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mainwindow.py
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mainwindow.py
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#!/usr/bin/env python
#
# Copyright 2020 Doug Blanding (dblanding@gmail.com)
#
# This file is part of cadViewer.
# The latest version of this file can be found at:
# //https://github.com/dblanding/cadviewer
#
# cadViewer is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# cadViewer is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# if not, write to the Free Software Foundation, Inc.
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
import logging
import os, os.path
import sys
from PyQt5.QtCore import Qt, QPersistentModelIndex, QModelIndex
from PyQt5.QtGui import QBrush, QColor
from PyQt5.QtWidgets import (QLabel, QMainWindow, QTreeWidget, QMenu,
QDockWidget, QDesktopWidget, QToolButton,
QLineEdit, QTreeWidgetItem, QAction, QDockWidget,
QToolBar, QFileDialog, QAbstractItemView,
QInputDialog, QTreeWidgetItemIterator)
from OCC.Core.AIS import AIS_Shape, AIS_Line, AIS_Circle
from OCC.Core.BRep import BRep_Tool
from OCC.Core.BRepAdaptor import BRepAdaptor_Curve
from OCC.Core.CPnts import CPnts_AbscissaPoint_Length
from OCC.Core.gp import gp_Vec
from OCC.Core.IFSelect import IFSelect_RetDone
from OCC.Core.Interface import Interface_Static_SetCVal
from OCC.Core.Prs3d import Prs3d_LineAspect
from OCC.Core.Quantity import (Quantity_Color, Quantity_NOC_GRAY,
Quantity_NOC_DARKGREEN, Quantity_NOC_MAGENTA1)
from OCC.Core.STEPCAFControl import STEPCAFControl_Writer
from OCC.Core.STEPControl import STEPControl_Writer, STEPControl_AsIs
from OCC.Core.TCollection import TCollection_ExtendedString
from OCC.Core.TDataStd import TDataStd_Name
from OCC.Core.TDF import TDF_LabelSequence
from OCC.Core.TopoDS import (topods_Edge, topods_Vertex)
from OCC.Core.XCAFDoc import XCAFDoc_DocumentTool_ShapeTool
import OCC.Display.OCCViewer
import OCC.Display.backend
used_backend = OCC.Display.backend.load_backend()
# from OCC.Display import qtDisplay
# import local version instead (allows changing rotate/pan/zoom controls)
import myDisplay.qtDisplay as qtDisplay
from OCC import VERSION
import rpnCalculator
import stepXD
print("OCC version: %s" % VERSION)
logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG) # set to DEBUG | INFO | ERROR
class TreeView(QTreeWidget): # With 'drag & drop' ; context menu
""" Display assembly structure.
TO DO: This Part/Assy tree view GUI and the OCAF data model need to be
maintained in sync with each other. That's not happening right now.
While it is very slick (from the user's perspective) to be able to edit
the assembly structure using 'drag & drop' of parts and assemblies within
the QTreeWidget Part/Assy view, it's no simple task to keep the model in
sync. There are some moves that need to be prohibited, such as moving an
item into a child relationship with an item that is not an assembly.
Currently, 'drag and drop' changes in the GUI are not propagated to the
OCAF data model.
IDEA: As an alternative to 'drag & drop', consider adding an option to
the RMB pop-up to change the parent of a QTreeWidgetItem.
