bool AlembicCurves::Save(double time, bool bLastFrame)
{
ESS_PROFILE_FUNC();
//TimeValue ticks = GET_MAX_INTERFACE()->GetTime();
TimeValue ticks = GetTimeValueFromFrame(time);
Object *obj = mMaxNode->EvalWorldState(ticks).obj;
if(mNumSamples == 0){
bForever = CheckIfObjIsValidForever(obj, ticks);
}
else{
bool bNewForever = CheckIfObjIsValidForever(obj, ticks);
if(bForever && bNewForever != bForever){
ESS_LOG_INFO( "bForever has changed" );
}
}
SaveMetaData(mMaxNode, this);
// check if the spline is animated
if(mNumSamples > 0)
{
if(bForever)
{
return true;
}
}
AbcG::OCurvesSchema::Sample curvesSample;
std::vector<AbcA::int32_t> nbVertices;
std::vector<Point3> vertices;
std::vector<float> knotVector;
std::vector<Abc::uint16_t> orders;
if(obj->ClassID() == EDITABLE_SURF_CLASS_ID){
NURBSSet nurbsSet;
BOOL success = GetNURBSSet(obj, ticks, nurbsSet, TRUE);
AbcG::CurvePeriodicity cPeriod = AbcG::kNonPeriodic;
AbcG::CurveType cType = AbcG::kCubic;
AbcG::BasisType cBasis = AbcG::kNoBasis;
int n = nurbsSet.GetNumObjects();
for(int i=0; i<n; i++){
NURBSObject* pObject = nurbsSet.GetNURBSObject((int)i);
//NURBSType type = pObject->GetType();
if(!pObject){
continue;
}
if( pObject->GetKind() == kNURBSCurve ){
NURBSCurve* pNurbsCurve = (NURBSCurve*)pObject;
int degree;
int numCVs;
NURBSCVTab cvs;
int numKnots;
NURBSKnotTab knots;
pNurbsCurve->GetNURBSData(ticks, degree, numCVs, cvs, numKnots, knots);
orders.push_back(degree+1);
const int cvsCount = cvs.Count();
const int knotCount = knots.Count();
for(int j=0; j<cvs.Count(); j++){
NURBSControlVertex cv = cvs[j];
double x, y, z;
cv.GetPosition(ticks, x, y, z);
vertices.push_back( Point3((float)x, (float)y, (float)z) );
}
nbVertices.push_back(cvsCount);
//skip the first and last entry because Maya and XSI use this format
for(int j=1; j<knots.Count()-1; j++){
knotVector.push_back((float)knots[j]);
}
if(i == 0){
if(pNurbsCurve->IsClosed()){
cPeriod = AbcG::kPeriodic;
}
}
else{
if(pNurbsCurve->IsClosed()){
if(cPeriod != AbcG::kPeriodic){
ESS_LOG_WARNING("Mixed curve wrap types not supported.");
}
}
else{
if(cPeriod != AbcG::kNonPeriodic){
ESS_LOG_WARNING("Mixed curve wrap types not supported.");
}
}
}
}
}
curvesSample.setType(cType);
curvesSample.setWrap(cPeriod);
curvesSample.setBasis(cBasis);
}
else
{
BezierShape beziershape;
PolyShape polyShape;
bool bBezier = false;
// Get a pointer to the spline shpae
ShapeObject *pShapeObject = NULL;
if (obj->IsShapeObject())
{
pShapeObject = reinterpret_cast<ShapeObject *>(obj);
}
else
{
return false;
}
// Determine if we are a bezier shape
if (pShapeObject->CanMakeBezier())
{
pShapeObject->MakeBezier(ticks, beziershape);
bBezier = true;
}
else
{
pShapeObject->MakePolyShape(ticks, polyShape);
bBezier = false;
}
// Get the control points
//std::vector<Point3> inTangents;
//std::vector<Point3> outTangents;
if (bBezier)
{
