def points_frm_wire(occ_wire):
'''
vertex_list = geom_explorer(occ_wire, TopAbs_VERTEX)
point_list = vertex_list_2_point_list(vertex_list)
n_pt_list = []
for pt in point_list:
if n_pt_list:
p_vert = (n_pt_list[-1].X(), n_pt_list[-1].Y(), n_pt_list[-1].Z())
c_vert = (pt.X(), pt.Y(), pt.Z())
if c_vert != p_vert:
n_pt_list.append(pt)
else:
n_pt_list.append(pt)
return n_pt_list
'''
#TODO: WHEN DEALING WITH OPEN WIRE IT WILL NOT RETURN THE LAST VERTEX
verts = Topology.WireExplorer(occ_wire).ordered_vertices()
point_list = []
for vert in verts:
pt = BRep_Tool.Pnt(vert)
point_list.append(pt)
#this always returns points in order that is opposite of the input
#e.g. if the inputs are clockwise it will ouput anticlockwise
#e.g. if the inputs are anticlockwise it will ouput clockwise
#thus the point list needs to be reversed to reflect the true order
#point_list = list(reversed(point_list))
return point_list
def project_face_on_faceplane(occface2projon, occface2proj):
"""
This function projects the OCCface onto another OCCface plane. The plane stretches through infinity.
Parameters
----------
occface2projon : OCCface
The OCCface to be projected on.
occface2proj : OCCface
The OCCface to be projected.
Returns
-------
list of points : pyptlist
The list of projected points.
"""
wire_list = list(Topology.Topo(occface2proj).wires())
occpt_list = []
for wire in wire_list:
occpts = Topology.WireExplorer(wire).ordered_vertices()
occpt_list.extend(occpts)
proj_ptlist = []
for occpt in occpt_list:
occ_pnt = BRep_Tool.Pnt(occpt)
pypt = (occ_pnt.X(), occ_pnt.Y(), occ_pnt.Z())
projected_pt = project_point_on_faceplane(pypt, occface2projon)
proj_ptlist.append(projected_pt)
return proj_ptlist
def srf_nrml_facing_solid_inward(occ_face, occ_solid):
#move the face in the direction of the normal
#first offset the face so that vert will be within the solid
o_wire = Construct.make_offset(occ_face, 0.0001)
o_face = BRepBuilderAPI_MakeFace(o_wire).Face()
wire_list = list(Topology.Topo(o_face).wires())
occpt_list = []
for wire in wire_list:
occpts = Topology.WireExplorer(wire).ordered_vertices()
occpt_list.extend(occpts)
pt = BRep_Tool.Pnt(occpt_list[0]) #a point that is on the edge of the face
normal = face_normal(occ_face)
gp_direction2move = gp_Vec(normal[0], normal[1], normal[2])
gp_moved_pt = pt.Translated(gp_direction2move.Multiplied(0.001))
mv_pt = (gp_moved_pt.X(), gp_moved_pt.Y(), gp_moved_pt.Z())
in_solid = point_in_solid(occ_solid, mv_pt)
if in_solid:
return True
else:
return False
def project_face_on_faceplane(occface2projon, occface2proj):
wire_list = list(Topology.Topo(occface2proj).wires())
occpt_list = []
for wire in wire_list:
occpts = Topology.WireExplorer(wire).ordered_vertices()
occpt_list.extend(occpts)
proj_ptlist = []
for occpt in occpt_list:
occ_pnt = BRep_Tool.Pnt(occpt)
pypt = (occ_pnt.X(), occ_pnt.Y(), occ_pnt.Z())
projected_pt = project_point_on_faceplane(occface2projon, pypt)
proj_ptlist.append(projected_pt)
return proj_ptlist
def edges_frm_wire(occwire):
"""
This function fetches a list of OCCedges from the OCCwire. The wire is constructed based on the list of edges.
Parameters
----------
occwire : OCCwire
The OCCwire to be examined.
Returns
-------
list of edges : list of OCCedges
The list of OCCedges extracted from the OCCwire.
"""
edge_list = Topology.WireExplorer(occwire).ordered_edges()
return list(edge_list)
def getPolygonesFromShape(shape):
from Geometry.Geom3D import Pnt3D,Poly3D
exp = TopExp.TopExp_Explorer(shape, TopAbs.TopAbs_WIRE) # .TopAbs_FACE)
polygons = []
while exp.More():
wire = TopoDS.topods.Wire(TopoDS.topods.Wire(exp.Current()))
exp.Next()
points = []
from OCCUtils import Topology
explorer = Topology.WireExplorer(wire)
vertices = explorer.ordered_vertices()
for vertex in vertices:
pnt = BRep.BRep_Tool_Pnt(vertex)
points.append(Pnt3D(pnt.X(),pnt.Y(),pnt.Z()))
polygons.append(Poly3D(points))
return polygons
def points_frm_wire(occwire):
"""
This function fetches a list of points from the OCCwire. The wire is constructed based on the list of points.
TODO: WHEN DEALING WITH OPEN WIRE IT WILL NOT RETURN THE LAST VERTEX
Parameters
----------
occwire : OCCwire
The OCCwire to be examined.
Returns
-------
list of points : pyptlist
The list of points extracted from the OCCwire.
"""
verts = list(Topology.WireExplorer(occwire).ordered_vertices())
point_list = modify.occvertex_list_2_occpt_list(verts)
pyptlist = modify.occpt_list_2_pyptlist(point_list)
return pyptlist
def srf_nrml_facing_solid_inward(occface, occsolid):
"""
This function checks if the OCCface is facing the inside of the OCCsolid.
Parameters
----------
occface : OCCface
The OCCface to be checked.
occsolid : OCCsolid
The OCCsolid.
Returns
-------
True or False : bool
If True the face is facing the inside of the solid, if False the face is not facing inwards.
"""
#move the face in the direction of the normal
#first offset the face so that vert will be within the solid
o_wire = Construct.make_offset(occface, 0.0001)
o_face = BRepBuilderAPI_MakeFace(o_wire).Face()
wire_list = list(Topology.Topo(o_face).wires())
occpt_list = []
for wire in wire_list:
occpts = Topology.WireExplorer(wire).ordered_vertices()
occpt_list.extend(occpts)
pt = BRep_Tool.Pnt(occpt_list[0]) #a point that is on the edge of the face
normal = face_normal(occface)
gp_direction2move = gp_Vec(normal[0], normal[1], normal[2])
gp_moved_pt = pt.Translated(gp_direction2move.Multiplied(0.001))
mv_pt = (gp_moved_pt.X(), gp_moved_pt.Y(), gp_moved_pt.Z())
in_solid = point_in_solid(occsolid, mv_pt)
if in_solid:
return True
else:
return False
def edges_frm_wire(occ_wire):
edge_list = Topology.WireExplorer(occ_wire).ordered_edges()
return list(edge_list)