"""
def __init__(self, parent=None):
QTreeWidget.__init__(self, parent)
self.header().setHidden(True)
self.setSelectionMode(self.ExtendedSelection)
self.setDragDropMode(self.InternalMove)
self.setDragEnabled(True)
self.setDropIndicatorShown(True)
self.setContextMenuPolicy(Qt.CustomContextMenu)
self.customContextMenuRequested.connect(self.contextMenu)
self.popMenu = QMenu(self)
def contextMenu(self, point):
self.menu = QMenu()
action = self.popMenu.exec_(self.mapToGlobal(point))
def dropEvent(self, event):
if event.source() == self:
QAbstractItemView.dropEvent(self, event)
def dropMimeData(self, parent, row, data, action):
if action == Qt.MoveAction:
return self.moveSelection(parent, row)
return False
def moveSelection(self, parent, position):
# save the selected items
selection = [QPersistentModelIndex(i)
for i in self.selectedIndexes()]
parent_index = self.indexFromItem(parent)
if parent_index in selection:
return False
# save the drop location in case it gets moved
target = self.model().index(position, 0, parent_index).row()
if target < 0:
target = position
# remove the selected items
taken = []
for index in reversed(selection):
item = self.itemFromIndex(QModelIndex(index))
if item is None or item.parent() is None:
taken.append(self.takeTopLevelItem(index.row()))
else:
taken.append(item.parent().takeChild(index.row()))
# insert the selected items at their new positions
while taken:
if position == -1:
# append the items if position not specified
if parent_index.isValid():
parent.insertChild(parent.childCount(), taken.pop(0))
else:
self.insertTopLevelItem(self.topLevelItemCount(),
taken.pop(0))
else:
# insert the items at the specified position
if parent_index.isValid():
parent.insertChild(min(target, parent.childCount()),
taken.pop(0))
else:
self.insertTopLevelItem(min(target, self.topLevelItemCount()),
taken.pop(0))
return True
class MainWindow(QMainWindow):
def __init__(self, *args):
super().__init__()
self.canva = qtDisplay.qtViewer3d(self)
# Renaming self.canva._display (like below) doesn't work.
# self.display = self.canva._display
self.setContextMenuPolicy(Qt.CustomContextMenu)
self.customContextMenuRequested.connect(self.contextMenu)
self.popMenu = QMenu(self)
self.setWindowTitle("Simple CAD App using PythonOCC-%s (PyQt5 backend)"%VERSION)
self.resize(960, 720)
self.setCentralWidget(self.canva)
self.createDockWidget()
self.wcToolBar = QToolBar("2D") # Construction toolbar
self.addToolBar(Qt.RightToolBarArea, self.wcToolBar)
self.wcToolBar.setMovable(True)
self.wgToolBar = QToolBar("2D") # Geom Profile toolbar
self.addToolBar(Qt.RightToolBarArea, self.wgToolBar)
self.wgToolBar.setMovable(True)
if sys.platform == 'darwin':
QtGui.qt_mac_set_native_menubar(False)
self.menu_bar = self.menuBar()
self._menus = {}
self._menu_methods = {}
self.centerOnScreen()
self.calculator = None
itemName = ['/', str(0)] # Root Item in TreeView
self.treeViewRoot = QTreeWidgetItem(self.treeView, itemName)
self.treeView.expandItem(self.treeViewRoot)
self.itemClicked = None # TreeView item that has been mouse clicked
# Internally, everything is always in mm
# scale user input and output values
# (user input values) * unitscale = value in mm
# (output values) / unitscale = value in user's units
self._unitDict = {'mm': 1.0, 'in': 25.4, 'ft': 304.8}
self.units = 'mm'
self.unitscale = self._unitDict[self.units]
self.unitsLabel = QLabel()
self.unitsLabel.setText("Units: %s " % self.units)
#self.unitsLabel.setFrameStyle(QFrame.StyledPanel|QFrame.Sunken)
self.endOpButton = QToolButton()
self.endOpButton.setText('End Operation')
self.endOpButton.clicked.connect(self.clearCallback)
self.currOpLabel = QLabel()
self.registeredCallback = None
self.currOpLabel.setText("Current Operation: %s " % self.registeredCallback)
self.lineEdit = QLineEdit()
