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//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of NVIDIA CORPORATION nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
// OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Copyright (c) 2008-2018 NVIDIA Corporation. All rights reserved.
// Copyright (c) 2004-2008 AGEIA Technologies, Inc. All rights reserved.
// Copyright (c) 2001-2004 NovodeX AG. All rights reserved.
#ifndef PARTICLE_EMITTER_PRESSURE_H
#define PARTICLE_EMITTER_PRESSURE_H
//----------------------------------------------------------------------------//
#include "ParticleEmitter.h"
//----------------------------------------------------------------------------//
class ParticleEmitterPressure : public ParticleEmitter
{
public:
ParticleEmitterPressure(ParticleEmitter::Shape::Enum shape, PxReal extentX, PxReal extentY, PxReal spacing);
virtual ~ParticleEmitterPressure();
virtual void stepInternal(ParticleData& particles, PxReal dt, const PxVec3& externalAcceleration, PxReal maxParticleVelocity);
void setMaxRate(PxReal v) { mMaxRate = v; }
PxReal getMaxRate() const { return mMaxRate; }
private:
struct SiteData
{
PxVec3 position;
PxVec3 velocity;
bool predecessor;
PxReal noiseZ;
};
private:
PxVec3 mSimulationAcceleration;
PxReal mSimulationMaxVelocity;
void clearPredecessors();
bool stepEmissionSite(
SiteData& siteData,
ParticleData& spawnData,
PxU32& spawnNum,
const PxU32 spawnMax,
const PxVec3 &sitePos,
const PxVec3 &siteVel,
const PxReal dt);
void predictPredecessorPos(SiteData& siteData, PxReal dt);
void updatePredecessor(SiteData& siteData, const PxVec3& position, const PxVec3& velocity);
private:
std::vector<SiteData> mSites;
PxReal mMaxZNoiseOffset;
PxReal mMaxRate;
};
//----------------------------------------------------------------------------//
#endif // PARTICLE_EMITTER_PRESSURE_H
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