Functions
template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	frustum (T left, T right, T bottom, T top, T near, T far)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	frustumLH (T left, T right, T bottom, T top, T near, T far)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	frustumRH (T left, T right, T bottom, T top, T near, T far)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	infinitePerspective (T fovy, T aspect, T near)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	infinitePerspectiveLH (T fovy, T aspect, T near)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	infinitePerspectiveRH (T fovy, T aspect, T near)

template<typename T , precision P>
GLM_FUNC_DECL tmat4x4< T, P >	lookAt (tvec3< T, P > const &eye, tvec3< T, P > const &center, tvec3< T, P > const &up)

template<typename T , precision P>
GLM_FUNC_DECL tmat4x4< T, P >	lookAtLH (tvec3< T, P > const &eye, tvec3< T, P > const &center, tvec3< T, P > const &up)

template<typename T , precision P>
GLM_FUNC_DECL tmat4x4< T, P >	lookAtRH (tvec3< T, P > const &eye, tvec3< T, P > const &center, tvec3< T, P > const &up)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	ortho (T left, T right, T bottom, T top, T zNear, T zFar)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	ortho (T left, T right, T bottom, T top)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	orthoLH (T left, T right, T bottom, T top, T zNear, T zFar)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	orthoRH (T left, T right, T bottom, T top, T zNear, T zFar)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	perspective (T fovy, T aspect, T near, T far)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	perspectiveFov (T fov, T width, T height, T near, T far)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	perspectiveFovLH (T fov, T width, T height, T near, T far)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	perspectiveFovRH (T fov, T width, T height, T near, T far)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	perspectiveLH (T fovy, T aspect, T near, T far)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	perspectiveRH (T fovy, T aspect, T near, T far)

template<typename T , precision P, typename U >
GLM_FUNC_DECL tmat4x4< T, P >	pickMatrix (tvec2< T, P > const &center, tvec2< T, P > const &delta, tvec4< U, P > const &viewport)

template<typename T , typename U , precision P>
GLM_FUNC_DECL tvec3< T, P >	project (tvec3< T, P > const &obj, tmat4x4< T, P > const &model, tmat4x4< T, P > const &proj, tvec4< U, P > const &viewport)

template<typename T , precision P>
GLM_FUNC_DECL tmat4x4< T, P >	rotate (tmat4x4< T, P > const &m, T angle, tvec3< T, P > const &axis)

template<typename T , precision P>
GLM_FUNC_DECL tmat4x4< T, P >	scale (tmat4x4< T, P > const &m, tvec3< T, P > const &v)

template<typename T , precision P>
GLM_FUNC_DECL tmat4x4< T, P >	translate (tmat4x4< T, P > const &m, tvec3< T, P > const &v)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	tweakedInfinitePerspective (T fovy, T aspect, T near)

template<typename T >
GLM_FUNC_DECL tmat4x4< T, defaultp >	tweakedInfinitePerspective (T fovy, T aspect, T near, T ep)

template<typename T , typename U , precision P>
GLM_FUNC_DECL tvec3< T, P >	unProject (tvec3< T, P > const &win, tmat4x4< T, P > const &model, tmat4x4< T, P > const &proj, tvec4< U, P > const &viewport)

Detailed Description

Defines functions that generate common transformation matrices.

The matrices generated by this extension use standard OpenGL fixed-function conventions. For example, the lookAt function generates a transform from world space into the specific eye space that the projective matrix functions (perspective, ortho, etc) are designed to expect. The OpenGL compatibility specifications defines the particular layout of this eye space.

<glm/gtc/matrix_transform.hpp> need to be included to use these functionalities.

Function Documentation

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::frustum	(	T	left,
		T	right,
		T	bottom,
		T	top,
		T	near,
		T	far
	)

Creates a frustum matrix with default handedness.

Parameters

left
right
bottom
top
near
far

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::frustumLH	(	T	left,
		T	right,
		T	bottom,
		T	top,
		T	near,
		T	far
	)

Creates a left handed frustum matrix.

Parameters

left
right
bottom
top
near
far

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::frustumRH	(	T	left,
		T	right,
		T	bottom,
		T	top,
		T	near,
		T	far
	)

Creates a right handed frustum matrix.

