Files
solver/GNN/OndselSolver/AbsConstraint.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

78 lines
2.1 KiB
C++

/***************************************************************************
* Copyright (c) 2023 Ondsel, Inc. *
* *
* This file is part of OndselSolver. *
* *
* See LICENSE file for details about copyright. *
***************************************************************************/
#include "AbsConstraint.h"
#include "PartFrame.h"
using namespace MbD;
//
//AbsConstraint::AbsConstraint() {}
//
//AbsConstraint::AbsConstraint(const std::string& str) : Constraint(str) {}
AbsConstraint::AbsConstraint(size_t i)
{
axis = i;
}
void AbsConstraint::calcPostDynCorrectorIteration()
{
if (axis < 3) {
aG = static_cast<PartFrame*>(owner)->qX->at(axis);
}
else {
aG = static_cast<PartFrame*>(owner)->qE->at(axis - 3);
}
}
void AbsConstraint::useEquationNumbers()
{
iqXminusOnePlusAxis = static_cast<PartFrame*>(owner)->iqX + axis;
}
std::string MbD::AbsConstraint::constraintSpec()
{
return "AbsConstraint" + MbDMath::XYZFromInt(axis);
}
void AbsConstraint::fillPosICJacob(SpMatDsptr mat)
{
mat->atijplusNumber(iG, iqXminusOnePlusAxis, 1.0);
mat->atijplusNumber(iqXminusOnePlusAxis, iG, 1.0);
}
void AbsConstraint::fillPosICError(FColDsptr col)
{
Constraint::fillPosICError(col);
col->at(iqXminusOnePlusAxis) += lam;
}
void AbsConstraint::fillPosKineJacob(SpMatDsptr mat)
{
mat->atijplusNumber(iG, iqXminusOnePlusAxis, 1.0);
}
void AbsConstraint::fillVelICJacob(SpMatDsptr mat)
{
this->fillPosICJacob(mat);
}
void AbsConstraint::fillAccICIterError(FColDsptr col)
{
col->atiplusNumber(iqXminusOnePlusAxis, lam);
auto partFrame = static_cast<PartFrame*>(owner);
double sum;
if (axis < 3) {
sum = partFrame->qXddot->at(axis);
}
else {
sum = partFrame->qEddot->at(axis - 3);
}
col->atiplusNumber(iG, sum);
}