intersect_voxel.c File Reference

#include <volume_io/internal_volume_io.h>
#include <bicpl/deform.h>
#include <bicpl/numerical.h>

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Defines
#define	MAX_DERIVS   2
#define	N_STEPS   8
Functions
private void	get_voxel_coefs (int degrees_continuity, Real voxel[], Real coefs[MAX_DERIVS+2][MAX_DERIVS+2][MAX_DERIVS+2])
private void	make_coefs_uv (int degrees_continuity, Real voxels[MAX_DERIVS+2], Real interpolation_coefs[MAX_DERIVS+2][MAX_DERIVS+2], Real coefs[MAX_DERIVS+2])
private void	make_coefs_u (int degrees_continuity, Real coefs_uv[MAX_DERIVS+2][MAX_DERIVS+2], Real interpolation_coefs[MAX_DERIVS+2][MAX_DERIVS+2], Real coefs_u[MAX_DERIVS+2][MAX_DERIVS+2])
private void	find_coefs_of_line (int degrees_continuity, Real coefs[MAX_DERIVS+2][MAX_DERIVS+2][MAX_DERIVS+2], Real ou, Real ov, Real ow, Real du, Real dv, Real dw, Real line_coefs[(MAX_DERIVS+1)*N_DIMENSIONS+1])
private void	get_voxel_line_tricubic (Real coefs[], int x, int y, int z, Real line_origin[], Real line_direction[], Real line_poly[])
public int	find_voxel_line_polynomial (Real coefs[], int degrees_continuity, int x, int y, int z, Real line_origin[], Real line_direction[], Real line_poly[])
private int	get_cubic_root (Real coefs[], Real u_min, Real u_max, Real *solution)
public int	find_voxel_line_value_intersection (Real coefs[], int degrees_continuity, int x, int y, int z, Real line_origin[], Real line_direction[], Real t_min, Real t_max, Real isovalue, Real distances[3])
private void	add_components (int du, int dv, int dw, Real coef, Real line[2][N_DIMENSIONS], Real line_coefs[(MAX_DERIVS+1)*N_DIMENSIONS+1])

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Define Documentation

#define MAX_DERIVS   2

Definition at line 5 of file intersect_voxel.c.

#define N_STEPS   8

Definition at line 131 of file intersect_voxel.c. Referenced by get_cubic_root().

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Function Documentation

private void add_components (  int  du, int  dv, int  dw, Real  coef, Real  line[2][N_DIMENSIONS], Real  line_coefs[(MAX_DERIVS+1)*N_DIMENSIONS+1] )

Definition at line 338 of file intersect_voxel.c. Referenced by find_coefs_of_line().

private void find_coefs_of_line (  int  degrees_continuity, Real  coefs[MAX_DERIVS+2][MAX_DERIVS+2][MAX_DERIVS+2], Real  ou, Real  ov, Real  ow, Real  du, Real  dv, Real  dw, Real  line_coefs[(MAX_DERIVS+1)*N_DIMENSIONS+1] )

Definition at line 452 of file intersect_voxel.c. References add_components(). Referenced by find_voxel_line_polynomial().

public int find_voxel_line_polynomial (  Real  coefs[], int  degrees_continuity, int  x, int  y, int  z, Real  line_origin[], Real  line_direction[], Real  line_poly[] )

Definition at line 90 of file intersect_voxel.c. References find_coefs_of_line(), get_voxel_coefs(), get_voxel_line_tricubic(), MAX_DERIVS, and y. Referenced by check_voxel_for_boundary(), and find_voxel_line_value_intersection().

public int find_voxel_line_value_intersection (  Real  coefs[], int  degrees_continuity, int  x, int  y, int  z, Real  line_origin[], Real  line_direction[], Real  t_min, Real  t_max, Real  isovalue, Real  distances[3] )

Definition at line 189 of file intersect_voxel.c. References find_voxel_line_polynomial(), get_cubic_root(), get_roots_of_polynomial(), MAX_DERIVS, and y. Referenced by check_voxel_for_isovalue().

private int get_cubic_root (  Real  coefs[], Real  u_min, Real  u_max, Real *  solution )

Definition at line 133 of file intersect_voxel.c. References evaluate_polynomial(), get_roots_of_polynomial(), and N_STEPS. Referenced by find_voxel_line_value_intersection().

private void get_voxel_coefs (  int  degrees_continuity, Real  voxel[], Real  coefs[MAX_DERIVS+2][MAX_DERIVS+2][MAX_DERIVS+2] )

Definition at line 229 of file intersect_voxel.c. References make_coefs_u(), make_coefs_uv(), and MAX_DERIVS. Referenced by find_voxel_line_polynomial().

private void get_voxel_line_tricubic (  Real  coefs[], int  x, int  y, int  z, Real  line_origin[], Real  line_direction[], Real  line_poly[] )

Definition at line 32 of file intersect_voxel.c. References y. Referenced by find_voxel_line_polynomial().

private void make_coefs_u (  int  degrees_continuity, Real  coefs_uv[MAX_DERIVS+2][MAX_DERIVS+2], Real  interpolation_coefs[MAX_DERIVS+2][MAX_DERIVS+2], Real  coefs_u[MAX_DERIVS+2][MAX_DERIVS+2] )

Definition at line 317 of file intersect_voxel.c. Referenced by get_voxel_coefs().

private void make_coefs_uv (  int  degrees_continuity, Real  voxels[MAX_DERIVS+2], Real  interpolation_coefs[MAX_DERIVS+2][MAX_DERIVS+2], Real  coefs[MAX_DERIVS+2] )

Definition at line 299 of file intersect_voxel.c. Referenced by get_voxel_coefs().

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