Parameters

left
right
bottom
top
near
far

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::infinitePerspective	(	T	fovy,
		T	aspect,
		T	near
	)

Creates a matrix for a symmetric perspective-view frustum with far plane at infinite with default handedness.

Parameters

fovy	Specifies the field of view angle, in degrees, in the y direction. Expressed in radians.
aspect	Specifies the aspect ratio that determines the field of view in the x direction. The aspect ratio is the ratio of x (width) to y (height).
near	Specifies the distance from the viewer to the near clipping plane (always positive).

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::infinitePerspectiveLH	(	T	fovy,
		T	aspect,
		T	near
	)

Creates a matrix for a left handed, symmetric perspective-view frustum with far plane at infinite.

Parameters

fovy	Specifies the field of view angle, in degrees, in the y direction. Expressed in radians.
aspect	Specifies the aspect ratio that determines the field of view in the x direction. The aspect ratio is the ratio of x (width) to y (height).
near	Specifies the distance from the viewer to the near clipping plane (always positive).

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::infinitePerspectiveRH	(	T	fovy,
		T	aspect,
		T	near
	)

Creates a matrix for a right handed, symmetric perspective-view frustum with far plane at infinite.

Parameters

fovy	Specifies the field of view angle, in degrees, in the y direction. Expressed in radians.
aspect	Specifies the aspect ratio that determines the field of view in the x direction. The aspect ratio is the ratio of x (width) to y (height).
near	Specifies the distance from the viewer to the near clipping plane (always positive).

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, P> glm::lookAt	(	tvec3< T, P > const &	eye,
		tvec3< T, P > const &	center,
		tvec3< T, P > const &	up
	)

Build a look at view matrix based on the default handedness.

Parameters

eye	Position of the camera
center	Position where the camera is looking at
up	Normalized up vector, how the camera is oriented. Typically (0, 0, 1)

See also: GLM_GTC_matrix_transform; - frustum(T const & left, T const & right, T const & bottom, T const & top, T const & nearVal, T const & farVal) frustum(T const & left, T const & right, T const & bottom, T const & top, T const & nearVal, T const & farVal)

GLM_FUNC_DECL tmat4x4<T, P> glm::lookAtLH	(	tvec3< T, P > const &	eye,
		tvec3< T, P > const &	center,
		tvec3< T, P > const &	up
	)

Build a left handed look at view matrix.

Parameters

eye	Position of the camera
center	Position where the camera is looking at
up	Normalized up vector, how the camera is oriented. Typically (0, 0, 1)

See also: GLM_GTC_matrix_transform; - frustum(T const & left, T const & right, T const & bottom, T const & top, T const & nearVal, T const & farVal) frustum(T const & left, T const & right, T const & bottom, T const & top, T const & nearVal, T const & farVal)

GLM_FUNC_DECL tmat4x4<T, P> glm::lookAtRH	(	tvec3< T, P > const &	eye,
		tvec3< T, P > const &	center,
		tvec3< T, P > const &	up
	)

Build a right handed look at view matrix.

Parameters

eye	Position of the camera
center	Position where the camera is looking at
up	Normalized up vector, how the camera is oriented. Typically (0, 0, 1)

See also: GLM_GTC_matrix_transform; - frustum(T const & left, T const & right, T const & bottom, T const & top, T const & nearVal, T const & farVal) frustum(T const & left, T const & right, T const & bottom, T const & top, T const & nearVal, T const & farVal)

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::ortho	(	T	left,
		T	right,
		T	bottom,
		T	top,
		T	zNear,
		T	zFar
	)

Creates a matrix for an orthographic parallel viewing volume, using the default handedness.

Parameters

left
right
bottom
top
zNear
zFar

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform; - glm::ortho(T const & left, T const & right, T const & bottom, T const & top)

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::ortho	(	T	left,
		T	right,
		T	bottom,
		T	top
	)

Creates a matrix for projecting two-dimensional coordinates onto the screen.

Parameters

left
right
bottom
top

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform; - glm::ortho(T const & left, T const & right, T const & bottom, T const & top, T const & zNear, T const & zFar)

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::orthoLH	(	T	left,
		T	right,
		T	bottom,
		T	top,
		T	zNear,
		T	zFar
	)

Creates a matrix for an orthographic parallel viewing volume, using left-handedness.

