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MpmSimulator.cpp
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MpmSimulator.cpp
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#include "stdafx.h"
#include "MpmSimulator.h"
const char* MpmSimulator::m_nodeName = "MpmSimulator";
MTypeId MpmSimulator::m_id(0x00108A60);
MObject MpmSimulator::s_boxMin;
MObject MpmSimulator::s_boxMax;
MObject MpmSimulator::s_cellSize;
MObject MpmSimulator::s_nParticlePerCell;
MObject MpmSimulator::s_boundary;
MObject MpmSimulator::s_particleDensity;
MObject MpmSimulator::s_youngs;
MObject MpmSimulator::s_poisson;
MObject MpmSimulator::s_hardening;
MObject MpmSimulator::s_criticalCompression;
MObject MpmSimulator::s_criticalStretch;
MObject MpmSimulator::s_friction;
MObject MpmSimulator::s_flip;
MObject MpmSimulator::s_gravity;
MObject MpmSimulator::s_deltaT;
MObject MpmSimulator::s_nSubStep;
MObject MpmSimulator::s_initParticle;
MObject MpmSimulator::s_initType;
MObject MpmSimulator::s_initTrans0;
MObject MpmSimulator::s_initTrans1;
MObject MpmSimulator::s_initDeltaTime;
MObject MpmSimulator::s_outputParticle;
MObject MpmSimulator::s_inputParticle;
MObject MpmSimulator::s_sampleRate;
MObject MpmSimulator::s_particleStr;
MObject MpmSimulator::s_numSampledParticle;
MObject MpmSimulator::s_outputVDB;
MObject MpmSimulator::s_vdbHalfWidth;
MObject MpmSimulator::s_vdbVoxelSize;
MObject MpmSimulator::s_vdbVolumeFactor;
MObject MpmSimulator::s_vdbVelocityFactor;
MObject MpmSimulator::s_vdbVelocitySampleDistance;
MObject MpmSimulator::s_vdbType;
MObject MpmSimulator::s_vdbRmin;
MObject MpmSimulator::s_vdbRmax;
MObject MpmSimulator::s_time;
MObject MpmSimulator::s_immediateUpdate;
MObject MpmSimulator::s_saveFilePrefix;
MObject MpmSimulator::s_saveFilePath;
MObject MpmSimulator::s_saveEveryFrame;
MObject MpmSimulator::s_colliderVdb;
MObject MpmSimulator::s_colliderTrans;
MObject MpmSimulator::s_displayType;
MObject MpmSimulator::s_displaySdf;
MObject MpmSimulator::s_displaySdfVel;
MObject MpmSimulator::s_displayGrid;
const char* MpmSimulator::s_displayTypeName[2]={"displayType","disptype"};
const char* MpmSimulator::s_displaySdfName[2]={"displaySdf", "dispsdf"};
const char* MpmSimulator::s_displaySdfVelName[2]={"displaySdfVelocity", "dispsdfvel"};
const char* MpmSimulator::s_displayGridName[2]={"displayCell","dispcell"};
const char* MpmSimulator::s_colliderTransName[2]={"colliderTrans", "cldrtrans"};
const char* MpmSimulator::s_colliderVdbName[2]={"colliderVdb","cldrvdb"};
const char* MpmSimulator::s_saveEveryFrameName[2]={"saveEveryFrame","saveef"};
const char* MpmSimulator::s_saveFilePathName[2]={"saveFolder","savefdr"};
const char* MpmSimulator::s_saveFilePrefixName[2]={"saveFilePrefix","savefpfx"};
const char* MpmSimulator::s_vdbRminName[2]={"minParticleRadius", "minptclr"};
const char* MpmSimulator::s_vdbRmaxName[2]={"maxParticleRadius", "maxptclr"};
const char* MpmSimulator::s_immediateUpdateName[2]={"immediateUpdate", "imupdate"};
const char* MpmSimulator::s_timeName[2]={"time", "time"};
const char* MpmSimulator::s_vdbTypeName[2]={"vdbType", "vdbtp"};
const char* MpmSimulator::s_vdbVelocitySampleDistanceName[2]={"vdbVelocitySampleDist", "vdbvelspldst"};
const char* MpmSimulator::s_vdbVelocityFactorName[2]={"vdbVelocityFactor", "vdbvelftr"};
const char* MpmSimulator::s_vdbVolumeFactorName[2]={"vdbVolumeFactor", "vdbvftr"};
const char* MpmSimulator::s_vdbHalfWidthName[2]={"vdbHalfWidth","vdbhw"};
const char* MpmSimulator::s_vdbVoxelSizeName[2]={"vdbVoxelSize", "vdbvsize"};
const char* MpmSimulator::s_outputVDBName[2]={"outputVDB","outvdb"};
const char* MpmSimulator::s_numSampledParticleName[2]={"numSampledParticle","nsplptcl"};
const char* MpmSimulator::s_particleStrName[2]={"particleName","ptclname"};
const char* MpmSimulator::s_sampleRateName[2]={"particleSampleRate","psplrt"};
const char* MpmSimulator::s_outputParticleName[2]={"outputParticle", "outptcl"};
const char* MpmSimulator::s_inputParticleName[2]={"inputParticle", "inptcl"};
