javax.media.j3d

Class PointAttributes

java.lang.Object

javax.media.j3d.SceneGraphObject

javax.media.j3d.NodeComponent

javax.media.j3d.PointAttributes

public class PointAttributes
extends NodeComponent

The PointAttributes object defines all attributes that apply to point primitives. The point attributes that can be defined are:

• Size - the size of the point, in pixels. The default is a point size of one pixel.
• Antialiasing - for points greater than one-pixel in size, antialiasing smooths the outline of the point when it is rendered.

If antialiasing is disabled (the default), fractional point sizes are rounded to integer sizes, and a screen-aligned square region of pixels is drawn.

If antialiasing is enabled, the points are considered transparent for rendering purposes. They are rendered with all the other transparent objects and adhere to the other transparency settings such as the View transparency sorting policy and the View depth buffer freeze transparent enable.

See Also:

Appearance, View

Field Summary

Fields

Modifier and Type	Field and Description
static int	ALLOW_ANTIALIASING_READ Specifies that this PointAttributes object allows reading its point antialiasing flag.
static int	ALLOW_ANTIALIASING_WRITE Specifies that this PointAttributes object allows writing its point antialiasing flag.
static int	ALLOW_SIZE_READ Specifies that this PointAttributes object allows reading its point size information.
static int	ALLOW_SIZE_WRITE Specifies that this PointAttributes object allows writing its point size information.

Constructor Summary

Constructors

Constructor and Description
PointAttributes() Constructs a PointAttributes object with default parameters.
PointAttributes(float pointSize, boolean pointAntialiasing) Constructs a PointAttributes object with specified values.

Method Summary

Methods

Modifier and Type	Method and Description
NodeComponent	cloneNodeComponent() Deprecated. replaced with cloneNodeComponent(boolean forceDuplicate)
boolean	getPointAntialiasingEnable() Retrieves the state of the point antialiasing flag.
float	getPointSize() Gets the point size for this appearance component object.
void	setPointAntialiasingEnable(boolean state) Enables or disables point antialiasing for this appearance component object.
void	setPointSize(float pointSize) Sets the point size for this appearance component object.

Methods inherited from class javax.media.j3d.NodeComponent

cloneNodeComponent, duplicateNodeComponent, duplicateNodeComponent, getDuplicateOnCloneTree, setDuplicateOnCloneTree

Methods inherited from class javax.media.j3d.SceneGraphObject

clearCapability, clearCapabilityIsFrequent, duplicateSceneGraphObject, getCapability, getCapabilityIsFrequent, getName, getUserData, isCompiled, isLive, setCapability, setCapabilityIsFrequent, setName, setUserData, toString, updateNodeReferences

Methods inherited from class java.lang.Object

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

Field Detail

ALLOW_SIZE_READ

public static final int ALLOW_SIZE_READ

Specifies that this PointAttributes object allows reading its point size information.

See Also:

Constant Field Values

ALLOW_SIZE_WRITE

public static final int ALLOW_SIZE_WRITE

Specifies that this PointAttributes object allows writing its point size information.

See Also:

Constant Field Values

ALLOW_ANTIALIASING_READ

public static final int ALLOW_ANTIALIASING_READ

Specifies that this PointAttributes object allows reading its point antialiasing flag.

See Also:

Constant Field Values

ALLOW_ANTIALIASING_WRITE

public static final int ALLOW_ANTIALIASING_WRITE

Specifies that this PointAttributes object allows writing its point antialiasing flag.

See Also:

Constant Field Values

Constructor Detail

PointAttributes

public PointAttributes()

Constructs a PointAttributes object with default parameters. The default values are as follows:

point size : 1
point antialiasing : false

PointAttributes

public PointAttributes(float pointSize,
               boolean pointAntialiasing)

Constructs a PointAttributes object with specified values.

Parameters:

pointSize - the size of points, in pixels

pointAntialiasing - flag to set point antialising ON or OFF

Method Detail

setPointSize

public void setPointSize(float pointSize)

Sets the point size for this appearance component object.

Parameters:

pointSize - the size, in pixels, of point primitives

Throws:

CapabilityNotSetException - if appropriate capability is not set and this object is part of live or compiled scene graph

getPointSize

public float getPointSize()

Gets the point size for this appearance component object.

Returns:

the size, in pixels, of point primitives

Throws:

CapabilityNotSetException - if appropriate capability is not set and this object is part of live or compiled scene graph

setPointAntialiasingEnable

public void setPointAntialiasingEnable(boolean state)

Enables or disables point antialiasing for this appearance component object.

If antialiasing is enabled, the points are considered transparent for rendering purposes. They are rendered with all the other transparent objects and adhere to the other transparency settings such as the View transparency sorting policy and the View depth buffer freeze transparent enable.

Parameters:

state - true or false to enable or disable point antialiasing

Throws:

CapabilityNotSetException - if appropriate capability is not set and this object is part of live or compiled scene graph

See Also:

View

getPointAntialiasingEnable

public boolean getPointAntialiasingEnable()

Retrieves the state of the point antialiasing flag.

Returns:

true if point antialiasing is enabled, false if point antialiasing is disabled

Throws:

CapabilityNotSetException - if appropriate capability is not set and this object is part of live or compiled scene graph

cloneNodeComponent

public NodeComponent cloneNodeComponent()

Deprecated. replaced with cloneNodeComponent(boolean forceDuplicate)

Overrides:

cloneNodeComponent in class NodeComponent