UT_Matrix3 RainData::computeRotationMatrix(UT_Vector3 rainDirection)
{
static const UT_Vector3 up(0.0, -1.0, 0.0);
UT_Matrix3 rotDirMatrix(1.0);
rainDirection.normalize();
UT_Vector3 axis = cross (up, rainDirection);
axis.normalize();
fpreal angle = acos (dot (up, rainDirection));
rotDirMatrix.rotate (axis, -angle); // minus for proper generation
// of the noise in
// RainData::computeInitialPositions
return rotDirMatrix;
}
void SOP_FlexSolver::copySourceParticles()
{
if (mySource)
{
for (GA_Offset srcptoff = 0; srcptoff < maxParticles; ++srcptoff)
{
const UT_Vector3 pos = mySource->getPos3(srcptoff);
UT_Vector3 vel;
if (mySourceVel.isValid())
vel = mySourceVel.get(srcptoff);
else
vel = UT_Vector3(0,0,0);
uint index = static_cast<int>(srcptoff);
uint p = index * 4;
uint v = index * 3;
particles[p] = pos.x();
particles[p+1] = pos.y();
particles[p+2] = pos.z();
particles[p+3] = 1.0;
velocities[v] = vel.x();
velocities[v+1] = vel.y();
velocities[v+2] = vel.z();
gdp->insertPointCopy(srcptoff);
gdp->setPos3(srcptoff, pos);
}
}
}
void
SOP_PrimGroupCentroid::baryCenter(const GU_Detail *input_geo,
GA_Range &pr_range,
const GA_PrimitiveList &prim_list,
UT_Vector3 &pos)
{
GA_Range pt_range;
GA_OffsetArray points;
GA_OffsetArray::const_iterator points_it;
// We need to iterate over each primitive in the range and
// find out which points it references.
for (GA_Iterator pr_it(pr_range); !pr_it.atEnd(); ++pr_it)
{
// Get the range of points for the primitive using the
// offset from the primitive list.
pt_range = prim_list.get(*pr_it)->getPointRange();
// Add each point's offset to the array, checking for duplicates.
for (GA_Iterator pt_it(pt_range); !pt_it.atEnd(); ++pt_it)
points.append(*pt_it, true);
}
// Reset the position.
pos.assign(0,0,0);
// Add the positions for all the points.
for (points_it = points.begin(); !points_it.atEnd(); ++points_it)
pos += input_geo->getPos3(*points_it);
// Store the average position for all the points we found.
pos /= points.entries();
}
void
SOP_PrimGroupCentroid::centerOfMass(GA_Range &pr_range,
const GA_PrimitiveList &prim_list,
UT_Vector3 &pos)
{
fpreal area, total_area;
const GEO_Primitive *prim;
// Set the position and total area to 0.
pos.assign(0,0,0);
total_area = 0;
// Iterate over all the primitives in the range.
for (GA_Iterator it(pr_range); !it.atEnd(); ++it)
{
// Get the primitive.
prim = (const GEO_Primitive *) prim_list.get(*it);
// Calculate the area of the primitive.
area = prim->calcArea();
// Add the barycenter multiplied by the area to the position.
pos += prim->baryCenter() * area;
// Add this primitive's area to the total area.
total_area += area;
}
// If the total area is not 0, divide the position by the total area.
