model_shell.h File Reference

Library routines used for shell model processing. More...

#include "rwmodel.h"

Functions
long	model_add_shell (Bmodel *model, double add_distance, Bstring &new_type)
	Adds a shell to a model using selected components. More...
int	model_adjust_shell_to_guide (Bmodel *model, Bmodel *gmod, double fraction, int curv_flag)
	Adjusts a shell model to the faces of a polyhedral guide model. More...
Bmodel *	model_components_to_shells (Bmodel *model, double distance, Bstring &nutype, int twod)
	Generates a new set of models by vonverting each component to a shell model. More...
double	model_sphericity (Bmodel *model)
	Calculates how close the model is to a spherical shape. More...
double	model_ellipsoidicity (Bmodel *model)
	Calculates how close the model is to an ellipsoid shape. More...
int	model_curvature (Bmodel *model)
	Calculates the curvature associated with each link. More...
double	model_inside_outside (Vector3< double > vec, Bmodel *model, int curv_flag, int fast)

Detailed Description

Library routines used for shell model processing.

Author

Bernard Heymann

Date

Created: 20060908

Modified: 20161013

Function Documentation

model_add_shell()

long model_add_shell	(	Bmodel *	model,
		double	add_distance,
		Bstring &	nutype
	)

Adds a shell to a model using selected components.

Parameters

*model	model structure.
add_distance	distance to shift new components.
&nutype	new component type.

Returns

long number of components in new shell.

Each selected component is duplicated and shifted radially.
Only the first model in the list is used.

model_adjust_shell_to_guide()

int model_adjust_shell_to_guide	(	Bmodel *	model,
		Bmodel *	gmod,
		double	fraction,
		int	curv_flag
	)

Adjusts a shell model to the faces of a polyhedral guide model.

Parameters

*model	shell model.
*gmod	guide polyhedron model.
fraction	fraction to adjust.
curv_flag	flag to indicate curved surface.

Returns

int 0.

For each component, it is determined whether it is located inside or 
outside the appropriate polyhedral face, and its coordinates adjust
closer to the face by the indicated fraction.

model_components_to_shells()

Bmodel * model_components_to_shells	(	Bmodel *	model,
		double	distance,
		Bstring &	nutype,
		int	twod
	)

Generates a new set of models by vonverting each component to a shell model.

Parameters

*model	model structure.
distance	distance between components.
&nutype	new component type.
twod	flag to indicate a 2D model.

Returns

Bmodel* new list of models.

Each selected component is converted to a shell model.
The radius is taken from the original component radius.
The given distance defines the distance between the new
components and their radii.

model_curvature()

int model_curvature

(

Bmodel *

model

)

Calculates the curvature associated with each link.

Parameters

*model

model structure (views modified).

Returns

int 0.

The difference angle in the normals or view vectors of each pair of
vertices of a link represents the curvature for that link.
Curvature at each component is calculated as the average of the 
curvature of the attached links and set as the component FOM.
The model curvature is calculated as the average component curvature
and set as the model FOM.

model_ellipsoidicity()

double model_ellipsoidicity

(

Bmodel *

model

)

Calculates how close the model is to an ellipsoid shape.

Parameters

*model

model structure.

Returns

double ellipsoidicity.

The principal axes are calculated first.
Then the fit to an ellipsoid function is calculated.
Only the first model in the list is processed.

model_inside_outside()

double model_inside_outside	(	Vector3< double >	vec,
		Bmodel *	model,
		int	curv_flag,
		int	fast
	)

model_sphericity()

double model_sphericity

(

Bmodel *

model

)

Calculates how close the model is to a spherical shape.

Parameters

*model

model structure.

Returns

double sphericity.

The deviation of vertices from the average radius is calculated.
Only the first model in the list is processed.