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/*
* Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*
*/
package javax.media.j3d;
import javax.vecmath.Point2f;
import javax.vecmath.Point3f;
/**
* The PointSound node (a sub-class of the Sound node) defines a spatially
* located sound source whose waves radiate uniformly in all directions from
* a given location in space. It has the same attributes as a Sound object
* with the addition of a location and the specification of distance-based
* gain attenuation for listener positions between an array of distances.
*
* A sound's amplitude is attenuated based on the distance between the listener
* and the sound source position. A piecewise linear curve (defined in terms of
* pairs of distance and gain scale factor) specifies the gain scale factor slope.
*
* The PointSound's location and attenuation distances are defined in the local
* coordinate system of the node.
*
* Distance Gain Attenuation
*
* Associated with distances from the listener to the sound source via an
* array of (distance, gain-scale-factor) pairs. The gain scale factor
* applied to the sound source is the linear interpolated gain value between
* the distance value range that includes the current distance from
* the listener to the sound source. If the distance from the listener to
* the sound source is less than the first distance in the array, the first
* gain scale factor is applied to the sound source. This creates a
* spherical region around the listener within which all sound gain is
* uniformly scaled by the first gain in the array. If the distance from
* the listener to the sound source is greater than the last distance in
* the array, the last gain scale factor is applied to the sound source.
*
* Distance elements in this array of Point2f is a monotonically-increasing
* set of floating point numbers measured from the location of the sound
* source. Gain scale factors elements in this list of pairs can be any
* positive floating point numbers. While for most applications this list
* of gain scale factors will usually be monotonically-decreasing, they
* do not have to be.
* If this
* is not set, no distance gain attenuation is performed (equivalent to
* using a distance gain of 1.0 for all distances).
*
* getDistanceGainLength method returns the length of the distance gain
* attenuation arrays. Arrays passed into getDistanceGain methods should all
* be at least this size.
*
* There are two methods for getDistanceGain, one returning an array of
* points, the other returning separate arrays for each attenuation
* component.
*/
public class PointSound extends Sound {
// Constants
//
// These flags, when enabled using the setCapability method, allow an
// application to invoke methods that respectively read and write the position
// and the distance gain array. These capability flags are enforced only when
// the node is part of a live or compiled scene graph
/**
* Specifies that this node allows access to its object's position
* information.
*/
public static final int
ALLOW_POSITION_READ = CapabilityBits.POINT_SOUND_ALLOW_POSITION_READ;
/**
* Specifies that this node allows writing to its object's position
* information.
*/
public static final int
ALLOW_POSITION_WRITE = CapabilityBits.POINT_SOUND_ALLOW_POSITION_WRITE;
/**
* Specifies that this node allows access to its object's distance
* gain attenuation information.
*/
public static final int
ALLOW_DISTANCE_GAIN_READ = CapabilityBits.POINT_SOUND_ALLOW_DISTANCE_GAIN_READ;
/**
* Specifies that this node allows writing to its object's distance
* gain attenuation information.
*/
public static final int
ALLOW_DISTANCE_GAIN_WRITE = CapabilityBits.POINT_SOUND_ALLOW_DISTANCE_GAIN_WRITE;
// Array for setting default read capabilities
private static final int[] readCapabilities = {
ALLOW_POSITION_READ,
ALLOW_DISTANCE_GAIN_READ
};
/**
* Constructs and initializes a new PointSound node using default
* parameters. The following default values are used:
*
* position vector: (0.0, 0.0, 0.0)
* Back attenuation: null
* distance gain attenuation: null (no attenuation performed)
*
*/
public PointSound() {
// Uses default values defined for Sound and PointSound nodes
super();
// set default read capabilities
setDefaultReadCapabilities(readCapabilities);
}
/**
* Constructs a PointSound node object using only the provided parameter
* values for sound data, sample gain, and position. The remaining fields
* are set to the above default values. This form uses a point as input for
* its position.
* @param soundData sound data associated with this sound source node
* @param initialGain amplitude scale factor applied to sound source
* @param position 3D location of source
*/
public PointSound(MediaContainer soundData,
float initialGain,
Point3f position) {
super(soundData, initialGain);
// set default read capabilities
setDefaultReadCapabilities(readCapabilities);
((PointSoundRetained)this.retained).setPosition(position);
}
/**
* Constructs a PointSound node object using only the provided parameter
* values for sound data, sample gain, and position. The remaining fields
* are set to to the above default values. This form uses individual float
* parameters for the elements of the position point.