const char* MpmSimulator::s_boxMinName[2]={"boxMin","bMin"};
const char* MpmSimulator::s_boxMaxName[2]={"boxMax","bMax"};
const char* MpmSimulator::s_cellSizeName[2]={"cellSize","cSize"};
const char* MpmSimulator::s_nParticlePerCellName[2]={"particlePerCell", "ppc"};
const char* MpmSimulator::s_boundaryName[2]={"boundary","bnd"};
const char* MpmSimulator::s_particleDensityName[2]={"particleDensity","pdensity"};
const char* MpmSimulator::s_youngsName[2]={"youngsModulus","ym"};
const char* MpmSimulator::s_poissonName[2]={"possionRatio","pr"};
const char* MpmSimulator::s_hardeningName[2]={"hardeningFactor","hf"};
const char* MpmSimulator::s_criticalCompressionName[2]={"criticalCompression","cc"};
const char* MpmSimulator::s_criticalStretchName[2]={"criticalStretch","cs"};
const char* MpmSimulator::s_frictionName[2]={"friction","fr"};
const char* MpmSimulator::s_flipName[2]={"flipPercent","fp"};
const char* MpmSimulator::s_gravityName[2]={"gravity","gr"};
const char* MpmSimulator::s_deltaTName[2]={"deltaTime","dt"};
const char* MpmSimulator::s_nSubStepName[2]={"numberOfSubsteps","noss"};
const char* MpmSimulator::s_initParticleName[2]={"initParticle","iptl"};
const char* MpmSimulator::s_initTypeName[2]={"initType","intp"};
const char* MpmSimulator::s_initTrans0Name[2]={"initStartTransform", "initstr"};
const char* MpmSimulator::s_initTrans1Name[2]={"initEndTransform", "initetr"};
const char* MpmSimulator::s_initDeltaTimeName[2]={"initDeltaTime", "initdt"};
MpmSimulator::MpmSimulator(void)
{
m_box = MBoundingBox(MPoint(-1.1,-0.5,-1.1), MPoint(4.1,0.5,1.1));
}
MpmSimulator::~MpmSimulator(void)
{
}
int MpmSimulator::getCurFrame()
{
int curFrame = 1;
MGlobal::executeCommand("currentTime -q", curFrame);
return curFrame;
}
void MpmSimulator::draw( M3dView & view, const MDagPath & path, M3dView::DisplayStyle style, M3dView:: DisplayStatus )
{
int ithFrame = getCurFrame();
MPlug displayTypePlug = Global::getPlug(this, s_displayTypeName[0]);
if (displayTypePlug.asShort() == DISP_LAST_FRAME)
{
ithFrame--;
}
view.beginGL();
glPushAttrib(GL_CURRENT_BIT);
drawIcon();
// 保证在世界空间模拟，所以需要抵消自身矩阵
MMatrix mat = path.inclusiveMatrixInverse();
double matBuf[4][4];
mat.get(matBuf);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glMultMatrixd(&matBuf[0][0]);
{
drawCell();
MPlug sdfPlug = Global::getPlug(this, s_displaySdfName[0]);
MPlug sdfVelPlug = Global::getPlug(this, s_displaySdfVelName[0]);
if (sdfPlug.asBool())
drawSdf(ithFrame, true, true, sdfVelPlug.asBool(), true);
m_box = MBoundingBox(MPoint(-1.1,-0.5,-1.1), MPoint(4.1,0.5,1.1));
const MpmStatus* status = m_core.getRecorder().getStatusPtr(ithFrame);
if(status)
{
status->draw();
}
Vector3f minPnt, cellSize;
Vector3i nCell;
m_core.getGridConfig(minPnt, cellSize, nCell);
Vector3f maxPnt = minPnt + cellSize.cwiseProduct(nCell.cast<float>());
MPoint boxMin = MPoint(minPnt[0],minPnt[1],minPnt[2])*mat;
MPoint boxMax = MPoint(maxPnt[0],maxPnt[1],maxPnt[2])*mat;
m_box = MBoundingBox(MPoint(-1.1,-0.5,-1.1), MPoint(4.1,0.5,1.1));
m_box.expand(boxMin);
m_box.expand(boxMax);
}
glPopAttrib();
view.endGL();
}
void MpmSimulator::postConstructor()
{
MStatus s;
MFnDependencyNode nodeFn(thisMObject(), &s);
if (s)
{
nodeFn.setName( "MpmSimulatorShape#", &s);
}
}
void MpmSimulator::drawSdf( int frame, bool showCurrent /*= true*/, bool showPrev /*= false*/, bool showCurrentVel /*= true*/, bool showPrevVel /*= false*/ )
{
const MpmStatus* pS = m_core.getRecorder().getStatusPtr(frame);
if(!pS)
return;
Vector3f grid_min, grid_size;
Vector3i grid_division;
m_core.getGridConfig(grid_min, grid_size, grid_division);
const vector<MpmStatus::GridData>& gridData = pS->getGridData();
if (gridData.size() <= 0)
{
return;
}
glPointSize(2.f);
Vector3f offset0 = grid_size * 0.3;
Vector3f offset1 = grid_size * 0.1;
const MpmStatus::GridData* pCell = &gridData[0];
for (int k = 0; k < grid_division[2]; ++k)
{
for (int j = 0; j < grid_division[1]; ++j)
{
for (int i = 0; i < grid_division[0]; ++i, ++pCell)
{
