def uv_from_projected_point_on_face(face, pt):
'''
returns the uv coordinate from a projected point on a face
'''
srf = BRep_Tool().Surface(face)
sas = ShapeAnalysis_Surface(srf)
uv = sas.ValueOfUV(pt, 1e-2)
print('distance ', sas.Value(uv).Distance(pt))
return uv.Coord()
def build_points_network(bspl_srf):
""" Creates a list of gp_Pnt points from a bspline surface
"""
# first create a face
face = BRepBuilderAPI_MakeFace(bspl_srf, 1e-6).Face()
# get face uv bounds
umin, umax, vmin, vmax = shapeanalysis_GetFaceUVBounds(face)
print(umin, umax, vmin, vmax)
pnts = []
sas = ShapeAnalysis_Surface(bspl_srf)
u = umin
while u < umax:
v = vmin
while v < vmax:
p = sas.Value(u, v)
print("u=", u, " v=", v, "->X=", p.X(), " Y=", p.Y(), " Z=", p.Z())
pnts.append(p)
v += 0.1
u += 0.1
return pnts