quadric.c File Reference

#include <string.h>
#include "BLI_math_base.h"
#include "BLI_math_matrix.h"
#include "BLI_math_vector.h"
#include "BLI_quadric.h"
#include "BLI_strict_flags.h"

Go to the source code of this file.

Macros
#define	QUADRIC_FLT_TOT   (sizeof(Quadric) / sizeof(double))

Functions
void	BLI_quadric_from_plane (Quadric *q, const double v[4])
static bool	quadric_to_tensor_m3_inverse (const Quadric *q, double m[3][3], double epsilon)
void	BLI_quadric_to_vector_v3 (const Quadric *q, double v[3])
void	BLI_quadric_clear (Quadric *q)
void	BLI_quadric_add_qu_qu (Quadric *a, const Quadric *b)
void	BLI_quadric_add_qu_ququ (Quadric *r, const Quadric *a, const Quadric *b)
void	BLI_quadric_mul (Quadric *a, const double scalar)
double	BLI_quadric_evaluate (const Quadric *q, const double v[3])
bool	BLI_quadric_optimize (const Quadric *q, double v[3], const double epsilon)

Detailed Description

Note

This isn't fully complete, possible there are other useful functions to add here.

follow BLI_math naming convention here.

this uses doubles for internal calculations, even though input/output are floats in some cases.

This is done because the cases quadrics are useful often need high precision, see #44780.

Definition in file quadric.c.

Macro Definition Documentation

QUADRIC_FLT_TOT

#define QUADRIC_FLT_TOT   (sizeof(Quadric) / sizeof(double))

Definition at line 29 of file quadric.c.

Referenced by BLI_quadric_add_qu_qu(), BLI_quadric_add_qu_ququ(), and BLI_quadric_mul().

Function Documentation

BLI_quadric_add_qu_qu()

void BLI_quadric_add_qu_qu	(	Quadric *	a,
		const Quadric *	b )

Definition at line 115 of file quadric.c.

References add_vn_vn_d(), b, and QUADRIC_FLT_TOT.

Referenced by bm_decim_build_quadrics(), and bm_decim_edge_collapse().

BLI_quadric_add_qu_ququ()

void BLI_quadric_add_qu_ququ	(	Quadric *	r,
		const Quadric *	a,
		const Quadric *	b )

Definition at line 120 of file quadric.c.

References add_vn_vnvn_d(), b, and QUADRIC_FLT_TOT.

Referenced by bm_decim_calc_target_co_db().

BLI_quadric_clear()

void BLI_quadric_clear

(

Quadric *

q

)

Definition at line 110 of file quadric.c.

BLI_quadric_evaluate()

double BLI_quadric_evaluate	(	const Quadric *	q,
		const double	v[3] )

Definition at line 130 of file quadric.c.

References Quadric::a2, Quadric::ab, Quadric::ac, Quadric::ad, Quadric::b2, Quadric::bc, Quadric::bd, Quadric::c2, Quadric::cd, Quadric::d2, and v.

Referenced by bm_decim_build_edge_cost_single().

BLI_quadric_from_plane()

void BLI_quadric_from_plane	(	Quadric *	q,
		const double	v[4] )

Definition at line 31 of file quadric.c.

References Quadric::a2, Quadric::ab, Quadric::ac, Quadric::ad, Quadric::b2, Quadric::bc, Quadric::bd, Quadric::c2, Quadric::cd, Quadric::d2, and v.

Referenced by bm_decim_build_quadrics().

BLI_quadric_mul()

void BLI_quadric_mul	(	Quadric *	a,
		const double	scalar )

Definition at line 125 of file quadric.c.

References mul_vn_db(), and QUADRIC_FLT_TOT.

Referenced by bm_decim_build_quadrics().

BLI_quadric_optimize()

bool BLI_quadric_optimize	(	const Quadric *	q,
		double	v[3],
		const double	epsilon )

Definition at line 142 of file quadric.c.

References BLI_quadric_to_vector_v3(), mul_m3_v3_db(), negate_v3_db(), quadric_to_tensor_m3_inverse(), and v.

Referenced by bm_decim_calc_target_co_db().

BLI_quadric_to_vector_v3()

void BLI_quadric_to_vector_v3	(	const Quadric *	q,
		double	v[3] )

Definition at line 103 of file quadric.c.

References Quadric::ad, Quadric::bd, Quadric::cd, and v.

Referenced by BLI_quadric_optimize().

quadric_to_tensor_m3_inverse()

static bool quadric_to_tensor_m3_inverse ( const Quadric * q, double m[3][3], double epsilon )

static

Inline inverse matrix creation. Equivalent of:

quadric_to_tensor_m3(q, m);
invert_m3_db(m, eps);

Definition at line 76 of file quadric.c.

References Quadric::a2, Quadric::ab, Quadric::ac, Quadric::b2, Quadric::bc, Quadric::c2, and fabs().

Referenced by BLI_quadric_optimize().