Vector3f cellOri = grid_min + grid_size.cwiseProduct(Vector3f(i,j,k));
if (pCell->m_collisionSdf < 0)
{
Vector3f pos = cellOri + offset0;
if (showCurrent)
{
float v = -pCell->m_collisionSdf;
float alpha = (v > 1.f ? 1.f : v);
glColor4f(255/255.f,201/255.f,14/255.f, alpha);
glBegin(GL_POINTS);
glVertex3f(pos[0], pos[1], pos[2]);
glEnd();
}
if (showCurrentVel)
{
Vector3f end = pos + pCell->m_collisionVelocity * 1/24.0;
glColor4f(255/255.f,201/255.f,14/255.f,255/255.f);
glBegin(GL_LINES);
glVertex3f(pos[0], pos[1], pos[2]);
glVertex3f(end[0], end[1], end[2]);
glEnd();
}
}
}
}
}
}
void MpmSimulator::drawCell()
{
Vector3f minPnt, cellSize;
Vector3i nCell;
m_core.getGridConfig(minPnt, cellSize, nCell);
Vector3f maxPnt = minPnt + cellSize.cwiseProduct(nCell.cast<float>());
glBegin(GL_LINE_LOOP);
glVertex3f(minPnt[0],minPnt[1],minPnt[2]);
glVertex3f(maxPnt[0],minPnt[1],minPnt[2]);
glVertex3f(maxPnt[0],maxPnt[1],minPnt[2]);
glVertex3f(minPnt[0],maxPnt[1],minPnt[2]);
glEnd();
glBegin(GL_LINE_LOOP);
glVertex3f(minPnt[0],minPnt[1],maxPnt[2]);
glVertex3f(maxPnt[0],minPnt[1],maxPnt[2]);
glVertex3f(maxPnt[0],maxPnt[1],maxPnt[2]);
glVertex3f(minPnt[0],maxPnt[1],maxPnt[2]);
glEnd();
glBegin(GL_LINES);
glVertex3f(minPnt[0],minPnt[1],minPnt[2]);
glVertex3f(minPnt[0],minPnt[1],maxPnt[2]);
glVertex3f(maxPnt[0],minPnt[1],minPnt[2]);
glVertex3f(maxPnt[0],minPnt[1],maxPnt[2]);
glVertex3f(minPnt[0],maxPnt[1],minPnt[2]);
glVertex3f(minPnt[0],maxPnt[1],maxPnt[2]);
glVertex3f(maxPnt[0],maxPnt[1],minPnt[2]);
glVertex3f(maxPnt[0],maxPnt[1],maxPnt[2]);
glEnd();
MPlug cellPlug = Global::getPlug(this, s_displayGridName[0]);
if (cellPlug.asBool())
{
glBegin(GL_LINES);
for (int i = 0; i < nCell[0]; ++i)
{
glVertex3f(minPnt[0]+i*cellSize[0], minPnt[1], minPnt[2]);
glVertex3f(minPnt[0]+i*cellSize[0], minPnt[1], maxPnt[2]);
}
for (int i = 0; i < nCell[2]; ++i)
{
glVertex3f(minPnt[0], minPnt[1], minPnt[2]+i*cellSize[2]);
glVertex3f(maxPnt[0], minPnt[1], minPnt[2]+i*cellSize[2]);
}
glEnd();
}
}
void MpmSimulator::drawIcon()
{
float p[][3] = {{0.5,0,-1},{0.8,0,1},{-1,0,1},{0.2,0,0.4}};
glBegin(GL_LINE_LOOP);
glVertex3fv(p[0]);
glVertex3fv(p[1]);
glVertex3fv(p[2]);
glEnd();
glBegin(GL_LINES);
glVertex3fv(p[0]);
glVertex3fv(p[3]);
glVertex3fv(p[1]);
glVertex3fv(p[3]);
glVertex3fv(p[2]);
glVertex3fv(p[3]);
glEnd();
// draw "MPM"
glBegin(GL_LINE_STRIP);
glVertex3f(1,0,1);
glVertex3f(1,0,0);
glVertex3f(1.4,0,0.7);
glVertex3f(1.8,0,0);
glVertex3f(1.8,0,1);
glEnd();
glBegin(GL_LINE_STRIP);
glVertex3f(2,0,0.5);
glVertex3f(2.8,0,0.5);
glVertex3f(2.8,0,0);
glVertex3f(2,0,0);
glVertex3f(2,0,1);
glEnd();
glBegin(GL_LINE_STRIP);
glVertex3f(3,0,1);
glVertex3f(3,0,0);
glVertex3f(3.4,0,0.7);
glVertex3f(3.8,0,0);
glVertex3f(3.8,0,1);
glEnd();
}
MBoundingBox MpmSimulator::boundingBox() const
{
return m_box;
}
int MpmSimulator::getNumSampledParticle()
{
MPlug samplePlug= Global::getPlug(this, s_sampleRateName[0]);
int curFrame = getCurFrame();
MpmStatus status;
bool res = m_core.getRecorder().getStatus(curFrame, status);
if (!res || status.getParticleCount() <= 0)
return 0;
int sampleRate = samplePlug.asInt();
int sampledNum = (status.getParticleCount()-1)/sampleRate+1;
PRINT_F("total ptcl: %d sampled ptcl: %d", status.getParticleCount(), sampledNum);
return sampledNum;
}
class MyParticleList
{
protected:
struct MyParticle {
openvdb::Vec3R p, v;
openvdb::Real r;
};
openvdb::Real mRadiusScale;
openvdb::Real mVelocityScale;
std::vector<MyParticle> mParticleList;
public:
typedef openvdb::Vec3R PosType;
MyParticleList(openvdb::Real rScale=1, openvdb::Real vScale=1)
: mRadiusScale(rScale), mVelocityScale(vScale) {}
void add(const openvdb::Vec3R &p, const openvdb::Real &r,
const openvdb::Vec3R &v=openvdb::Vec3R(0,0,0))
{
MyParticle pa;
pa.p = p;
pa.r = r;
pa.v = v;
mParticleList.push_back(pa);
}
/// @return coordinate bbox in the space of the specified transfrom
openvdb::CoordBBox getBBox(const openvdb::GridBase& grid) {
openvdb::CoordBBox bbox;
openvdb::Coord &min= bbox.min(), &max = bbox.max();
openvdb::Vec3R pos;
