Changes between Version 6 and Version 7 of PythonOcc

Timestamp:

Dec 12, 2011, 2:55:40 PM (14 years ago)

Author:

skulovec

Comment:

Dodajanje primera: zaokrožitve, sestavi, STEP

PythonOcc

@@ -424 +424 @@
 }}}
 
+== Povzetek -- KT vaj 12.12.2011 ==
+
 === Prikaz enostavnega izvoza STEP formata za eno obliko ===
 {{{
@@ -450 +452 @@
 from OCC.BRepPrimAPI import *
 
-# Pripravimo enostaven CAD primer za izvoz v STEP format
+# Pripravimo enostavna CAD primera za izvoz v STEP format
 my_box_shape = BRepPrimAPI_MakeBox(50,50,50).Shape()
 my_sphere_shape = BRepPrimAPI_MakeSphere(20).Shape()
@@ -460 +462 @@
 my_step_exporter.write_file()
 }}}
+
+=== Uporaba funkcije zaokrožitve, pozicioniranje valja na izbrano mesto, združevanje CAD modelov ter izvoz v STEP format ===
+
+V naslednjem primeru so prikazane naslednje funkcije:
+* zaokrožitve
+* pozicioniranje elementa
+* združevanje CAD modelov
+* enostaven izvoz CAD modela v STEP format
+
+{{{
+#!python
+##Copyright 2011 Simon Kulovec (simon.kulovec@lecad.si)
+##This file is part of pythonOCC.
+
+## Importanje razlicnih knjiznic
+
+# Uporabniski vmesnik GUI
+from OCC.Display.SimpleGui import *
+
+# OpenCascade
+from OCC.gp import *
+from OCC.TopoDS import *
+from OCC.GC import *
+from OCC.BRepBuilderAPI import *
+from OCC.BRepPrimAPI import *
+from OCC.BRepFilletAPI import *
+from OCC.BRepAlgoAPI import *
+from OCC.Utils.Topology import *
+from OCC.BRep import *
+from OCC.Utils.DataExchange.STEP import STEPExporter
+
+# OCC.Display.SimpleGui.init_display() returns multiple
+# values which are assigned here
+display, start_display, add_menu, add_function_to_menu = \
+init_display()
+
+# Definiranje spremenljivk
+myWidth = 50.0
+myThickness = 30.0
+myHeight = 70.0
+
+# Definiranje zacetnih tock
+aPnt1 = gp_Pnt(-myWidth / 2. , 0 , 0)
+aPnt2 = gp_Pnt(-myWidth / 2. , -myThickness / 4. , 0)
+aPnt3 = gp_Pnt(0 , -myThickness / 2. , 0)
+aPnt4 = gp_Pnt(myWidth / 2. , -myThickness / 4. , 0)
+aPnt5 = gp_Pnt(myWidth / 2. , 0 , 0)
+
+# Definiranje geometrije
+aArcOfCircle = GC_MakeArcOfCircle(aPnt2,aPnt3 ,aPnt4)
+aSegment1 = GC_MakeSegment(aPnt1 , aPnt2)
+aSegment2 = GC_MakeSegment(aPnt4 , aPnt5)
+
+# Definiranje topologije
+aEdge1 = BRepBuilderAPI_MakeEdge(aSegment1.Value())
+aEdge2 = BRepBuilderAPI_MakeEdge(aArcOfCircle.Value())
+aEdge3 = BRepBuilderAPI_MakeEdge(aSegment2.Value())
+aWire  = BRepBuilderAPI_MakeWire(aEdge1.Edge() , aEdge2.Edge() ,\
+                                         aEdge3.Edge())
+
+# Izdelava celotnega profila - mirror
+
+xAxis = gp_OX()
+aTrsf = gp_Trsf()
+aTrsf.SetMirror(xAxis)
+aBRepTrsf = BRepBuilderAPI_Transform(aWire.Shape() , aTrsf)
+aMirroredShape = aBRepTrsf.Shape()
+aMirroredWire = TopoDS_wire(aMirroredShape)
+mkWire = BRepBuilderAPI_MakeWire()
+mkWire.Add(aWire.Wire())
+mkWire.Add(aMirroredWire)
+myWireProfile = mkWire.Wire()
+
+# Telo: Iz profila se izdela telo
+myFaceProfile = BRepBuilderAPI_MakeFace(myWireProfile)
+aPrismVec = gp_Vec(0 , 0 , myHeight)
+myBody = BRepPrimAPI_MakePrism(myFaceProfile.Face() , aPrismVec)
+
+# Telo: Dodamo zaokrozitve (fillet)
+mkFillet = BRepFilletAPI_MakeFillet(myBody.Shape())
+topology_traverser = Topo(myBody.Shape())
+for aEdge in topology_traverser.edges():
+    mkFillet.Add(myThickness / 12. , aEdge)
+myBody = mkFillet.Shape()
+
+# Dodajanje grla na steklenico (valj)
+neckLocation = gp_Pnt(0, 0, myHeight) #Določitev lokacije valja
+neckNormal = gp_DZ() #smer normale, v katero bomo valj izvlekli
+neckAx2 = gp_Ax2(neckLocation, neckNormal) 
+
+myNeckRadius = myThickness / 4 #radij valja
+myNeckHeight = myHeight / 10 # višina valja
+
+mkCylinder = BRepPrimAPI_MakeCylinder(neckAx2 , myNeckRadius , \
+                                          myNeckHeight)
+myNeck = mkCylinder.Shape();
+
+myBody = BRepAlgoAPI_Fuse(myBody, myNeck) #dodajanje valja k obliki myBody
+
+# Izdelava sestava
+aRes = TopoDS_Compound() #Določitev spremenljivke za sestav
+aBuilder = BRep_Builder()
+aBuilder.MakeCompound (aRes)
+aBuilder.Add (aRes, myBody.Shape()) #Dodajanje različnih oblik v sestav aRes
+
+# Export to STEP ()
+my_step_exporter = STEPExporter("export_step_file.stp") #Določevanje imena STEP file.a 
+my_step_exporter.add_shape(aRes) #Dodajanje oblike v STEP file
+my_step_exporter.write_file()
+
+# Izris oblike
+display.EraseAll()
+print dir(display)
+display.DisplayShape(aRes)
+
+start_display()
+}}}