if (total_area)
pos /= total_area;
}
void
SOP_FlexSolver::timeStep(fpreal now)
{
UT_Vector3 force(FX(now), FY(now), FZ(now));
// int nbirth = BIRTH(now);
if (error() >= UT_ERROR_ABORT)
return;
for (GA_Offset srcptoff = 0; srcptoff < maxParticles; ++srcptoff)
{
UT_Vector3 vel;
if (mySourceVel.isValid())
vel = mySourceVel.get(srcptoff);
else
vel = UT_Vector3(0,0,0);
vel += force;
uint index = static_cast<int>(srcptoff);
uint v = index * 3;
velocities[v] = vel.x();
velocities[v+1] = vel.y();
velocities[v+2] = vel.z();
}
InitFlexParams(*myParms, now);
flexSetParams(mySolver, myParms);
flexSetVelocities(mySolver, &velocities[0], maxParticles, eFlexMemoryHost);
const float dt = 1.0 / 24.0;
const int substeps = 1;
// tick solver
flexUpdateSolver(mySolver, dt, substeps, myTimer);
// update GPU data asynchronously
flexGetParticles(mySolver, (float*)&particles[0], maxParticles, eFlexMemoryHost);
for (GA_Offset srcptoff = 0; srcptoff < maxParticles; ++srcptoff)
{
uint p = static_cast<int>(srcptoff) * 4;
const UT_Vector3 pos = UT_Vector3(particles[p], particles[p+1], particles[p+2]);
gdp->setPos3(srcptoff, pos);
}
}
OP_ERROR
SOP_Smoke_Source::cookMySop(OP_Context &context)
{
// We must lock our inputs before we try to access their geometry.
// OP_AutoLockInputs will automatically unlock our inputs when we return.
// NOTE: Don't call unlockInputs yourself when using this!
OP_AutoLockInputs inputs(this);
if (inputs.lock(context) >= UT_ERROR_ABORT)
return error();
fpreal now = context.getTime();
duplicateSource(0, context);
// These three lines enable the local variable support. This allows
// $CR to get the red colour, for example, as well as supporting
// any varmap created by the Attribute Create SOP.
// Note that if you override evalVariableValue for your own
// local variables (like SOP_Star does) it is essential you
// still call the SOP_Node::evalVariableValue or you'll not
// get any of the benefit of the built in local variables.
// The variable order controls precedence for which attribute will be
// be bound first if the same named variable shows up in multiple
// places. This ordering ensures point attributes get precedence.
setVariableOrder(3, 2, 0, 1);
// The setCur* functions track which part of the gdp is currently
// being processed - it is what is used in the evalVariableValue
// callback as the current point. The 0 is for the first input,
// you can have two inputs so $CR2 would get the second input's
// value.
setCurGdh(0, myGdpHandle);
// Builds the lookup table matching attributes to the local variables.
setupLocalVars();
// Here we determine which groups we have to work on. We only
// handle point groups.
if (error() < UT_ERROR_ABORT && cookInputGroups(context) < UT_ERROR_ABORT &&
(!myGroup || !myGroup->isEmpty()))
{
UT_AutoInterrupt progress("Flattening Points");
// Handle all position, normal, and vector attributes.
// It's not entirely clear what to do for quaternion or transform attributes.
// We bump the data IDs of the attributes to modify in advance,
// since we're already looping over them, and we want to avoid
// bumping them all for each point, in case that's slow.
UT_Array<GA_RWHandleV3> positionattribs(1);
UT_Array<GA_RWHandleV3> normalattribs;
UT_Array<GA_RWHandleV3> vectorattribs;
GA_Attribute *attrib;
GA_FOR_ALL_POINT_ATTRIBUTES(gdp, attrib)
{
// Skip non-transforming attributes
if (!attrib->needsTransform())
continue;
GA_TypeInfo typeinfo = attrib->getTypeInfo();
if (typeinfo == GA_TYPE_POINT || typeinfo == GA_TYPE_HPOINT)
{
GA_RWHandleV3 handle(attrib);
if (handle.isValid())
{
positionattribs.append(handle);
attrib->bumpDataId();
}
}
else if (typeinfo == GA_TYPE_NORMAL)
{
GA_RWHandleV3 handle(attrib);
if (handle.isValid())
{
normalattribs.append(handle);
attrib->bumpDataId();
}
}
else if (typeinfo == GA_TYPE_VECTOR)
{
GA_RWHandleV3 handle(attrib);
if (handle.isValid())
{
vectorattribs.append(handle);
attrib->bumpDataId();
}
}
}
// Iterate over points up to GA_PAGE_SIZE at a time using blockAdvance.
GA_Offset start;
GA_Offset end;
for (GA_Iterator it(gdp->getPointRange(myGroup)); it.blockAdvance(start, end);)
{
// Check if user requested abort
if (progress.wasInterrupted())
break;
for (GA_Offset ptoff = start; ptoff < end; ++ptoff)
{
// This sets the current point that is beint processed to
// ptoff. This means that ptoff will be used for any
// local variable for any parameter evaluation that occurs
// after this point.