self.lineEdit.returnPressed.connect(self.appendToStack)
status = self.statusBar()
status.setSizeGripEnabled(False)
status.addPermanentWidget(self.lineEdit)
status.addPermanentWidget(self.currOpLabel)
status.addPermanentWidget(self.endOpButton)
status.addPermanentWidget(self.unitsLabel)
status.showMessage("Ready", 5000)
self._currentUID = 0
self.drawList = [] # list of part uid's to be displayed
self.floatStack = [] # storage stack for floating point values
self.xyPtStack = [] # storage stack for 2d points (x, y)
self.ptStack = [] # storage stack for gp_Pnts
self.edgeStack = [] # storage stack for edge picks
self.faceStack = [] # storage stack for face picks
self.shapeStack = [] # storage stack for shape picks
self.lineEditStack = [] # list of user inputs
self.activePart = None # <TopoDS_Shape> object
self.activePartUID = 0
self._partDict = {} # k = uid, v = <ToopoDS_Shape> object
self._nameDict = {} # k = uid, v = partName
self._colorDict = {} # k = uid, v = part display color
self._transparencyDict = {} # k = uid, v = part display transparency
self._ancestorDict = {} # k = uid, v = ancestorUID
self.activeWp = None # WorkPlane object
self.activeWpUID = 0
self._wpDict = {} # k = uid, v = wpObject
self._wpNmbr = 1
self.activeAsy = self.treeViewRoot # tree node object
self.activeAsyUID = 0
self._assyDict = {} # k = uid, v = Loc
self._assyDict[0] = None # Root assembly has no location vector
self.showItemActive(0)
self.doc = None # <class 'OCC.Core.TDocStd.TDocStd_Document'>
def createDockWidget(self):
self.treeDockWidget = QDockWidget("Assy/Part Structure", self)
self.treeDockWidget.setObjectName("treeDockWidget")
self.treeDockWidget.setAllowedAreas(Qt.LeftDockWidgetArea| Qt.RightDockWidgetArea)
self.treeView = TreeView() # Assy/Part structure (display)
self.treeView.itemClicked.connect(self.treeViewItemClicked)
self.treeDockWidget.setWidget(self.treeView)
self.addDockWidget(Qt.LeftDockWidgetArea, self.treeDockWidget)
#### PyQt menuBar & general methods:
def centerOnScreen(self):
'''Centers the window on the screen.'''
resolution = QDesktopWidget().screenGeometry()
self.move((resolution.width() / 2) - (self.frameSize().width() / 2),
(resolution.height() / 2) - (self.frameSize().height() / 2))
def add_menu(self, menu_name):
_menu = self.menu_bar.addMenu("&"+menu_name)
self._menus[menu_name] = _menu
def add_function_to_menu(self, menu_name, text, _callable):
assert callable(_callable), 'the function supplied is not callable'
try:
_action = QAction(text, self)
# if not, the "exit" action is now shown...
# Qt is trying so hard to be native cocoa'ish that its a nuisance
_action.setMenuRole(QAction.NoRole)
_action.triggered.connect(_callable)
self._menus[menu_name].addAction(_action)
except KeyError:
raise ValueError('the menu item %s does not exist' % (menu_name))
def closeEvent(self, event): # things that need to happen on exit
try:
self.calculator.close()
except:
pass
event.accept()
#############################################
#
# 'treeView' (QTreeWidget) related methods:
#
#############################################
def contextMenu(self, point):
self.menu = QMenu()
action = self.popMenu.exec_(self.mapToGlobal(point))
def treeViewItemClicked(self, item): # called whenever treeView item is clicked
self.itemClicked = item # store item
if not self.inSync(): # click may have been on checkmark. Update drawList (if needed)
self.syncDrawListToChecked()
self.redraw()
def checkedToList(self):
"""Returns list of uid's of checked (part) items in treeView"""
dl = []
for item in self.treeView.findItems("", Qt.MatchContains | Qt.MatchRecursive):
if item.checkState(0) == 2:
strUID = item.text(1)
uid = int(strUID)
if (uid in self._partDict.keys()) or (uid in self._wpDict.keys()):
dl.append(uid)
return dl
def inSync(self):
"""Return True if checked items are in sync with drawList."""
