FrustumCull Class Reference

Class for frustum-culling. More...

#include <FrustumCull.h>

Public Types
enum	Classification { OUTSIDE, INTERSECT, INSIDE }

Public Member Functions
void	setCamInternals (float angle, float ratio, float nearD, float farD)
void	setCamDef (const glm::vec3 &p, const glm::vec3 &l, const glm::vec3 &u)
Classification	pointInFrustum (const glm::vec3 &p) const
Classification	sphereInFrustum (const glm::vec3 &p, float raio) const

Detailed Description

Class for frustum-culling.

Member Enumeration Documentation

Classification

enum FrustumCull::Classification

Enum for classification of intersection

Member Function Documentation

pointInFrustum()

FrustumCull::Classification FrustumCull::pointInFrustum

(

const glm::vec3 &

p

)

const

Checks if a point lies inside the frustum region

Parameters

p	coordinates of the point to check

Returns

INSIDE or OUTSIDE depending on if the point lies inside or outside of the frustum region

setCamDef()

void FrustumCull::setCamDef	(	const glm::vec3 &	p,
		const glm::vec3 &	l,
		const glm::vec3 &	u
	)

Sets the parameters needed for calculation of frustum planes. These parameters come from the camera position and orientation. Calling this function updates the Culling Planes.

Parameters

p	position of camera
l	coordinates of point where the camera looks at / focus point.
u	Vector pointing up from the camera.
l,u	define the camera coordinate system.

setCamInternals()

void FrustumCull::setCamInternals	(	float	angle,
		float	ratio,
		float	nearD,
		float	farD
	)

Sets the parameters needed for calculation of frustum planes. These parameters come from the camera projection

Parameters

angle	Field of view of camera in degrees.
ratio	Aspect ratio.
nearD	Near plane z.
farD	Far plane z.

sphereInFrustum()

FrustumCull::Classification FrustumCull::sphereInFrustum	(	const glm::vec3 &	p,
		float	raio
	)		const

Checks the intersection of a sphere with the frustum region

Parameters

p	coordinates of the center of the sphere.
raio	radius of the sphere

Returns

INSIDE, INTERSECT or OUTSIDE, depending if the circle lies totally inside or partially inside or outside the frustum region

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

• Renderer/FrustumCull.h
• Renderer/FrustumCull.cpp