nirt::scene::SViewFrustum Class Reference

Defines the view frustum. That's the space visible by the camera. More...

#include <nirtcpp/core/engine/SViewFrustum.hpp>

Collaboration diagram for nirt::scene::SViewFrustum:

Public Types
enum	VFPLANES {   VF_FAR_PLANE = 0 , VF_NEAR_PLANE , VF_LEFT_PLANE , VF_RIGHT_PLANE ,   VF_BOTTOM_PLANE , VF_TOP_PLANE , VF_PLANE_COUNT }

Public Member Functions
	SViewFrustum ()
	Default Constructor.
	SViewFrustum (const core::matrix4 &mat, bool zClipFromZero)
	This constructor creates a view frustum based on a projection and/or view matrix.
void	setFrom (const core::matrix4 &mat, bool zClipFromZero)
	This constructor creates a view frustum based on a projection and/or view matrix.
void	transform (const core::matrix4 &mat)
	transforms the frustum by the matrix
core::vector3df	getFarLeftUp () const
	returns the point which is on the far left upper corner inside the the view frustum.
core::vector3df	getFarLeftDown () const
	returns the point which is on the far left bottom corner inside the the view frustum.
core::vector3df	getFarRightUp () const
	returns the point which is on the far right top corner inside the the view frustum.
core::vector3df	getFarRightDown () const
	returns the point which is on the far right bottom corner inside the the view frustum.
core::vector3df	getNearLeftUp () const
	returns the point which is on the near left upper corner inside the the view frustum.
core::vector3df	getNearLeftDown () const
	returns the point which is on the near left bottom corner inside the the view frustum.
core::vector3df	getNearRightUp () const
	returns the point which is on the near right top corner inside the the view frustum.
core::vector3df	getNearRightDown () const
	returns the point which is on the near right bottom corner inside the the view frustum.
const core::aabbox3d< f32 > &	getBoundingBox () const
	returns a bounding box enclosing the whole view frustum
void	recalculateBoundingBox ()
	recalculates the bounding box and sphere based on the planes
float	getBoundingRadius () const
	get the bounding sphere's radius (of an optimized sphere, not the AABB's)
core::vector3df	getBoundingCenter () const
	get the bounding sphere's radius (of an optimized sphere, not the AABB's)
void	setFarNearDistance (float distance)
	the cam should tell the frustum the distance between far and near
core::matrix4 &	getTransform (video::E_TRANSFORMATION_STATE state)
	get the given state's matrix based on frustum E_TRANSFORMATION_STATE
const core::matrix4 &	getTransform (video::E_TRANSFORMATION_STATE state) const
	get the given state's matrix based on frustum E_TRANSFORMATION_STATE
bool	clipLine (core::line3d< f32 > &line) const
	clips a line to the view frustum.

Public Attributes
core::vector3df	cameraPosition
	the position of the camera
core::plane3d< f32 >	planes [VF_PLANE_COUNT]
	all planes enclosing the view frustum.
core::aabbox3d< f32 >	boundingBox
	bounding box around the view frustum

Detailed Description

Defines the view frustum. That's the space visible by the camera.

The view frustum is enclosed by 6 planes. These six planes share eight points. A bounding box around these eight points is also stored in this structure.

Member Enumeration Documentation

VFPLANES

enum nirt::scene::SViewFrustum::VFPLANES

Enumerator
VF_FAR_PLANE	Far plane of the frustum. That is the plane furthest away from the eye.
VF_NEAR_PLANE	Near plane of the frustum. That is the plane nearest to the eye.
VF_LEFT_PLANE	Left plane of the frustum.
VF_RIGHT_PLANE	Right plane of the frustum.
VF_BOTTOM_PLANE	Bottom plane of the frustum.
VF_TOP_PLANE	Top plane of the frustum.
VF_PLANE_COUNT	Amount of planes enclosing the view frustum. Should be 6.

Member Function Documentation

clipLine()

bool nirt::scene::SViewFrustum::clipLine ( core::line3d< f32 > &  line ) const

inline

clips a line to the view frustum.

Clips a line to the frustum.

Returns

True if the line was clipped, false if not

getTransform() [1/2]

core::matrix4 & nirt::scene::SViewFrustum::getTransform ( video::E_TRANSFORMATION_STATE  state )

inline

get the given state's matrix based on frustum E_TRANSFORMATION_STATE

View Frustum depends on Projection & View Matrix

getTransform() [2/2]

const core::matrix4 & nirt::scene::SViewFrustum::getTransform ( video::E_TRANSFORMATION_STATE  state ) const

inline

get the given state's matrix based on frustum E_TRANSFORMATION_STATE

View Frustum depends on Projection & View Matrix

setFrom()

void nirt::scene::SViewFrustum::setFrom ( const core::matrix4 &  mat, bool  zClipFromZero  )

inline

This constructor creates a view frustum based on a projection and/or view matrix.

This constructor creates a view frustum based on a projection and/or view matrix.

transform()

void nirt::scene::SViewFrustum::transform ( const core::matrix4 &  mat )

inline

transforms the frustum by the matrix

Parameters

mat	Matrix by which the view frustum is transformed.

---

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

• include/nirtcpp/core/engine/SViewFrustum.hpp