* @param soundData sound data associated with this sound source node
* @param initialGain amplitude scale factor applied to sound source data
* @param posX x coordinate of location of source
* @param posY y coordinate of location of source
* @param posZ z coordinate of location of source
*/
public PointSound(MediaContainer soundData,
float initialGain,
float posX, float posY, float posZ ) {
super(soundData, initialGain);
// set default read capabilities
setDefaultReadCapabilities(readCapabilities);
((PointSoundRetained)this.retained).setPosition(posX,posY,posZ);
}
// The next four constructors fill all this classes fields with the provided
// arguments values.
// See the header for the setDistanceGain method for details on how the
// those arrays are interpreted.
/**
* Construct a PointSound object accepting Point3f as input for the position
* and accepting an array of Point2f for the distance attenuation values
* where each pair in the array contains a distance and a gain scale factor.
* @param soundData sound data associated with this sound source node
* @param initialGain amplitude scale factor applied to sound source
* @param loopCount number of times loop is looped
* @param release flag denoting playing sound data to end
* @param continuous denotes that sound silently plays when disabled
* @param enable sound switched on/off
* @param region scheduling bounds
* @param priority playback ranking value
* @param position 3D location of source
* @param distanceGain array of (distance,gain) pairs controling attenuation
*/
public PointSound(MediaContainer soundData,
float initialGain,
int loopCount,
boolean release,
boolean continuous,
boolean enable,
Bounds region,
float priority,
Point3f position,
Point2f[] distanceGain) {
super(soundData, initialGain, loopCount, release, continuous,
enable, region, priority );
// set default read capabilities
setDefaultReadCapabilities(readCapabilities);
((PointSoundRetained)this.retained).setPosition(position);
((PointSoundRetained)this.retained).setDistanceGain(distanceGain);
}
/**
* Construct a PointSound object accepting individual float parameters for
* the elements of the position point, and accepting an array of Point2f for
* the distance attenuation values where each pair in the array contains a
* distance and a gain scale factor.
* @param soundData sound data associated with this sound source node
* @param initialGain amplitude scale factor applied to sound source
* @param loopCount number of times loop is looped
* @param release flag denoting playing sound to end
* @param continuous denotes that sound silently plays when disabled
* @param enable sound switched on/off
* @param region scheduling bounds
* @param priority playback ranking value
* @param posX x coordinate of location of source
* @param posY y coordinate of location of source
* @param posZ z coordinate of location of source
* @param distanceGain array of (distance,gain) pairs controling attenuation
*/
public PointSound(MediaContainer soundData,
float initialGain,
int loopCount,
boolean release,
boolean continuous,
boolean enable,
Bounds region,
float priority,
float posX, float posY, float posZ,
Point2f[] distanceGain) {
super(soundData, initialGain, loopCount, release,
continuous, enable, region, priority );
// set default read capabilities
setDefaultReadCapabilities(readCapabilities);
((PointSoundRetained)this.retained).setPosition(posX,posY,posZ);
((PointSoundRetained)this.retained).setDistanceGain(distanceGain);
}
/**
* Construct a PointSound object accepting points as input for the position.
* and accepting separate arrays for the distance and gain scale factors
* components of distance attenuation.
* @param soundData sound data associated with this sound source node
* @param initialGain amplitude scale factor applied to sound source
* @param loopCount number of times loop is looped
* @param release flag denoting playing sound data to end
* @param continuous denotes that sound silently plays when disabled
* @param enable sound switched on/off
* @param region scheduling bounds
* @param priority playback ranking value
* @param position 3D location of source
* @param attenuationDistance array of distance values used for attenuation
* @param attenuationGain array of gain scale factors used for attenuation
*/
public PointSound(MediaContainer soundData,
float initialGain,
int loopCount,
boolean release,
boolean continuous,
boolean enable,
Bounds region,
float priority,
Point3f position,
float[] attenuationDistance,
float[] attenuationGain) {
super(soundData, initialGain, loopCount, release, continuous,
enable, region, priority );
// set default read capabilities
setDefaultReadCapabilities(readCapabilities);
((PointSoundRetained)this.retained).setPosition(position);
((PointSoundRetained)this.retained).setDistanceGain(
attenuationDistance, attenuationGain);
}
/**
* Construct a PointSound object accepting individual float parameters for
* the elements of the position points, and accepting separate arrays for
* the distance and gain scale factors components of distance attenuation.
