def build_plate(polygon, points):
'''
build a surface from a constraining polygon(s) and point(s)
@param polygon: list of polygons ( TopoDS_Shape)
@param points: list of points ( gp_Pnt )
'''
# plate surface
bpSrf = GeomPlate_BuildPlateSurface(3, 15, 2)
# add curve constraints
for poly in polygon:
for edg in WireExplorer(poly).ordered_edges():
c = BRepAdaptor_HCurve()
c.ChangeCurve().Initialize(edg)
constraint = BRepFill_CurveConstraint(c.GetHandle(), 0)
bpSrf.Add(constraint.GetHandle())
# add point constraint
for pt in points:
bpSrf.Add(GeomPlate_PointConstraint(pt, 0).GetHandle())
bpSrf.Perform()
maxSeg, maxDeg, critOrder = 9, 8, 0
tol = 1e-4
dmax = max([tol, 10 * bpSrf.G0Error()])
srf = bpSrf.Surface()
plate = GeomPlate_MakeApprox(srf, tol, maxSeg, maxDeg, dmax, critOrder)
uMin, uMax, vMin, vMax = srf.GetObject().Bounds()
return make_face(plate.Surface(), uMin, uMax, vMin, vMax, 1e-4)
def build_geom_plate(edges):
bpSrf = GeomPlate_BuildPlateSurface(3, 9, 12)
# add curve constraints
for edg in edges:
c = BRepAdaptor_HCurve()
print('edge:', edg)
c.ChangeCurve().Initialize(edg)
constraint = BRepFill_CurveConstraint(c.GetHandle(), 0)
bpSrf.Add(constraint.GetHandle())
# add point constraint
try:
bpSrf.Perform()
except RuntimeError:
print('Failed to build the geom plate surface')
maxSeg, maxDeg, critOrder = 9, 8, 0
srf = bpSrf.Surface()
plate = GeomPlate_MakeApprox(srf, 1e-04, 100, 9, 1e-03, 0)
uMin, uMax, vMin, vMax = srf.GetObject().Bounds()
face = make_face(plate.Surface(), uMin, uMax, vMin, vMax, 1e-6)
return face
def make_constrained_surface_from_edges(edges):
'''
DOESNT RESPECT BOUNDARIES
'''
from OCC.Core.GeomPlate import GeomPlate_MakeApprox, GeomPlate_BuildPlateSurface
from OCC.Core.Core.BRepFill import BRepFill_CurveConstraint
bpSrf = GeomPlate_BuildPlateSurface(3, 15, 2)
for edg in edges:
c = BRepAdaptor_HCurve()
c.ChangeCurve().Initialize(edg)
constraint = BRepFill_CurveConstraint(c.GetHandle(), 0)
bpSrf.Add(constraint.GetHandle())
bpSrf.Perform()
maxSeg, maxDeg, critOrder = 9, 8, 0
tol = 1e-4
srf = bpSrf.Surface()
plate = GeomPlate_MakeApprox(srf, tol, maxSeg, maxDeg, tol, critOrder)
uMin, uMax, vMin, vMax = srf.GetObject().Bounds()
face = make_face(plate.Surface(), uMin, uMax, vMin, vMax)
return face