int oldVerticesCount = (int)vertices.size();
for (int i = 0; i < beziershape.SplineCount(); i += 1)
{
Spline3D *pSpline = beziershape.GetSpline(i);
int knots = pSpline->KnotCount();
for(int ix = 0; ix < knots; ++ix)
{
Point3 in = pSpline->GetInVec(ix);
Point3 p = pSpline->GetKnotPoint(ix);
Point3 out = pSpline->GetOutVec(ix);
vertices.push_back( p );
//inTangents.push_back( in );
//outTangents.push_back( out );
}
int nNumVerticesAdded = (int)vertices.size() - oldVerticesCount;
nbVertices.push_back( nNumVerticesAdded );
oldVerticesCount = (int)vertices.size();
}
}
else
{
for (int i = 0; i < polyShape.numLines; i += 1)
{
PolyLine &refLine = polyShape.lines[i];
nbVertices.push_back(refLine.numPts);
for (int j = 0; j < refLine.numPts; j += 1)
{
Point3 p = refLine.pts[j].p;
vertices.push_back(p);
}
}
}
// set the type + wrapping
curvesSample.setType(bBezier ? AbcG::kCubic : AbcG::kLinear);
curvesSample.setWrap(pShapeObject->CurveClosed(ticks, 0) ? AbcG::kPeriodic : AbcG::kNonPeriodic);
curvesSample.setBasis(AbcG::kNoBasis);
}
if(nbVertices.size() == 0 || vertices.size() == 0){
ESS_LOG_WARNING("No curve data to export.");
return false;
}
const int vertCount = (int)vertices.size();
// prepare the bounding box
Abc::Box3d bbox;
// allocate the points and normals
std::vector<Abc::V3f> posVec(vertCount);
Matrix3 wm = mMaxNode->GetObjTMAfterWSM(ticks);
for(int i=0;i<vertCount;i++)
{
posVec[i] = ConvertMaxPointToAlembicPoint(vertices[i] );
bbox.extendBy(posVec[i]);
// Set the archive bounding box
if (mJob)
{
Point3 worldMaxPoint = wm * vertices[i];
Abc::V3f alembicWorldPoint = ConvertMaxPointToAlembicPoint(worldMaxPoint);
mJob->GetArchiveBBox().extendBy(alembicWorldPoint);
}
}
if(knotVector.size() > 0 && orders.size() > 0){
if(!mKnotVectorProperty.valid()){
mKnotVectorProperty = Abc::OFloatArrayProperty(mCurvesSchema.getArbGeomParams(), ".knot_vector", mCurvesSchema.getMetaData(), mJob->GetAnimatedTs() );
}
mKnotVectorProperty.set(Abc::FloatArraySample(knotVector));
if(!mOrdersProperty.valid()){
mOrdersProperty = Abc::OUInt16ArrayProperty(mCurvesSchema.getArbGeomParams(), ".orders", mCurvesSchema.getMetaData(), mJob->GetAnimatedTs() );
}
mOrdersProperty.set(Abc::UInt16ArraySample(orders));
}
// store the bbox
curvesSample.setSelfBounds(bbox);
mCurvesSchema.getChildBoundsProperty().set(bbox);
Abc::Int32ArraySample nbVerticesSample(&nbVertices.front(),nbVertices.size());
curvesSample.setCurvesNumVertices(nbVerticesSample);
// allocate for the points and normals
Abc::P3fArraySample posSample(&posVec.front(),posVec.size());
curvesSample.setPositions(posSample);
mCurvesSchema.set(curvesSample);
mNumSamples++;
return true;
}
bool AlembicPoints::Save(double time, bool bLastFrame)
{
ESS_PROFILE_FUNC();
// Note: Particles are always considered to be animated even though
// the node does not have the IsAnimated() flag.