// NOTE: Local variables and repeated parameter evaluation
// is significantly slower and sometimes more complicated
// than having a string parameter that specifies the name
// of an attribute whose values should be used instead.
// That parameter would only need to be evaluated once,
// the attribute could be looked up once, and quickly
// accessed; however, a separate point attribute would
// be needed for each property that varies per point.
// Local variable evaluation isn't threadsafe either,
// whereas attributes can be read safely from multiple
// threads.
//
// Long story short: *Local variables are terrible.*
myCurPtOff[0] = ptoff;
float dist = DIST(now);
UT_Vector3 normal;
if (!DIRPOP())
{
switch (ORIENT())
{
case 0 : // XY Plane
normal.assign(0, 0, 1);
break;
case 1 : // YZ Plane
normal.assign(1, 0, 0);
break;
case 2 : // XZ Plane
normal.assign(0, 1, 0);
break;
}
}
else
{
normal.assign(NX(now), NY(now), NZ(now));
normal.normalize();
}
// Project positions onto the plane by subtracting
// off the normal component.
for (exint i = 0; i < positionattribs.size(); ++i)
{
UT_Vector3 p = positionattribs(i).get(ptoff);
p -= normal * (dot(normal, p) - dist);
positionattribs(i).set(ptoff, p);
}
// Normals will now all either be normal or -normal.
for (exint i = 0; i < normalattribs.size(); ++i)
{
UT_Vector3 n = normalattribs(i).get(ptoff);
if (dot(normal, n) < 0)
n = -normal;
else
n = normal;
normalattribs(i).set(ptoff, n);
}
// Project vectors onto the plane through the origin by
// subtracting off the normal component.
for (exint i = 0; i < vectorattribs.size(); ++i)
{
UT_Vector3 v = vectorattribs(i).get(ptoff);
v -= normal * dot(normal, v);
vectorattribs(i).set(ptoff, v);
}
}
}
}
static void exportParticlesDetail( const GU_Detail* gdp,
const std::string& filePath,
const std::map<std::string,
channel_type>& desiredChannels )
{
prt_ofstream ostream;
static std::map<std::string, std::string> s_reservedChannels;
if( s_reservedChannels.empty() ) {
s_reservedChannels[ gdp->getStdAttributeName( GEO_ATTRIBUTE_NORMAL ) ] = "Normal";
s_reservedChannels[ gdp->getStdAttributeName( GEO_ATTRIBUTE_TEXTURE ) ] = "TextureCoord";
s_reservedChannels[ gdp->getStdAttributeName( GEO_ATTRIBUTE_VELOCITY ) ] = "Velocity";
s_reservedChannels[ gdp->getStdAttributeName( GEO_ATTRIBUTE_DIFFUSE ) ] = "Color";
//s_reservedChannels[ gdp->getStdAttributeName( GEO_ATTRIBUTE_ALPHA ) ] = "Density";
//s_reservedChannels[ gdp->getStdAttributeName( GEO_ATTRIBUTE_MASS ) ] = "Density";
s_reservedChannels[ gdp->getStdAttributeName( GEO_ATTRIBUTE_LIFE ) ] = "";
s_reservedChannels[ gdp->getStdAttributeName( GEO_ATTRIBUTE_ID ) ] = "ID";
s_reservedChannels[ gdp->getStdAttributeName( GEO_ATTRIBUTE_PSCALE ) ] = "Scale";
s_reservedChannels[ "accel" ] = "Acceleration";
}
float posVal[3];
float lifeVal[2];
ostream.bind( "Position", posVal, 3 );
//We handle the life channel in a special manner
GA_ROAttributeRef lifeAttrib = gdp->findPointAttribute( gdp->getStdAttributeName( GEO_ATTRIBUTE_LIFE ) );
if( lifeAttrib.isValid() ){
std::map<std::string,channel_type>::const_iterator it;
it = desiredChannels.find( "Age" );
if( it != desiredChannels.end() && it->second.second == 1 )
ostream.bind( "Age", &lifeVal[0], 1, it->second.first );
else if( desiredChannels.empty() )
ostream.bind( "Age", &lifeVal[0], 1, prtio::data_types::type_float16 );
it = desiredChannels.find( "LifeSpan" );
if( it != desiredChannels.end() && it->second.second == 1 )
ostream.bind( "LifeSpan", &lifeVal[1], 1, it->second.first );
else if( desiredChannels.empty() )
ostream.bind( "LifeSpan", &lifeVal[1], 1, prtio::data_types::type_float16 );
}
//Using a deque to prevent the memory from moving around after adding the bound_attribute to the container.
