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// Copyright 2021 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#ifdef OSPRAY_ENABLE_VOLUMES
#pragma once
#ifdef __cplusplus
namespace ispc {
#endif // __cplusplus
struct Volume;
struct TransferFunction;
struct VolumetricModel
{
Volume *volume;
TransferFunction *transferFunction;
VKLIntervalIteratorContext vklIntervalContext;
box3f boundingBox;
// Volume parameters understood by the pathtracer
float densityScale;
float anisotropy; // the anisotropy of the volume's phase function
// (Heyney-Greenstein)
float gradientShadingScale;
unsigned int userID;
#ifdef __cplusplus
VolumetricModel()
: volume(nullptr),
transferFunction(nullptr),
vklIntervalContext(VKLIntervalIteratorContext()),
boundingBox(0.f),
densityScale(1.f),
anisotropy(0.f),
gradientShadingScale(0.f),
userID(RTC_INVALID_GEOMETRY_ID)
{}
};
} // namespace ispc
#else
};
#endif // __cplusplus
#endif
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