return self.checkedToList() == self.drawList
def syncDrawListToChecked(self):
self.drawList = self.checkedToList()
def syncCheckedToDrawList(self):
for item in self.treeView.findItems("", Qt.MatchContains | Qt.MatchRecursive):
strUID = item.text(1)
uid = int(strUID)
if (uid in self._partDict) or (uid in self._wpDict):
if uid in self.drawList:
item.setCheckState(0, Qt.Checked)
else:
item.setCheckState(0, Qt.Unchecked)
def sortViewItems(self):
"""Return dicts of view items sorted by type: (prt, ay, wp)"""
# Traverse all treeView items
iterator = QTreeWidgetItemIterator(self.treeView)
pdict = {} # part-types {uid: item}
adict = {} # asy-types {uid: item}
wdict = {} # wp-types {uid: item}
while iterator.value():
item = iterator.value()
name = item.text(0)
strUID = item.text(1)
uid = int(strUID)
if uid in self._partDict:
pdict[uid] = item
elif uid in self._assyDict:
adict[uid] = item
elif uid in self._wpDict:
wdict[uid] = item
iterator += 1
return (pdict, adict, wdict)
def setClickedActive(self):
"""Set item clicked in treeView Active."""
item = self.itemClicked
if item:
self.setItemActive(item)
self.treeView.clearSelection()
self.itemClicked = None
def setItemActive(self, item):
"""From tree view item, set (part, wp or assy) to be active."""
if item:
name = item.text(0)
strUID = item.text(1)
uid = int(strUID)
print(f"Part selected: {name}, UID: {uid}")
pd, ad, wd = self.sortViewItems()
if uid in pd:
self.setActivePart(uid)
sbText = "%s [uid=%i] is now the active part" % (name, uid)
self.redraw()
elif uid in wd:
self.setActiveWp(uid)
sbText = "%s [uid=%i] is now the active workplane" % (name, uid)
self.redraw()
elif uid in ad:
self.setActiveAsy(uid)
sbText = "%s [uid=%i] is now the active workplane" % (name, uid)
self.statusBar().showMessage(sbText, 5000)
def showItemActive(self, uid):
"""Update tree view to show active status of (uid)."""
pd, ad, wd = self.sortViewItems()
if uid in pd:
# Clear BG color of all part items
for itm in pd.values():
itm.setBackground(0, QBrush(QColor(255, 255, 255, 0)))
# Set BG color of new active part
pd[uid].setBackground(0, QBrush(QColor('gold')))
elif uid in wd:
# Clear BG color of all wp items
for itm in wd.values():
itm.setBackground(0, QBrush(QColor(255, 255, 255, 0)))
# Set BG color of new active wp
wd[uid].setBackground(0, QBrush(QColor('lightgreen')))
elif uid in ad:
# Clear BG color of all asy items
for itm in ad.values():
itm.setBackground(0, QBrush(QColor(255, 255, 255, 0)))
# Set BG color of new active asy
ad[uid].setBackground(0, QBrush(QColor('lightblue')))
def setTransparent(self):
item = self.itemClicked
if item:
strUID = item.text(1)
uid = int(strUID)
if uid in self._partDict:
self._transparencyDict[uid] = 0.6
self.redraw()
self.itemClicked = None
def setOpaque(self):
item = self.itemClicked
if item:
strUID = item.text(1)
uid = int(strUID)
if uid in self._partDict:
self._transparencyDict.pop(uid)
self.redraw()
self.itemClicked = None
def editName(self): # Edit name of item clicked in treeView
item = self.itemClicked
sbText = '' # status bar text
if item:
name = item.text(0)
strUID = item.text(1)
uid = int(strUID)
prompt = 'Enter new name for part %s' % name
newName, OK = QInputDialog.getText(self, 'Input Dialog',
prompt, text=name)
if OK:
item.setText(0, newName)
sbText = "Part name changed to %s" % newName
self._nameDict[uid] = newName
self.treeView.clearSelection()
self.itemClicked = None
# Todo: update name in treeModel
self.statusBar().showMessage(sbText, 5000)
#############################################
#
# Administrative and data management methods:
#
#############################################
def launchCalc(self):
if not self.calculator:
self.calculator = rpnCalculator.Calculator(self)
self.calculator.show()
def setUnits(self, units):
if units in self._unitDict.keys():
self.units = units
self.unitscale = self._unitDict[self.units]
self.unitsLabel.setText("Units: %s " % self.units)
def getNewPartUID(self, objct, name="", ancestor=0,
typ='p', color=None):
"""
Method for assigning a unique ID (serial number) to a new part
(typ='p'), assembly (typ='a') or workplane (typ='w') generated
within the application. Using that uid as a key, record the
information in the various dictionaries. The process of modifying
an existing part generally involves doing an operation on an
existing 'ancestor' part, which is not thrown away, but merely
removed from the drawlist.
