geom.h File Reference

Basic geometry functions. More...

#include "params.h"

Go to the source code of this file.

Macros
#define	vox_dot_add(a, b, res)
	Vector addition. More...
#define	vox_dot_sub(a, b, res)
	Vector subtraction. More...
#define	vox_dot_scmul(d, sc, res)
	Vector multiplication by a scalar. More...

Functions
VOX_EXPORT float	vox_abs_metric (const vox_dot dot1, const vox_dot dot2)
	Calculate fast metric between two dots. More...
VOX_EXPORT float	vox_sqr_metric (const vox_dot dot1, const vox_dot dot2)
	Calculate metric between two dots. More...
VOX_EXPORT float	vox_sqr_norm (const vox_dot dot)
	Calculate norm of a vector. More...

Detailed Description

Basic geometry functions.

Macro Definition Documentation

vox_dot_add

#define vox_dot_add	(		a,
			b,
			res
	)

Value:

    do { \
    res[0] = a[0] + b[0]; \
    res[1] = a[1] + b[1]; \
    res[2] = a[2] + b[2]; \
    }                     \
    while (0);

Vector addition.

vox_dot_scmul

#define vox_dot_scmul	(		d,
			sc,
			res
	)

Value:

    do { \
    res[0] = sc * d[0]; \
    res[1] = sc * d[1]; \
    res[2] = sc * d[2]; \
    }                   \
    while (0);

Vector multiplication by a scalar.

vox_dot_sub

#define vox_dot_sub	(		a,
			b,
			res
	)

Value:

    do { \
    res[0] = a[0] - b[0]; \
    res[1] = a[1] - b[1]; \
    res[2] = a[2] - b[2]; \
    }                     \
    while (0);

Vector subtraction.

Function Documentation

vox_abs_metric()

VOX_EXPORT float vox_abs_metric	(	const vox_dot	dot1,
		const vox_dot	dot2
	)

Calculate fast metric between two dots.

This is a fast metric on R^3 calculacted as sum of absolute values of by-coordinate differences between two dots.

vox_sqr_metric()

VOX_EXPORT float vox_sqr_metric	(	const vox_dot	dot1,
		const vox_dot	dot2
	)

Calculate metric between two dots.

This is a square of standard Euclidian metric on R^3

vox_sqr_norm()

VOX_EXPORT float vox_sqr_norm

(

const vox_dot

dot

)

Calculate norm of a vector.

This is a square of standard Euclidian norm on R^3