Module imp3d

Package de.grogra.imp3d

Class CameraBase

java.lang.Object

de.grogra.imp3d.CameraBase

Direct Known Subclasses:

Camera, CanvasCamera

public abstract class CameraBase
extends Object

Constructor Summary

Constructors

Constructor	Description
CameraBase()

Method Summary

Modifier and Type	Method	Description
abstract void	getRay(float x, float y, Point3d origin, Vector3d direction)	Determines the ray which starts at the camera and goes through the specified point on the image plane of the camera.
abstract float	getScaleAt(double x, double y, double z)	Computes an estimate for the scaling factor from 3D world coordinates at (x, y, z) to 2D coordinates on the camera plane.
abstract float	getScaleAt(float z)	Computes an estimate for the scaling factor from view coordinates around a depth of z to 2D coordinates on the camera plane.
abstract Matrix4d	getWorldToViewTransformation()	Returns the world-to-view transformation of this camera.
abstract float	getZFar()
abstract float	getZNear()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

CameraBase

public CameraBase()

Method Details

getScaleAt

public abstract float getScaleAt(double x,
 double y,
 double z)

Computes an estimate for the scaling factor from 3D world coordinates at (x, y, z) to 2D coordinates on the camera plane.

Parameters:

x - x world coordinate

y - y world coordinate

z - z world coordinate

Returns:

scaling factor of camera projection at location

getScaleAt

public abstract float getScaleAt(float z)

Computes an estimate for the scaling factor from view coordinates around a depth of z to 2D coordinates on the camera plane.

Parameters:

z - z view coordinate

Returns:

scaling factor of camera projection at location

getRay

public abstract void getRay(float x,
 float y,
 Point3d origin,
 Vector3d direction)

Determines the ray which starts at the camera and goes through the specified point on the image plane of the camera.

Parameters:

x - the x-coordinate on the image plane

y - the y-coordinate on the image plane

origin - the origin of the ray, in world coordinates

direction - the direction of the ray, in world coordinates

getZNear

public abstract float getZNear()

getZFar

public abstract float getZFar()

getWorldToViewTransformation

public abstract Matrix4d getWorldToViewTransformation()

Returns the world-to-view transformation of this camera. It transforms world coordinates to view coordinates (= camera coordinates).

Returns:

world-to-view transformation