"""
uid = self._currentUID + 1
self._currentUID = uid
if ancestor:
if ancestor in self._colorDict.keys():
color = self._colorDict[ancestor]
if ancestor in self._transparencyDict.keys():
transp = self._transparencyDict[ancestor]
self._transparencyDict[uid] = transp
if not name:
name = self._nameDict[ancestor] # Keep ancestor name
if ancestor in self.drawList:
self.drawList.remove(ancestor) # Remove ancestor from draw list
if not name:
name = 'Part' # Default name
# Update appropriate dictionaries
if typ == 'p':
self._partDict[uid] = objct # OCC...
if color: # Quantity_Color()
c = OCC.Display.OCCViewer.rgb_color(color.Red(), color.Green(), color.Blue())
else:
c = OCC.Display.OCCViewer.rgb_color(.2, .1, .1) # default color
self._colorDict[uid] = c
if ancestor:
self._ancestorDict[uid] = ancestor
# add item to treeView
self.addItemToTreeView(name, uid)
# Make new part active
self.setActivePart(uid)
elif typ == 'a':
self._assyDict[uid] = objct # TopLoc_Location
# add item to treeView
self.addItemToTreeView(name, uid)
# Make new assembly active
self.setActiveAsy(uid)
elif typ == 'w':
name = "wp%i" % self._wpNmbr
self._wpNmbr += 1
self._wpDict[uid] = objct # wpObject
# add item to treeView
self.addItemToTreeView(name, uid)
# Make new workplane active
self.setActiveWp(uid)
self._nameDict[uid] = name
# Add new uid to draw list and sync w/ treeView
self.drawList.append(uid)
self.syncCheckedToDrawList()
return uid
def addItemToTreeView(self, name, uid):
itemName = [name, str(uid)]
item = QTreeWidgetItem(self.treeViewRoot, itemName)
item.setFlags(item.flags() | Qt.ItemIsUserCheckable)
item.setCheckState(0, Qt.Checked)
def appendToStack(self): # called when <ret> is pressed on line edit
self.lineEditStack.append(self.lineEdit.text())
self.lineEdit.clear()
cb = self.registeredCallback
if cb:
cb([]) # call self.registeredCallback with arg=empty_list
else:
self.lineEditStack.pop()
def setActivePart(self, uid):
"""Change active part status in coordinated manner."""
# modify status in self
self.activePartUID = uid
self.activePart = self._partDict[uid]
# show as active in treeView
self.showItemActive(uid)
def setActiveWp(self, uid):
"""Change active workplane status in coordinated manner."""
# modify status in self
self.activeWpUID = uid
self.activeWp = self._wpDict[uid]
# show as active in treeView
self.showItemActive(uid)
def setActiveAsy(self, uid):
"""Change active assembly status in coordinated manner."""
# modify status in self
self.activeAsyUID = uid
self.activeAsy = self._assyDict[uid]
# show as active in treeView
self.showItemActive(uid)
def valueFromCalc(self, value):
"""Receive value from calculator."""
