t::OrthographicCamera Class Reference

The orthographic projection camera. More...

#include <OrthographicCamera.hpp>

Inheritance diagram for t::OrthographicCamera:

Public Member Functions
	OrthographicCamera (double _left, double _right, double _top, double _bottom, double _near, double _far)
	Creates a new orthographic camera with the specified planes as the view frustum.
Public Member Functions inherited from t::Camera
	Camera (const Matrix4x4 &projectionMatrix)
	Creates a new camera instance with the specified projection matrix.
Public Member Functions inherited from t::Object3D
virtual bool	isMesh () const
	Returns whether this 3D object is a mesh.
virtual bool	isLight () const
	Returns whether this 3D object is a light.
Object3D &	add (Object3D &child)
	Adds another 3D object as a child of this 3D object.
Object3D &	translate (double x, double y, double z)
	Translates this 3D object by the specified amounts along the x, y, and z axes in local space.
Object3D &	rotate (double x, double y, double z, EulerRotationOrder order)
	Rotates this 3D object by the specified angles around the x, y, and z axes in local space.
Object3D &	scale (double x, double y, double z)
	Scales this 3D object by the specified amounts along the x, y, and z axes in local space.
Object3D &	updateLocalMatrix ()
	Updates the local transformation matrix of this 3D object.
Object3D &	updateModelMatrix ()
	Updates the model matrix of this 3D object.

Public Attributes
double	left
	The left plane of this camera's view frustum.
double	right
	The right plane of this camera's view frustum.
double	top
	The top plane of this camera's view frustum.
double	bottom
	The bottom plane of this camera's view frustum.
double	near
	The near plane of this camera's view frustum.
double	far
	The far plane of this camera's view frustum.
Public Attributes inherited from t::Camera
Matrix4x4	projectionMatrix
	The projection matrix of this camera.
Public Attributes inherited from t::Object3D
std::optional< std::reference_wrapper< Object3D > >	parent
	The parent of this 3D object.
Vector3	up = DEFAULT_UP
	The vector pointing to the up direction in object space.
Vector3	localPosition
	The position of this 3D object relative to its parent.
EulerRotation	localRotation
	The rotation of this 3D object relative to its parent.
Vector3	localScale
	The scale of this 3D object relative to its parent.
Matrix4x4	localMatrix
	The matrix of the local transformation of this 3D object.
Matrix4x4	modelMatrix
	The model matrix of this 3D object, transformating local space to world space.
std::vector< std::reference_wrapper< Object3D > >	children
	The children of this 3D object.

Detailed Description

The orthographic projection camera.

A typical orthographic camera instantiation might look like the following:

const auto camera = OrthographicCamera(width / -2, width / 2, height / 2, height
    / -2, 0.1, 2000 );

…where width and height are the output image's width and height.

The orthographic camera will use the following projection matrix:

\[ \begin{bmatrix} \frac{2}{r - l} & 0 & 0 & -\frac{r + l}{r - l} \\ 0 & \frac{2}{t - b} & 0 & -\frac{t + b}{t - b} \\ 0 & 0 & -\frac{2}{f - n} & -\frac{f + n}{f - n} \\ 0 & 0 & 0 & 1 \end{bmatrix} \]

…where \(r\), \(l\), \(t\), \(b\), \(f\), \(n\) are the right, left, top, bottom, far, and near planes of the camera's view frustum, respectively.

Constructor & Destructor Documentation

OrthographicCamera()

t::OrthographicCamera::OrthographicCamera ( double _left, double _right, double _top, double _bottom, double _near, double _far )

inline

Creates a new orthographic camera with the specified planes as the view frustum.

The view frustum of the orthographic camera is in the shape of a box. Only objects in this box may appear in the render.

The planes should be set such that _right > _left and _top > _bottom.

Parameters

_left	The left plane of the new camera's view frustum.
_right	The right plane of the new camera's view frustum.
_top	The top plane of the new camera's view frustum.
_bottom	The bottom plane of the new camera's view frustum.
_near	The near plane of the new camera's view frustum.
_far	The far plane of the new camera's view frustum.

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

• include/cameras/OrthographicCamera.hpp