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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 "platform/PlatformExport.h"
33 #include "platform/geometry/FloatPoint3D.h"
34 
35 namespace blink {
36 
37 // Cone gain is defined according to the OpenAL specification
38 
39 class PLATFORM_EXPORT ConeEffect {
40 public:
41     ConeEffect();
42 
43     // Returns scalar gain for the given source/listener positions/orientations
44     double gain(FloatPoint3D sourcePosition, FloatPoint3D sourceOrientation, FloatPoint3D listenerPosition);
45 
46     // Angles in degrees
setInnerAngle(double innerAngle)47     void setInnerAngle(double innerAngle) { m_innerAngle = innerAngle; }
innerAngle()48     double innerAngle() const { return m_innerAngle; }
49 
setOuterAngle(double outerAngle)50     void setOuterAngle(double outerAngle) { m_outerAngle = outerAngle; }
outerAngle()51     double outerAngle() const { return m_outerAngle; }
52 
setOuterGain(double outerGain)53     void setOuterGain(double outerGain) { m_outerGain = outerGain; }
outerGain()54     double outerGain() const { return m_outerGain; }
55 
56 protected:
57     double m_innerAngle;
58     double m_outerAngle;
59     double m_outerGain;
60 };
61 
62 } // namespace blink
63 
64 #endif // Cone_h
65