//-*****************************************************************************
void ICurvesDrw::setTime( chrono_t iSeconds )
{
IObjectDrw::setTime( iSeconds );
// Use nearest for now.
ISampleSelector ss( iSeconds, ISampleSelector::kNearIndex );
ICurvesSchema::Sample curvesSample;
if ( m_curves.getSchema().getNumSamples() > 0 )
{ m_curves.getSchema().get( curvesSample, ss ); }
else
{ return; }
m_positions = curvesSample.getPositions();
m_nCurves = curvesSample.getNumCurves();
m_nVertices = curvesSample.getCurvesNumVertices();
m_bounds.makeEmpty();
m_bounds.extendBy( curvesSample.getSelfBounds() );
}
//-*****************************************************************************
void ProcessCurves( ICurves &curves, ProcArgs &args )
{
ICurvesSchema &cs = curves.getSchema();
TimeSamplingPtr ts = cs.getTimeSampling();
SampleTimeSet sampleTimes;
GetRelevantSampleTimes( args, ts, cs.getNumSamples(), sampleTimes );
bool multiSample = sampleTimes.size() > 1;
bool firstSample = true;
for ( SampleTimeSet::iterator iter = sampleTimes.begin();
iter != sampleTimes.end(); ++iter )
{
ISampleSelector sampleSelector( *iter );
ICurvesSchema::Sample sample = cs.getValue( sampleSelector );
//need to set the basis prior to the MotionBegin block
if ( firstSample )
{
firstSample = false;
BasisType basisType = sample.getBasis();
if ( basisType != kNoBasis )
{
RtBasis * basis = NULL;
RtInt step = 0;
switch ( basisType )
{
case kBezierBasis:
basis = &RiBezierBasis;
step = RI_BEZIERSTEP;
break;
case kBsplineBasis:
basis = &RiBSplineBasis;
step = RI_BSPLINESTEP;
break;
case kCatmullromBasis:
basis = &RiCatmullRomBasis;
step = RI_CATMULLROMSTEP;
break;
case kHermiteBasis:
basis = &RiHermiteBasis;
step = RI_HERMITESTEP;
break;
case kPowerBasis:
basis = &RiPowerBasis;
step = RI_POWERSTEP;
break;
default:
break;
}
if ( basis != NULL )
{
RiBasis( *basis, step, *basis, step);
}
}
if ( multiSample ) { WriteMotionBegin( args, sampleTimes ); }
}
ParamListBuilder paramListBuilder;
paramListBuilder.add( "P", (RtPointer)sample.getPositions()->get() );
IFloatGeomParam widthParam = cs.getWidthsParam();
if ( widthParam.valid() )
{
ICompoundProperty parent = widthParam.getParent();
//prman requires "width" to be named "constantwidth" when
//constant instead of declared as "constant float width".
//It's even got an error message specifically for it.
std::string widthName;
if ( widthParam.getScope() == kConstantScope ||
widthParam.getScope() == kUnknownScope )
{
widthName = "constantwidth";
}
else
{
widthName = "width";
}
AddGeomParamToParamListBuilder<IFloatGeomParam>(
parent,
widthParam.getHeader(),
sampleSelector,
"float",
paramListBuilder,
1,
widthName);
}
IN3fGeomParam nParam = cs.getNormalsParam();
if ( nParam.valid() )
{
ICompoundProperty parent = nParam.getParent();
AddGeomParamToParamListBuilder<IN3fGeomParam>(
parent,
nParam.getHeader(),
sampleSelector,
"normal",
paramListBuilder);
}
IV2fGeomParam uvParam = cs.getUVsParam();
if ( uvParam.valid() )
{
ICompoundProperty parent = uvParam.getParent();
AddGeomParamToParamListBuilder<IV2fGeomParam>(
parent,
uvParam.getHeader(),
sampleSelector,
"float",
paramListBuilder,
2,
"st");
}
ICompoundProperty arbGeomParams = cs.getArbGeomParams();
AddArbitraryGeomParams( arbGeomParams,
sampleSelector, paramListBuilder );
RtToken curveType;
switch ( sample.getType() )
{
case kCubic:
curveType = const_cast<RtToken>( "cubic" );
break;
default:
curveType = const_cast<RtToken>( "linear" );
}
RtToken wrap;
switch ( sample.getWrap() )
{
case kPeriodic:
wrap = const_cast<RtToken>( "periodic" );
break;
default:
wrap = const_cast<RtToken>( "nonperiodic" );
}
RiCurvesV(curveType,
sample.getNumCurves(),
(RtInt*) sample.getCurvesNumVertices()->get(),
wrap,
paramListBuilder.n(),
paramListBuilder.nms(),
paramListBuilder.vals() );
}
if ( multiSample ) { RiMotionEnd(); }
}
