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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;
/**
* Class specifying a wakeup the first time an active Viewplatform's
* activation
* volume intersects with this object's scheduling region.
* This gives the behavior an explicit means of executing code when
* it is activated.
*/
public final class WakeupOnActivation extends WakeupCriterion {
// different types of WakeupIndexedList that use in BehaviorStructure
static final int COND_IN_BS_LIST = 0;
// total number of different IndexedUnorderedSet types
static final int TOTAL_INDEXED_UNORDER_SET_TYPES = 1;
/**
* Constructs a new WakeupOnActivation criterion.
*/
public WakeupOnActivation() {
WakeupIndexedList.init(this, TOTAL_INDEXED_UNORDER_SET_TYPES);
}
/**
* This is a callback from BehaviorStructure. It is
* used to add wakeupCondition to behavior structure.
*/
@Override
void addBehaviorCondition(BehaviorStructure bs) {
behav.wakeupArray[BehaviorRetained.WAKEUP_ACTIVATE_INDEX]++;
behav.wakeupMask |= BehaviorRetained.WAKEUP_ACTIVATE;
bs.wakeupOnActivation.add(this);
}
/**
* This is a callback from BehaviorStructure. It is
* used to remove wakeupCondition from behavior structure.
*/
@Override
void removeBehaviorCondition(BehaviorStructure bs) {
behav.wakeupArray[BehaviorRetained.WAKEUP_ACTIVATE_INDEX]--;
if (behav.wakeupArray[BehaviorRetained.WAKEUP_ACTIVATE_INDEX] == 0) {
behav.wakeupMask &= ~BehaviorRetained.WAKEUP_ACTIVATE;
}
bs.wakeupOnActivation.remove(this);
}
/**
* Perform task in addBehaviorCondition() that has to be
* set every time the condition met.
*/
@Override
void resetBehaviorCondition(BehaviorStructure bs) {}
}
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