void modify_geometry(int obj, Scene& scene, GeometryList& out)
{
// Call the engine on all the caches:
for (unsigned i = 0; i < out.objects(); i++) {
GeoInfo& info = out[i];
// Copy over old UV attributes
keep_uvs(i, info, out);
// Reusable pointer for the attribute we are going to be writing to
Attribute* uv;
// Copy over pt attributes
uv = out.writable_attribute(i, Group_Points, uv_attrib_name, VECTOR4_ATTRIB);
transform_each_element_in_attribute(uv, info.points());
// If the previously detected group type is vertex attribute we need to modify it as well
// since vertex attribs take precedence and say a Sphere in Nuke has vertex attribs
// as opposed to point attribs :-( so justified double work here
if(t_group_type == Group_Vertices) {
uv = out.writable_attribute(i, Group_Vertices, uv_attrib_name, VECTOR4_ATTRIB);
transform_each_element_in_attribute(uv, info.vertices()); // Copy over vertex attributes
}
}
}
// This is needed to preserve UVs which are already there
void keep_uvs(int index, GeoInfo& info, GeometryList& out)
{
// get the original uv attribute used to restore untouched uv coordinate
const AttribContext* context = info.get_attribcontext(uv_attrib_name);
AttributePtr uv_original = context ? context->attribute : AttributePtr();
if(!uv_original){
Op::error( "Missing \"%s\" channel from geometry", uv_attrib_name );
return;
}
DD::Image::GroupType t_group_type = context->group; // texture coordinate group type
// we have two possibilities:
// the uv coordinate are stored in Group_Points or in Group_Vertices way
// sanity check
assert(t_group_type == Group_Points || t_group_type == Group_Vertices);
// create a buffer to write on it
Attribute* uv = out.writable_attribute(index, t_group_type, uv_attrib_name, VECTOR4_ATTRIB);
assert(uv);
// copy all original texture coordinate if available
if (uv_original){
// sanity check
assert(uv->size() == uv_original->size());
for (unsigned i = 0; i < uv->size(); i++) {
uv->vector4(i) = uv_original->vector4(i);
}
}
}
void modify_geometry(int obj, Scene& scene, GeometryList& out)
{
const char* uv_attrib_name = "uv";
// Call the engine on all the caches:
for (unsigned i = 0; i < out.objects(); i++) {
GeoInfo& info = out[i];
// Copy over old UV attributes
keep_uvs(i, info, out);
// TODO: investigate difference between vertex and point UVs
// Create a point attribute
Attribute* uv = out.writable_attribute(i, Group_Points, uv_attrib_name, VECTOR4_ATTRIB);
if(!uv) return;
for (unsigned p = 0; p < info.points(); p++) {
distorter.distort_uv(uv->vector4(p));
}
}
}
void MeshToNukeGeometryConverter::doConversion( const IECore::Object *from, GeometryList &to, int objIndex, const IECore::CompoundObject *operands ) const
{
assert( from );
const MeshPrimitive *mesh = static_cast<const MeshPrimitive *>( from );
const std::vector<int> &vertPerFace = mesh->verticesPerFace()->readable();
const std::vector<int> &vertIds = mesh->vertexIds()->readable();
std::vector<int>::const_iterator ids = vertIds.begin();
// create polygons
for ( std::vector<int>::const_iterator vpf = vertPerFace.begin(); vpf != vertPerFace.end(); vpf++ )
{
Polygon *p = new Polygon( *vpf, true );
for ( int v = 0; v < *vpf; v++, ids++ )
{
p->vertex(v) = *ids;
}
to.add_primitive( objIndex, p );
}
// get points
// \todo: add parameters for standard prim vars
const V3fVectorData *meshPoints = mesh->variableData< V3fVectorData >( "P", PrimitiveVariable::Vertex );
if ( meshPoints )
{
unsigned numPoints = meshPoints->readable().size();
PointList* points = to.writable_points( objIndex );
points->resize( numPoints );
std::transform( meshPoints->readable().begin(), meshPoints->readable().end(), points->begin(), IECore::convert< DD::Image::Vector3, Imath::V3f > );
}
// get normals
const V3fVectorData *meshNormals = mesh->variableData< V3fVectorData >( "N", PrimitiveVariable::Vertex );
if ( meshNormals )
{
Attribute* N = to.writable_attribute( objIndex, Group_Points, "N", NORMAL_ATTRIB);
unsigned p = 0;
for ( std::vector< Imath::V3f >::const_iterator nIt = meshNormals->readable().begin(); nIt < meshNormals->readable().end(); nIt++, p++)
{
N->normal(p) = IECore::convert< Vector3, Imath::V3f >( *nIt );
}
}
// get uvs
PrimitiveVariableMap::const_iterator uvIt = mesh->variables.find( "uv" );
if( uvIt != mesh->variables.end() && uvIt->second.interpolation == PrimitiveVariable::FaceVarying && uvIt->second.data->typeId() == V2fVectorDataTypeId )
{
Attribute* uv = to.writable_attribute( objIndex, Group_Vertices, "uv", VECTOR4_ATTRIB );
if( uvIt->second.indices )
{
const std::vector<Imath::V2f> &uvs = runTimeCast<V2fVectorData>( uvIt->second.data )->readable();
const std::vector<int> &indices = uvIt->second.indices->readable();
for( size_t i = 0; i < indices.size() ; ++i )
{
// as of Cortex 10, we take a UDIM centric approach
// to UVs, which clashes with Nuke, so we must flip
// the v values during conversion.
uv->vector4( i ).set( uvs[indices[i]][0], 1.0 - uvs[indices[i]][1], 0.0f, 1.0f );
}
}
else
{
const std::vector<Imath::V2f> &uvs = runTimeCast<V2fVectorData>( uvIt->second.data )->readable();
for( size_t i = 0; i < uvs.size() ; ++i )
{
// as of Cortex 10, we take a UDIM centric approach
// to UVs, which clashes with Nuke, so we must flip
// the v values during conversion.
uv->vector4( i ).set( uvs[i][0], 1.0 - uvs[i][1], 0.0f, 1.0f );
}
}
}
// get colours
const Color3fVectorData *meshColours = mesh->variableData< Color3fVectorData >( "Cs", PrimitiveVariable::FaceVarying );
if ( meshColours )
{
Attribute *Cf = to.writable_attribute( objIndex, Group_Vertices, "Cf", VECTOR4_ATTRIB );
unsigned v = 0;
for ( std::vector< Imath::Color3f >::const_iterator cIt = meshColours->readable().begin(); cIt < meshColours->readable().end(); cIt++, v++)
{
Cf->vector4( v ).set( (*cIt)[0], (*cIt)[1], (*cIt)[2], 1 );
}
}
// \todo Implement custom prim vars...
}
/*virtual*/
void ABCReadGeo::create_geometry(Scene& scene, GeometryList& out)
{
if (filename()[0] == '\0') {
out.delete_objects();
return;
}
IArchive archive( Alembic::AbcCoreHDF5::ReadArchive(),
filename(),//archiveName,
Abc::ErrorHandler::kQuietNoopPolicy );
if (!archive.valid()) {
std::cout << "error reading archive" << std::endl;
error("Unable to read file");
return;
}
IObject archiveTop = archive.getTop();
std::vector<Alembic::AbcGeom::IObject> _objs;
getABCGeos(archiveTop, _objs);
// current Time to sample from
chrono_t curTime = m_sampleFrame / _FPS;
if ( rebuild(Mask_Primitives)) {
out.delete_objects();
}
int obj = 0;
for( std::vector<Alembic::AbcGeom::IObject>::const_iterator iObj( _objs.begin() ); iObj != _objs.end(); ++iObj ) {
// Leave an empty obj if knob is unchecked
if (!active_objs[obj] ) {
out.add_object(obj);
PointList& points = *out.writable_points(obj);
points.resize(0);
out[obj].delete_group_attribute(Group_Vertices,kUVAttrName, VECTOR4_ATTRIB);
obj++;
continue;
}
if ( rebuild(Mask_Primitives)) {
out.add_object(obj);
if (bbox_objs[obj]) { //(bbox_mode) {
buildBboxPrimitives(out, obj);
}
else {
buildABCPrimitives(out, obj, *iObj, curTime);
}
}
if ( rebuild(Mask_Points)) {
PointList& points = *out.writable_points(obj);
if (bbox_objs[obj]) { //(bbox_mode) {
Imath::Box3d bbox = getBounds(*iObj, curTime);
points.resize(8);
IObject iObj_copy(*iObj);
Matrix4 xf = getConcatMatrix(iObj_copy,curTime, interpolate !=0); // for some reason getParent() won't take a const IObject, hence the copy...
// Add bbox corners
for (unsigned i = 0; i < 8; i++) {
Vector3 pt((i&4)>>2 ? bbox.max.x : bbox.min.x, (i&2)>>1 ? bbox.max.y : bbox.min.y, (i%2) ? bbox.max.z : bbox.min.z );
points[i] = xf.transform(pt);
}
}
else{
writePoints(*iObj, points, curTime, interpolate !=0);
}
}
if ( rebuild(Mask_Attributes)) {
if (bbox_objs[obj]) { //(bbox_mode)
out[obj].delete_group_attribute(Group_Vertices,kUVAttrName, VECTOR4_ATTRIB);
}
else {
// set UVs
Attribute* UV = out.writable_attribute(obj, Group_Vertices, kUVAttrName, VECTOR4_ATTRIB);
IV2fGeomParam uvParam = getUVsParam(*iObj);
setUVs(out[obj], uvParam, UV, curTime);
// set Normals
IN3fGeomParam nParam = getNsParam(*iObj);
if (nParam.valid()) {
Attribute* N = out.writable_attribute(obj, Group_Vertices, kNormalAttrName, NORMAL_ATTRIB);
setNormals(out[obj], nParam, N, curTime);
}
}
}
obj++;
}