// Extract our particle emitter at the given time
TimeValue ticks = GetTimeValueFromFrame(time);
Object *obj = mMaxNode->EvalWorldState(ticks).obj;
SaveMetaData(mMaxNode, this);
SimpleParticle* pSimpleParticle = (SimpleParticle*)obj->GetInterface(I_SIMPLEPARTICLEOBJ);
IPFSystem* ipfSystem = GetPFSystemInterface(obj);
IParticleObjectExt* particlesExt = GetParticleObjectExtInterface(obj);
#ifdef THINKING_PARTICLES
ParticleMat* pThinkingParticleMat = NULL;
TP_MasterSystemInterface* pTPMasterSystemInt = NULL;
if(obj->CanConvertToType(MATTERWAVES_CLASS_ID))
{
pThinkingParticleMat = reinterpret_cast<ParticleMat*>(obj->ConvertToType(ticks, MATTERWAVES_CLASS_ID));
pTPMasterSystemInt = reinterpret_cast<TP_MasterSystemInterface*>(obj->GetInterface(IID_TP_MASTERSYSTEM));
}
#endif
const bool bAutomaticInstancing = GetCurrentJob()->GetOption("automaticInstancing");
if(
#ifdef THINKING_PARTICLES
!pThinkingParticleMat &&
#endif
!particlesExt && !pSimpleParticle){
return false;
}
//We have to put the particle system into the renders state so that PFOperatorMaterialFrequency::Proceed will set the materialID channel
//Note: settting the render state to true breaks the shape node instancing export
bool bRenderStateForced = false;
if(bAutomaticInstancing && ipfSystem && !ipfSystem->IsRenderState()){
ipfSystem->SetRenderState(true);
bRenderStateForced = true;
}
int numParticles = 0;
#ifdef THINKING_PARTICLES
if(pThinkingParticleMat){
numParticles = pThinkingParticleMat->NumParticles();
}
else
#endif
if(particlesExt){
particlesExt->UpdateParticles(mMaxNode, ticks);
numParticles = particlesExt->NumParticles();
}
else if(pSimpleParticle){
pSimpleParticle->Update(ticks, mMaxNode);
numParticles = pSimpleParticle->parts.points.Count();
}
// Store positions, velocity, width/size, scale, id, bounding box
std::vector<Abc::V3f> positionVec;
std::vector<Abc::V3f> velocityVec;
std::vector<Abc::V3f> scaleVec;
std::vector<float> widthVec;
std::vector<float> ageVec;
std::vector<float> massVec;
std::vector<float> shapeTimeVec;
std::vector<Abc::uint64_t> idVec;
std::vector<Abc::uint16_t> shapeTypeVec;
std::vector<Abc::uint16_t> shapeInstanceIDVec;
std::vector<Abc::Quatf> orientationVec;
std::vector<Abc::Quatf> angularVelocityVec;
std::vector<Abc::C4f> colorVec;
positionVec.reserve(numParticles);
velocityVec.reserve(numParticles);
scaleVec.reserve(numParticles);
widthVec.reserve(numParticles);
ageVec.reserve(numParticles);
massVec.reserve(numParticles);
shapeTimeVec.reserve(numParticles);
idVec.reserve(numParticles);
shapeTypeVec.reserve(numParticles);
shapeInstanceIDVec.reserve(numParticles);
orientationVec.reserve(numParticles);
angularVelocityVec.reserve(numParticles);
colorVec.reserve(numParticles);
//std::vector<std::string> instanceNamesVec;
Abc::Box3d bbox;
bool constantPos = true;
bool constantVel = true;
bool constantScale = true;
bool constantWidth = true;
bool constantAge = true;
bool constantOrientation = true;
bool constantAngularVel = true;
bool constantColor = true;
if(bAutomaticInstancing){
