Files
solver/GNN/OndselSolver/Numeric.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

35 lines
1.0 KiB
C++

/***************************************************************************
* Copyright (c) 2023 Ondsel, Inc. *
* *
* This file is part of OndselSolver. *
* *
* See LICENSE file for details about copyright. *
***************************************************************************/
#include <cmath>
#include <stdexcept>
#include "Numeric.h"
using namespace MbD;
double MbD::Numeric::arcTan0to2piYoverX(double y, double x)
{
//"(y/x) arcTan in the range 0 to 2*pi."
//"Double arcTan0to2piY: 1.0d overX: 1.0d."
if (y >= 0) {
//"First and second quadrants."
return std::atan2(y, x);
}
else {
//"Third and forth quadrants."
return 2.0 * M_PI + std::atan2(y, x);
}
}
bool MbD::Numeric::equaltol(double x, double xx, double tol)
{
return std::abs(x - xx) < tol;
}