Shader program helping sources for general geometry concepts. More...

Static Public Member Functions
static nkMemory::StringView	nkGetSphereIntersection ()

static nkMemory::StringView	nkSphericalToDirection ()

static nkMemory::StringView	nkDirectionToUv ()

static nkMemory::StringView	nkUvToDirection ()

Detailed Description

Shader program helping sources for general geometry concepts.

Member Function Documentation

static nkMemory::StringView nkAstraeus::GeometryLib::nkGetSphereIntersection ( )

static

float nkGetSphereIntersection (nkFloat3 o, nkFloat3 d, float radius) ;

Provides with a sphere ray intersection algorithm.

Parameter	Description
o	The ray's origin position, relative to the sphere's center.
d	The normalized ray's direction.
radius	The sphere radius.
Returns
The distance at which the intersection happens, positive if forward, negative if behind. If no intersection is found, then -1.

The returned distance r allows to reconstruct the intersection position as such : p = r * d + o.

static nkMemory::StringView nkAstraeus::GeometryLib::nkSphericalToDirection ( )

static

nkFloat3 nkSphericalToDirection (float theta, float phi) ;

Converts spherical coordinates into a cartesian 3D direction.

Parameter	Description
theta	The theta angle of the input coordinates.
phi	The phi angle of the input coordinates.
Returns
The corresponding 3D direction.

static nkMemory::StringView nkAstraeus::GeometryLib::nkDirectionToUv ( )

static

nkFloat2 nkDirectionToUv (nkFloat3 direction) ;

Converts a world direction into a texture UV, by mapping it like a sphere.

Parameter	Description
direction	The direction to convert.
Returns
The corresponding texture UV, in [0, 1].

static nkMemory::StringView nkAstraeus::GeometryLib::nkUvToDirection ( )

static

nkFloat3 nkUvToDirection (nkFloat2 uv) ;

Converts a texture UV within [0, 1] to a world direction, by mapping it to a sphere.

Parameter	Description
uv	The UV to convert.
Returns
The corresponding normalized direction.

The documentation for this class was generated from the following file: