455 lines
17 KiB
C++
455 lines
17 KiB
C++
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/*
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----
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This file is part of SECONDO.
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Copyright (C) 2019,
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Faculty of Mathematics and Computer Science,
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Database Systems for New Applications.
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SECONDO is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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SECONDO is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with SECONDO; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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----
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//[<] [\ensuremath{<}]
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//[>] [\ensuremath{>}]
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\setcounter{tocdepth}{3}
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\tableofcontents
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1 Analyze Geometries Operator
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*/
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#include "opAnalyzeGeom.h"
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#include "../utility/DbScan.h"
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#include "../utility/Timer.h"
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#include "../utility/MathUtils.h"
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#include "GpPlane.h"
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#include "GpSphere.h"
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#include "GpCylinder.h"
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#include "GpCone.h"
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using namespace pointcloud2;
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extern NestedList *nl;
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bool op_analyzeGeom::REPORT_TO_CONSOLE = true;
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/*
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1.1 Type Mapping
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*/
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ListExpr op_analyzeGeom::analyzeGeomTM(ListExpr args) {
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if (!(nl->HasLength(args, 1) && Pointcloud2::TypeCheck(nl->First(args)))) {
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return listutils::typeError("wrong input");
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}
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// get the attribute indices of ObjID and CatID, if existing.
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// Ensure these attributes are of type CcInt
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ListExpr cloudType = nl->First(args);
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int attrIndexObjID = -1;
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int attrIndexCatID = -1;
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bool hasTuples = Pointcloud2::isTupleCloud(cloudType);
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ListExpr attrList = nl->TheEmptyList();
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if (hasTuples) {
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attrList = nl->Second(Pointcloud2::getTupleType(cloudType));
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ListExpr type;
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attrIndexObjID = listutils::findAttribute(attrList, OBJ_ID, type) - 1;
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if (attrIndexObjID >= 0 &&
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!listutils::isSymbol(type, CcInt::BasicType())) {
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return listutils::typeError("wrong type of attribute ObjID");
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}
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attrIndexCatID = listutils::findAttribute(attrList, CAT_ID, type) - 1;
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if (attrIndexCatID >= 0 &&
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!listutils::isSymbol(type, CcInt::BasicType())) {
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return listutils::typeError("wrong type of attribute CatID");
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}
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// ensure that either both attributes are present or both are missing
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if ((attrIndexObjID >= 0) != (attrIndexCatID >= 0)) {
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return listutils::typeError("one of the attributes "
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"ObjID and CatID is defined, the other is missing.");
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}
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}
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// remember whether the source cloud has ObjIDs from a previous analysis.
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// If so, we will have to read through the tuples in Value Mapping to
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// exclude points which have already been assigned to an object.
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bool hasOldObjIDs = (attrIndexObjID >= 0);
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// append the attributes ObjID and CatID to the result type, if missing
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ListExpr newCloudType;
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if (!hasOldObjIDs) {
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// calculate the appendage for the missing attributes
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ListExpr attrObjID = nl->TwoElemList(
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nl->SymbolAtom(OBJ_ID), listutils::basicSymbol<CcInt>());
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ListExpr attrCatID = nl->TwoElemList(
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nl->SymbolAtom(CAT_ID), listutils::basicSymbol<CcInt>());
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ListExpr appendage = nl->TwoElemList(attrObjID, attrCatID);
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// determine the new type with the attributes
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newCloudType = Pointcloud2::appendAttributesToCloud(cloudType,
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appendage);
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// determine the attribute indices in the new cloud type
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attrIndexObjID = hasTuples ? nl->ListLength(attrList) : 0;
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attrIndexCatID = attrIndexObjID + 1;
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} else {
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newCloudType = cloudType;
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// attrIndexObj/CatId will be identical in the new cloud
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}
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// use the append mechanism (see GuideAlgebra.pdf, p.48, section 11.1)
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// to inform Value Mapping about hasOldObjIDs and attrIndexes
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return nl->ThreeElemList(
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nl->SymbolAtom(Symbols::APPEND()),
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nl->ThreeElemList(
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nl->BoolAtom(hasOldObjIDs),
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nl->IntAtom(attrIndexObjID),
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nl->IntAtom(attrIndexCatID)),
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newCloudType);
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}
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/*
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1.2 Value Mapping
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*/
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int op_analyzeGeom::analyzeGeomVM(Word* args, Word& result, int message,
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Word& local, Supplier s) {
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if (REPORT_TO_CONSOLE)
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cout << endl << "starting analyzeGeom" << endl;
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result = qp->ResultStorage(s);
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// get source and result Pointcloud2. These variables must NOT be wrapped
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// in a shared_ptr, otherwise both clouds will be deleted when leaving
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// this method!
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Pointcloud2* sourceCloud = static_cast<Pointcloud2*>(args[0].addr);
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Pointcloud2* resultCloud = static_cast<Pointcloud2*>(result.addr);
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// get further parameters passed to Value Mapping by Type Mapping
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bool hasOldObjIDs = ((CcBool*)args[1].addr)->GetValue();
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int attrIndexObjID = ((CcInt*)args[2].addr)->GetValue();
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int attrIndexCatID = ((CcInt*)args[3].addr)->GetValue();
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// create a Timer instance for performance measurement
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Timer timer { Timer::UNIT::millis };
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size_t pointCount = sourceCloud->getPointCount();
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timer.getReportStream() << endl << "Timer for analyzeGeom, pointCount = "
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<< formatInt(pointCount) << ":" << endl;
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// first we'll clone our cloud, adding "ObjID" and "CatID" attributes
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// if they were missing from the sourceCloud
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timer.startTask("copy cloud");
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if (REPORT_TO_CONSOLE) {
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cout << "creating copy of source cloud (" << formatInt(pointCount)
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<< " points) with attributes " << OBJ_ID << " and " << CAT_ID
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<< endl;
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}
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std::vector<std::unique_ptr<Attribute>> attributes;
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if (!hasOldObjIDs) {
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// add the new attributes
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attributes.push_back(std::unique_ptr<Attribute>(new CcInt(true, 0)));
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attributes.push_back(std::unique_ptr<Attribute>(new CcInt(true, 0)));
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} // otherwise, attributes remains empty which allows for simpler copying
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resultCloud->copyAllWithAdditionalAttributes(sourceCloud,
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attributes);
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// ensure there are points to work with
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if (!resultCloud->isDefined()) {
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cout << "Pointcloud2 is undefined." << endl;
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return 0;
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} else if (resultCloud->getPointCount() == 0) {
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cout << "Pointcloud2 is empty." << endl;
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return 0;
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}
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// the mmrCloud constructs an MMRTree which stores the respective first
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// point of a point sequence. The size of a sequence is
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// determined by the number of points stored in each RTree node,
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// (theoretically, max. 76 points, usually about 70% of that).
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// Depending on params._maxMMRCloudSequenceLength, these sequences are
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// further refined into several sequences */
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timer.startTask("create MMRCloud");
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if (REPORT_TO_CONSOLE) {
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cout << "reading all " << formatInt(pointCount) << " points "
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"to main memory" << endl;
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}
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std::shared_ptr<MMRCloud> mmrCloud = std::make_shared<MMRCloud>(resultCloud,
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ParamsAnalyzeGeom::_maxMMRCloudSequenceLength);
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if (REPORT_TO_CONSOLE) {
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mmrCloud->_tree->printStats(pointCount,
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sizeof(DbScanPoint<DIMENSIONS>));
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}
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// "conceptual parameters" that relate to how the
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// analysis is done
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double typicalPointDist = 0.0; // = Pointcloud2::TYPICAL_POINT_DISTANCE;
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if (typicalPointDist <= 0.0) {
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size_t sampleSize = pointCount / 40;
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sampleSize = std::max(sampleSize, size_t(1000));
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typicalPointDist = mmrCloud->estimateTypicalPointDistance(
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sampleSize);
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}
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const ParamsAnalyzeGeom params = ParamsAnalyzeGeom(
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resultCloud->getPointCount(), typicalPointDist);
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// if the sourceCloud already contained ObjIDs, the points that were
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// assigned to ObjIDs are excluded by setting their bit to "false"
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// in the bitMask; maxObjID is set to the previous maximum ObjID:
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size_t totalPointCount = resultCloud->getPointCount();
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size_t unassignedPointCount = totalPointCount;
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int maxObjID = 0;
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if (hasOldObjIDs) {
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timer.startTask("get previous maximum ObjID");
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maxObjID = resultCloud->getMaxValueOfIntAttr(attrIndexObjID, 0,
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mmrCloud->_bitMask);
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unassignedPointCount = mmrCloud->_bitMask->getTrueCount();
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}
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// ensure there are points to work with
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bool overwriteObjIDs = false;
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if (unassignedPointCount == 0) {
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cout << "All " << formatInt(totalPointCount) << " points in this "
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"cloud have been assigned to an ObjID in a "
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"previous analysis.";
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cout << endl << "ObjIDs are reset for a new analysis." << endl;
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unassignedPointCount = totalPointCount;
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maxObjID = 0;
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mmrCloud->_bitMask->initializeAll(true);
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overwriteObjIDs = true;
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} else if (hasOldObjIDs) {
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cout << formatInt(totalPointCount - unassignedPointCount) << " point "
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"nave been assigned to " << maxObjID << " objects in a "
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"previous analysis. " << endl;
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cout << "Restricting analysis to the remaining " <<
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formatInt(unassignedPointCount) << " points." << endl;
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}
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// the ObjectIdManager will provide us with new object ids as needed,
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// and temporarily store the assignment of each point to an object id
