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* Copyright (C) 2010 Google Inc. All rights reserved.
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Distance models are defined according to the OpenAL specification:
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// http://connect.creativelabs.com/openal/Documentation/OpenAL%201.1%20Specification.htm.
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class DistanceEffect {
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// Returns scalar gain for the given distance the current distance model is used
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double gain(double distance);
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ModelType model() { return m_model; }
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void setModel(ModelType model, bool clamped)
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m_isClamped = clamped;
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void setRefDistance(double refDistance) { m_refDistance = refDistance; }
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void setMaxDistance(double maxDistance) { m_maxDistance = maxDistance; }
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void setRolloffFactor(double rolloffFactor) { m_rolloffFactor = rolloffFactor; }
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double refDistance() const { return m_refDistance; }
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double maxDistance() const { return m_maxDistance; }
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double rolloffFactor() const { return m_rolloffFactor; }
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double linearGain(double distance);
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double inverseGain(double distance);
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double exponentialGain(double distance);
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double m_rolloffFactor;
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} // namespace WebCore