Python library from the solver of SolveSpace, an open source CAD software.
The example extracted from unit test:
from solvespace import SolverSystem, ResultFlag
sys = SolverSystem()
wp = sys.create_2d_base() # Workplane (Entity)
p0 = sys.add_point_2d(0, 0, wp) # Entity
sys.dragged(p0, wp) # Make a constraint with the entity
...
line0 = sys.add_line_2d(p0, p1, wp) # Create entity with others
...
line1 = sys.add_line_2d(p0, p3, wp)
sys.angle(line0, line1, 45, wp) # Constrain two entities
line1 = sys.entity(-1) # Entity handle can be re-generated and negatively indexed
...
if sys.solve() == ResultFlag.OKAY:
# Get the result (unpack from the entity or parameters)
# x and y are actually float type
dof = sys.dof()
x, y = sys.params(p2.params)
...
else:
# Error!
# Get the list of all constraints
failures = sys.failures()
...Solver can also be serialized and copied, but can not modify or undo last step.
import pickle
print(pickle.dumps(sys))
sys_new = sys.copy()The entity and parameter handles should have the same lifetime to the solver.
pip install solvespaceFirst build and install the module from the repo:
git submodule update --init extlib/mimalloc extlib/eigen
cd cython
pip install -e .Rebuild the module:
pip install -e . --no-depsRun the unit tests:
python -m unittestUninstall the module:
pip uninstall solvespace