Horizontal and vertical field of view (FOV) halves, allowing a non-centered projection. More...

#include <fov_hv_halves.hpp>

Collaboration diagram for jau::math::FovHVHalves:

Public Member Functions
constexpr	FovHVHalves (const float left_, const float right_, const float top_, const float bottom_, const bool inTangents_) noexcept
	Constructor for one `FovHVHalves` instance.

constexpr	FovHVHalves (const FovHVHalves &o) noexcept=default

constexpr	FovHVHalves (FovHVHalves &&o) noexcept=default

float	horzFov () const noexcept
	Returns the full horizontal FOV, i.e.

constexpr FovHVHalves &	operator= (const FovHVHalves &) noexcept=default

constexpr FovHVHalves &	operator= (FovHVHalves &&) noexcept=default

std::string	toString () const noexcept

std::string	toStringInDegrees () const noexcept

FovHVHalves	toTangents () const noexcept
	Returns this instance in tangent values.

float	vertFov () const noexcept
	Returns the full vertical FOV, i.e.

Static Public Member Functions
static FovHVHalves	byFovyRadianAndAspect (const float verticalFov, const float aspect) noexcept
	Returns a symmetrical centered `FovHVHalves` instance in `inTangents`, using:

static FovHVHalves	byFovyRadianAndAspect (const float verticalFov, const float vertCenterFromTop, const float aspect, const float horizCenterFromLeft) noexcept
	Returns a custom symmetry `FovHVHalves` instance `inTangents`, via computing the `horizontalFov` using:

static FovHVHalves	byRadians (const float horizontalFov, const float horizCenterFromLeft, const float verticalFov, const float vertCenterFromTop) noexcept
	Returns a custom symmetry `FovHVHalves` instance `inTangents`, using:

static FovHVHalves	byRadians (const float horizontalFov, const float verticalFov) noexcept
	Returns a symmetrical centered `FovHVHalves` instance in `inTangents`, using:

Public Attributes
float	bottom
	Half vertical FOV from center to bottom, either in `inTangents` or radians.

bool	inTangents
	If true, values are in tangent, otherwise radians.

float	left
	Half horizontal FOV from center to left, either in `inTangents` or radians.

float	right
	Half horizontal FOV from center to right, either in `inTangents` or radians.

float	top
	Half vertical FOV from center to top, either in `inTangents` or radians.

Detailed Description

Horizontal and vertical field of view (FOV) halves, allowing a non-centered projection.

The values might be either in tangent or radians.

Definition at line 35 of file fov_hv_halves.hpp.

Constructor & Destructor Documentation

◆ FovHVHalves() [1/3]

jau::math::FovHVHalves::FovHVHalves	(	const float	left_,
		const float	right_,
		const float	top_,
		const float	bottom_,
		const bool	inTangents_ )

inlineconstexprnoexcept

Constructor for one FovHVHalves instance.

It is recommended to pass and store values in tangent if used for perspective FOV calculations, since it will avoid conversion to tangent later on.

Parameters

left_	half horizontal FOV, left side, in tangent or radians
right_	half horizontal FOV, right side, in tangent or radians
top_	half vertical FOV, top side, in tangent or radians
bottom_	half vertical FOV, bottom side, in tangent or radians
inTangents_	if true, values are in tangent, otherwise radians

Definition at line 60 of file fov_hv_halves.hpp.

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◆ FovHVHalves() [2/3]

jau::math::FovHVHalves::FovHVHalves ( const FovHVHalves & o )

constexprdefaultnoexcept

◆ FovHVHalves() [3/3]

jau::math::FovHVHalves::FovHVHalves ( FovHVHalves && o )

constexprdefaultnoexcept

Member Function Documentation

◆ operator=() [1/2]

FovHVHalves & jau::math::FovHVHalves::operator= ( const FovHVHalves & )

constexprdefaultnoexcept

◆ operator=() [2/2]

FovHVHalves & jau::math::FovHVHalves::operator= ( FovHVHalves && )

constexprdefaultnoexcept

◆ byRadians() [1/2]

static FovHVHalves jau::math::FovHVHalves::byRadians	(	const float	horizontalFov,
		const float	verticalFov )

inlinestaticnoexcept

Returns a symmetrical centered FovHVHalves instance in inTangents, using:

 halfHorizFovTan = tan( horizontalFov / 2f );
 halfVertFovTan  = tan( verticalFov / 2f );

Parameters

horizontalFov	whole horizontal FOV in radians
verticalFov	whole vertical FOV in radians

Definition at line 77 of file fov_hv_halves.hpp.

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◆ byFovyRadianAndAspect() [1/2]

static FovHVHalves jau::math::FovHVHalves::byFovyRadianAndAspect	(	const float	verticalFov,
		const float	aspect )

inlinestaticnoexcept

Returns a symmetrical centered FovHVHalves instance in inTangents, using:

 top  = bottom = tan( verticalFov / 2f );
 left =  right = aspect * top;

Parameters

verticalFov	vertical FOV in radians
aspect	aspect ration width / height

Definition at line 93 of file fov_hv_halves.hpp.