cb = self.registeredCallback
if cb:
self.lineEditStack.append(str(value))
cb([]) # call self.registeredCallback with arg=empty_list
else:
print(value)
def clearLEStack(self):
self.lineEditStack = []
def clearAllStacks(self):
self.lineEditStack = []
self.floatStack = []
self.xyPtStack = []
self.edgeStack = []
self.faceStack = []
self.ptStack = []
def registerCallback(self, callback):
currCallback = self.registeredCallback
if currCallback: # Make sure a callback isn't already registered
self.clearCallback()
self.canva._display.register_select_callback(callback)
self.registeredCallback = callback
self.currOpLabel.setText("Current Operation: %s " % callback.__name__[:-1])
def clearCallback(self):
if self.registeredCallback:
self.canva._display.unregister_callback(self.registeredCallback)
self.registeredCallback = None
self.clearAllStacks()
self.currOpLabel.setText("Current Operation: None ")
self.statusBar().showMessage('')
self.canva._display.SetSelectionModeNeutral()
self.redraw()
#############################################
#
# 3D Display (Draw / Hide) methods:
#
#############################################
def fitAll(self):
self.canva._display.FitAll()
def eraseAll(self):
context = self.canva._display.Context
context.RemoveAll(True)
self.drawList = []
self.syncCheckedToDrawList()
def redraw(self):
context = self.canva._display.Context
if not self.registeredCallback:
self.canva._display.SetSelectionModeNeutral()
context.SetAutoActivateSelection(True)
context.RemoveAll(True)
for uid in self.drawList:
if uid in self._partDict.keys():
if uid in self._transparencyDict.keys():
transp = self._transparencyDict[uid]
else:
transp = 0.0
color = self._colorDict[uid]
aisShape = AIS_Shape(self._partDict[uid])
context.Display(aisShape, True)
context.SetColor(aisShape, color, True)
# Set shape transparency, a float from 0.0 to 1.0
context.SetTransparency(aisShape, transp, True)
drawer = aisShape.DynamicHilightAttributes()
context.HilightWithColor(aisShape, drawer, True)
elif uid in self._wpDict.keys():
wp = self._wpDict[uid]
border = wp.border
if uid == self.activeWpUID:
borderColor = Quantity_Color(Quantity_NOC_DARKGREEN)
else:
borderColor = Quantity_Color(Quantity_NOC_GRAY)
aisBorder = AIS_Shape(border)
context.Display(aisBorder, True)
context.SetColor(aisBorder, borderColor, True)
transp = 0.8 # 0.0 <= transparency <= 1.0
context.SetTransparency(aisBorder, transp, True)
drawer = aisBorder.DynamicHilightAttributes()
context.HilightWithColor(aisBorder, drawer, True)
clClr = Quantity_Color(Quantity_NOC_MAGENTA1)
for cline in wp.clines:
geomline = wp.geomLineBldr(cline)
aisline = AIS_Line(geomline)
aisline.SetOwner(geomline)
drawer = aisline.Attributes()
# asp parameters: (color, type, width)
asp = Prs3d_LineAspect(clClr, 2, 1.0)
drawer.SetLineAspect(asp)
aisline.SetAttributes(drawer)
context.Display(aisline, False) # (see comment below)
# 'False' above enables 'context' mode display & selection
pntlist = wp.intersectPts() # type <gp_Pnt>
for point in pntlist:
self.canva._display.DisplayShape(point)
for ccirc in wp.ccircs:
aiscirc = AIS_Circle(wp.convert_circ_to_geomCirc(ccirc))
drawer = aisline.Attributes()
# asp parameters: (color, type, width)
asp = Prs3d_LineAspect(clClr, 2, 1.0)
drawer.SetLineAspect(asp)
aiscirc.SetAttributes(drawer)
context.Display(aiscirc, False) # (see comment below)
# 'False' above enables 'context' mode display & selection
for edge in wp.edgeList:
self.canva._display.DisplayShape(edge, color="WHITE")
self.canva._display.Repaint()
def drawAll(self):
self.drawList = []
for k in self._partDict:
self.drawList.append(k)
for k in self._wpDict:
self.drawList.append(k)
self.syncCheckedToDrawList()
self.redraw()
def drawOnlyActivePart(self):
self.eraseAll()
uid = self.activePartUID
self.drawList.append(uid)
self.canva._display.DisplayShape(self._partDict[uid])
self.syncCheckedToDrawList()
self.redraw()
def drawOnlyPart(self, key):
self.eraseAll()
self.drawList.append(key)
self.syncCheckedToDrawList()
self.redraw()
def drawAddPart(self, key): # Add part to drawList
self.drawList.append(key)
self.syncCheckedToDrawList()
self.redraw()
def drawHidePart(self, key): # Remove part from drawList
if key in self.drawList:
self.drawList.remove(key)
self.syncCheckedToDrawList()
self.redraw()
#############################################
#
# Step Load / Save methods:
#
#############################################
def loadStep(self):
"""Bring in a step file as a 'disposable' treelib.Tree() structure.