std::deque< bound_attribute<int> > m_intAttrs;
std::deque< bound_attribute<float> > m_floatAttrs;
std::deque< bound_attribute<float> > m_vectorAttrs;
for ( GA_AttributeDict::iterator it = gdp->getAttributes().getDict(GA_ATTRIB_POINT).begin(GA_SCOPE_PUBLIC); !it.atEnd(); ++it) {
GA_Attribute *node = it.attrib();
std::string channelName = node->getName();
//Translate special names
std::map<std::string,std::string>::const_iterator itResChannel = s_reservedChannels.find( channelName );
if( itResChannel != s_reservedChannels.end() ){
//If its empty, that means we reserve some sort of special handling.
if( itResChannel->second.empty() )
continue;
channelName = itResChannel->second;
}
//Skip channels that aren't on the list.
std::map<std::string,channel_type>::const_iterator itChannel = desiredChannels.find( channelName );
bool channelIsDesired = ( itChannel != desiredChannels.end() );
if( !desiredChannels.empty() && !channelIsDesired )
continue;
prtio::data_types::enum_t type;
//Only add valid channel names
if( detail::is_valid_channel_name( channelName.c_str() ) ) {
//I add the new item to the deque, THEN initialize it since a deque will not move the object around and this allows
//me to allocate the float array and not have to worry about the object getting deleted too early.
switch( node->getStorageClass() ){
case GA_STORECLASS_FLOAT:
if( node->getTupleSize()==3 ){
m_vectorAttrs.push_back( bound_attribute<float>() );
m_vectorAttrs.back().attr = gdp->findPointAttribute(node->getName());
m_vectorAttrs.back().count = node->getTupleSize();
m_vectorAttrs.back().data = new float[m_vectorAttrs.back().count];
type = prtio::data_types::type_float16;
if( channelIsDesired ){
type = itChannel->second.first;
if( itChannel->second.second != m_vectorAttrs.back().count )
continue;
}
ostream.bind( channelName, m_vectorAttrs.back().data, m_vectorAttrs.back().count, type );
} else {
m_floatAttrs.push_back( bound_attribute<float>() );
m_floatAttrs.back().attr = gdp->findPointAttribute( node->getName() );
m_floatAttrs.back().count = node->getTupleSize();
m_floatAttrs.back().data = new float[m_floatAttrs.back().count];
type = prtio::data_types::type_float16;
if( channelIsDesired ){
type = itChannel->second.first;
if( itChannel->second.second != m_floatAttrs.back().count )
continue;
}
ostream.bind( channelName, m_floatAttrs.back().data, m_floatAttrs.back().count, type );
}
break;
case GA_STORECLASS_INT:
m_intAttrs.push_back( bound_attribute<int>() );
m_intAttrs.back().attr = gdp->findPointAttribute( node->getName() );
m_intAttrs.back().count = node->getTupleSize();
m_intAttrs.back().data = new int[m_intAttrs.back().count];
type = prtio::data_types::type_int32;
if( channelIsDesired ){
type = itChannel->second.first;
if( itChannel->second.second != m_intAttrs.back().count )
continue;
}
ostream.bind( channelName, m_intAttrs.back().data, m_intAttrs.back().count, type );
break;
default:
break;
}
}
}
try{
ostream.open( filePath );
} catch( const std::ios::failure& e ) {
std::cerr << e.what() << std::endl;
throw HOM_OperationFailed( "Failed to open the file" );
}
GA_IndexMap map = gdp->getPointMap();
UT_Vector3 p;
GEO_Point* pt;
GA_Index indexSize = map.indexSize();
GA_Offset offset;
for( int i = 0 ; i < indexSize; i++ ) {
offset = map.offsetFromIndex( i );
p = gdp->getPos3( offset );
posVal[0] = p.x();
posVal[1] = p.y();
posVal[2] = -1 * p.z();
//TODO: Remove the GEO_Point object that is now deprecated.
