Files
solver/GNN/OndselSolver/Constant.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

84 lines
1.7 KiB
C++

/***************************************************************************
* Copyright (c) 2023 Ondsel, Inc. *
* *
* This file is part of OndselSolver. *
* *
* See LICENSE file for details about copyright. *
***************************************************************************/
#include "Constant.h"
#include "System.h"
#include "Units.h"
#include "Polynomial.h"
using namespace MbD;
Constant::Constant()
{
}
Constant::Constant(double val) : Variable(val)
{
}
Symsptr MbD::Constant::differentiateWRT(Symsptr)
{
return sptrConstant(0.0);
}
Symsptr MbD::Constant::integrateWRT(Symsptr var)
{
if (value == 0.0) return clonesptr();
auto slope = sptrConstant(value);
auto intercept = sptrConstant(0.0);
auto coeffs = std::make_shared<std::vector<Symsptr>>();
coeffs->push_back(intercept);
coeffs->push_back(slope);
return std::make_shared<Polynomial>(var, coeffs);
}
Symsptr MbD::Constant::expandUntil(Symsptr sptr, std::shared_ptr<std::unordered_set<Symsptr>>)
{
return sptr;
}
bool Constant::isConstant()
{
return true;
}
Symsptr MbD::Constant::clonesptr()
{
return std::make_shared<Constant>(*this);
}
bool MbD::Constant::isZero()
{
return value == 0.0;
}
bool MbD::Constant::isOne()
{
return value == 1.0;
}
void MbD::Constant::createMbD(std::shared_ptr<System>, std::shared_ptr<Units>)
{
return;
}
double MbD::Constant::getValue()
{
return value;
}
double MbD::Constant::getValue(double)
{
return value;
}
std::ostream& Constant::printOn(std::ostream& s) const
{
return s << this->value;
}