SetMaxSceneTime(ticks);
}
//The MAX interfaces return everything in world coordinates,
//so we need to multiply the inverse the node world transform matrix
Matrix3 nodeWorldTM = mMaxNode->GetObjTMAfterWSM(ticks);
// Convert the max transform to alembic
Matrix3 alembicMatrix;
ConvertMaxMatrixToAlembicMatrix(nodeWorldTM, alembicMatrix);
Abc::M44d nodeWorldTrans( alembicMatrix.GetRow(0).x, alembicMatrix.GetRow(0).y, alembicMatrix.GetRow(0).z, 0,
alembicMatrix.GetRow(1).x, alembicMatrix.GetRow(1).y, alembicMatrix.GetRow(1).z, 0,
alembicMatrix.GetRow(2).x, alembicMatrix.GetRow(2).y, alembicMatrix.GetRow(2).z, 0,
alembicMatrix.GetRow(3).x, alembicMatrix.GetRow(3).y, alembicMatrix.GetRow(3).z, 1);
Abc::M44d nodeWorldTransInv = nodeWorldTrans.inverse();
//ESS_LOG_WARNING("tick: "<<ticks<<" numParticles: "<<numParticles<<"\n");
ExoNullView nullView;
particleGroupInterface groupInterface(particlesExt, obj, mMaxNode, &nullView);
{
ESS_PROFILE_SCOPE("AlembicPoints::SAVE - numParticlesLoop");
for (int i = 0; i < numParticles; ++i)
{
Abc::V3f pos(0.0);
Abc::V3f vel(0.0);
Abc::V3f scale(1.0);
Abc::C4f color(0.5, 0.5, 0.5, 1.0);
float age = 0;
Abc::uint64_t id = 0;
Abc::Quatd orientation(0.0, 0.0, 1.0, 0.0);
Abc::Quatd spin(0.0, 0.0, 1.0, 0.0);
// Particle size is a uniform scale multiplier in XSI. In Max, I need to learn where to get this
// For now, we'll just default to 1
float width = 1.0f;
ShapeType shapetype = ShapeType_Point;
float shapeInstanceTime = (float)time;
Abc::uint16_t shapeInstanceId = 0;
#ifdef THINKING_PARTICLES
if(pThinkingParticleMat){
if(pTPMasterSystemInt->IsAlive(i) == FALSE){
continue;
}
//TimeValue ageValue = particlesExt->GetParticleAgeByIndex(i);
TimeValue ageValue = pTPMasterSystemInt->Age(i);
if(ageValue == -1){
continue;
}
ESS_PROFILE_SCOPE("AlembicPoints::SAVE - numParticlesLoop - ThinkingParticles");
age = (float)GetSecondsFromTimeValue(ageValue);
//pos = ConvertMaxPointToAlembicPoint(*particlesExt->GetParticlePositionByIndex(i));
pos = ConvertMaxPointToAlembicPoint(pTPMasterSystemInt->Position(i));
//vel = ConvertMaxVectorToAlembicVector(*particlesExt->GetParticleSpeedByIndex(i) * TIME_TICKSPERSEC);
vel = ConvertMaxVectorToAlembicVector(pTPMasterSystemInt->Velocity(i) * TIME_TICKSPERSEC);
scale = ConvertMaxScaleToAlembicScale(pTPMasterSystemInt->Scale(i));
scale *= pTPMasterSystemInt->Size(i);
//ConvertMaxEulerXYZToAlembicQuat(*particlesExt->GetParticleOrientationByIndex(i), orientation);
Matrix3 alignmentMatMax = pTPMasterSystemInt->Alignment(i);
Abc::M44d alignmentMat;
ConvertMaxMatrixToAlembicMatrix(alignmentMatMax, alignmentMat);
/*alignmentMat = Abc::M44d( alignmentMatMax.GetRow(0).x, alignmentMatMax.GetRow(0).y, alignmentMatMax.GetRow(0).z, 0,
alignmentMatMax.GetRow(1).x, alignmentMatMax.GetRow(1).y, alignmentMatMax.GetRow(1).z, 0,
alignmentMatMax.GetRow(2).x, alignmentMatMax.GetRow(2).y, alignmentMatMax.GetRow(2).z, 0,
alignmentMatMax.GetRow(3).x, alignmentMatMax.GetRow(3).y, alignmentMatMax.GetRow(3).z, 1);*/