Parameters

left
right
bottom
top
zNear
zFar

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform; - glm::ortho(T const & left, T const & right, T const & bottom, T const & top)

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::orthoRH	(	T	left,
		T	right,
		T	bottom,
		T	top,
		T	zNear,
		T	zFar
	)

Creates a matrix for an orthographic parallel viewing volume, using right-handedness.

Parameters

left
right
bottom
top
zNear
zFar

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform; - glm::ortho(T const & left, T const & right, T const & bottom, T const & top)

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::perspective	(	T	fovy,
		T	aspect,
		T	near,
		T	far
	)

Creates a matrix for a symetric perspective-view frustum based on the default handedness.

Parameters

fovy	Specifies the field of view angle in the y direction. Expressed in radians.
aspect	Specifies the aspect ratio that determines the field of view in the x direction. The aspect ratio is the ratio of x (width) to y (height).
near	Specifies the distance from the viewer to the near clipping plane (always positive).
far	Specifies the distance from the viewer to the far clipping plane (always positive).

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::perspectiveFov	(	T	fov,
		T	width,
		T	height,
		T	near,
		T	far
	)

Builds a perspective projection matrix based on a field of view and the default handedness.

Parameters

fov	Expressed in radians.
width
height
near	Specifies the distance from the viewer to the near clipping plane (always positive).
far	Specifies the distance from the viewer to the far clipping plane (always positive).

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::perspectiveFovLH	(	T	fov,
		T	width,
		T	height,
		T	near,
		T	far
	)

Builds a left handed perspective projection matrix based on a field of view.

Parameters

fov	Expressed in radians.
width
height
near	Specifies the distance from the viewer to the near clipping plane (always positive).
far	Specifies the distance from the viewer to the far clipping plane (always positive).

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::perspectiveFovRH	(	T	fov,
		T	width,
		T	height,
		T	near,
		T	far
	)

Builds a right handed perspective projection matrix based on a field of view.

Parameters

fov	Expressed in radians.
width
height
near	Specifies the distance from the viewer to the near clipping plane (always positive).
far	Specifies the distance from the viewer to the far clipping plane (always positive).

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::perspectiveLH	(	T	fovy,
		T	aspect,
		T	near,
		T	far
	)

Creates a matrix for a left handed, symetric perspective-view frustum.

Parameters

fovy	Specifies the field of view angle, in degrees, in the y direction. Expressed in radians.
aspect	Specifies the aspect ratio that determines the field of view in the x direction. The aspect ratio is the ratio of x (width) to y (height).
near	Specifies the distance from the viewer to the near clipping plane (always positive).
far	Specifies the distance from the viewer to the far clipping plane (always positive).

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::perspectiveRH	(	T	fovy,
		T	aspect,
		T	near,
		T	far
	)

Creates a matrix for a right handed, symetric perspective-view frustum.

Parameters

fovy	Specifies the field of view angle, in degrees, in the y direction. Expressed in radians.
aspect	Specifies the aspect ratio that determines the field of view in the x direction. The aspect ratio is the ratio of x (width) to y (height).
near	Specifies the distance from the viewer to the near clipping plane (always positive).
far	Specifies the distance from the viewer to the far clipping plane (always positive).

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, P> glm::pickMatrix	(	tvec2< T, P > const &	center,
		tvec2< T, P > const &	delta,
		tvec4< U, P > const &	viewport
	)

Define a picking region.

Parameters

center
delta
viewport

Template Parameters

T	Native type used for the computation. Currently supported: half (not recommanded), float or double.
U	Currently supported: Floating-point types and integer types.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tvec3<T, P> glm::project	(	tvec3< T, P > const &	obj,
		tmat4x4< T, P > const &	model,
		tmat4x4< T, P > const &	proj,
		tvec4< U, P > const &	viewport
	)

Map the specified object coordinates (obj.x, obj.y, obj.z) into window coordinates.

Parameters

obj	Specify the object coordinates.
model	Specifies the current modelview matrix
proj	Specifies the current projection matrix
viewport	Specifies the current viewport

Returns: Return the computed window coordinates.

