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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.
*/
#include "Apex.h"
#include "ApexUsingNamespace.h"
#include "EmitterGeomSphereImpl.h"
//#include "ApexSharedSerialization.h"
#include "RenderDebugInterface.h"
#include "RenderDebugInterface.h"
#include "ApexPreview.h"
#include "EmitterGeomSphereParams.h"
namespace nvidia
{
namespace emitter
{
EmitterGeomSphereImpl::EmitterGeomSphereImpl(NvParameterized::Interface* params)
{
NvParameterized::Handle eh(*params);
const NvParameterized::Definition* paramDef;
const char* enumStr = 0;
mGeomParams = (EmitterGeomSphereParams*)params;
mRadius = &(mGeomParams->parameters().radius);
mHemisphere = &(mGeomParams->parameters().hemisphere);
//error check
mGeomParams->getParameterHandle("emitterType", eh);
mGeomParams->getParamEnum(eh, enumStr);
paramDef = eh.parameterDefinition();
mType = EmitterType::ET_RATE;
for (int i = 0; i < paramDef->numEnumVals(); ++i)
{
if (!nvidia::strcmp(paramDef->enumVal(i), enumStr))
{
mType = (EmitterType::Enum)i;
break;
}
}
}
EmitterGeom* EmitterGeomSphereImpl::getEmitterGeom()
{
return this;
}
#ifdef WITHOUT_DEBUG_VISUALIZE
void EmitterGeomSphereImpl::visualize(const PxTransform& , RenderDebugInterface&)
{
}
#else
void EmitterGeomSphereImpl::visualize(const PxTransform& pose, RenderDebugInterface& renderDebug)
{
const float radius = *mRadius;
const float radiusSquared = radius * radius;
const float hemisphere = *mHemisphere;
const float sphereCapBaseHeight = -radius + 2 * radius * hemisphere;
const float sphereCapBaseRadius = PxSqrt(radiusSquared - sphereCapBaseHeight * sphereCapBaseHeight);
using RENDER_DEBUG::DebugColors;
RENDER_DEBUG_IFACE(&renderDebug)->pushRenderState();
RENDER_DEBUG_IFACE(&renderDebug)->setPose(pose);
RENDER_DEBUG_IFACE(&renderDebug)->setCurrentColor(RENDER_DEBUG_IFACE(&renderDebug)->getDebugColor(DebugColors::DarkGreen));
RENDER_DEBUG_IFACE(&renderDebug)->debugSphere(PxVec3(0.0f), *mRadius);
if(hemisphere > 0.0f)
{
RENDER_DEBUG_IFACE(&renderDebug)->setCurrentColor(RENDER_DEBUG_IFACE(&renderDebug)->getDebugColor(DebugColors::DarkPurple));
PxMat44 circlePose = PxMat44(PxIdentity);
circlePose.setPosition(PxVec3(0.0f, sphereCapBaseHeight, 0.0f));
RENDER_DEBUG_IFACE(&renderDebug)->setPose(circlePose);
RENDER_DEBUG_IFACE(&renderDebug)->debugCircle(PxVec3(0.0f), sphereCapBaseRadius, 3);
RENDER_DEBUG_IFACE(&renderDebug)->debugLine(PxVec3(0.0f), PxVec3(0.0f, radius - sphereCapBaseHeight, 0.0f));
for(float t = 0.0f; t < 2 * PxPi; t += PxPi / 3)
{
PxVec3 offset(PxSin(t) * sphereCapBaseRadius, 0.0f, PxCos(t) * sphereCapBaseRadius);
RENDER_DEBUG_IFACE(&renderDebug)->debugLine(offset, PxVec3(0.0f, radius - sphereCapBaseHeight, 0.0f));
}
RENDER_DEBUG_IFACE(&renderDebug)->setPose(PxIdentity);
}
RENDER_DEBUG_IFACE(&renderDebug)->popRenderState();
}
#endif
#ifdef WITHOUT_DEBUG_VISUALIZE
void EmitterGeomSphereImpl::drawPreview(float , RenderDebugInterface*) const
