Files
solver/GNN/OndselSolver/GEFullMat.cpp
forbes-0023 98051ba0c9 feat: add Phase 1 constraint solver addon, move prior content to GNN/
- Move existing OndselSolver, GNN ML layer, and tooling into GNN/
  directory for integration in later phases
- Add Create addon scaffold: package.xml, Init.py
- Add expression DAG with eval, symbolic diff, simplification
- Add parameter table with fixed/free variable tracking
- Add quaternion rotation as polynomial Expr trees
- Add RigidBody entity (7 DOF: position + unit quaternion)
- Add constraint classes: Coincident, DistancePointPoint, Fixed
- Add Newton-Raphson solver with symbolic Jacobian + numpy lstsq
- Add pre-solve passes: substitution + single-equation
- Add DOF counting via Jacobian SVD rank
- Add KindredSolver IKCSolver bridge for kcsolve integration
- Add 82 unit tests covering all modules

Registers as 'kindred' solver via kcsolve.register_solver() when
loaded by Create's addon_loader.
2026-02-20 20:35:47 -06:00

74 lines
2.1 KiB
C++

/***************************************************************************
* Copyright (c) 2023 Ondsel, Inc. *
* *
* This file is part of OndselSolver. *
* *
* See LICENSE file for details about copyright. *
***************************************************************************/
#include <cassert>
#include "GEFullMat.h"
using namespace MbD;
void GEFullMat::forwardEliminateWithPivot(size_t)
{
throw SimulationStoppingError("To be implemented.");
}
void GEFullMat::backSubstituteIntoDU()
{
answerX = std::make_shared<FullColumn<double>>(n);
answerX->at(n - 1) = rightHandSideB->at(m - 1) / matrixA->at(m - 1)->at(n - 1);
for (ssize_t i = (ssize_t)n - 2; i >= 0; i--) //Use ssize_t because of decrement
{
auto rowi = matrixA->at(i);
double sum = answerX->at(n) * rowi->at(n);
for (size_t j = i + 1; j < n - 1; j++)
{
sum += answerX->at(j) * rowi->at(j);
}
answerX->at(i) = (rightHandSideB->at(i) - sum) / rowi->at(i);
}
}
void GEFullMat::postSolve()
{
throw SimulationStoppingError("To be implemented.");
}
void GEFullMat::preSolvewithsaveOriginal(FMatDsptr, FColDsptr, bool)
{
throw SimulationStoppingError("To be implemented.");
}
void GEFullMat::preSolvewithsaveOriginal(SpMatDsptr, FColDsptr, bool)
{
throw SimulationStoppingError("To be implemented.");
}
double GEFullMat::getmatrixArowimaxMagnitude(size_t i)
{
return matrixA->at(i)->maxMagnitude();
}
FColDsptr GEFullMat::basicSolvewithsaveOriginal(FMatDsptr fullMat, FColDsptr fullCol, bool saveOriginal)
{
this->preSolvewithsaveOriginal(fullMat, fullCol, saveOriginal);
for (size_t p = 0; p < m; p++)
{
this->doPivoting(p);
this->forwardEliminateWithPivot(p);
}
this->backSubstituteIntoDU();
this->postSolve();
return answerX;
}
FColDsptr GEFullMat::basicSolvewithsaveOriginal(SpMatDsptr, FColDsptr, bool)
{
throw SimulationStoppingError("To be implemented.");
return FColDsptr();
}