mFrustum_c Class Reference

#include <game/mLib/m_frustum.hpp>

Inheritance diagram for mFrustum_c:

Description

A view frustum, used to cull objects outside of the camera's field of view.

Definition at line 10 of file m_frustum.hpp.

Public Member Functions
	mFrustum_c ()
	Constructs an empty frustum.
void	set (f32 fovy, f32 aspect, f32 n, f32 f, const mMtx_c &cameraMtx)
	Builds a symmetric perspective frustum.
void	set (f32 top, f32 bottom, f32 left, f32 right, f32 near, f32 far, const mMtx_c &cameraMtx, bool orthographic)
	Builds an arbitrary perspective or orthographic frustum.
bool	intersectSphere (const mSphere_c *sphere) const
	Checks whether the given sphere is at least partially inside the frustum.
bool	intersectAABB (const mAABB_c *box) const
	Checks whether the given bounding box is at least partially inside the frustum.

Constructor & Destructor Documentation

mFrustum_c()

mFrustum_c::mFrustum_c ( )

inline

Constructs an empty frustum.

Definition at line 12 of file m_frustum.hpp.

Member Function Documentation

set() [1/2]

void mFrustum_c::set	(	f32	fovy,
		f32	aspect,
		f32	n,
		f32	f,
		const mMtx_c &	cameraMtx )

Builds a symmetric perspective frustum.

Parameters

fovy	The vertical field of view, in degrees.
aspect	The aspect ratio (width / height).
near	The distance to the near clipping plane.
far	The distance to the far clipping plane.
cameraMtx	The matrix defining the camera's transform in world space.

Definition at line 4 of file m_frustum.cpp.

set() [2/2]

void mFrustum_c::set	(	f32	top,
		f32	bottom,
		f32	left,
		f32	right,
		f32	near,
		f32	far,
		const mMtx_c &	cameraMtx,
		bool	orthographic )

Builds an arbitrary perspective or orthographic frustum.

Parameters

top	The top boundary.
bottom	The bottom boundary.
left	The left boundary.
right	The right boundary.
near	The distance to the near clipping plane.
far	The distance to the far clipping plane.
cameraMtx	The matrix defining the camera's transform in world space.
orthographic	true for orthographic projection, false for perspective projection.

Definition at line 11 of file m_frustum.cpp.

intersectSphere()

bool mFrustum_c::intersectSphere

(

const mSphere_c *

sphere

)

const

Checks whether the given sphere is at least partially inside the frustum.

Definition at line 93 of file m_frustum.cpp.

intersectAABB()

bool mFrustum_c::intersectAABB

(

const mAABB_c *

box

)

const

Checks whether the given bounding box is at least partially inside the frustum.

Definition at line 132 of file m_frustum.cpp.