def project_curve(self, other): # this way Geom_Circle and alike are valid too if (isinstance(other, TopoDS_Edge) or isinstance(other, Geom_Curve) or issubclass(other, Geom_Curve)): # convert edge to curve first, last = topexp.FirstVertex(other), topexp.LastVertex(other) lbound, ubound = BRep_Tool().Parameter(first, other), BRep_Tool().Parameter(last, other) other = BRep_Tool.Curve(other, lbound, ubound).GetObject() return geomprojlib.Project(other, self.surface_handle)
def endpoints(self): """Get tuple of start and finish point of current curve object (if it exists).""" assert (self.is_wire_or_edge()) if self.is_wire(): a, b = TopoDS_Vertex(), TopoDS_Vertex() topexp.Vertices(self.Wire(), a, b) return point3(a), point3(b) elif self.is_edge(): a = topexp.FirstVertex(self.Edge()) b = topexp.LastVertex(self.Edge()) return point3(a), point3(b)
def first_vertex(self): return topexp.FirstVertex(self)
def sort_edges_into_order(occedge_list, isclosed=False): """ This function creates a list of ordered OCCedges from a list of loose OCCedges. The edges does not need to form a close face. Parameters ---------- occedge_list : list of OCCedges The list of OCCedges to be sorted. isclosed : bool, optional True or False, is the resultant wires suppose to be closed or opened, Default = False. Returns ------- list of sorted edges : list of OCCedges A list of ordered OCCedges. """ from OCC.Core.TopoDS import topods from OCC.Core.TopExp import topexp from OCC.Core.BRep import BRep_Tool from OCC.Core.ShapeAnalysis import ShapeAnalysis_WireOrder from OCC.Core.Precision import precision sawo_statusdict = { 0: "all edges are direct and in sequence", 1: "all edges are direct but some are not in sequence", 2: "unresolved gaps remain", -1: "some edges are reversed, but no gaps remain", -2: "some edges are reversed and some gaps remain", -10: "failure on reorder" } mode3d = True SAWO = ShapeAnalysis_WireOrder(mode3d, precision.PConfusion()) for occedge in occedge_list: V1 = topexp.FirstVertex(topods.Edge(occedge)) V2 = topexp.LastVertex(topods.Edge(occedge)) pnt1 = BRep_Tool().Pnt(V1) pnt2 = BRep_Tool().Pnt(V2) SAWO.Add(pnt1.XYZ(), pnt2.XYZ()) SAWO.SetKeepLoopsMode(True) SAWO.Perform(isclosed) #print "SAWO.Status()", SAWO.Status() if not SAWO.IsDone(): raise RuntimeError("build wire: Unable to reorder edges: \n" + sawo_statusdict[SAWO.Status()]) else: if SAWO.Status() not in [0, -1]: pass # not critical, wirebuilder will handle this SAWO.SetChains(precision.PConfusion()) sorted_edge2dlist = [] #print "Number of chains: ", SAWO.NbChains() for i in range(SAWO.NbChains()): sorted_edges = [] estart, eend = SAWO.Chain(i + 1) #print "Number of edges in chain", i, ": ", eend - estart + 1 if (eend - estart + 1) == 0: continue for j in range(estart, eend + 1): idx = abs(SAWO.Ordered(j)) edge2w = occedge_list[idx - 1] if SAWO.Ordered(j) < 0: edge2w.Reverse() sorted_edges.append(edge2w) sorted_edge2dlist.append(sorted_edges) return sorted_edge2dlist