* @param soundData sound data associated with this sound source node
* @param initialGain amplitude scale factor applied to sound source
* @param loopCount number of times loop is looped
* @param release flag denoting playing sound to end
* @param continuous denotes that sound silently plays when disabled
* @param enable sound switched on/off
* @param region scheduling bounds
* @param priority playback ranking value
* @param posX x coordinate of location of source
* @param posY y coordinate of location of source
* @param posZ z coordinate of location of source
* @param attenuationDistance array of distance values used for attenuation
* @param attenuationGain array of gain scale factors used for attenuation
*/
public PointSound(MediaContainer soundData,
float initialGain,
int loopCount,
boolean release,
boolean continuous,
boolean enable,
Bounds region,
float priority,
float posX, float posY, float posZ,
float[] attenuationDistance,
float[] attenuationGain) {
super(soundData, initialGain, loopCount, release,
continuous, enable, region, priority );
// set default read capabilities
setDefaultReadCapabilities(readCapabilities);
((PointSoundRetained)this.retained).setPosition(posX,posY,posZ);
((PointSoundRetained)this.retained).setDistanceGain(
attenuationDistance, attenuationGain);
}
/**
* Creates the retained mode PointSoundRetained object that this
* PointSound object will point to.
*/
@Override
void createRetained() {
this.retained = new PointSoundRetained();
this.retained.setSource(this);
}
/**
* Sets this sound's location from the vector provided.
* @param position the new location
* @exception CapabilityNotSetException if appropriate capability is
* not set and this object is part of live or compiled scene graph
*/
public void setPosition(Point3f position) {
if (isLiveOrCompiled())
if(!this.getCapability(ALLOW_POSITION_WRITE))
throw new CapabilityNotSetException(J3dI18N.getString("PointSound0"));
((PointSoundRetained)this.retained).setPosition(position);
}
/**
* Sets this sound's position from the three values provided.
* @param x the new x position
* @param y the new y position
* @param z the new z position
* @exception CapabilityNotSetException if appropriate capability is
* not set and this object is part of live or compiled scene graph
*/
public void setPosition(float x, float y, float z) {
if (isLiveOrCompiled())
if(!this.getCapability(ALLOW_POSITION_WRITE))
throw new CapabilityNotSetException(J3dI18N.getString("PointSound0"));
((PointSoundRetained)this.retained).setPosition(x,y,z);
}
/**
* Retrieves this sound's direction and places it in the
* vector provided.
* @param position the variable to receive the direction vector
* @exception CapabilityNotSetException if appropriate capability is
* not set and this object is part of live or compiled scene graph
*/
public void getPosition(Point3f position) {
if (isLiveOrCompiled())
if(!this.getCapability(ALLOW_POSITION_READ))
throw new CapabilityNotSetException(J3dI18N.getString("PointSound2"));
((PointSoundRetained)this.retained).getPosition(position);
}
/**
* Sets this sound's distance gain attenuation - where gain scale factor
* is applied to sound based on distance listener is from sound source.
* This form of setDistanceGain takes these pairs of values as an array of
* Point2f.
* @param attenuation defined by pairs of (distance,gain-scale-factor)
* @exception CapabilityNotSetException if appropriate capability is
* not set and this object is part of live or compiled scene graph
*/
public void setDistanceGain(Point2f[] attenuation) {
if (isLiveOrCompiled())
if(!this.getCapability(ALLOW_DISTANCE_GAIN_WRITE))
throw new CapabilityNotSetException(J3dI18N.getString("PointSound3"));
((PointSoundRetained)this.retained).setDistanceGain(attenuation);
}
/**
* Sets this sound's distance gain attenuation as an array of Point2fs.
* This form of setDistanceGain accepts two separate arrays for these values.
* The distance and gainScale arrays should be of the same length. If the
* gainScale array length is greater than the distance array length, the
* gainScale array elements beyond the length of the distance array are
* ignored. If the gainScale array is shorter than the distance array, the
* last gainScale array value is repeated to fill an array of length equal
* to distance array.
* @param distance array of monotonically-increasing floats
* @param gain array of non-negative scale factors
* @exception CapabilityNotSetException if appropriate capability is
* not set and this object is part of live or compiled scene graph
*/
public void setDistanceGain(float[] distance, float[] gain) {
if (isLiveOrCompiled())
if(!this.getCapability(ALLOW_DISTANCE_GAIN_WRITE))
throw new CapabilityNotSetException(J3dI18N.getString("PointSound3"));
((PointSoundRetained)this.retained).setDistanceGain(distance, gain);
}
/**
* Get the length of this node's distance gain attenuation arrays.
* @return distance gain attenuation array length
* @exception CapabilityNotSetException if appropriate capability is
* not set and this object is part of live or compiled scene graph
*/
public int getDistanceGainLength() {
if (isLiveOrCompiled())
if(!this.getCapability(ALLOW_DISTANCE_GAIN_READ))
throw new CapabilityNotSetException(J3dI18N.getString("PointSound4"));
return (((PointSoundRetained)this.retained).getDistanceGainLength());
}
/**
* Gets this sound's distance attenuation. The distance attenuation
* pairs are copied into the specified array.
