org.opensourcephysics.display3d.simple3d

Class Camera

java.lang.Object

org.opensourcephysics.display3d.simple3d.Camera

All Implemented Interfaces:

Camera

public class Camera
extends java.lang.Object
implements Camera

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected static class	Camera.CameraLoader

Nested classes/interfaces inherited from interface org.opensourcephysics.display3d.core.Camera

Camera.Loader

Field Summary

Fields inherited from interface org.opensourcephysics.display3d.core.Camera

MODE_NO_PERSPECTIVE, MODE_PERSPECTIVE, MODE_PLANAR_XY, MODE_PLANAR_XZ, MODE_PLANAR_YZ

Method Summary

Methods

Modifier and Type	Method and Description
double	getAltitude() Get the elevation (vertical) angle of the camera position in spherical coordinates with respect to the focus point.
double	getAzimuth() Get the horizontal angle of the camera position in spherical coordinates with respect to the focus point.
double	getDistanceToScreen() Returns the distance from the camera to the projecting screen.
double	getFocusX() Returns the focus X coordinate
double	getFocusY() Returns the focus Y coordinate
double	getFocusZ() Returns the focus Z coordinate
static XML.ObjectLoader	getLoader()
int	getProjectionMode() Gets the projecting mode of the camera.
double	getRotation() Returns the angle that the camera is rotated along the line of sight.
Transformation	getTransformation() Returns the transfomation used to project (x,y,z) points in space to points of the form (a,b,distance).
double	getX() Returns the camera X coordinate
double	getY() Returns the camera Y coordinate
double	getZ() Returns the camera Z coordinate
void	reset() Resets the camera to the default.
void	setAltitude(double angle) Set the elevation (vertical) angle of the camera position in spherical coordinates with respect to the focus point.
void	setAzimuth(double angle) Set the azimuthal (horizontal) angle of the camera position in spherical coordinates with respect to the focus point.
void	setAzimuthAndAltitude(double azimuth, double altitude) Set the angles of the camera position in spherical coordinates with respect to the focus point.
void	setDistanceToScreen(double distance) Sets the distance from the camera to the projecting screen.
void	setFocusXYZ(double[] point) Sets the focus of the camera.
void	setFocusXYZ(double x, double y, double z) Sets the focus point of the camera.
void	setProjectionMode(int mode) Sets one of the projecting modes.
void	setRotation(double angle) Sets the angle that the camera is rotated along the line of sight.
void	setXYZ(double[] point) Sets the position of the camera.
void	setXYZ(double x, double y, double z) Sets the position of the camera.

Methods inherited from class java.lang.Object

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

Method Detail

setProjectionMode

public void setProjectionMode(int mode)

Description copied from interface: Camera

Sets one of the projecting modes. Possible values are:

• MODE_PERSPECTIVE: 3D mode in which objects far away look smaller.
• MODE_NO_PERSPECTIVE: 3D mode in which distance doesn't affect the size of the objects
• MODE_PLANAR_XY: 2D mode in which only the X and Y coordinates are displayed.
• MODE_PLANAR_XZ: 2D mode in which only the X and Z coordinates are displayed.
• MODE_PLANAR_YZ: 2D mode in which only the Y and Z coordinates are displayed.

Changing the mode does not reset the camera.

Specified by:

setProjectionMode in interface Camera

Parameters:

mode - int

getProjectionMode

public final int getProjectionMode()

Description copied from interface: Camera

Gets the projecting mode of the camera.

Specified by:

getProjectionMode in interface Camera

Returns:

int #see #setProjectionMode(int)

reset

public void reset()

Description copied from interface: Camera

Resets the camera to the default. The camera is placed along the X direction, at a reasonable distance from the center of the panel, which becomes the focus, and is not rotated. The screen is also placed at a reasonable distance so that to view the whole scene.

Specified by:

reset in interface Camera

setXYZ

public void setXYZ(double x,
          double y,
          double z)

Description copied from interface: Camera

Sets the position of the camera.

Specified by:

setXYZ in interface Camera

Parameters:

x - double

y - double

z - double

setXYZ

public void setXYZ(double[] point)

Description copied from interface: Camera

Sets the position of the camera.

