This class provides camera functionality. More...

#include <camera.h>

Inherits Entity.

Public Member Functions
	Camera ()
	Creates a new camera. More...

void	activatePerspective (float aspect=1.0f, float fovy=90.0f, float zNear=0.1f, float zFar=100.0f)
	Switches the camera into perspective mode. More...

void	activateOrthographic (float aspect=1.0f, float yWidth=2.0f, float zNear=0.1f, float zFar=100.0f)
	Switches the camera into orthographic mode. NOT SUPPORTED! More...

void	setPos (QVector3D &pos) override
	Changes the entity's location. More...

void	setPos (float x, float y, float z) override
	Changes the entity's location. More...

void	setTarget (QVector3D &target)
	Changes the view target location. More...

QMatrix4x4 &	getVpMat ()
	Returns a link to the view projection matrix. More...

QMatrix4x4 &	getVMat ()
	Returns a link to the view matrix. More...

QMatrix4x4 &	getInvProjMat ()
	Returns a link to the inverse projection matrix. More...

void	rotate (float deg_x, float deg_y)
	Rotates the camera. More...

void	move (float up, float right)
	Moves the camera. More...

float &	getPointSizeCoeff ()
	Returns a pointer to the pointSizeCoeff. More...

QVector3D	getViewDependentMoveVector (float up, float right)
	Transforms a vector from view space to world space. More...

QVector3D	getViewTarget ()
	Returns the location of the camera's view target. More...

Public Member Functions inherited from Entity
	Entity (float x, float y, float z)
	Creates a new entity at the given location. More...

	Entity ()
	Creates a new entity at the origin (0,0,0).

float	distance (Entity &to)
	Computes the euclidean distance to another entity. More...

float	distance (float x, float y, float z)
	Computes the euclidean distance to a location. More...

QVector3D	getPos ()
	Returns the location of the entity. More...

Additional Inherited Members
Public Attributes inherited from Entity
float	x
	The x coordinate of the entity's location.

float	y
	The y coordinate of the entity's location.

float	z
	The z coordinate of the entity's location.

Detailed Description

This class provides camera functionality.

The rotation is free in yaw and pitch. The roll is fixed.

Constructor & Destructor Documentation

Camera::Camera ( )

Creates a new camera.

The camera is located at (1,0,0) with perspective activated. It points toward the origin.

Member Function Documentation

void Camera::activateOrthographic	(	float	aspect = `1.0f`,
		float	yWidth = `2.0f`,
		float	zNear = `0.1f`,
		float	zFar = `100.0f`
	)

Switches the camera into orthographic mode. NOT SUPPORTED!

Parameters

aspect	The aspect ratio of the image plane (x/y)
yWidth	The height of the image plane.
zNear	The z value of the near plane.
zFar	The z value of the far plane.

void Camera::activatePerspective	(	float	aspect = `1.0f`,
		float	fovy = `90.0f`,
		float	zNear = `0.1f`,
		float	zFar = `100.0f`
	)

Switches the camera into perspective mode.

Parameters

aspect	The aspect ratio of the image plane (x/y)
fovy	The vertical field of view - e.g. 90 results in 45° up and 45° down.
zNear	The z value of the near plane.
zFar	The z value of the far plane.

QMatrix4x4 & Camera::getInvProjMat ( )

Returns a link to the inverse projection matrix.

The matrix link will stay valid while the camera exists and is kept up-to-date.

Returns: The inverse projection matrix.

float & Camera::getPointSizeCoeff ( )

Returns a pointer to the pointSizeCoeff.

This value is needed for the visibility and the attribute pass to compute the Splat-BoundingBoxes. This link will stay valid while the camera exists and is kept up-to-date.

Returns: The pointSizeCoeff.

QVector3D Camera::getViewDependentMoveVector	(	float	up,
		float	right
	)

Transforms a vector from view space to world space.

Camera::getViewDependentMoveVector.

The x and y coordinates can be defined, the z coordinate is assumed 0.

Parameters

up	The y coordinate in view space.
right	The x coordinate in view space.

Returns: The vector in world space.

Parameters

up	- 2D move from mouse, up/down
right	- 2D move from mouse, right/left

Returns: 3D vector to move object depending on current view

QVector3D Camera::getViewTarget ( )

Returns the location of the camera's view target.

Returns: The target location.

QMatrix4x4 & Camera::getVMat ( )

Returns a link to the view matrix.

The matrix link will stay valid while the camera exists and is kept up-to-date.

Returns: The v-Matrix.

QMatrix4x4 & Camera::getVpMat ( )

Returns a link to the view projection matrix.

The matrix link will stay valid while the camera exists and is kept up-to-date.

Returns: The vp-Matrix.

void Camera::move	(	float	up,
		float	right
	)

Moves the camera.

The camera will be moved together with its view target resulting in no rotation.

Parameters

up	The amount of movement along the y camera-axis given in an abstract unit.
right	The amount of movement along the x camera-axis given in an abstract unit.

void Camera::rotate	(	float	deg_x,
		float	deg_y
	)

Rotates the camera.

The camera will be rotated around the view target location while staying focused onto the target.

Parameters

deg_x	The angle of rotation around the y world-axis direction.
deg_y	The angle of rotation around the x camera-axis direction.

void Camera::setPos ( QVector3D & pos )

overridevirtual

Changes the entity's location.

Parameters

pos	The new position.

Reimplemented from Entity.

void Camera::setPos	(	float	x,
		float	y,
		float	z
	)

overridevirtual

Changes the entity's location.

Parameters

x	The new x coordinate.
y	The new y coordinate.
z	The new z coordinate.

Reimplemented from Entity.

void Camera::setTarget ( QVector3D & target )

Changes the view target location.

The rotation of the camera will be adjusted so that the target will project to the center of the image plane.

Parameters

target The target location.

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

camera.h
camera.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation