Files
solver/GNN/OndselSolver/ConstantVelocityJoint.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

59 lines
1.7 KiB
C++

/***************************************************************************
* Copyright (c) 2023 Ondsel, Inc. *
* *
* This file is part of OndselSolver. *
* *
* See LICENSE file for details about copyright. *
***************************************************************************/
#include "ConstantVelocityJoint.h"
#include "System.h"
#include "AtPointConstraintIJ.h"
#include "CREATE.h"
#include "ConstVelConstraintIJ.h"
using namespace MbD;
MbD::ConstantVelocityJoint::ConstantVelocityJoint()
{
}
MbD::ConstantVelocityJoint::ConstantVelocityJoint(const std::string& str) : AtPointJoint(str)
{
}
//
//void MbD::ConstantVelocityJoint::initializeLocally()
//{
// if (!constraints->empty())
// {
// auto constraint = std::static_pointer_cast<ConstVelConstraintIJ>(constraints->back());
// constraint->initA01IeJe();
// constraint->initA10IeJe();
// }
// Joint::initializeLocally();
//}
void MbD::ConstantVelocityJoint::initializeGlobally()
{
if (constraints->empty())
{
createAtPointConstraints();
auto constVelIJ = ConstVelConstraintIJ::With(frmI, frmJ);
constVelIJ->setConstant(0.0);
addConstraint(constVelIJ);
this->root()->hasChanged = true;
}
else {
Joint::initializeGlobally();
}
}
void MbD::ConstantVelocityJoint::connectsItoJ(EndFrmsptr frmIe, EndFrmsptr frmJe)
{
//"Subsequent prescribed motions may make frmIe, frmJe become prescribed end frames."
//"Use newCopyEndFrameqc to prevent efrms from becoming EndFrameqct."
frmI = frmIe->newCopyEndFrameqc();
frmJ = frmJe->newCopyEndFrameqc();
}