openvdb::Real rad, invDx = 1/grid.voxelSize()[0];
for (size_t n=0, e=this->size(); n<e; ++n) {
this->getPosRad(n, pos, rad);
const openvdb::Vec3d xyz = grid.worldToIndex(pos);
const openvdb::Real r = rad * invDx;
for (int i=0; i<3; ++i) {
min[i] = openvdb::math::Min(min[i], openvdb::math::Floor(xyz[i] - r));
max[i] = openvdb::math::Max(max[i], openvdb::math::Ceil( xyz[i] + r));
}
}
return bbox;
}
//typedef int AttributeType;
// The methods below are only required for the unit-tests
openvdb::Vec3R pos(int n) const {return mParticleList[n].p;}
openvdb::Vec3R vel(int n) const {return mVelocityScale*mParticleList[n].v;}
openvdb::Real radius(int n) const {return mRadiusScale*mParticleList[n].r;}
//////////////////////////////////////////////////////////////////////////////
/// The methods below are the only ones required by tools::ParticleToLevelSet
/// @note We return by value since the radius and velocities are modified
/// by the scaling factors! Also these methods are all assumed to
/// be thread-safe.
/// Return the total number of particles in list.
/// Always required!
size_t size() const { return mParticleList.size(); }
/// Get the world space position of n'th particle.
/// Required by ParticledToLevelSet::rasterizeSphere(*this,radius).
void getPos(size_t n, openvdb::Vec3R&pos) const { pos = mParticleList[n].p; }
void getPosRad(size_t n, openvdb::Vec3R& pos, openvdb::Real& rad) const {
pos = mParticleList[n].p;
rad = mRadiusScale*mParticleList[n].r;
}
void getPosRadVel(size_t n, openvdb::Vec3R& pos, openvdb::Real& rad, openvdb::Vec3R& vel) const {
pos = mParticleList[n].p;
rad = mRadiusScale*mParticleList[n].r;
vel = mVelocityScale*mParticleList[n].v;
}
// The method below is only required for attribute transfer
void getAtt(size_t n, openvdb::Index32& att) const { att = openvdb::Index32(n); }
};
MStatus MpmSimulator::computeVDB(openvdb::FloatGrid::Ptr& ls, float voxelSize, float halfWidth, float volumeFactor)
{
MStatus s;
int ithFrame = getCurFrame();
MpmStatus result;
if (!m_core.getRecorder().getStatus(ithFrame, result))
return MS::kFailure;
MPlug velocityFtrPlug = Global::getPlug(this, s_vdbVelocityFactorName[0]);
MPlug vdbTypePlug = Global::getPlug(this, s_vdbTypeName[0]);
short type = vdbTypePlug.asShort();
const deque<Particle>& ptclList = result.getParticle();
MyParticleList pa(volumeFactor, velocityFtrPlug.asFloat());
const float factor = 3.f / (4.f * 3.14159265);
for (int i = 0; i < ptclList.size(); ++i)
{
const Particle& ptcl = ptclList[i];
const Vector3f& pos = ptcl.position;
const Vector3f& vel = ptcl.velocity;
float radius = pow(ptcl.volume * factor, 1.f/3.f);
openvdb::Vec3R velocity(0,0,0);
if (type == RASTERIZE_TRAIL)
{
velocity = openvdb::Vec3R(vel[0],vel[1],vel[2]);
}
pa.add(openvdb::Vec3R(pos[0], pos[1], pos[2]), radius, velocity);
}
ls = openvdb::createLevelSet<openvdb::FloatGrid>(voxelSize, halfWidth);
ls->setName("outVDB");
openvdb::tools::ParticlesToLevelSet<openvdb::FloatGrid> raster(*ls);
MPlug rminPlug = Global::getPlug(this, s_vdbRminName[0]);
MPlug rmaxPlug = Global::getPlug(this, s_vdbRmaxName[0]);
raster.setRmin(min(rminPlug.asFloat(), rmaxPlug.asFloat()));
raster.setRmax(max(rminPlug.asFloat(), rmaxPlug.asFloat()));
raster.setGrainSize(1);//a value of zero disables threading
if (type == RASTERIZE_SPHERE)
{
raster.rasterizeSpheres(pa);
}
else
{
MPlug sampleDistPlug = Global::getPlug(this, s_vdbVelocitySampleDistanceName[0]);
raster.rasterizeTrails(pa, sampleDistPlug.asFloat());
}
raster.finalize();
return s;
}
MStatus MpmSimulator::compute( const MPlug& plug, MDataBlock& data )
{
MStatus s;
if (plug == s_outputParticle)
{
MPlug inputPlug = Global::getPlug(this, s_inputParticleName[0]);
MPlug outputPlug= Global::getPlug(this, s_outputParticleName[0]);
MPlug samplePlug= Global::getPlug(this, s_sampleRateName[0]);
if (inputPlug.isConnected() && outputPlug.isConnected())
{
MObject inputObj = inputPlug.asMObject();
CHECK_MSTATUS_AND_RETURN_IT(s);
MFnNObjectData inputFn(inputObj, &s);
CHECK_MSTATUS_AND_RETURN_IT(s);
