DoubleUnitVec3D.cpp File Reference

#include "DoubleUnitVec3D.h"

Include dependency graph for DoubleUnitVec3D.cpp:

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

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()