFrames_ when computing strain
//so shift down by 1
for (int i = 0; i < denom; i++) { //Compute Strains
//Drift compensate
double stc = dstrains[i][j] - (i + 1) * maxStrain / denom;
ss << "," << stc;
avgStrains[i] += stc;
}
strainSeries.push_back(ss.str());
}
if (segc == 0) {
strains[2 - 1] = strainSeries[5];
strains[8 - 1] = strainSeries[4];
strains[17 - 1] = strainSeries[3];
strains[18 - 1] = strainSeries[2];
strains[11 - 1] = strainSeries[1];
strains[5 - 1] = strainSeries[0];
} else if (segc == 2) {
strains[3 - 1] = strainSeries[0];
strains[9 - 1] = strainSeries[1];
strains[14 - 1] = strainSeries[2];
strains[16 - 1] = strainSeries[3];
strains[12 - 1] = strainSeries[4];
strains[6 - 1] = strainSeries[5];
} else if (segc == 1) {
strains[4 - 1] = strainSeries[0];
strains[10 - 1] = strainSeries[1];
strains[15 - 1] = strainSeries[2];
strains[13 - 1] = strainSeries[3];
strains[7 - 1] = strainSeries[4];
strains[1 - 1] = strainSeries[5];
}
}
#ifdef printcoord
std::cout << "Linear 3D " << fieldName << std::endl;
for (int i = 1; i < 100; i++)
Cmiss_node_destroy(&myNodes[i]);
#endif
//Add the average strain
//Num strain segments depends on the number of active segments (6 strain segments per view, which has 8 active segments)
double denom = (numSegments / 8) * 6;
std::ostringstream ss;
ss << 0.0; //For init step
for (int i = 0; i < numberOfModelFrames_ - 1; i++) { //Compute the Average
ss << "," << avgStrains[i] / denom;
}
strains[18] = ss.str();
//Check if model PGS should be calculated
if (computeModelPGS) {
double max = fabs(avgStrains[0]);
int idx = 0;
for (int i = 1; i < numberOfModelFrames_ - 1; i++) {
if (fabs(avgStrains[i]) > max) {
max = fabs(avgStrains[i]);
idx = i;
}
}
modelPGS = avgStrains[idx] / denom;
computeModelPGS = false; //set it so that it is not computed in subsequent calls
}
Cmiss_field_destroy(&field);
return strains;
}