MnParticle* inputPtr = inputFn.getParticleObjectPtr(&s);
CHECK_MSTATUS_AND_RETURN_IT(s);
if (!inputPtr)
goto COMPUTE_END;
int count = getNumSampledParticle();
if (count <= 0)
goto COMPUTE_END;
inputPtr->setTopology(count);
MFloatPointArray positionList, velocityList;
s=inputPtr->getPositions(positionList);
CHECK_MSTATUS_AND_RETURN_IT(s);
s=inputPtr->getVelocities(velocityList);
CHECK_MSTATUS_AND_RETURN_IT(s);
MpmStatus status;
bool res = m_core.getRecorder().getStatus(getCurFrame(), status);
int sampleRate = samplePlug.asInt();
PRINT_F("sampleRate %d, count %d", sampleRate, count);
for (int ithPos = 0, ithSample = 0; ithPos < count; ithPos++, ithSample += sampleRate)
{
Vector3f newPos, newVel;
status.getParticlePos(ithSample, newPos);
status.getParticleVelocity(ithSample, newVel);
positionList[ithPos] = MFloatPoint(newPos[0],newPos[1],newPos[2],1.f);
velocityList[ithPos] = MFloatPoint(newVel[0],newVel[1],newVel[2],1.f);
}
s=inputPtr->setPositions(positionList);
CHECK_MSTATUS_AND_RETURN_IT(s);
s=inputPtr->setVelocities(velocityList);
CHECK_MSTATUS_AND_RETURN_IT(s);
outputPlug.setMObject(inputObj);
}
}
else if (plug == s_numSampledParticle)
{
int frame = getCurFrame();
MPlug numPtclPlug = Global::getPlug(this, s_numSampledParticleName[0]);
numPtclPlug.setInt(getNumSampledParticle());
}
else if (plug == s_outputVDB)
{
MPlug imupdatePlug = Global::getPlug(this, s_immediateUpdateName[0]);
if (imupdatePlug.asBool())
{
MPlug voxelSizePlug = Global::getPlug(this, s_vdbVoxelSizeName[0]);
MPlug halfWidthPlug = Global::getPlug(this, s_vdbHalfWidthName[0]);
MPlug volumeFactorPlug= Global::getPlug(this, s_vdbVolumeFactorName[0]);
openvdb::FloatGrid::Ptr ls;
s = computeVDB(ls, voxelSizePlug.asFloat(), halfWidthPlug.asFloat(), volumeFactorPlug.asFloat());
CHECK_MSTATUS_AND_RETURN_IT(s);
MPlug outputVDBPlug = Global::getPlug(this, s_outputVDBName[0]);
MFnPluginData valFn;
MObject valObj = valFn.create(OpenVDBData::id, &s);
CHECK_MSTATUS_AND_RETURN_IT(s);
OpenVDBData* data = (OpenVDBData*)valFn.data(&s);
CHECK_MSTATUS_AND_RETURN_IT(s);
if (!data)
goto COMPUTE_END;
data->insert(ls);
outputVDBPlug.setMObject(valObj);
}
}
COMPUTE_END:
data.setClean(plug);
return s;
}
void* MpmSimulator::creator()
{
return new MpmSimulator;
}
MStatus MpmSimulator::initialize()
{
MStatus s;
MFnNumericAttribute nAttr;
MFnMatrixAttribute mAttr;
MFnTypedAttribute tAttr;
MFnEnumAttribute eAttr;
MFnUnitAttribute uAttr;
MFnCompoundAttribute cAttr;
// solver param
{
s_time = uAttr.create(s_timeName[0], s_timeName[1], MFnUnitAttribute::kTime,1, &s);
uAttr.setKeyable(true);
uAttr.setStorable(false);
uAttr.setHidden(false);
uAttr.setWritable(true);
uAttr.setReadable(false);
uAttr.setAffectsAppearance(true);
s = addAttribute(s_time);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_boxMin = nAttr.create(s_boxMinName[0], s_boxMinName[1], MFnNumericData::k3Float, -2, &s);
nAttr.setStorable(true);
nAttr.setWritable(true);
s = addAttribute(s_boxMin);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_boxMax = nAttr.create(s_boxMaxName[0], s_boxMaxName[1], MFnNumericData::k3Float, 2, &s);
nAttr.setStorable(true);
nAttr.setWritable(true);
s = addAttribute(s_boxMax);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_cellSize = nAttr.create(s_cellSizeName[0], s_cellSizeName[1], MFnNumericData::k3Float, 0.25, &s);
nAttr.setStorable(true);
nAttr.setWritable(true);
nAttr.setMin(0.01);
s = addAttribute(s_cellSize);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_nParticlePerCell = nAttr.create(s_nParticlePerCellName[0], s_nParticlePerCellName[1], MFnNumericData::kShort, 8, &s);
nAttr.setStorable(true);
nAttr.setWritable(true);
nAttr.setMin(1);
nAttr.setMax(200);
s = addAttribute(s_nParticlePerCell);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_boundary = nAttr.create(s_boundaryName[0], s_boundaryName[1], MFnNumericData::kShort, 2, &s);
nAttr.setStorable(true);
nAttr.setWritable(true);
nAttr.setMin(0);
nAttr.setMax(10);
s = addAttribute(s_boundary);
CHECK_MSTATUS_AND_RETURN_IT(s);
}
// physical param
{
s_particleDensity = nAttr.create(s_particleDensityName[0], s_particleDensityName[1], MFnNumericData::kFloat, 400, &s);
nAttr.setMin(1e-5);
nAttr.setMax(1e12);
nAttr.setSoftMin(10);
nAttr.setSoftMax(10000);
s = addAttribute(s_particleDensity);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_youngs = nAttr.create(s_youngsName[0], s_youngsName[1], MFnNumericData::kFloat, 1.4e5, &s);
nAttr.setMin(1e-5);
nAttr.setMax(1e12);
nAttr.setSoftMin(1e4);
nAttr.setSoftMax(10e4);
s = addAttribute(s_youngs);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_poisson = nAttr.create(s_poissonName[0], s_poissonName[1], MFnNumericData::kFloat, 0.2, &s);
nAttr.setMin(1e-3);
nAttr.setMax(1e2);
nAttr.setSoftMin(0.05);
nAttr.setSoftMax(0.5);
s = addAttribute(s_poisson);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_hardening = nAttr.create(s_hardeningName[0], s_hardeningName[1], MFnNumericData::kFloat, 10.f, &s);
nAttr.setMin(0);
nAttr.setMax(1e4);
nAttr.setSoftMin(3);
nAttr.setSoftMax(30);
s = addAttribute(s_hardening);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_criticalCompression = nAttr.create(s_criticalCompressionName[0], s_criticalCompressionName[1], MFnNumericData::kFloat, 2.5e-2, &s);
nAttr.setMin(0);
nAttr.setMax(10);
nAttr.setSoftMin(0.001);
nAttr.setSoftMax(0.1);
s = addAttribute(s_criticalCompression);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_criticalStretch = nAttr.create(s_criticalStretchName[0], s_criticalStretchName[1], MFnNumericData::kFloat, 7.5e-3, &s);
nAttr.setMin(0);
nAttr.setMax(10);
nAttr.setSoftMin(0.001);
nAttr.setSoftMax(0.01);
s = addAttribute(s_criticalStretch);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_friction = nAttr.create(s_frictionName[0], s_frictionName[1], MFnNumericData::kFloat, 1.f, &s);
nAttr.setMin(0);
nAttr.setMax(1e5);
nAttr.setSoftMin(0.1);
nAttr.setSoftMax(5.0);
s = addAttribute(s_friction);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_flip = nAttr.create(s_flipName[0], s_flipName[1], MFnNumericData::kFloat, 0.95, &s);
nAttr.setMin(0);
nAttr.setMax(10);
nAttr.setSoftMin(0.1);
nAttr.setSoftMax(1.5);
s = addAttribute(s_flip);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_gravity = nAttr.create(s_gravityName[0], s_gravityName[1], MFnNumericData::k3Float, 0, &s);
nAttr.setMin(-1e6);
nAttr.setMax(1e6);
s = addAttribute(s_gravity);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_deltaT = nAttr.create(s_deltaTName[0], s_deltaTName[1], MFnNumericData::kFloat, 1.0/24.f, &s);
nAttr.setMin(1e-3);
nAttr.setMax(10);
nAttr.setSoftMin(0.01);
nAttr.setSoftMax(0.1);
s = addAttribute(s_deltaT);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_nSubStep = nAttr.create(s_nSubStepName[0], s_nSubStepName[1], MFnNumericData::kInt, 5, &s);
nAttr.setMin(1);
nAttr.setMax(1e4);
nAttr.setSoftMin(1);
nAttr.setSoftMax(15);
s = addAttribute(s_nSubStep);
CHECK_MSTATUS_AND_RETURN_IT(s);
}
// init param
{
s_initParticle = tAttr.create(s_initParticleName[0], s_initParticleName[1], MFnData::kPlugin, &s);
tAttr.setReadable(false);
tAttr.setArray(true);
tAttr.setUsesArrayDataBuilder(true);
tAttr.setAffectsAppearance(true);
s = addAttribute(s_initParticle);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_initType = eAttr.create(s_initTypeName[0], s_initTypeName[1]);
eAttr.addField("Init from OpenVDB", INIT_FROM_VDB);
eAttr.addField("Init a Sphere", INIT_SPHERE);
eAttr.addField("Init two Spheres", INIT_TWO_SPHERES);
eAttr.addField("Init Empty", INIT_EMPTY);
eAttr.setDefault(INIT_EMPTY);
eAttr.setHidden(false);
eAttr.setReadable(true);
eAttr.setWritable(true);
eAttr.setStorable(true);
s= addAttribute(s_initType);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_initTrans0 = mAttr.create(s_initTrans0Name[0], s_initTrans0Name[1]);
mAttr.setHidden(false);
mAttr.setReadable(true);
mAttr.setWritable(true);
mAttr.setKeyable(true);
mAttr.setArray(true);
mAttr.setStorable(true);
mAttr.setUsesArrayDataBuilder(true);