◆ byRadians() [2/2]

static FovHVHalves jau::math::FovHVHalves::byRadians	(	const float	horizontalFov,
		const float	horizCenterFromLeft,
		const float	verticalFov,
		const float	vertCenterFromTop )

inlinestaticnoexcept

Returns a custom symmetry FovHVHalves instance inTangents, using:

 left   = tan( horizontalFov * horizCenterFromLeft )
 right  = tan( horizontalFov * ( 1f - horizCenterFromLeft ) )
 top    = tan( verticalFov   * vertCenterFromTop )
 bottom = tan( verticalFov   * (1f - vertCenterFromTop ) )

Parameters

horizontalFov	whole horizontal FOV in radians
horizCenterFromLeft	horizontal center from left in [0..1]
verticalFov	whole vertical FOV in radians
vertCenterFromTop	vertical center from top in [0..1]

Definition at line 113 of file fov_hv_halves.hpp.

◆ byFovyRadianAndAspect() [2/2]

static FovHVHalves jau::math::FovHVHalves::byFovyRadianAndAspect	(	const float	verticalFov,
		const float	vertCenterFromTop,
		const float	aspect,
		const float	horizCenterFromLeft )

inlinestaticnoexcept

Returns a custom symmetry FovHVHalves instance inTangents, via computing the horizontalFov using:

 halfVertFovTan  = tan( verticalFov / 2f );
 halfHorizFovTan = aspect * halfVertFovTan;
 horizontalFov   = atan( halfHorizFovTan ) * 2f;
 return  byRadians(horizontalFov, horizCenterFromLeft, verticalFov, vertCenterFromTop)

Parameters

verticalFov	whole vertical FOV in radians
vertCenterFromTop	vertical center from top in [0..1]
aspect	aspect ration width / height
horizCenterFromLeft	horizontal center from left in [0..1]

Definition at line 136 of file fov_hv_halves.hpp.

◆ toTangents()

FovHVHalves jau::math::FovHVHalves::toTangents ( ) const

inlinenoexcept

Returns this instance in tangent values.

If this instance is inTangents already, method returns a copy of this instance, otherwise a newly created instance w/ converted values to tangent.

Definition at line 151 of file fov_hv_halves.hpp.

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◆ horzFov()

float jau::math::FovHVHalves::horzFov ( ) const

inlinenoexcept

Returns the full horizontal FOV, i.e.

left + right, either in inTangents or radians.

Definition at line 160 of file fov_hv_halves.hpp.

◆ vertFov()

float jau::math::FovHVHalves::vertFov ( ) const

inlinenoexcept

Returns the full vertical FOV, i.e.

top + bottom, either in inTangents or radians.

Definition at line 163 of file fov_hv_halves.hpp.

◆ toString()

std::string jau::math::FovHVHalves::toString ( ) const

inlinenoexcept

Definition at line 165 of file fov_hv_halves.hpp.

◆ toStringInDegrees()

std::string jau::math::FovHVHalves::toStringInDegrees ( ) const

inlinenoexcept

Definition at line 169 of file fov_hv_halves.hpp.

Member Data Documentation

◆ left

float jau::math::FovHVHalves::left

Half horizontal FOV from center to left, either in inTangents or radians.

Definition at line 38 of file fov_hv_halves.hpp.

◆ right

float jau::math::FovHVHalves::right

Half horizontal FOV from center to right, either in inTangents or radians.

Definition at line 40 of file fov_hv_halves.hpp.

◆ top

float jau::math::FovHVHalves::top

Half vertical FOV from center to top, either in inTangents or radians.

Definition at line 42 of file fov_hv_halves.hpp.

◆ bottom

float jau::math::FovHVHalves::bottom

Half vertical FOV from center to bottom, either in inTangents or radians.

Definition at line 44 of file fov_hv_halves.hpp.

◆ inTangents

bool jau::math::FovHVHalves::inTangents

If true, values are in tangent, otherwise radians.

Definition at line 46 of file fov_hv_halves.hpp.

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

jaulib/include/jau/math/fov_hv_halves.hpp

Public Member Functions

Static Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ FovHVHalves() [1/3]

◆ FovHVHalves() [2/3]

◆ FovHVHalves() [3/3]

Member Function Documentation

◆ operator=() [1/2]

◆ operator=() [2/2]

◆ byRadians() [1/2]

◆ byFovyRadianAndAspect() [1/2]

◆ byRadians() [2/2]

◆ byFovyRadianAndAspect() [2/2]

◆ toTangents()

◆ horzFov()

◆ vertFov()

◆ toString()

◆ toStringInDegrees()

Member Data Documentation

◆ left

◆ right

◆ top

◆ bottom

◆ inTangents