Template Parameters

T	Native type used for the computation. Currently supported: half (not recommanded), float or double.
U	Currently supported: Floating-point types and integer types.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, P> glm::rotate	(	tmat4x4< T, P > const &	m,
		T	angle,
		tvec3< T, P > const &	axis
	)

Builds a rotation 4 * 4 matrix created from an axis vector and an angle.

Parameters

m	Input matrix multiplied by this rotation matrix.
angle	Rotation angle expressed in radians.
axis	Rotation axis, recommended to be normalized.

Template Parameters

T	Value type used to build the matrix. Supported: half, float or double.

See also: GLM_GTC_matrix_transform; - rotate(tmat4x4<T, P> const & m, T angle, T x, T y, T z); - rotate(T angle, tvec3<T, P> const & v)

GLM_FUNC_DECL tmat4x4<T, P> glm::scale	(	tmat4x4< T, P > const &	m,
		tvec3< T, P > const &	v
	)

Builds a scale 4 * 4 matrix created from 3 scalars.

Parameters

m	Input matrix multiplied by this scale matrix.
v	Ratio of scaling for each axis.

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform; - scale(tmat4x4<T, P> const & m, T x, T y, T z); - scale(tvec3<T, P> const & v)

GLM_FUNC_DECL tmat4x4<T, P> glm::translate	(	tmat4x4< T, P > const &	m,
		tvec3< T, P > const &	v
	)

Builds a translation 4 * 4 matrix created from a vector of 3 components.

Parameters

m	Input matrix multiplied by this translation matrix.
v	Coordinates of a translation vector.

Template Parameters

T

Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
...
glm::mat4 m = glm::translate(glm::mat4(1.0f), glm::vec3(1.0f));
// m[0][0] == 1.0f, m[0][1] == 0.0f, m[0][2] == 0.0f, m[0][3] == 0.0f
// m[1][0] == 0.0f, m[1][1] == 1.0f, m[1][2] == 0.0f, m[1][3] == 0.0f
// m[2][0] == 0.0f, m[2][1] == 0.0f, m[2][2] == 1.0f, m[2][3] == 0.0f
// m[3][0] == 1.0f, m[3][1] == 1.0f, m[3][2] == 1.0f, m[3][3] == 1.0f

See also: GLM_GTC_matrix_transform; - translate(tmat4x4<T, P> const & m, T x, T y, T z); - translate(tvec3<T, P> const & v)

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::tweakedInfinitePerspective	(	T	fovy,
		T	aspect,
		T	near
	)

Creates a matrix for a symmetric perspective-view frustum with far plane at infinite for graphics hardware that doesn't support depth clamping.

Parameters

fovy	Specifies the field of view angle, in degrees, in the y direction. Expressed in radians.
aspect	Specifies the aspect ratio that determines the field of view in the x direction. The aspect ratio is the ratio of x (width) to y (height).
near	Specifies the distance from the viewer to the near clipping plane (always positive).

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tmat4x4<T, defaultp> glm::tweakedInfinitePerspective	(	T	fovy,
		T	aspect,
		T	near,
		T	ep
	)

Creates a matrix for a symmetric perspective-view frustum with far plane at infinite for graphics hardware that doesn't support depth clamping.

Parameters

fovy	Specifies the field of view angle, in degrees, in the y direction. Expressed in radians.
aspect	Specifies the aspect ratio that determines the field of view in the x direction. The aspect ratio is the ratio of x (width) to y (height).
near	Specifies the distance from the viewer to the near clipping plane (always positive).
ep

Template Parameters

T	Value type used to build the matrix. Currently supported: half (not recommanded), float or double.

See also: GLM_GTC_matrix_transform

GLM_FUNC_DECL tvec3<T, P> glm::unProject	(	tvec3< T, P > const &	win,
		tmat4x4< T, P > const &	model,
		tmat4x4< T, P > const &	proj,
		tvec4< U, P > const &	viewport
	)

Map the specified window coordinates (win.x, win.y, win.z) into object coordinates.

Parameters

win	Specify the window coordinates to be mapped.
model	Specifies the modelview matrix
proj	Specifies the projection matrix
viewport	Specifies the viewport

Returns: Returns the computed object coordinates.

Template Parameters

T	Native type used for the computation. Currently supported: half (not recommanded), float or double.
U	Currently supported: Floating-point types and integer types.

See also: GLM_GTC_matrix_transform

Functions

Detailed Description

Function Documentation