voxel.c File Reference

#include "BLI_utildefines.h"
#include "BLI_voxel.h"
#include "BLI_strict_flags.h"

Go to the source code of this file.

Functions
BLI_INLINE float	D (const float *data, const int res[3], int x, int y, int z)
BLI_INLINE int	FLOORI (float x)
BLI_INLINE int64_t	_clamp (int a, int b, int c)
float	BLI_voxel_sample_trilinear (const float *data, const int res[3], const float co[3])

Function Documentation

_clamp()

BLI_INLINE int64_t _clamp	(	int	a,
		int	b,
		int	c )

clamp function, cannot use the CLAMPIS macro, it sometimes returns unwanted results apparently related to gcc optimization flag -fstrict-overflow which is enabled at -O2

this causes the test (x + 2) < 0 with int x == 2147483647 to return false (x being an integer, x + 2 should wrap around to -2147483647 so the test < 0 should return true, which it doesn't).

Definition at line 39 of file voxel.c.

References b.

Referenced by BLI_voxel_sample_trilinear().

BLI_voxel_sample_trilinear()

float BLI_voxel_sample_trilinear	(	const float *	data,
		const int	res[3],
		const float	co[3] )

Definition at line 44 of file voxel.c.

References _clamp(), float, FLOORI(), v, w(), and z().

D()

BLI_INLINE float D	(	const float *	data,
		const int	res[3],
		int	x,
		int	y,
		int	z )

Definition at line 14 of file voxel.c.

References BLI_VOXEL_INDEX, CLAMP, and z().

FLOORI()

BLI_INLINE int FLOORI

(

float

x

)

Definition at line 25 of file voxel.c.

References float, and int.

Referenced by BLI_voxel_sample_trilinear().