DoubleUnitVec3D.h File Reference

Defines the DoubleUnitVec3D class and some functions around it. More...

#include "DoubleVec3D.h"

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Classes
class	DoubleUnitVec3D
	A three-dimensional unit vector using doubles. More...

Functions
DoubleUnitVec3D	operator- (const DoubleUnitVec3D &vec)
	Unary minus. More...
DoubleUnitVec3D	randomVectorOnUnitRadiusSphere ()
	Generates a random unit vector on a sphere. More...

Detailed Description

Defines the DoubleUnitVec3D class and some functions around it.

Function Documentation

operator-()

DoubleUnitVec3D operator-

(

const DoubleUnitVec3D &

vec

)

Unary minus.

Allows to skip the conversion from DoubleVec3D to DoubleUnitVec3D.

Parameters

vec	The vector that will be inversed.

Returns

The inverse of vec.

randomVectorOnUnitRadiusSphere()

DoubleUnitVec3D randomVectorOnUnitRadiusSphere

(

)

Generates a random unit vector on a sphere.

Every vector has the same probability to show up. We can combine this function with a dot product between the resulting vector and a normal to a surface. If we inverse the vector when the dot product is negative, then we get a random vector on a unit hemisphere.

Returns

A random unit vector on a sphere.

See also

Sphere::getRandomPoint()