Files
solver/GNN/OndselSolver/Negative.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

53 lines
1.4 KiB
C++

/***************************************************************************
* Copyright (c) 2023 Ondsel, Inc. *
* *
* This file is part of OndselSolver. *
* *
* See LICENSE file for details about copyright. *
***************************************************************************/
#include "Negative.h"
#include "Constant.h"
using namespace MbD;
MbD::Negative::Negative(Symsptr arg) : FunctionX(arg)
{
}
double MbD::Negative::getValue()
{
return -xx->getValue();
}
Symsptr MbD::Negative::differentiateWRTx()
{
return sptrConstant(-1);
}
Symsptr MbD::Negative::expandUntil(Symsptr, std::shared_ptr<std::unordered_set<Symsptr>> set)
{
auto expand = xx->expandUntil(xx, set);
return std::make_shared<Negative>(expand);
}
Symsptr MbD::Negative::simplifyUntil(Symsptr, std::shared_ptr<std::unordered_set<Symsptr>> set)
{
auto simple = xx->simplifyUntil(xx, set);
if (simple->isConstant()) {
return sptrConstant(-simple->getValue());
}
return std::make_shared<Negative>(simple);
}
Symsptr MbD::Negative::copyWith(Symsptr arg)
{
return std::make_shared<Negative>(arg);
}
std::ostream& MbD::Negative::printOn(std::ostream& s) const
{
s << "-(" << *xx << ")";
return s;
}