EBGeometry::InfiniteConeSDF< T > Class Template Reference

Signed distance field for an infinite cone. More...

#include <EBGeometry_AnalyticDistanceFunctions.hpp>

Public Member Functions
	InfiniteConeSDF ()=default
	Default constructor. Constructs an infinite cone with tip at the origin, 45° full opening angle, and body extending in the -y direction.
	InfiniteConeSDF (const Vec3T< T > &a_tip, const T &a_angle) noexcept
	Full constructor.
	InfiniteConeSDF (const InfiniteConeSDF &)=default
	Copy constructor.
	InfiniteConeSDF (InfiniteConeSDF &&)=default
	Move constructor.
InfiniteConeSDF &	operator= (const InfiniteConeSDF &)=default
	Copy assignment.
InfiniteConeSDF &	operator= (InfiniteConeSDF &&)=default
	Move assignment.
T	signedDistance (const Vec3T< T > &a_point) const noexcept
	Signed distance function for the infinite cone.
BoundingVolumes::AABBT< T >	computeBoundingVolume () const noexcept
	The shape's axis-aligned bounding box.

Static Public Attributes
static constexpr DistanceQuality	distanceQuality = DistanceQuality::Exact
	How far signedDistance() can be trusted as a distance: the Euclidean distance to the surface.

Protected Attributes
Vec3T< T >	m_tip = Vec3T<T>::zeros()
	Tip position.
Vec2T< T >	m_c = Vec2T<T>(std::sin(pi<T> / T(8)), std::cos(pi<T> / T(8)))
	(sin, cos) of the half opening-angle. Default: 45° full angle → half-angle 22.5°.

Detailed Description

template<class T>
class EBGeometry::InfiniteConeSDF< T >

Signed distance field for an infinite cone.

The cone tip is at m_tip. The cone body opens in the -y direction from the tip (the interior, where SDF < 0, is the solid region extending downward along -y within the cone surface). The full opening angle a_angle (tip-to-tip across the cone) is halved internally; the half-angle is stored as m_c = (std::sin(half_angle), std::cos(half_angle)).

For a 45° full opening angle the half-angle is 22.5°; a point directly below the tip at depth d sits on the cone surface when its radial distance from the axis equals d * std::tan(half_angle).

The cone is infinite: it has no base plane. By default the tip is at the origin and the full opening angle is 45°, with the body extending along -y.

Template Parameters

T	Floating-point precision.

Constructor & Destructor Documentation

InfiniteConeSDF()

template<class T >

EBGeometry::InfiniteConeSDF< T >::InfiniteConeSDF ( const Vec3T< T > &  a_tip, const T &  a_angle  )

inlinenoexcept

Full constructor.

Parameters

[in]	a_tip	Cone tip position.
[in]	a_angle	Full opening angle in degrees (must be in (0°, 180°)). The half-angle a_angle / 2 is used internally and encoded as m_c = (sin, cos) of that half-angle.

Member Function Documentation

computeBoundingVolume()

template<class T >

BoundingVolumes::AABBT< T > EBGeometry::InfiniteConeSDF< T >::computeBoundingVolume ( ) const

inlinenoexcept

The shape's axis-aligned bounding box.

Bounded above by the tip in y, and unbounded below it and in x and z.

Returns

The bounding box.

operator=() [1/2]

template<class T >

InfiniteConeSDF & EBGeometry::InfiniteConeSDF< T >::operator= ( const InfiniteConeSDF< T > &  )

default

Copy assignment.

Returns

Reference to (*this).

operator=() [2/2]

template<class T >

InfiniteConeSDF & EBGeometry::InfiniteConeSDF< T >::operator= ( InfiniteConeSDF< T > &&  )

default

Move assignment.

Returns

Reference to (*this).

signedDistance()

template<class T >

T EBGeometry::InfiniteConeSDF< T >::signedDistance ( const Vec3T< T > &  a_point ) const

inlinenoexcept

Signed distance function for the infinite cone.

Parameters

[in]

a_point

Position.

Returns

Signed distance from a_point to the cone surface; negative inside the cone.

---

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

• Source/EBGeometry_AnalyticDistanceFunctions.hpp