de.grogra.imp3d

Class CameraBase

java.lang.Object

de.grogra.imp3d.CameraBase

Direct Known Subclasses:

Camera, CanvasCamera

public abstract class CameraBase
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
CameraBase()

Method Summary

Methods

Modifier and Type	Method and 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 Detail

CameraBase

public CameraBase()

Method Detail

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

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

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

getZFar

public abstract float getZFar()

getZNear

public abstract float getZNear()