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      1 /*
      2  * Copyright (C) 2010 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #ifndef Cone_h
     30 #define Cone_h
     31 
     32 #include "FloatPoint3D.h"
     33 
     34 namespace WebCore {
     35 
     36 // Cone gain is defined according to the OpenAL specification
     37 
     38 class ConeEffect {
     39 public:
     40     ConeEffect();
     41 
     42     // Returns scalar gain for the given source/listener positions/orientations
     43     double gain(FloatPoint3D sourcePosition, FloatPoint3D sourceOrientation, FloatPoint3D listenerPosition);
     44 
     45     // Angles in degrees
     46     void setInnerAngle(double innerAngle) { m_innerAngle = innerAngle; }
     47     double innerAngle() const { return m_innerAngle; }
     48 
     49     void setOuterAngle(double outerAngle) { m_outerAngle = outerAngle; }
     50     double outerAngle() const { return m_outerAngle; }
     51 
     52     void setOuterGain(double outerGain) { m_outerGain = outerGain; }
     53     double outerGain() const { return m_outerGain; }
     54 
     55 protected:
     56     double m_innerAngle;
     57     double m_outerAngle;
     58     double m_outerGain;
     59 };
     60 
     61 } // namespace WebCore
     62 
     63 #endif // Cone_h
     64