//orientation = ConvertMaxQuatToAlembicQuat(extracctuat(alignmentMat), true);
alignmentMat = alignmentMat * nodeWorldTransInv;
orientation = extractQuat(alignmentMat);
//ConvertMaxAngAxisToAlembicQuat(*particlesExt->GetParticleSpinByIndex(i), spin);
ConvertMaxAngAxisToAlembicQuat(pTPMasterSystemInt->Spin(i), spin);
id = particlesExt->GetParticleBornIndex(i);
//seems to always return 0
//int nPid = pThinkingParticleMat->ParticleID(i);
int nMatId = -1;
Matrix3 meshTM;
meshTM.IdentityMatrix();
BOOL bNeedDelete = FALSE;
BOOL bChanged = FALSE;
Mesh* pMesh = NULL;
{
ESS_PROFILE_SCOPE("AlembicPoints::SAVE - numParticlesLoop - ThinkingParticles - GetParticleRenderMesh");
pMesh = pThinkingParticleMat->GetParticleRenderMesh(ticks, mMaxNode, nullView, bNeedDelete, i, meshTM, bChanged);
}
if(pMesh){
ESS_PROFILE_SCOPE("AlembicPoints::SAVE - numParticlesLoop - ThinkingParticles - CacheShapeMesh");
meshInfo mi = CacheShapeMesh(pMesh, bNeedDelete, meshTM, nMatId, i, ticks, shapetype, shapeInstanceId, shapeInstanceTime);
Abc::V3d min = pos + mi.bbox.min;
Abc::V3d max = pos + mi.bbox.max;
bbox.extendBy(min);
bbox.extendBy(max);
}
else{
shapetype = ShapeType_Point;
}
}
else
#endif
if(particlesExt && ipfSystem){
TimeValue ageValue = particlesExt->GetParticleAgeByIndex(i);
if(ageValue == -1){
continue;
}
age = (float)GetSecondsFromTimeValue(ageValue);
pos = ConvertMaxPointToAlembicPoint(*particlesExt->GetParticlePositionByIndex(i));
vel = ConvertMaxVectorToAlembicVector(*particlesExt->GetParticleSpeedByIndex(i) * TIME_TICKSPERSEC);
scale = ConvertMaxScaleToAlembicScale(*particlesExt->GetParticleScaleXYZByIndex(i));
ConvertMaxEulerXYZToAlembicQuat(*particlesExt->GetParticleOrientationByIndex(i), orientation);
ConvertMaxAngAxisToAlembicQuat(*particlesExt->GetParticleSpinByIndex(i), spin);
//age = (float)GetSecondsFromTimeValue(particlesExt->GetParticleAgeByIndex(i));
id = particlesExt->GetParticleBornIndex(i);
if(bAutomaticInstancing){
int nMatId = -1;
if(ipfSystem){
if( groupInterface.setCurrentParticle(ticks, i) ){
nMatId = groupInterface.getCurrentMtlId();
}
else{
ESS_LOG_WARNING("Error: cound retrieve material ID for particle mesh "<<i);
}
}
Matrix3 meshTM;
meshTM.IdentityMatrix();
BOOL bNeedDelete = FALSE;
BOOL bChanged = FALSE;
Mesh* pMesh = pMesh = particlesExt->GetParticleShapeByIndex(i);
if(pMesh){
meshInfo mi = CacheShapeMesh(pMesh, bNeedDelete, meshTM, nMatId, i, ticks, shapetype, shapeInstanceId, shapeInstanceTime);
Abc::V3d min = pos + mi.bbox.min;
Abc::V3d max = pos + mi.bbox.max;
bbox.extendBy(min);
bbox.extendBy(max);
}
else{
shapetype = ShapeType_Point;
}
}
else{
GetShapeType(particlesExt, i, ticks, shapetype, shapeInstanceId, shapeInstanceTime);
}
color = GetColor(particlesExt, i, ticks);
}
else if(pSimpleParticle){
if( ! pSimpleParticle->parts.Alive( i ) ) {
continue;
}
pos = ConvertMaxPointToAlembicPoint(pSimpleParticle->ParticlePosition(ticks, i));
vel = ConvertMaxVectorToAlembicVector(pSimpleParticle->ParticleVelocity(ticks, i));
//simple particles have no scale?
//simple particles have no orientation?