pt = ( GEO_Point* )gdp->getGBPoint( offset );
//TODO: Convert this into appropriate time values. Is it seconds or frames or what?!
if( lifeAttrib.isValid() )
pt->get( lifeAttrib, lifeVal, 2 );
for( std::deque< bound_attribute<float> >::iterator it = m_floatAttrs.begin(), itEnd = m_floatAttrs.end(); it != itEnd; ++it )
pt->get( it->attr, it->data, it->count );
for( std::deque< bound_attribute<float> >::iterator it = m_vectorAttrs.begin(), itEnd = m_vectorAttrs.end(); it != itEnd; ++it ) {
pt->get( it->attr, it->data, it->count );
//TODO: Optionally transform into some consistent world space for PRT files.
}
for( std::deque< bound_attribute<int> >::iterator it = m_intAttrs.begin(), itEnd = m_intAttrs.end(); it != itEnd; ++it )
pt->get( it->attr, it->data, it->count );
ostream.write_next_particle();
}
ostream.close();
}
void ParallelShift::operator()(const GA_SplittableRange &r) const
{
fpreal actualSpeed;
fpreal parm1x,parm2x,parm1y,parm2y,parm1z,parm2z, parmInitial;
UT_Vector3 p1x, p2x, p1y, p2y, p1z, p2z, p1, p2, initialPosition, p;
fpreal pathLength, pathPeriod;
fpreal integralPart;
UT_Vector3 boundPoints[2];
UT_Vector3 vAttributeVector;
GA_WOAttributeRef vAttributeRef =
gdp_->addFloatTuple(GA_ATTRIB_POINT, "v", 3);
const GA_AIFTuple* vAttribInterface = vAttributeRef.getAIFTuple();
for(GA_PageIterator pit = r.beginPages(); !pit.atEnd(); ++pit)
{
GA_Offset start, end;
for (GA_Iterator it(pit.begin()); it.blockAdvance(start, end); )
{
for (GA_Offset i = start; i < end; ++i)
{
actualSpeed = pRain_->getActualSpeed(i);
vAttributeVector = pRain_->rainDirection_*actualSpeed;
vAttribInterface->set( vAttributeRef.getAttribute(), i,
vAttributeVector.data(), 3);
initialPosition = pRain_->getInitialPosition(i);
parm1x = (pRain_->maximumBounds_[0] - initialPosition[0]) /
pRain_->rainDirection_[0];
parm2x = (pRain_->minimumBounds_[0] - initialPosition[0]) /
pRain_->rainDirection_[0];
parm1y = (pRain_->maximumBounds_[1] - initialPosition[1]) /
pRain_->rainDirection_[1];
parm2y = (pRain_->minimumBounds_[1] - initialPosition[1]) /
pRain_->rainDirection_[1];
parm1z = (pRain_->maximumBounds_[2] - initialPosition[2]) /
pRain_->rainDirection_[2];
parm2z = (pRain_->minimumBounds_[2] - initialPosition[2]) /
pRain_->rainDirection_[2];
p1x = initialPosition + parm1x*pRain_->rainDirection_;
p2x = initialPosition + parm2x*pRain_->rainDirection_;
p1y = initialPosition + parm1y*pRain_->rainDirection_;
p2y = initialPosition + parm2y*pRain_->rainDirection_;
p1z = initialPosition + parm1z*pRain_->rainDirection_;
p2z = initialPosition + parm2z*pRain_->rainDirection_;
UT_Vector3 endsArray [6] = {p1x, p2x, p1y, p2y, p1z, p2z};
// ########### sort ########################################
UT_Vector3 tmpPoint;
bool inBound;
int endsFound = 0;
int k = 0;
while(k<6 && endsFound <2)
{
inBound = false;
inBound = (endsArray[k][0] >=
pRain_->minimumBounds_[0]) &&