{
}
#else
void EmitterGeomSphereImpl::drawPreview(float scale, RenderDebugInterface* renderDebug) const
{
const float radius = *mRadius;
const float radiusSquared = radius * radius;
const float hemisphere = *mHemisphere;
const float sphereCapBaseHeight = -radius + 2 * radius * hemisphere;
const float sphereCapBaseRadius = PxSqrt(radiusSquared - sphereCapBaseHeight * sphereCapBaseHeight);
using RENDER_DEBUG::DebugColors;
RENDER_DEBUG_IFACE(renderDebug)->pushRenderState();
RENDER_DEBUG_IFACE(renderDebug)->setCurrentColor(RENDER_DEBUG_IFACE(renderDebug)->getDebugColor(DebugColors::DarkGreen),
RENDER_DEBUG_IFACE(renderDebug)->getDebugColor(DebugColors::DarkGreen));
RENDER_DEBUG_IFACE(renderDebug)->debugSphere(PxVec3(0.0f), *mRadius * scale);
if(hemisphere > 0.0f)
{
RENDER_DEBUG_IFACE(renderDebug)->setCurrentColor(RENDER_DEBUG_IFACE(renderDebug)->getDebugColor(DebugColors::DarkPurple));
PxMat44 circlePose = PxMat44(PxIdentity);
circlePose.setPosition(PxVec3(0.0f, sphereCapBaseHeight, 0.0f));
RENDER_DEBUG_IFACE(renderDebug)->setPose(circlePose);
RENDER_DEBUG_IFACE(renderDebug)->debugCircle(PxVec3(0.0f), sphereCapBaseRadius, 3);
RENDER_DEBUG_IFACE(renderDebug)->debugLine(PxVec3(0.0f), PxVec3(0.0f, radius - sphereCapBaseHeight, 0.0f));
for(float t = 0.0f; t < 2 * PxPi; t += PxPi / 3)
{
PxVec3 offset(PxSin(t) * sphereCapBaseRadius, 0.0f, PxCos(t) * sphereCapBaseRadius);
RENDER_DEBUG_IFACE(renderDebug)->debugLine(offset, PxVec3(0.0f, radius - sphereCapBaseHeight, 0.0f));
}
RENDER_DEBUG_IFACE(renderDebug)->setPose(PxIdentity);
}
RENDER_DEBUG_IFACE(renderDebug)->popRenderState();
}
#endif
void EmitterGeomSphereImpl::setEmitterType(EmitterType::Enum t)
{
mType = t;
NvParameterized::Handle eh(*mGeomParams);
const NvParameterized::Definition* paramDef;
//error check
mGeomParams->getParameterHandle("emitterType", eh);
paramDef = eh.parameterDefinition();
mGeomParams->setParamEnum(eh, paramDef->enumVal((int)mType));
}
float EmitterGeomSphereImpl::computeEmitterVolume() const
{
PX_ASSERT(*mHemisphere >= 0.0f);
PX_ASSERT(*mHemisphere <= 1.0f);
float radius = *mRadius;
float hemisphere = 2 * radius * (*mHemisphere);
bool moreThanHalf = true;
if (hemisphere > radius)
{
hemisphere -= radius;
moreThanHalf = false;
}
const float halfSphereVolume = 2.0f / 3.0f * PxPi * radius * radius * radius;
const float sphereCapVolume = 1.0f / 3.0f * PxPi * hemisphere * hemisphere * (3 * radius - hemisphere);
if (moreThanHalf)
{
return halfSphereVolume + sphereCapVolume;
}
else
{
return sphereCapVolume;
}
}
PxVec3 EmitterGeomSphereImpl::randomPosInFullVolume(const PxMat44& pose, QDSRand& rand) const
{
PX_ASSERT(*mHemisphere >= 0.0f);
PX_ASSERT(*mHemisphere <= 1.0f);
const float radius = *mRadius;
const float radiusSquared = radius * radius;
const float hemisphere = *mHemisphere;
const float sphereCapBaseHeight = -radius + 2 * radius * hemisphere;
const float sphereCapBaseRadius = PxSqrt(radiusSquared - sphereCapBaseHeight * sphereCapBaseHeight);