age = (float)GetSecondsFromTimeValue( pSimpleParticle->ParticleAge(ticks, i) );
//simple particles have born index
width = pSimpleParticle->ParticleSize(ticks, i);
Abc::V3d min(pos.x - width/2, pos.y - width/2, pos.z - width/2);
Abc::V3d max(pos.x + width/2, pos.y + width/2, pos.z + width/2);
bbox.extendBy(min);
bbox.extendBy(max);
}
{
ESS_PROFILE_SCOPE("AlembicPoints::SAVE - numParticlesLoop - end loop save");
//move everything from world space to local space
pos = pos * nodeWorldTransInv;
Abc::V4f vel4(vel.x, vel.y, vel.z, 0.0);
vel4 = vel4 * nodeWorldTransInv;
vel.setValue(vel4.x, vel4.y, vel4.z);
//scale = scale * nodeWorldTransInv;
//orientation = Abc::extractQuat(orientation.toMatrix44() * nodeWorldTransInv);
//spin = Abc::extractQuat(spin.toMatrix44() * nodeWorldTransInv);
bbox.extendBy( pos );
positionVec.push_back( pos );
velocityVec.push_back( vel );
scaleVec.push_back( scale );
widthVec.push_back( width );
ageVec.push_back( age );
idVec.push_back( id );
orientationVec.push_back( orientation );
angularVelocityVec.push_back( spin );
shapeTypeVec.push_back( shapetype );
shapeInstanceIDVec.push_back( shapeInstanceId );
shapeTimeVec.push_back( shapeInstanceTime );
colorVec.push_back( color );
constantPos &= (pos == positionVec[0]);
constantVel &= (vel == velocityVec[0]);
constantScale &= (scale == scaleVec[0]);
constantWidth &= (width == widthVec[0]);
constantAge &= (age == ageVec[0]);
constantOrientation &= (orientation == orientationVec[0]);
constantAngularVel &= (spin == angularVelocityVec[0]);
constantColor &= (color == colorVec[0]);
// Set the archive bounding box
// Positions for particles are already cnsider to be in world space
if (mJob)
{
mJob->GetArchiveBBox().extendBy(pos);
}
}
}
}
// if (numParticles > 1)
// {
// ESS_PROFILE_SCOPE("AlembicPoints::Save - vectorResize");
// if (constantPos) { positionVec.resize(1); }
// if (constantVel) { velocityVec.resize(1); }
// if (constantScale) { scaleVec.resize(1); }
// if (constantWidth) { widthVec.resize(1); }
// if (constantAge) { ageVec.resize(1); }
// if (constantOrientation){ orientationVec.resize(1); }
// if (constantAngularVel) { angularVelocityVec.resize(1); }
//if (constantColor) { colorVec.resize(1); }
// }
{
ESS_PROFILE_SCOPE("AlembicPoints::Save - sample writing");
// Store the information into our properties and points schema
Abc::P3fArraySample positionSample( positionVec);
Abc::P3fArraySample velocitySample(velocityVec);
Abc::P3fArraySample scaleSample(scaleVec);
Abc::FloatArraySample widthSample(widthVec);
Abc::FloatArraySample ageSample(ageVec);
Abc::FloatArraySample massSample(massVec);
Abc::FloatArraySample shapeTimeSample(shapeTimeVec);
Abc::UInt64ArraySample idSample(idVec);
Abc::UInt16ArraySample shapeTypeSample(shapeTypeVec);
Abc::UInt16ArraySample shapeInstanceIDSample(shapeInstanceIDVec);
Abc::QuatfArraySample orientationSample(orientationVec);
Abc::QuatfArraySample angularVelocitySample(angularVelocityVec);
Abc::C4fArraySample colorSample(colorVec);
mScaleProperty.set(scaleSample);
mAgeProperty.set(ageSample);
mMassProperty.set(massSample);
mShapeTimeProperty.set(shapeTimeSample);
mShapeTypeProperty.set(shapeTypeSample);
mShapeInstanceIDProperty.set(shapeInstanceIDSample);
mOrientationProperty.set(orientationSample);
mAngularVelocityProperty.set(angularVelocitySample);
mColorProperty.set(colorSample);
mPointsSample.setPositions(positionSample);
mPointsSample.setVelocities(velocitySample);
mPointsSample.setWidths(AbcG::OFloatGeomParam::Sample(widthSample, AbcG::kVertexScope));
mPointsSample.setIds(idSample);
mPointsSample.setSelfBounds(bbox);
mPointsSchema.getChildBoundsProperty().set( bbox);
mPointsSchema.set(mPointsSample);
}
mNumSamples++;
//mInstanceNames.pop_back();
if(bAutomaticInstancing){
saveCurrentFrameMeshes();
}
