To use MoorDyn in WEC-Sim, please

1. Download moorDyn from repo https://github.com/WEC-Sim/moorDyn
2. Place all the files and folders under WEC-Sim/source/functions/moorDyn folder

Note for Mac Users:

You need to rename the .dylib library that corresponds to your system architecture (type of CPU) to libmoordyn.dylib before completing step 2 above.

• Apple Silicon (2020 and later): run mv libmoordyn-arm64.dylib libmoordyn.dylib
• Intel (pre 2020): run mv libmoordyn-x86_64.dylib libmoordyn.dylib

--------------------- MoorDyn v2.3.7 -------------------------

Copyright 2014-2016 Matt Hall [email protected]

MoorDyn is a lumped-mass mooring line model intended for coupling with floating structure codes.

v2 builds upon v1 by adding new features including rigid bodies and support for wave loading at the free surface. WEC-Sim works properly with MoorDyn v2, but compatibility of the new features in WEC-Sim is currently still under development.

MoorDyn is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

MoorDyn is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.

You should have received a copy of the GNU General Public License along with MoorDyn. If not, see http://www.gnu.org/licenses/.

If the MoorDyn files on this repository are not functioning on your system, you should compile the code from source following the steps in the documentation. MoorDyn will automatically build with the right architecture for your system. Once you have your local MoorDyn library and source code, replace MoorDyn.h, MoorDynAPI.h, and the library file (e.g., libmoordyn.dll) from this repo with your local copy.

---------------------- More Information -------------------------

More information about MoorDyn is now available at moordyn.readthedocs.io -- including the User's Guide, source code, and examples.

For information about MoorDyn's formulation and some validation results, see M. Hall and A. Goupee, ìValidation of a lumped-mass mooring line model with DeepCwind semisubmersible model test data,î Ocean Engineering, vol. 104, pp. 590ñ603, Aug. 2015.
http://www.sciencedirect.com/science/article/pii/S0029801815002279

---------------------- Troubleshooting -------------------------

Mac architecture issue:

If WECSim on Mac gives architecture errors when running MoorDyn similar to:

Error using wecSim (line 46)
There was an error loading the library "WEC-Sim/source/functions/moorDyn/libmoordyn.dylib"
dlopen(WEC-Sim/source/functions/moorDyn/libmoordyn.dylib, 0x0006): tried:
'WEC-Sim/source/functions/moorDyn/libmoordyn.dylib' (mach-o file, but is an incompatible architecture
(have 'x86_64', need 'arm64e' or 'arm64')),
'WEC-Sim/source/functions/moorDyn/libmoordyn.dylib' (mach-o file, but is an incompatible
architecture (have 'x86_64', need 'arm64e' or 'arm64'))

then you have a mismatch between the MoorDyn compiled architecture and your system architecture. To resolve this, double check you copied and renamed the .dylib corrsponding to your system into the WEC-Sim/source/functions/moorDyn folder.

If that doesnt work, you should compile the code from source following the steps in the documentation. MoorDyn will automatically build with the right architecture for your system. Once you have your local MoorDyn library and source code, replace MoorDyn.h, MoorDynAPI.h, and libmoordyn.dylib from this repo with your local copy. The .h files can be found in MoorDyn/source/, and the library files can be found in MoorDyn/build/source/.

Note: to force MoorDyn to compile for a different architecture, add the -DCMAKE_OSX_ARCHITECTURES=<insert architecture> to your cmake call.