void
UsdImagingPointsAdapter::UpdateForTime(UsdPrim const& prim,
SdfPath const& cachePath,
UsdTimeCode time,
HdDirtyBits requestedBits,
HdDirtyBits* resultBits,
UsdImagingInstancerContext const*
instancerContext)
{
BaseAdapter::UpdateForTime(
prim, cachePath, time, requestedBits, resultBits, instancerContext);
UsdImagingValueCache* valueCache = _GetValueCache();
PrimvarInfoVector& primvars = valueCache->GetPrimvars(cachePath);
VtValue& pointsValues = valueCache->GetPoints(cachePath);
if (requestedBits & HdChangeTracker::DirtyPoints) {
_GetPoints(prim, &pointsValues, time);
UsdImagingValueCache::PrimvarInfo primvar;
primvar.name = HdTokens->points;
primvar.interpolation = UsdGeomTokens->vertex;
_MergePrimvar(primvar, &primvars);
}
if (requestedBits & HdChangeTracker::DirtyWidths) {
UsdImagingValueCache::PrimvarInfo primvar;
UsdGeomPoints points(prim);
VtFloatArray widths;
primvar.name = UsdGeomTokens->widths;
// XXX Add support for real constant interpolation
primvar.interpolation = UsdGeomTokens->vertex;
// Read the widths, if there is no widths create a buffer
// and fill it with default widths of 1.0f
if (!points.GetWidthsAttr().Get(&widths, time)) {
// Check if we have just updated the points because in that
// case we don't need to read the points again
if (!(requestedBits & HdChangeTracker::DirtyPoints)) {
_GetPoints(prim, &pointsValues, time);
}
for(size_t i = 0; i < pointsValues.Get<VtVec3fArray>().size() ; i ++) {
widths.push_back(1.0f);
}
}
_MergePrimvar(primvar, &primvars);
valueCache->GetWidths(cachePath) = VtValue(widths);
}
}
void
UsdImagingPointsAdapter::UpdateForTimePrep(UsdPrim const& prim,
SdfPath const& cachePath,
UsdTimeCode time,
HdDirtyBits requestedBits,
UsdImagingInstancerContext const*
instancerContext)
{
BaseAdapter::UpdateForTimePrep(
prim, cachePath, time, requestedBits, instancerContext);
UsdImagingValueCache* valueCache = _GetValueCache();
if (requestedBits & HdChangeTracker::DirtyPoints)
valueCache->GetPoints(cachePath);
if (requestedBits & HdChangeTracker::DirtyWidths)
valueCache->GetWidths(cachePath);
}