EmitterLodParamDesc.h

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/*
 * Copyright (c) 2008-2017, NVIDIA CORPORATION.  All rights reserved.
 *
 * NVIDIA CORPORATION and its licensors retain all intellectual property
 * and proprietary rights in and to this software, related documentation
 * and any modifications thereto.  Any use, reproduction, disclosure or
 * distribution of this software and related documentation without an express
 * license agreement from NVIDIA CORPORATION is strictly prohibited.
 */


#ifndef EMITTER_LOD_PARAM_DESC_H
#define EMITTER_LOD_PARAM_DESC_H

#include "Apex.h"

namespace nvidia
{
namespace apex
{


PX_PUSH_PACK_DEFAULT

class EmitterLodParamDesc : public ApexDesc
{
public:
    float  maxDistance;        
    float  distanceWeight;     
    float  speedWeight;        
    float  lifeWeight;         
    float  separationWeight;   
    float  bias;               

    PX_INLINE EmitterLodParamDesc() : ApexDesc()
    {
        init();
    }

    PX_INLINE void setToDefault()
    {
        ApexDesc::setToDefault();
        init();
    }

    PX_INLINE bool isValid() const
    {
        if (distanceWeight < 0.0f || speedWeight < 0.0f || lifeWeight < 0.0f)
        {
            return false;
        }
        if (separationWeight < 0.0f || maxDistance < 0.0f || bias < 0.0f)
        {
            return false;
        }
        return ApexDesc::isValid();
    }

    enum ManifestVersions
    {
        initial,

        count,
        current = count - 1
    };

private:

    PX_INLINE void init()
    {
        // These defaults give you pure distance based LOD weighting
        maxDistance = 0.0f;
        distanceWeight = 1.0f;
        speedWeight = 0.0f;
        lifeWeight = 0.0f;
        separationWeight = 0.0f;
        bias = 1.0f;
    }
};


PX_POP_PACK

}
} // end namespace nvidia

#endif // EMITTER_LOD_PARAM_DESC_H