* The array must be large enough to hold all of the points.
* The individual array elements must be allocated by the caller.
* @param attenuation arrays containing distance attenuation pairs
* @exception CapabilityNotSetException if appropriate capability is
* not set and this object is part of live or compiled scene graph
*/
public void getDistanceGain(Point2f[] attenuation) {
if (isLiveOrCompiled())
if(!this.getCapability(ALLOW_DISTANCE_GAIN_READ))
throw new CapabilityNotSetException(J3dI18N.getString("PointSound4"));
((PointSoundRetained)this.retained).getDistanceGain(attenuation);
}
/**
* Gets this sound's distance gain attenuation values in separate arrays.
* The arrays must be large enough to hold all of the values.
* @param distance array of float distance from sound source
* @param gain array of non-negative scale factors associated with
* @exception CapabilityNotSetException if appropriate capability is
* not set and this object is part of live or compiled scene graph
*/
public void getDistanceGain(float[] distance, float[] gain) {
if (isLiveOrCompiled())
if(!this.getCapability(ALLOW_DISTANCE_GAIN_READ))
throw new CapabilityNotSetException(J3dI18N.getString("PointSound4"));
((PointSoundRetained)this.retained).getDistanceGain(distance,gain);
}
/**
* Creates a new instance of the node. This routine is called
* by cloneTree to duplicate the current node.
* @param forceDuplicate when set to true, causes the
* duplicateOnCloneTree flag to be ignored. When
* false, the value of each node's
* duplicateOnCloneTree variable determines whether
* NodeComponent data is duplicated or copied.
*
* @see Node#cloneTree
* @see Node#cloneNode
* @see Node#duplicateNode
* @see NodeComponent#setDuplicateOnCloneTree
*/
@Override
public Node cloneNode(boolean forceDuplicate) {
PointSound p = new PointSound();
p.duplicateNode(this, forceDuplicate);
return p;
}
/**
* Copies all node information from originalNode into
* the current node. This method is called from the
* cloneNode method which is, in turn, called by the
* cloneTree method.
*
* For any NodeComponent objects
* contained by the object being duplicated, each NodeComponent
* object's duplicateOnCloneTree value is used to determine
* whether the NodeComponent should be duplicated in the new node
* or if just a reference to the current node should be placed in the
* new node. This flag can be overridden by setting the
* forceDuplicate parameter in the cloneTree
* method to true.
*
* NOTE: Applications should not call this method directly.
* It should only be called by the cloneNode method.
*
* @param originalNode the original node to duplicate.
* @param forceDuplicate when set to true, causes the
* duplicateOnCloneTree flag to be ignored. When
* false, the value of each node's
* duplicateOnCloneTree variable determines whether
* NodeComponent data is duplicated or copied.
* @exception ClassCastException if originalNode is not an instance of
* PointSound
*
* @see Node#cloneTree
* @see Node#cloneNode
* @see NodeComponent#setDuplicateOnCloneTree
*/
@Override
public void duplicateNode(Node originalNode, boolean forceDuplicate) {
checkDuplicateNode(originalNode, forceDuplicate);
}
/**
* Copies all PointSound information from
* originalNode into
* the current node. This method is called from the
* cloneNode method which is, in turn, called by the
* cloneTree method.
*
* @param originalNode the original node to duplicate.
* @param forceDuplicate when set to true, causes the
* duplicateOnCloneTree flag to be ignored. When
* false, the value of each node's
* duplicateOnCloneTree variable determines whether
* NodeComponent data is duplicated or copied.
*
* @exception RestrictedAccessException if this object is part of a live
* or compiled scenegraph.
*
* @see Node#duplicateNode
* @see Node#cloneTree
* @see NodeComponent#setDuplicateOnCloneTree
*/
@Override
void duplicateAttributes(Node originalNode, boolean forceDuplicate) {
super.duplicateAttributes(originalNode, forceDuplicate);
PointSoundRetained orgRetained = (PointSoundRetained)originalNode.retained;
PointSoundRetained thisRetained = (PointSoundRetained)this.retained;
Point3f p = new Point3f();
orgRetained.getPosition(p);
thisRetained.setPosition(p);
int len = orgRetained.getDistanceGainLength();
float distance[] = new float[len];
float gain[] = new float[len];
orgRetained.getDistanceGain(distance, gain);
thisRetained.setDistanceGain(distance, gain);
}
}