class Geo::GeoBoundingBox

This class represents an axis aligned bounding box.

Variables

Functions

bool Geo::GeoBoundingBox::AddDebugLines

public: bool AddDebugLines
(
    Geo::GeoArray< DebugLine > & lines
) const

Appends to the contents of the given array with the lines making up the bounding box.

float Geo::GeoBoundingBox::CalculateSolidAngle

public: float CalculateSolidAngle
(
    v128 const & viewPos
) const

calculates the solid angle of the box as visible from viewPos

Geo::v128 Geo::GeoBoundingBox::ClosestPointInBox

public: Geo::v128 ClosestPointInBox
(
    const Geo::v128 & p
) const

Compute the closest point in the box to p.

bool Geo::GeoBoundingBox::ContainsBox

public: bool ContainsBox
(
    const Geo::GeoBoundingBox & rhs
) const

Is a box contained by the box?

bool Geo::GeoBoundingBox::ContainsPoint

public: bool ContainsPoint
(
    const Geo::v128 & p
) const

Is a point in the box?

bool Geo::GeoBoundingBox::ContainsPoint2D

public: bool ContainsPoint2D
(
    const Geo::v128 & p
) const

Is a point in the box? Only tests xy.

void Geo::GeoBoundingBox::EnclosePoint

public: void EnclosePoint
(
    const v128 & point
)

Enlarge this bounding box to include the given point.

void Geo::GeoBoundingBox::ExpandBy

public: void ExpandBy
(
    const v128 & expansion
)

Expands this bounding box by the given amount in each of the three axes (in both directions).

Geo::GeoBoundingBox::GeoBoundingBox

public: GeoBoundingBox()

Constructor - makes an empty bounding box.

Geo::GeoBoundingBox::GeoBoundingBox

public: GeoBoundingBox
(
    float x1,
    float y1,
    float z1,
    float x2,
    float y2,
    float z2
)

Create a bounding box defined by two extreme points.

Geo::GeoBoundingBox::GeoBoundingBox

public: GeoBoundingBox
(
    const GeoBoundingBox & from
)

Copy Constructor.

v128 Geo::GeoBoundingBox::GetCenter

public: v128 GetCenter() const

Return the center of this bounding box.

void Geo::GeoBoundingBox::GetCorners

public: void GetCorners
(
    v128 * corners
) const

Return the 8 corner points.

bool Geo::GeoBoundingBox::GetDebugLines

public: bool GetDebugLines
(
    Geo::GeoArray< DebugLine > & lines
) const

Replaces the contents of the given array with the lines making up the bounding box.

float Geo::GeoBoundingBox::GetDistanceFrom

public: float GetDistanceFrom
(
    const GeoBoundingBox & rhs
) const

Distance between two bounding boxes (0 if they intersect)

float Geo::GeoBoundingBox::GetLargestFace

public: float GetLargestFace() const

Return the largest face of this bounding box.

float Geo::GeoBoundingBox::GetLongestSide

public: float GetLongestSide() const

Return the longest side of this bounding box.

Geo::s32 Geo::GeoBoundingBox::GetLongestSideIdx

public: Geo::s32 GetLongestSideIdx() const

Returns the index of the longest axis.

v128 Geo::GeoBoundingBox::GetMax

public: v128 GetMax() const

Return the maxumum in each axis of this bounding box.

v128 Geo::GeoBoundingBox::GetMin

public: v128 GetMin() const

Return the minimum in each axis of this bounding box.

float Geo::GeoBoundingBox::GetShortestSide

public: float GetShortestSide() const

Return the shortest side of this bounding box.

v128 Geo::GeoBoundingBox::GetSize

public: v128 GetSize() const

Return the size of this bounding box in each axis.

float Geo::GeoBoundingBox::GetSurfaceArea

public: float GetSurfaceArea() const

Return the surface area of this bounding box.

float Geo::GeoBoundingBox::GetVolume

public: float GetVolume() const

Return the volume of this bounding box.

bool Geo::GeoBoundingBox::IntersectsBoundingBox

public: bool IntersectsBoundingBox
(
    const GeoBoundingBox & rhs
) const

Returns true if the bounding boxes mutually olaps.

bool Geo::GeoBoundingBox::IntersectsLightCone

public: bool IntersectsLightCone
(
    const Geo::v128 & lightPosition,
    const Geo::v128 & lightDirection,
    float coneAngle,
    float cutOff
) const

Returns true if the bounding box intersects the light cone.

bool Geo::GeoBoundingBox::IntersectsRay

public: bool IntersectsRay
(
    const Geo::v128 & rayPosition,
    const Geo::v128 & rayDirection,
    float & tHit
) const

Returns true if the bounding box intersects the ray. If intersects then tHit return the distance to the hit.

bool Geo::GeoBoundingBox::IntersectsSphere

public: bool IntersectsSphere
(
    Geo::v128 centre,
    float radius
) const

Returns true if the bounding box overlaps the sphere.

bool Geo::GeoBoundingBox::IntersectsSphere

public: bool IntersectsSphere
(
    const GeoBoundingSphere & bSphere
) const

Returns true if the bounding box overlaps the sphere.

bool Geo::GeoBoundingBox::IsEmpty

public: bool IsEmpty() const

Returns true if the bbox is empty (ie uninitialised)

const v128 & Geo::GeoBoundingBox::operator[]

public: const v128 & operator[]
(
    Geo::u32 index
) const

Indexed access to the two extreme points that define this bounding box (index must be 0 or 1).

GeoBoundingBox Geo::GeoBoundingBox::operator+

public: GeoBoundingBox operator+
(
    const GeoBoundingBox & rhs
) const

Compute and return the union of this bounding with another.

GeoBoundingBox & Geo::GeoBoundingBox::operator+=

public: GeoBoundingBox & operator+=
(
    const v128 & rhs
)

Enlarge this bounding box to include the given point.

GeoBoundingBox & Geo::GeoBoundingBox::operator+=

public: GeoBoundingBox & operator+=
(
    const GeoBoundingBox & rhs
)

Compute the inplace union of this bounding box and another.

void Geo::GeoBoundingBox::SetEmpty

public: void SetEmpty()

Resets the box to it's default empty state.

GeoBoundingBox Geo::GeoBoundingBox::Transform

public: GeoBoundingBox Transform
(
    const Geo::Matrix & transform
) const

Returns a new transformed bounding box.