Each node of the tree contains the following tuple:
(Name, UID, ParentUID, {Data})
where the Data dictionary is:
{'a': (isAssy?),
'l': (TopLoc_Location),
'c': (Quantity_Color),
's': (TopoDS_Shape)}
This format makes it convenient to:
1. Build the assy, part, name and color dictionaries using uid keys,
2. Display the model with all its component parts correctly located and
3. Build the Part/Assy tree view GUI (QTreeWidget).
Each QTreeWidgetItem is required to have a unique identifier. This means
that multiple instances of the same CAD geometry will each have different
uid's.
"""
prompt = 'Select STEP file to import'
fnametuple = QFileDialog.getOpenFileName(None, prompt, './',
"STEP files (*.stp *.STP *.step)")
fname, _ = fnametuple
logger.debug("Load file name: %s", fname)
if not fname:
print("Load step cancelled")
return
name = os.path.basename(fname).split('.')[0]
nextUID = self._currentUID
stepImporter = stepXD.StepImporter(fname, nextUID)
self.doc = stepImporter.doc # <class 'OCC.Core.TDocStd.TDocStd_Document'>
tree = stepImporter.tree
tempTreeDict = {} # uid:asyPrtTreeItem (used temporarily during unpack)
treedump = tree.expand_tree(mode=tree.DEPTH)
for uid in treedump: # type(uid) == int
node = tree.get_node(uid)
name = node.tag
itemName = [name, str(uid)]
parentUid = node.bpointer
if node.data['a']: # Assembly
if not parentUid: # This is the top level item
parentItem = self.treeViewRoot
else:
parentItem = tempTreeDict[parentUid]
item = QTreeWidgetItem(parentItem, itemName)
item.setFlags(item.flags() | Qt.ItemIsTristate | Qt.ItemIsUserCheckable)
self.treeView.expandItem(item)
tempTreeDict[uid] = item
Loc = node.data['l'] # Location object
self._assyDict[uid] = Loc
else: # Part
# add item to asyPrtTree treeView
if not parentUid: # This is the top level item
parentItem = self.treeViewRoot
else:
parentItem = tempTreeDict[parentUid]
item = QTreeWidgetItem(parentItem, itemName)
item.setFlags(item.flags() | Qt.ItemIsUserCheckable)
item.setCheckState(0, Qt.Checked)
tempTreeDict[uid] = item
color = node.data['c']
shape = node.data['s']
# Update dictionaries
self._partDict[uid] = shape
self._nameDict[uid] = name
if color:
c = OCC.Display.OCCViewer.rgb_color(color.Red(), color.Green(), color.Blue())
else:
c = OCC.Display.OCCViewer.rgb_color(.2, .1, .1) # default color
self._colorDict[uid] = c
self.activePartUID = uid # Set as active part
self.activePart = shape
self.drawList.append(uid) # Add to draw list
keyList = tempTreeDict.keys()
keyList = list(keyList)
keyList.sort()
maxUID = keyList[-1]
self._currentUID = maxUID
self.redraw()
def saveStepActPrt(self):
prompt = 'Choose filename for step file.'
fnametuple = QFileDialog.getSaveFileName(None, prompt, './',
"STEP files (*.stp *.STP *.step)")
fname, _ = fnametuple
if not fname:
print("Save step cancelled.")