if(bRenderStateForced){
ipfSystem->SetRenderState(false);
}
if(bLastFrame){
ESS_PROFILE_SCOPE("AlembicParticles::Save - save instance names property");
std::vector<std::string> instanceNames(mNumShapeMeshes);
for(faceVertexHashToShapeMap::iterator it = mShapeMeshCache.begin(); it != mShapeMeshCache.end(); it++){
std::stringstream pathStream;
pathStream << "/" << it->second.name<< "/" << it->second.name <<"Shape";
instanceNames[it->second.nMeshInstanceId] = pathStream.str();
}
//for some reason the .dims property is not written when there is exactly one entry if we don't push an empty string
//having an extra unreferenced entry seems to be harmless
instanceNames.push_back("");
mInstanceNamesProperty.set(Abc::StringArraySample(instanceNames));
}
return true;
}
bool AlembicCamera::Save(double time, bool bLastFrame)
{
TimeValue ticks = GetTimeValueFromFrame(time);
Object *obj = mMaxNode->EvalWorldState(ticks).obj;
if (mNumSamples == 0) {
bForever = CheckIfObjIsValidForever(obj, ticks);
}
else {
bool bNewForever = CheckIfObjIsValidForever(obj, ticks);
if (bForever && bNewForever != bForever) {
ESS_LOG_INFO("bForever has changed");
}
}
bForever = false;
SaveMetaData(mMaxNode, this);
// Set the xform sample
Matrix3 wm = mMaxNode->GetObjTMAfterWSM(ticks);
if (mJob) {
Point3 worldMaxPoint = wm.GetTrans();
Abc::V3f alembicWorldPoint = ConvertMaxPointToAlembicPoint(worldMaxPoint);
mJob->GetArchiveBBox().extendBy(alembicWorldPoint);
}
// check if the camera is animated
if (mNumSamples > 0) {
if (bForever) {
return true;
}
}
// Return a pointer to a Camera given an INode or return false if the node
// cannot be converted to a Camera
CameraObject *cam = NULL;
if (obj->CanConvertToType(Class_ID(SIMPLE_CAM_CLASS_ID, 0))) {
cam = reinterpret_cast<CameraObject *>(
obj->ConvertToType(ticks, Class_ID(SIMPLE_CAM_CLASS_ID, 0)));
}
else if (obj->CanConvertToType(Class_ID(LOOKAT_CAM_CLASS_ID, 0))) {
cam = reinterpret_cast<CameraObject *>(
obj->ConvertToType(ticks, Class_ID(LOOKAT_CAM_CLASS_ID, 0)));
}
else {
return false;
}
CameraState cs;
Interval valid = FOREVER;
cam->EvalCameraState(ticks, valid, &cs);
float tDist = cam->GetTDist(ticks);
float ratio = GetCOREInterface()->GetRendImageAspect();
float aperatureWidth =
GetCOREInterface()->GetRendApertureWidth(); // this may differ from the
// imported value
// unfortunately
float focalLength =
(float)((aperatureWidth / 2.0) /
tan(cs.fov / 2.0)); // alembic wants this one in millimeters
aperatureWidth /= 10.0f; // convert to centimeters
IMultiPassCameraEffect *pCameraEffect = cam->GetIMultiPassCameraEffect();
Interval interval = FOREVER;
BOOL bUseTargetDistance = FALSE;
const int TARGET_DISTANCE = 0;
pCameraEffect->GetParamBlockByID(0)->GetValue(TARGET_DISTANCE, ticks,
bUseTargetDistance, interval);
float fFocalDepth = 0.0f;
const int FOCAL_DEPTH = 1;
pCameraEffect->GetParamBlockByID(0)->GetValue(FOCAL_DEPTH, ticks, fFocalDepth,
interval);
// store the camera data
mCameraSample.setNearClippingPlane(cs.hither);
mCameraSample.setFarClippingPlane(cs.yon);
// mCameraSample.setLensSqueezeRatio(ratio);
// should set to 1.0 according the article "Maya to Softimage: Camera
// Interoperability"
mCameraSample.setLensSqueezeRatio(1.0);
mCameraSample.setFocalLength(focalLength);
mCameraSample.setHorizontalAperture(aperatureWidth);
mCameraSample.setVerticalAperture(aperatureWidth / ratio);
if (bUseTargetDistance) {
mCameraSample.setFocusDistance(tDist);
}
else {
mCameraSample.setFocusDistance(fFocalDepth);
}
// save the samples
mCameraSchema.set(mCameraSample);
mNumSamples++;
// Note that the CamObject should only be deleted if the pointer to it is not
// equal to the object pointer that called ConvertToType()
if (cam != NULL && obj != cam) {
delete cam;
cam = NULL;
return false;
}
return true;
}