(endsArray[k][1] >=
pRain_->minimumBounds_[1]) &&
(endsArray[k][2] >=
pRain_->minimumBounds_[2]) &&
(endsArray[k][0] <=
pRain_->maximumBounds_[0]) &&
(endsArray[k][1] <=
pRain_->maximumBounds_[1]) &&
(endsArray[k][2] <=
pRain_->maximumBounds_[2]);
if (inBound == true)
{
boundPoints[endsFound] = endsArray[k];
endsFound++;
}
k++;
}
if (boundPoints[0][1]<boundPoints[1][1])
{
tmpPoint = boundPoints[1];
boundPoints[1] = boundPoints[0];
boundPoints[0] = tmpPoint;
}
// E#############end of sort ###############################
pathLength = (boundPoints[0] - boundPoints[1]).length();
pathPeriod = pathLength / actualSpeed;
parmInitial = (initialPosition - boundPoints[0]).length()/
pathLength;
integralPart = parmInitial + pRain_->now_ / pathPeriod;
p = boundPoints[0] +
(integralPart - (int)integralPart) *
(boundPoints[1] - boundPoints[0]);
gdp_->setPos3(i, p);
}
}
}
}
void GR_rmanPtc::renderWire( GU_Detail *gdp,
RE_Render &ren,
const GR_AttribOffset &ptinfo,
const GR_DisplayOption *dopt,
float lod,
const GU_PrimGroupClosure *hidden_geometry
)
{
int i, nprim;
GEO_Primitive *prim;
UT_Vector3 v3;
rmanPtcSop::rmanPtcDetail *detail = dynamic_cast<rmanPtcSop::rmanPtcDetail*>(gdp);
if ( !detail )
return;
// rebuild our display list
if ( detail->redraw )
{
srand(0);
GEO_PointList &points = detail->points();
int display_channel = detail->display_channel;
// render as points
GEO_Point *pt = 0;
UT_Vector4 pos;
float col[3] = {1.0,1.0,1.0};
if ( !detail->use_disk )
{
ren.pushPointSize(detail->point_size);
ren.beginPoint();
}
for ( unsigned int i=0; i<points.entries(); ++i )
{
if ( rand()/(float)RAND_MAX<=detail->display_probability )
{
// point position
pt = points[i];
pos = pt->getPos();
// display colour
float *ptr = NULL;
if (detail->attributes.size() >0) {
ptr = pt->castAttribData<float>(
detail->attributes[display_channel] );
if (ptr) {
if ( detail->attribute_size[display_channel]==1)
col[0] = col[1] = col[2] = ptr[0];
else
{
col[0] = ptr[0];
col[1] = ptr[1];
col[2] = ptr[2];
}
}
}
// draw point
if ( !detail->use_cull_bbox ||
detail->cull_bbox.isInside( pos ) )
{
if ( !detail->use_disk )
{
// render as points
ren.setColor( col[0], col[1], col[2], 1 );
ren.vertex3DW( pos.x(), pos.y(), pos.z() );
}
else
{
// render as disks
UT_Vector3 n = *pt->castAttribData<UT_Vector3>(detail->N_attrib);
float r = *pt->castAttribData<float>(detail->R_attrib);
n.normalize();
UT_Vector3 ref(1,0,0);
UT_Vector3 up = ref;
up.cross(n);
up.normalize();
UT_Vector3 right = up;
right.cross(n);
right.normalize();
UT_DMatrix4 mat(
right.x(), right.y(), right.z(), 0,
up.x(), up.y(), up.z(), 0,
n.x(), n.y(), n.z(), 0,
pos.x(), pos.y(), pos.z(), 1 );
ren.pushMatrix();
ren.multiplyMatrix(mat);
ren.pushColor( UT_Color( UT_RGB, col[0], col[1], col[2] ) );
ren.circlefW( 0, 0, detail->point_size * r, 8 );
ren.popColor();
ren.popMatrix();
}
}
}
}
if ( !detail->use_disk )
{
ren.endPoint();
}
}
}