return
# initialize the STEP exporter
step_writer = STEPControl_Writer()
Interface_Static_SetCVal("write.step.schema", "AP203")
# transfer shapes and write file
step_writer.Transfer(self.activePart, STEPControl_AsIs)
status = step_writer.Write(fname)
assert status == IFSelect_RetDone
def saveStep(self):
"""Export self.doc to STEP file."""
prompt = 'Choose filename for step file.'
fnametuple = QFileDialog.getSaveFileName(None, prompt, './',
"STEP files (*.stp *.STP *.step)")
fname, _ = fnametuple
if not fname:
print("Save step cancelled.")
return
# Reconstruct XCAFDoc related code from stepXD.StepImporter
labels = TDF_LabelSequence()
shape_tool = XCAFDoc_DocumentTool_ShapeTool(self.doc.Main())
shape_tool.GetShapes(labels)
logger.info('Number of labels at root : %i', labels.Length())
try:
rootlabel = labels.Value(1) # First label at root
except RuntimeError:
return
name = rootlabel.GetLabelName()
logger.info('Name of root label: %s', name)
isAssy = shape_tool.IsAssembly(rootlabel)
logger.info("First label at root holds an assembly? %s", isAssy)
# Modify self.doc by adding active part to rootlabel.
#Standard_Boolean expand = Standard_False; //default
#TDF_Label aLabel = myAssembly->AddComponent (aShape [,expand]);
newLabel = shape_tool.AddComponent(rootlabel, self.activePart, True)
#set a name to newlabel (as a reminder using OCAF), use:
#TCollection_ExtendedString aName ...;
#// contains the desired name for this Label (ASCII)
#TDataStd_Name::Set (aLabel, aName);
newName = TCollection_ExtendedString(self._nameDict[self.activePartUID])
TDataStd_Name.Set(newLabel, newName)
logger.info('Name of new part: %s', newName)
#myAssembly->UpdateAssemblies();
shape_tool.UpdateAssemblies()
# initialize the STEP exporter
step_writer = STEPCAFControl_Writer()
# transfer shapes and write file
step_writer.Transfer(self.doc)
status = step_writer.Write(fname)
assert status == IFSelect_RetDone
#############################################
#
# 3D Measure functons...
#
#############################################
def distPtPt(self):
if len(self.ptStack) == 2:
p2 = self.ptStack.pop()
p1 = self.ptStack.pop()
vec = gp_Vec(p1, p2)
dist = vec.Magnitude()
dist = dist / self.unitscale
self.calculator.putx(dist)
self.distPtPt()
else:
self.registerCallback(self.distPtPtC)
# How to enable selecting intersection points on WP?
self.canva._display.SetSelectionModeVertex()
statusText = "Select 2 points to measure distance."
self.statusBar().showMessage(statusText)
def distPtPtC(self, shapeList, *args): # callback (collector) for distPtPt
logger.debug('Edges selected: %s', shapeList)
logger.debug('args: %s', args) # args = x, y mouse coords
for shape in shapeList:
vrtx = topods_Vertex(shape)
gpPt = BRep_Tool.Pnt(vrtx) # convert vertex to gp_Pnt
self.ptStack.append(gpPt)
if len(self.ptStack) == 2:
self.distPtPt()
def edgeLen(self):
if self.edgeStack:
edge = self.edgeStack.pop()
edgelen = CPnts_AbscissaPoint_Length(BRepAdaptor_Curve(edge))
edgelen = edgelen / self.unitscale
self.calculator.putx(edgelen)
self.redraw()
self.edgeLen()
else:
self.registerCallback(self.edgeLenC)
self.canva._display.SetSelectionModeEdge()
statusText = "Pick an edge to measure."
self.statusBar().showMessage(statusText)
def edgeLenC(self, shapeList, *args): # callback (collector) for edgeLen
logger.debug('Edges selected: %s', shapeList)
logger.debug('args: %s', args) # args = x, y mouse coords
for shape in shapeList:
edge = topods_Edge(shape)
self.edgeStack.append(edge)
if self.edgeStack:
self.edgeLen()