s = addAttribute(s_initTrans0);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_initTrans1 = mAttr.create(s_initTrans1Name[0], s_initTrans1Name[1]);
mAttr.setHidden(false);
mAttr.setReadable(true);
mAttr.setWritable(true);
mAttr.setKeyable(true);
mAttr.setArray(true);
mAttr.setStorable(true);
mAttr.setUsesArrayDataBuilder(true);
s = addAttribute(s_initTrans1);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_initDeltaTime = nAttr.create(s_initDeltaTimeName[0], s_initDeltaTimeName[1], MFnNumericData::kFloat, 1.f/24.f, &s);
nAttr.setMin(1e-3);
nAttr.setMax(10);
nAttr.setSoftMin(0.01);
nAttr.setSoftMax(0.1);
s = addAttribute(s_initDeltaTime);
CHECK_MSTATUS_AND_RETURN_IT(s);
}
// particle baking
{
s_numSampledParticle = nAttr.create(s_numSampledParticleName[0], s_numSampledParticleName[1], MFnNumericData::kInt, 20, &s);
nAttr.setHidden(false);
nAttr.setWritable(false);
nAttr.setKeyable(false);
nAttr.setAffectsAppearance(true);
s = addAttribute(s_numSampledParticle);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_particleStr = tAttr.create(s_particleStrName[0], s_particleStrName[1], MFnData::kString, &s);
tAttr.setHidden(false);
tAttr.setStorable(true);
s = addAttribute(s_particleStr);
s_inputParticle = tAttr.create(s_inputParticleName[0], s_inputParticleName[1], MFnData::kNObject, &s);
tAttr.setReadable(false);
tAttr.setHidden(false);
tAttr.setAffectsAppearance(true);
s = addAttribute(s_inputParticle);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_outputParticle= tAttr.create(s_outputParticleName[0], s_outputParticleName[1], MFnData::kNObject, &s);
tAttr.setWritable(false);
tAttr.setHidden(false);
tAttr.setAffectsAppearance(true);
s = addAttribute(s_outputParticle);
attributeAffects(s_time, s_outputParticle);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_sampleRate = nAttr.create(s_sampleRateName[0], s_sampleRateName[1], MFnNumericData::kInt, 20, &s);
nAttr.setMin(1);
nAttr.setMax(1000000);
nAttr.setSoftMin(1);
nAttr.setSoftMax(100);
nAttr.setHidden(false);
nAttr.setAffectsAppearance(true);
s = addAttribute(s_sampleRate);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_outputVDB = tAttr.create(s_outputVDBName[0], s_outputVDBName[1], MFnData::kPlugin, &s);
tAttr.setWritable(false);
tAttr.setAffectsAppearance(true);
s = addAttribute(s_outputVDB);
attributeAffects(s_time, s_outputVDB);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_vdbVoxelSize = nAttr.create(s_vdbVoxelSizeName[0], s_vdbVoxelSizeName[1], MFnNumericData::kFloat, 0.3, &s);
nAttr.setMin(0.001);
nAttr.setMax(1000000);
nAttr.setSoftMin(0.1);
nAttr.setSoftMax(0.6);
nAttr.setHidden(false);
nAttr.setAffectsAppearance(true);
s = addAttribute(s_vdbVoxelSize);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_vdbHalfWidth = nAttr.create(s_vdbHalfWidthName[0], s_vdbHalfWidthName[1], MFnNumericData::kFloat, 1.0, &s);
nAttr.setMin(0.05);
nAttr.setMax(100);
nAttr.setSoftMin(0.1);
nAttr.setSoftMax(10);
nAttr.setHidden(false);
nAttr.setAffectsAppearance(true);
s = addAttribute(s_vdbHalfWidth);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_vdbVolumeFactor = nAttr.create(s_vdbVolumeFactorName[0], s_vdbVolumeFactorName[1], MFnNumericData::kFloat, 5.0, &s);
nAttr.setMin(0.05);
nAttr.setMax(100);
nAttr.setSoftMin(0.1);
nAttr.setSoftMax(10);
nAttr.setHidden(false);
nAttr.setAffectsAppearance(true);
s = addAttribute(s_vdbVolumeFactor);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_vdbVelocityFactor = nAttr.create(s_vdbVelocityFactorName[0], s_vdbVelocityFactorName[1], MFnNumericData::kFloat, 1.0, &s);
nAttr.setMin(-100);
nAttr.setMax(100);
nAttr.setSoftMin(0.0);
nAttr.setSoftMax(10);
nAttr.setHidden(false);
nAttr.setAffectsAppearance(true);
s = addAttribute(s_vdbVelocityFactor);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_vdbVelocitySampleDistance = nAttr.create(s_vdbVelocitySampleDistanceName[0], s_vdbVelocitySampleDistanceName[1], MFnNumericData::kFloat, 1.0, &s);
nAttr.setMin(0.05);
nAttr.setMax(100);
nAttr.setSoftMin(0.1);
nAttr.setSoftMax(10);
