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PathHop.py
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PathHop.py
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# -*- coding: utf-8 -*-
# ***************************************************************************
# * *
# * Copyright (c) 2014 Yorik van Havre <yorik@uncreated.net> *
# * *
# * This program is free software; you can redistribute it and/or modify *
# * it under the terms of the GNU Lesser General Public License (LGPL) *
# * as published by the Free Software Foundation; either version 2 of *
# * the License, or (at your option) any later version. *
# * for detail see the LICENCE text file. *
# * *
# * This program 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 Library General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with this program; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
import FreeCAD
import FreeCADGui
import Path
from PySide import QtCore, QtGui
"""Path Hop object and FreeCAD command"""
# Qt tanslation handling
try:
_encoding = QtGui.QApplication.UnicodeUTF8
def translate(context, text, disambig=None):
return QtGui.QApplication.translate(context, text, disambig, _encoding)
except AttributeError:
def translate(context, text, disambig=None):
return QtGui.QApplication.translate(context, text, disambig)
class ObjectHop:
def __init__(self, obj):
obj.addProperty("App::PropertyLink", "NextObject",
"Path", "The object to be reached by this hop")
obj.addProperty("App::PropertyDistance", "HopHeight",
"Path", "The Z height of the hop")
obj.Proxy = self
def __getstate__(self):
return None
def __setstate__(self, state):
return None
def execute(self, obj):
nextpoint = FreeCAD.Vector()
if obj.NextObject:
if obj.NextObject.isDerivedFrom("Path::Feature"):
# look for the first position of the next path
for c in obj.NextObject.Path.Commands:
if c.Name in ["G0", "G00", "G1", "G01", "G2", "G02", "G3", "G03"]:
nextpoint = c.Placement.Base
break
# absolute coords, millimeters, cancel offsets
output = "G90\nG21\nG40\n"
# go up to the given height
output += "G0 Z" + str(obj.HopHeight.Value) + "\n"
# go horizontally to the position of nextpoint
output += "G0 X" + str(nextpoint.x) + " Y" + str(nextpoint.y) + "\n"
# print output
path = Path.Path(output)
obj.Path = path
class ViewProviderPathHop:
def __init__(self, vobj):
vobj.Proxy = self
def attach(self, vobj):
self.Object = vobj.Object
return
def getIcon(self):
return ":/icons/Path-Hop.svg"
def __getstate__(self):
return None
def __setstate__(self, state):
return None
class CommandPathHop:
def GetResources(self):
return {'Pixmap': 'Path-Hop',
'MenuText': QtCore.QT_TRANSLATE_NOOP("Path_Hop", "Hop"),
'Accel': "P, H",
'ToolTip': QtCore.QT_TRANSLATE_NOOP("Path_Hop", "Creates a Path Hop object")}
def IsActive(self):
return FreeCAD.ActiveDocument is not None
def Activated(self):
# check that the selection contains exactly what we want
selection = FreeCADGui.Selection.getSelection()
if len(selection) != 1:
FreeCAD.Console.PrintError(
translate("Path_Hop", "Please select one path object\n"))
return
if not selection[0].isDerivedFrom("Path::Feature"):
FreeCAD.Console.PrintError(
translate("Path_Hop", "The selected object is not a path\n"))
return
FreeCAD.ActiveDocument.openTransaction(
translate("Pat_hHop", "Create Hop"))
FreeCADGui.addModule("PathScripts.PathHop")
FreeCADGui.addModule("PathScripts.PathUtils")
FreeCADGui.doCommand(
'obj = FreeCAD.ActiveDocument.addObject("Path::FeaturePython","Hop")')
FreeCADGui.doCommand('PathScripts.PathHop.ObjectHop(obj)')
FreeCADGui.doCommand(
'PathScripts.PathHop.ViewProviderPathHop(obj.ViewObject)')
FreeCADGui.doCommand(
'obj.NextObject = FreeCAD.ActiveDocument.' + selection[0].Name)
FreeCADGui.doCommand('PathScripts.PathUtils.addToProject(obj)')
FreeCAD.ActiveDocument.commitTransaction()
FreeCAD.ActiveDocument.recompute()
if FreeCAD.GuiUp:
# register the FreeCAD command
FreeCADGui.addCommand('Path_Hop', CommandPathHop())
FreeCAD.Console.PrintLog("Loading PathHop... done\n")