Specified by:

setXYZ in interface Camera

Parameters:

point - double[]

getX

public final double getX()

Description copied from interface: Camera

Returns the camera X coordinate

Specified by:

getX in interface Camera

Returns:

double the X coordinate of the camera position

getY

public final double getY()

Description copied from interface: Camera

Returns the camera Y coordinate

Specified by:

getY in interface Camera

Returns:

double the Y coordinate of the camera position

getZ

public final double getZ()

Description copied from interface: Camera

Returns the camera Z coordinate

Specified by:

getZ in interface Camera

Returns:

double the Z coordinate of the camera position

setFocusXYZ

public void setFocusXYZ(double x,
               double y,
               double z)

Description copied from interface: Camera

Sets the focus point of the camera. That it, the point in space at which the camera is pointing.

Specified by:

setFocusXYZ in interface Camera

Parameters:

x - double

y - double

z - double

setFocusXYZ

public void setFocusXYZ(double[] point)

Description copied from interface: Camera

Sets the focus of the camera.

Specified by:

setFocusXYZ in interface Camera

Parameters:

point - double[]

getFocusX

public final double getFocusX()

Description copied from interface: Camera

Returns the focus X coordinate

Specified by:

getFocusX in interface Camera

Returns:

double the X coordinate of the focus position

getFocusY

public final double getFocusY()

Description copied from interface: Camera

Returns the focus Y coordinate

Specified by:

getFocusY in interface Camera

Returns:

double the Y coordinate of the focus position

getFocusZ

public final double getFocusZ()

Description copied from interface: Camera

Returns the focus Z coordinate

Specified by:

getFocusZ in interface Camera

Returns:

double the Z coordinate of the focus position

setRotation

public void setRotation(double angle)

Description copied from interface: Camera

Sets the angle that the camera is rotated along the line of sight. Default is 0.

Specified by:

setRotation in interface Camera

Parameters:

angle - double The angle in radians

getRotation

public final double getRotation()

Description copied from interface: Camera

Returns the angle that the camera is rotated along the line of sight.

Specified by:

getRotation in interface Camera

Returns:

double

setDistanceToScreen

public void setDistanceToScreen(double distance)

Description copied from interface: Camera

Sets the distance from the camera to the projecting screen.

Specified by:

setDistanceToScreen in interface Camera

Parameters:

distance - double

getDistanceToScreen

public final double getDistanceToScreen()

Description copied from interface: Camera

Returns the distance from the camera to the projecting screen.

Specified by:

getDistanceToScreen in interface Camera

Returns:

double

setAzimuth

public void setAzimuth(double angle)

Description copied from interface: Camera

Set the azimuthal (horizontal) angle of the camera position in spherical coordinates with respect to the focus point. A value of 0 places the camera in the XZ plane.

Specified by:

setAzimuth in interface Camera

Parameters:

angle - the desired angle in radians

getAzimuth

public final double getAzimuth()

Description copied from interface: Camera

Get the horizontal angle of the camera position in spherical coordinates with respect to the focus point. A value of 0 means the camera is in the XZ plane.

Specified by:

getAzimuth in interface Camera

Returns:

double

setAltitude

public void setAltitude(double angle)

Description copied from interface: Camera

Set the elevation (vertical) angle of the camera position in spherical coordinates with respect to the focus point. A value of 0 places the camera is in the XY plane.

Specified by:

setAltitude in interface Camera

Parameters:

angle - the desired angle in radians in the range [-Math.PI/2,Math.PI/2]

getAltitude

public final double getAltitude()

Description copied from interface: Camera

Get the elevation (vertical) angle of the camera position in spherical coordinates with respect to the focus point. A value of 0 means the camera is in the XY plane.

Specified by:

getAltitude in interface Camera

Returns:

double

setAzimuthAndAltitude

public void setAzimuthAndAltitude(double azimuth,
                         double altitude)

Description copied from interface: Camera

Set the angles of the camera position in spherical coordinates with respect to the focus point.

Specified by:

setAzimuthAndAltitude in interface Camera

Parameters:

azimuth - the desired azimuthal angle in radians

altitude - the desired altitude angle in radians in the range [-Math.PI/2,Math.PI/2]

getTransformation

public final Transformation getTransformation()

Description copied from interface: Camera

Returns the transfomation used to project (x,y,z) points in space to points of the form (a,b,distance). (a,b) are the coordinates of the projected point in the screen coordinate system. distance is a measure of how far the point is from the camera. Typically, points in the plane parallel to the screen at the focus point are at distance=1.

Specified by:

getTransformation in interface Camera

Returns:

double

getLoader

public static XML.ObjectLoader getLoader()