nAttr.setHidden(false);
nAttr.setAffectsAppearance(true);
s = addAttribute(s_vdbVelocitySampleDistance);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_vdbType = eAttr.create(s_vdbTypeName[0], s_vdbTypeName[1]);
eAttr.addField("Sphere", RASTERIZE_SPHERE);
eAttr.addField("Trail", RASTERIZE_TRAIL);
eAttr.setHidden(false);
eAttr.setReadable(true);
eAttr.setWritable(true);
eAttr.setStorable(true);
s= addAttribute(s_vdbType);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_vdbRmin = nAttr.create(s_vdbRminName[0], s_vdbRminName[1], MFnNumericData::kFloat, 0.1, &s);
nAttr.setMin(0.01);
nAttr.setMax(100);
nAttr.setSoftMin(0.1);
nAttr.setSoftMax(1);
nAttr.setHidden(false);
nAttr.setAffectsAppearance(true);
s = addAttribute(s_vdbRmin);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_vdbRmax = nAttr.create(s_vdbRmaxName[0], s_vdbRmaxName[1], MFnNumericData::kFloat, 1.0, &s);
nAttr.setMin(0.01);
nAttr.setMax(100);
nAttr.setSoftMin(0.1);
nAttr.setSoftMax(1);
nAttr.setHidden(false);
nAttr.setAffectsAppearance(true);
s = addAttribute(s_vdbRmax);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_immediateUpdate = nAttr.create(s_immediateUpdateName[0], s_immediateUpdateName[1], MFnNumericData::kBoolean, false, &s);
nAttr.setHidden(false);
nAttr.setAffectsAppearance(true);
s = addAttribute(s_immediateUpdate);
CHECK_MSTATUS_AND_RETURN_IT(s);
attributeAffects(s_inputParticle, s_outputParticle);
attributeAffects(s_sampleRate, s_outputParticle);
attributeAffects(s_sampleRate, s_numSampledParticle);
attributeAffects(s_vdbVoxelSize, s_outputVDB);
attributeAffects(s_vdbHalfWidth, s_outputVDB);
attributeAffects(s_vdbVolumeFactor, s_outputVDB);
attributeAffects(s_vdbVelocitySampleDistance, s_outputVDB);
attributeAffects(s_vdbVelocityFactor, s_outputVDB);
attributeAffects(s_vdbType, s_outputVDB);
attributeAffects(s_immediateUpdate, s_outputVDB);
attributeAffects(s_vdbRmin, s_outputVDB);
attributeAffects(s_vdbRmax, s_outputVDB);
}
// loading and saving
{
s_saveEveryFrame = nAttr.create(s_saveEveryFrameName[0], s_saveEveryFrameName[1], MFnNumericData::kBoolean, false, &s);
nAttr.setHidden(false);
s = addAttribute(s_saveEveryFrame);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_saveFilePath = tAttr.create(s_saveFilePathName[0], s_saveFilePathName[1], MFnData::kString);
tAttr.setKeyable(true);
tAttr.setStorable(true);
tAttr.setHidden(false);
tAttr.setWritable(true);
s = addAttribute(s_saveFilePath);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_saveFilePrefix = tAttr.create(s_saveFilePrefixName[0], s_saveFilePrefixName[1], MFnData::kString);
tAttr.setKeyable(true);
tAttr.setStorable(true);
tAttr.setHidden(false);
tAttr.setWritable(true);
s = addAttribute(s_saveFilePrefix);
CHECK_MSTATUS_AND_RETURN_IT(s);
}
// collider
{
s_colliderVdb = tAttr.create(s_colliderVdbName[0], s_colliderVdbName[1], MFnData::kPlugin, &s);
tAttr.setReadable(false);
tAttr.setCached(false);
tAttr.setArray(true);
tAttr.setUsesArrayDataBuilder(true);
tAttr.setAffectsAppearance(true);
s = addAttribute(s_colliderVdb);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_colliderTrans = mAttr.create(s_colliderTransName[0], s_colliderTransName[1]);
mAttr.setHidden(false);
mAttr.setReadable(true);
mAttr.setWritable(true);
mAttr.setKeyable(true);
mAttr.setCached(false);
mAttr.setArray(true);
mAttr.setStorable(true);
mAttr.setUsesArrayDataBuilder(true);
s = addAttribute(s_colliderTrans);
CHECK_MSTATUS_AND_RETURN_IT(s);
}
// display
{
s_displayType = eAttr.create(s_displayTypeName[0], s_displayTypeName[1]);
eAttr.addField("This Frame", DISP_THIS_FRAME);
eAttr.addField("Last Frame", DISP_LAST_FRAME);
eAttr.setDefault(DISP_THIS_FRAME);
eAttr.setHidden(false);
eAttr.setReadable(true);
eAttr.setWritable(true);
eAttr.setStorable(true);
eAttr.setAffectsAppearance(true);
s= addAttribute(s_displayType);
CHECK_MSTATUS_AND_RETURN_IT(s);
s_displaySdf = nAttr.create(s_displaySdfName[0], s_displaySdfName[1], MFnNumericData::kBoolean, false, &s);
nAttr.setHidden(false);