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/*
* $RCSfile$
*
* Copyright (c) 2007 Sun Microsystems, Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any
* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
* EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
* NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
* USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
* ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
* CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
* REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
* INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed, licensed or
* intended for use in the design, construction, operation or
* maintenance of any nuclear facility.
*
* $Revision$
* $Date$
* $State$
*/
package com.sun.j3d.loaders;
import java.io.FileNotFoundException;
import java.io.Reader;
import java.net.URL;
/**
* The Loader interface is used to specify the location
* and elements of a file format to load.
* The interface is used to give loaders of various
* file formats a common public interface. Ideally
* the Scene interface will be implemented to give
* the user a consistent interface to extract the
* data.
*
* @see com.sun.j3d.loaders.Scene
*/
public interface Loader {
// These are the values to be used in constructing the
// load flags for the loader. Users should OR the selected
// values together to construct an aggregate flag integer
// (see the setFlags() method). Users wishing to load all
// data in a file should use the LOAD_ALL specifier.
/** This flag enables the loading of light objects into the scene.*/
public static final int LOAD_LIGHT_NODES = 1;
/** This flag enables the loading of fog objects into the scene.*/
public static final int LOAD_FOG_NODES = 2;
/** This flag enables the loading of background objects into the scene.*/
public static final int LOAD_BACKGROUND_NODES = 4;
/** This flag enables the loading of behaviors into the scene.*/
public static final int LOAD_BEHAVIOR_NODES = 8;
/** This flag enables the loading of view (camera) objects into
* the scene.*/
public static final int LOAD_VIEW_GROUPS = 16;
/** This flag enables the loading of sound objects into the scene.*/
public static final int LOAD_SOUND_NODES = 32;
/** This flag enables the loading of all objects into the scene.*/
public static final int LOAD_ALL = 0xffffffff;
// Loading methods
/**
* This method loads the named file and returns the Scene
* containing the scene. Any data files referenced by this
* file should be located in the same place as the named file;
* otherwise users should specify an alternate base path with
* the setBasePath(String) method.
*/
public Scene load(String fileName) throws FileNotFoundException,
IncorrectFormatException, ParsingErrorException;
/**
* This method loads the named file and returns the Scene
* containing the scene. Any data files referenced by the Reader
* should be located in the same place as the named file; otherwise,
* users should specify an alternate base path with the setBaseUrl(URL)
* method.
*/
public Scene load(URL url) throws FileNotFoundException,
IncorrectFormatException, ParsingErrorException;
/**
* This method loads the Reader and returns the Scene
* containing the scene. Any data files referenced by the Reader should
* be located in the user's current working directory.
*/
public Scene load(Reader reader)
throws FileNotFoundException, IncorrectFormatException,
ParsingErrorException;
// Variable get/set methods
/**
* This method sets the base URL name for data files associated with
* the file passed into the load(URL) method.
* The basePath should be null by default, which is an indicator
* to the loader that it should look for any associated files starting
* from the same directory as the file passed into the load(URL) method.
*/
public void setBaseUrl(URL url);
/**
* This method sets the base path name for data files associated with
* the file passed into the load(String) method.
* The basePath should be null by default, which is an indicator
* to the loader that it should look for any associated files starting
* from the same directory as the file passed into the load(String)
* method.
*/
public void setBasePath(String pathName);
/**
* Returns the current base URL setting. By default this is null,
* implying the loader should look for associated files starting
* from the same directory as the file passed into the load(URL) method.
*/
public URL getBaseUrl();
/**
* Returns the current base path setting. By default this is null,
* implying the loader should look for associated files starting
* from the same directory as the file passed into the load(String)
* method.
*/
public String getBasePath();
/**
* This method sets the load flags for the file. The flags should
* equal 0 by default (which tells the loader to only load geometry).
* To enable the loading of any particular scene elements, pass
* in a logical OR of the LOAD values specified above.
*/
public void setFlags(int flags);
/**
* Returns the current loading flags setting.
*/
public int getFlags();
}
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