java.lang.Object
- elki.visualization.parallel3d.util.Simple1DOFCamera

```
public class Simple1DOFCamera
extends java.lang.Object
```
Class for a simple camera. Restricted: always looks at 0,0,0 from a position defined by rotationX, distance and height.
For rotationX = 0, the camera will be at y=distance, x=0, so that the default view will have the usual X/Y plane on the ground.

Since:

0.6.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static interface Simple1DOFCamera.CameraListener
Camera Listener class

Field Summary

Fields
Modifier and Type	Field	Description
`private double`	`cosZ`	Cache the Z rotation cosine
`private double`	`distance`	Distance
`private javax.media.opengl.glu.GLU`	`glu`	GLU utility
`private double`	`height`	Height
`(package private) java.util.ArrayList<Simple1DOFCamera.CameraListener>`	`listeners`	Camera listener list.
`private double[]`	`modelview`	GLU model view matrix
`private double[]`	`projection`	GLU projection matrix
`private double`	`ratio`	Screen ratio
`private double`	`rotationZ`	Rotation on X axis.
`private double`	`sinZ`	Cache the Z rotation sine
`private int[]`	`viewp`	GLU viewport storage

Constructor Summary

Constructors
Constructor	Description
`Simple1DOFCamera(Simple1DOFCamera other)`	Copy constructor, for freezing a camera position.
`Simple1DOFCamera(javax.media.opengl.glu.GLU glu)`	Constructor.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`addCameraListener(Simple1DOFCamera.CameraListener lis)`	Add a camera listener.
`void`	`apply(javax.media.opengl.GL2 gl)`	Apply the camera to a GL context.
`protected void`	`fireCameraChangedEvent()`	Fire the camera changed event.
`double`	`getDistance()`	Get the distance
`double`	`getHeight()`	Get camera height
`double`	`getRatio()`	Get screen ratio.
`double`	`getRotationZ()`	Get the Z rotation in radians.
`void`	`project(double x, double y, double z, double[] out)`	Project a coordinate
`void`	`removeCameraListener(Simple1DOFCamera.CameraListener lis)`	Remove a camera listener.
`void`	`setDistance(double distance)`	Set camera distance
`void`	`setHeight(double height)`	Set camera height
`void`	`setRatio(double ratio)`	Set screen ratio.
`void`	`setRotationZ(double rotationZ)`	Set the z rotation angle in radians.
`double`	`squaredDistanceFromCamera(double x, double y)`	Distance from camera
`double`	`squaredDistanceFromCamera(double x, double y, double z)`	Distance from camera
`double[]`	`unproject(double x, double y, double z)`	Unproject a screen coordinate (at depth 0) to 3D model coordinates.
`void`	`unproject(double x, double y, double z, double[] out)`	Unproject a screen coordinate (at depth 0) to 3D model coordinates.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - rotationZ
```
private double rotationZ
```
    Rotation on X axis.
  - distance
```
private double distance
```
    Distance
  - height
```
private double height
```
    Height
  - ratio
```
private double ratio
```
    Screen ratio
  - viewp
```
private int[] viewp
```
    GLU viewport storage
  - modelview
```
private double[] modelview
```
    GLU model view matrix
  - projection
```
private double[] projection
```
    GLU projection matrix
  - glu
```
private javax.media.opengl.glu.GLU glu
```
    GLU utility
  - cosZ
```
private double cosZ
```
    Cache the Z rotation cosine
  - sinZ
```
private double sinZ
```
    Cache the Z rotation sine
  - listeners
```
java.util.ArrayList<Simple1DOFCamera.CameraListener> listeners
```
    Camera listener list.
- Constructor Detail
  - Simple1DOFCamera
```
public Simple1DOFCamera(javax.media.opengl.glu.GLU glu)
```
    Constructor.
    
    Parameters:
    
    glu - GLU utility class
  - Simple1DOFCamera
```
public Simple1DOFCamera(Simple1DOFCamera other)
```
    Copy constructor, for freezing a camera position. Note: listeners will not be copied.
    
    Parameters:
    
    other - Existing camera
- Method Detail
  - getDistance
```
public double getDistance()
```
    Get the distance
    
    Returns:
    
    Distance
  - setDistance
```
public void setDistance(double distance)
```
    Set camera distance
    
    Parameters:
    
    distance - Distance
  - getHeight
```
public double getHeight()
```
    Get camera height
    
    Returns:
    
    Camera height
  - setHeight
```
public void setHeight(double height)
```
    Set camera height
    
    Parameters:
    
    height - Camera height
  - getRatio
```
public double getRatio()
```
    Get screen ratio.
    
    Returns:
    
    Screen ratio
  - setRatio
```
public void setRatio(double ratio)
```
    Set screen ratio.
    
    Parameters:
    
    ratio - Screen ratio
  - getRotationZ
```
public double getRotationZ()
```
    Get the Z rotation in radians.
    
    Returns:
    
    Z rotation angle (radians)
  - setRotationZ
```
public void setRotationZ(double rotationZ)
```
    Set the z rotation angle in radians.
    
    Parameters:
    
    rotationZ - Z rotation angle.
  - apply
```
public void apply(javax.media.opengl.GL2 gl)
```
    Apply the camera to a GL context.
    
    Parameters:
    
    gl - GL context.
  - unproject
```
public double[] unproject(double x,
                          double y,
                          double z)
```
    Unproject a screen coordinate (at depth 0) to 3D model coordinates.
    
    Parameters:
    
    x - X
    
    y - Y
    
    z - Z
    
    Returns:
    
    model coordinates
  - unproject
```
public void unproject(double x,
                      double y,
                      double z,
                      double[] out)
```
    Unproject a screen coordinate (at depth 0) to 3D model coordinates.
    
    Parameters:
    
    x - X
    
    y - Y
    
    z - Z
    
    out - output buffer
  - project
```
public void project(double x,
                    double y,
                    double z,
                    double[] out)
```
    Project a coordinate
    
    Parameters:
    
    x - X
    
    y - Y
    
    z - Z
    
    out - output buffer
  - squaredDistanceFromCamera
```
public double squaredDistanceFromCamera(double x,
                                        double y)
```
    Distance from camera
    
    Parameters:
    
    x - X position
    
    y - Y position
    
    Returns:
    
    Squared distance
  - squaredDistanceFromCamera
```
public double squaredDistanceFromCamera(double x,
                                        double y,
                                        double z)
```
    Distance from camera
    
    Parameters:
    
    x - X position
    
    y - Y position
    
    z - Z position
    
    Returns:
    
    Squared distance
  - addCameraListener
```
public void addCameraListener(Simple1DOFCamera.CameraListener lis)
```
    Add a camera listener.
    
    Parameters:
    
    lis - Listener
  - removeCameraListener
```
public void removeCameraListener(Simple1DOFCamera.CameraListener lis)
```
    Remove a camera listener.
    
    Parameters:
    
    lis - Listener
  - fireCameraChangedEvent
```
protected void fireCameraChangedEvent()
```
    Fire the camera changed event.

Class Simple1DOFCamera

Nested Class Summary

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

rotationZ

distance

height

ratio

viewp

modelview

projection

glu

cosZ

sinZ

listeners

Constructor Detail

Simple1DOFCamera

Simple1DOFCamera

Method Detail

getDistance

setDistance

getHeight

setHeight

getRatio

setRatio

getRotationZ

setRotationZ

apply

unproject

unproject

project

squaredDistanceFromCamera

squaredDistanceFromCamera

addCameraListener

removeCameraListener

fireCameraChangedEvent