const float horizontalExtents = hemisphere < 0.5f ? radius : sphereCapBaseRadius;
/* bounding box for a sphere cap */
const PxBounds3 boundingBox(PxVec3(-horizontalExtents, sphereCapBaseHeight, -horizontalExtents),
PxVec3(horizontalExtents, radius, horizontalExtents));
PxVec3 pos;
do
{
pos = rand.getScaled(boundingBox.minimum, boundingBox.maximum);
}
while (pos.magnitudeSquared() > radiusSquared);
return pose.transform(pos);
}
bool EmitterGeomSphereImpl::isInEmitter(const PxVec3& pos, const PxMat44& pose) const
{
const PxVec3 localPos = pose.inverseRT().transform(pos);
const float radius = *mRadius;
const float radiusSquared = radius * radius;
const float hemisphere = *mHemisphere;
const float sphereCapBaseHeight = -radius + 2 * radius * hemisphere;
const float sphereCapBaseRadius = PxSqrt(radiusSquared - sphereCapBaseHeight * sphereCapBaseHeight);
const float horizontalExtents = hemisphere < 0.5f ? radius : sphereCapBaseRadius;
/* bounding box for a sphere cap */
const PxBounds3 boundingBox(PxVec3(-horizontalExtents, sphereCapBaseHeight, -horizontalExtents),
PxVec3(horizontalExtents, radius, horizontalExtents));
bool isInSphere = localPos.magnitudeSquared() <= radiusSquared;
bool isInBoundingBox = boundingBox.contains(localPos);
return isInSphere & isInBoundingBox;
}
void EmitterGeomSphereImpl::computeFillPositions(physx::Array<PxVec3>& positions,
physx::Array<PxVec3>& velocities,
const PxTransform& pose,
const PxVec3& scale,
float objRadius,
PxBounds3& outBounds,
QDSRand&) const
{
// we're not doing anything with the velocities array
PX_UNUSED(velocities);
PX_UNUSED(scale);
const float radius = *mRadius;
const float radiusSquared = radius * radius;
const float hemisphere = *mHemisphere;
const float sphereCapBaseHeight = -radius + 2 * radius * hemisphere;
const float sphereCapBaseRadius = PxSqrt(radiusSquared - sphereCapBaseHeight * sphereCapBaseHeight);
const float horizontalExtents = hemisphere < 0.5f ? radius : sphereCapBaseRadius;
uint32_t numX = (uint32_t)PxFloor(horizontalExtents / objRadius);
numX -= numX % 2;
uint32_t numY = (uint32_t)PxFloor((radius - sphereCapBaseHeight) / objRadius);
numY -= numY % 2;
uint32_t numZ = (uint32_t)PxFloor(horizontalExtents / objRadius);
numZ -= numZ % 2;
const float radiusMinusObjRadius = radius - objRadius;
const float radiusMinusObjRadiusSquared = radiusMinusObjRadius * radiusMinusObjRadius;
for (float x = -(numX * objRadius); x <= radiusMinusObjRadius; x += 2 * objRadius)
{
for (float y = sphereCapBaseHeight; y <= radiusMinusObjRadius; y += 2 * objRadius)
{
for (float z = -(numZ * objRadius); z <= radiusMinusObjRadius; z += 2 * objRadius)
{
const PxVec3 p(x, y, z);
if (p.magnitudeSquared() < radiusMinusObjRadiusSquared)
{
positions.pushBack(pose.transform(PxVec3(x, y, z)));
outBounds.include(positions.back());
}
}
}
}
}
}
} // namespace nvidia::apex
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