iPerspectiveCamera Struct Reference
[Views & Cameras]

An implementation of iCamera that renders a world with a classical perspective. More...

#include <iengine/camera.h>

Inheritance diagram for iPerspectiveCamera:

[legend]

List of all members.

Public Member Functions
virtual iCamera *	GetCamera ()=0
	Get the iCamera interface for this camera.
virtual float	GetFOV () const =0
	Return the normalized FOV (field of view).
virtual float	GetFOVAngle () const =0
	Return the FOV (field of view) in degrees.
virtual float	GetInvFOV () const =0
	Return the inverse of normalized field of view (1/FOV).
virtual float	GetNearClipDistance () const =0
	Get the near clip distance of this camera.
virtual float	GetShiftX () const =0
	Get the X shift amount.
virtual float	GetShiftY () const =0
	Get the Y shift amount.
virtual void	SetFOV (float fov, float width)=0
	Set the FOV.
virtual void	SetFOVAngle (float fov, float width)=0
	Set the FOV in degrees.
virtual void	SetNearClipDistance (float dist)=0
	Set near clip distance of this camera.
virtual void	SetPerspectiveCenter (float x, float y)=0
	Set the shift amount.

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Detailed Description

An implementation of iCamera that renders a world with a classical perspective.

Main creators of instances implementing this interface:

• iEngine::CreatePerspectiveCamera()

Main ways to get pointers to this interface:

• iView::GetPerspectiveCamera()

Definition at line 350 of file camera.h.

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Member Function Documentation

virtual iCamera* iPerspectiveCamera::GetCamera

(

)

[pure virtual]

Get the iCamera interface for this camera.

virtual float iPerspectiveCamera::GetFOV

(

)

const [pure virtual]

Return the normalized FOV (field of view).

virtual float iPerspectiveCamera::GetFOVAngle

(

)

const [pure virtual]

Return the FOV (field of view) in degrees.

virtual float iPerspectiveCamera::GetInvFOV

(

)

const [pure virtual]

Return the inverse of normalized field of view (1/FOV).

virtual float iPerspectiveCamera::GetNearClipDistance

(

)

const [pure virtual]

Get the near clip distance of this camera.

Higher clip distances increases the possibility that the camera may look "inside" some geometry, however, it also provides higher depth value precision - especially for large scenes this can prevent depth buffer issues (Z-fighting, wrong occlusion) at a distance.

If you have a collider (player etc.) coupled to camera movement a good initial value for the near clip distance is a value slightly above the collider radius.

virtual float iPerspectiveCamera::GetShiftX

(

)

const [pure virtual]

Get the X shift amount.

The parameter specified the desired X coordinate on the normalized screen of the projection center of the camera.

virtual float iPerspectiveCamera::GetShiftY

(

)

const [pure virtual]

Get the Y shift amount.

The parameter specified the desired Y coordinate on the normalized screen of the projection center of the camera.

virtual void iPerspectiveCamera::SetFOV	(	float	fov,
		float	width
	)			[pure virtual]

Set the FOV.

fov is the desired FOV in normalized screen coordinates. width is the display width, also normalized.

virtual void iPerspectiveCamera::SetFOVAngle	(	float	fov,
		float	width
	)			[pure virtual]

Set the FOV in degrees.

fov is the desired FOV in degrees. width is the display width in normalized screen coordinates.

virtual void iPerspectiveCamera::SetNearClipDistance

(

float

dist

)

[pure virtual]

Set near clip distance of this camera.

The default near clipping distance is controlled by the engine.

virtual void iPerspectiveCamera::SetPerspectiveCenter	(	float	x,
		float	y
	)			[pure virtual]

Set the shift amount.

The parameter specified the desired projection center of the camera on the normalized screen.

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

• iengine/camera.h