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timer.startTask("create ObjectIdManager");
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std::shared_ptr<ObjectIdManager> objectManager
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= std::make_shared<ObjectIdManager>(
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resultCloud->getPointCount(), maxObjID, overwriteObjIDs,
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attrIndexObjID, attrIndexCatID);
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// we are doing a randomized Hough-transformation, so this sample
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// is random - the _bitMask excludes points already assigned to objects
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// in a previous analysis
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std::stringstream task;
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task << "take sample of " << formatInt(params._sampleSize )<< " points";
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if (REPORT_TO_CONSOLE) {
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cout << "taking sample of " << formatInt(params._sampleSize)
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<< " points" << endl;
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}
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timer.startTask(task.str());
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std::vector<SamplePoint> sample = op_analyzeGeom::takeSample(
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mmrCloud->_points, params._sampleSize, mmrCloud->_bitMask);
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// now we'll get the primitives in the order in which they shall be
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// identified (e.g. 1. Planes, 2. Spheres, 3. Cylinders, 4. Scones)
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// and iterate over them
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if (REPORT_TO_CONSOLE) {
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cout << endl << "starting analysis with parameters:" << endl
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<< "- minimum object size : "
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<< params._minimumObjectExtent << endl
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<< "- typical point distance in cloud : "
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<< params._typicalPointDistance << endl
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<< "- typical point distance in sample: "
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<< params._typicalSampleDistance << endl
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<< "- neighborhood diameter : "
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<< params._neighborhoodDiameter << endl;
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}
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// GpSphere will be analyzed first as currently it is the only finite
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// shape and it is less likely for points to get wrongly assigned to a
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// finite sphere than to an infinite plane, cylinder or cone)
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std::vector<std::shared_ptr<AbstractGeomPrimitive>> primitives =
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op_analyzeGeom::getAllPrimitives();
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for (std::shared_ptr<AbstractGeomPrimitive> primitive : primitives) {
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// find primitives of the current type in the sample and match
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// the _points to the identified shapes by setting their
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// _idOfBiggestObject in the objectManager to a new object id
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// unless they were already assigned to a bigger object
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primitive->projectClusterSetObjID(sample, mmrCloud, params,
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objectManager, timer);
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// tell the objectManager this type of primitives is done with
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objectManager->categoryFinished();
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}
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// make results (ObjID and CatID) persistent
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timer.startTask("save results");
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if (REPORT_TO_CONSOLE) {
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cout << endl << "saving results to cloud" << endl;
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}
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objectManager->appointFinalObjIDs(params._requiredObjSize);
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op_analyzeGeom::saveResultsToPointcloud(resultCloud,
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mmrCloud,
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objectManager);
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// print summary
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cout << endl << "analyzeGeom summary:" << endl;
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size_t categoryId = 0;
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size_t unassignedLeft = unassignedPointCount;
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for (std::shared_ptr<AbstractGeomPrimitive> primitive : primitives) {
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++categoryId;
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size_t assigned = objectManager->getAssignedPointCount(categoryId);
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cout << " * " << objectManager->getObjectCount(categoryId) << " "
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<< primitive->getCaption(true) << " with "
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<< formatInt(assigned) << " points found" << endl;
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unassignedLeft -= assigned;
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}
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if (unassignedLeft == 0) {
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cout << "All " << formatInt(unassignedPointCount) << " points were "
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"assigned." << endl;
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} else {
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cout << formatInt(unassignedLeft) << " of "
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<< formatInt(unassignedPointCount) << " points unassigned."
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<< endl;
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}
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// print runtime summary
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std::cout << timer.getReportForAllTasks();
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return 0;
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}
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/*
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1.3 Operator specification
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*/
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std::string op_analyzeGeom::getOperatorSpec(){
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return OperatorSpec(
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" pointcloud2 -> pointcloud2(...,ObjID,CatID)",
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" pc2 analyzeGeom",
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" Returns classified pc2 ",
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" query pc2 analyzeGeom"
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).getStr();
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}
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/*
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1.4 Operator methods
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*/
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std::shared_ptr<Operator> op_analyzeGeom::getOperator(){
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return std::make_shared<Operator>("analyzeGeom",
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getOperatorSpec(),
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&op_analyzeGeom::analyzeGeomVM,
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Operator::SimpleSelect,
|
||
|
|
&op_analyzeGeom::analyzeGeomTM);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
Does what the signature suggests: returns a random
|
||
|
|
selection of parameter points of size size\_of\_sample,
|
||
|
|
but none that are flipped in the corresponding bit-mask.
|
||
|
|
|
||
|
|
*/
|
||
|
|
std::vector<PointBase<DIMENSIONS>> op_analyzeGeom::takeSample(
|
||
|
|
const std::shared_ptr<std::vector<DbScanPoint<DIMENSIONS>>>& points,
|
||
|
|
const size_t size_of_sample,
|
||
|
|
const std::shared_ptr<BitArray> bit_mask) {
|
||
|
|
|
||
|
|
std::vector<PointBase<DIMENSIONS>> result;
|
||
|
|
result.reserve(size_of_sample);
|
||
|
|
|
||
|
|
// get an iterator that returns a random selection of (size_of_sample)
|
||
|
|
// ids of the points that are still "true" in the bitArray (i.e. a
|
||
|
|
// random selection of the points that have not yet been assigned to a
|
||
|
|
// geometrical object by opAnalyzeGeom)
|
||
|
|
auto iter = bit_mask->getIterator(size_of_sample);
|
||
|
|
int id;
|
||
|
|
while ((id = iter->next()) >= 0) {
|
||
|
|
PointBase<DIMENSIONS> point = points->at(id).toPointBase();
|
||
|
|
result.push_back(point);
|
||
|
|
}
|
||
|
|
return result;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
Makes the ObjIDs and CatIDs which were calculated in the analysis
|
||
|
|
persistent by storing them in the tuples associated with the points of
|
||
|
|
the Pointcloud2.
|
||
|
|
|
||
|
|
*/
|
||
|
|
void op_analyzeGeom::saveResultsToPointcloud (
|
||
|
|
Pointcloud2* _cloud,
|
||
|
|
std::shared_ptr<MMRCloud> mmr_cloud,
|
||
|
|
std::shared_ptr<ObjectIdManager> objManager) {
|
||
|
|
|
||
|
|
bool writeAll = objManager->mustOverwriteOldObjIDs();
|
||
|
|
if (!writeAll && !objManager->wereObjectIdsCreated())
|
||
|
|
return;
|
||
|
|
|
||
|
|
const int attrIndexObjID = objManager->_attrIndexObjID;
|
||
|
|
const int attrIndexCatID = objManager->_attrIndexCatID;
|
||
|
|
std::vector<int> attrIndices;
|
||
|
|
attrIndices.push_back(attrIndexObjID);
|
||
|
|
attrIndices.push_back(attrIndexCatID);
|
||
|
|
for (size_t smiId = 1; smiId < mmr_cloud->_indexOfSmiId.size(); ++smiId) {
|
||
|
|
size_t index = mmr_cloud->_indexOfSmiId[smiId];
|
||
|
|
if (index == 0)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
// get the object id and the corresponding category id
|
||
|
|
// (1 = planes, 2 = spheres etc)
|
||
|
|
int objID = objManager->getFinalObjID(index);
|
||
|
|
if (!writeAll && objID <= 0)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
// continue even if objID == 0 in case all points had been assigned
|
||
|
|
// previously and are reassigned now
|
||
|
|
int catID = objManager->getCategoryID(index);
|
||
|
|
|
||
|
|
PcPoint point;
|
||
|
|
_cloud->getPoint(smiId, &point);
|
||
|
|
if (point._tupleId == 0) {
|
||
|
|
assert (false); // we expect the operator to create the tuples
|
||
|
|
// before calling this method.
|
||
|
|
// create a tuple to store properties
|
||
|
|
Tuple* tuple = _cloud->createEmptyTuple();
|
||
|
|
tuple->PutAttribute(attrIndexObjID, new CcInt(objID));
|
||
|
|
tuple->PutAttribute(attrIndexCatID, new CcInt(catID));
|
||
|
|
_cloud->insertTupleForExistingPoint(tuple, point, smiId);
|
||
|
|
// do NOT call tuple->DeleteIfAllowed(); here!
|
||
|
|
} else {
|
||
|
|
// change an existing tuple
|
||
|
|
Tuple* tuple = _cloud->getTuple(point._tupleId);
|
||
|
|
std::vector<Attribute*> attrs;
|
||
|
|
attrs.push_back(new CcInt(true, objID));
|
||
|
|
attrs.push_back(new CcInt(true, catID));
|
||
|
|
_cloud->updateTuple(tuple, attrIndices, attrs);
|
||
|
|
tuple->DeleteIfAllowed();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
std::vector<std::shared_ptr<AbstractGeomPrimitive>>
|
||
|
|
op_analyzeGeom::getAllPrimitives(){
|
||
|
|
std::vector<std::shared_ptr<AbstractGeomPrimitive>> result;
|
||
|
|
result.push_back(std::make_shared<GpPlane>());
|
||
|
|
result.push_back(std::make_shared<GpSphere>());
|
||
|
|
result.push_back(std::make_shared<GpCylinder>());
|
||
|
|
result.push_back(std::make_shared<GpCone>());
|
||
|
|
return result;
|
||
|
|
}
|