d8b41f70d6
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318 lines
14 KiB
Python
318 lines
14 KiB
Python
# ***************************************************************************
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# * (c) 2009, 2010 Yorik van Havre <yorik@uncreated.net> *
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# * (c) 2009, 2010 Ken Cline <cline@frii.com> *
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# * (c) 2020 Eliud Cabrera Castillo <e.cabrera-castillo@tum.de> *
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# * *
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# * This file is part of the FreeCAD CAx development system. *
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# * *
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# * This program is free software; you can redistribute it and/or modify *
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# * it under the terms of the GNU Lesser General Public License (LGPL) *
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# * as published by the Free Software Foundation; either version 2 of *
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# * the License, or (at your option) any later version. *
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# * for detail see the LICENCE text file. *
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# * *
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# * FreeCAD is distributed in the hope that it will be useful, *
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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# * GNU Library General Public License for more details. *
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# * *
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# * You should have received a copy of the GNU Library General Public *
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# * License along with FreeCAD; if not, write to the Free Software *
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# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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# * USA *
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# * *
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# ***************************************************************************
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"""Provides tools for offsetting objects with the Draft Workbench.
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It mostly works on lines, polylines, and similar objects with
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regular geometrical shapes, like rectangles.
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"""
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## @package gui_offset
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# \ingroup DRAFT
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# \brief Provides tools for offsetting objects with the Draft Workbench.
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import math
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from PySide.QtCore import QT_TRANSLATE_NOOP
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import FreeCAD as App
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import FreeCADGui as Gui
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import Draft_rc
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import DraftVecUtils
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import draftutils.utils as utils
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import draftguitools.gui_base_original as gui_base_original
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import draftguitools.gui_tool_utils as gui_tool_utils
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import draftguitools.gui_trackers as trackers
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from draftutils.messages import _msg, _wrn, _err
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from draftutils.translate import translate, _tr
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# The module is used to prevent complaints from code checkers (flake8)
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True if Draft_rc.__name__ else False
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class Offset(gui_base_original.Modifier):
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"""Gui Command for the Offset tool."""
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def GetResources(self):
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"""Set icon, menu and tooltip."""
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_tip = ("Offsets of the selected object.\n"
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"It can also create an offset copy of the original object.\n"
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"CTRL to snap, SHIFT to constrain. "
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"Hold ALT and click to create a copy with each click.")
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return {'Pixmap': 'Draft_Offset',
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'Accel': "O, S",
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'MenuText': QT_TRANSLATE_NOOP("Draft_Offset", "Offset"),
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'ToolTip': QT_TRANSLATE_NOOP("Draft_Offset", _tip)}
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def Activated(self):
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"""Execute when the command is called."""
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self.running = False
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super(Offset, self).Activated(name=_tr("Offset"))
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self.ghost = None
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self.linetrack = None
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self.arctrack = None
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if self.ui:
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if not Gui.Selection.getSelection():
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self.ui.selectUi()
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_msg(translate("draft", "Select an object to offset"))
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self.call = \
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self.view.addEventCallback("SoEvent",
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gui_tool_utils.selectObject)
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elif len(Gui.Selection.getSelection()) > 1:
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_wrn(translate("draft", "Offset only works "
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"on one object at a time."))
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else:
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self.proceed()
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def proceed(self):
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"""Proceed with the command if one object was selected."""
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if self.call:
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self.view.removeEventCallback("SoEvent", self.call)
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self.sel = Gui.Selection.getSelection()[0]
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if not self.sel.isDerivedFrom("Part::Feature"):
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_wrn(translate("draft", "Cannot offset this object type"))
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self.finish()
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else:
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self.step = 0
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self.dvec = None
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self.npts = None
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self.constrainSeg = None
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self.ui.offsetUi()
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self.linetrack = trackers.lineTracker()
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self.faces = False
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self.shape = self.sel.Shape
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self.mode = None
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if utils.getType(self.sel) in ("Circle", "Arc"):
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self.ghost = trackers.arcTracker()
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self.mode = "Circle"
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self.center = self.shape.Edges[0].Curve.Center
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self.ghost.setCenter(self.center)
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self.ghost.setStartAngle(math.radians(self.sel.FirstAngle))
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self.ghost.setEndAngle(math.radians(self.sel.LastAngle))
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elif utils.getType(self.sel) == "BSpline":
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self.ghost = trackers.bsplineTracker(points=self.sel.Points)
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self.mode = "BSpline"
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elif utils.getType(self.sel) == "BezCurve":
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_wrn(translate("draft", "Offset of Bezier curves "
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"is currently not supported"))
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self.finish()
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return
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else:
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if len(self.sel.Shape.Edges) == 1:
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import Part
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if isinstance(self.sel.Shape.Edges[0].Curve, Part.Circle):
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self.ghost = trackers.arcTracker()
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self.mode = "Circle"
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self.center = self.shape.Edges[0].Curve.Center
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self.ghost.setCenter(self.center)
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if len(self.sel.Shape.Vertexes) > 1:
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_edge = self.sel.Shape.Edges[0]
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self.ghost.setStartAngle(_edge.FirstParameter)
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self.ghost.setEndAngle(_edge.LastParameter)
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if not self.ghost:
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self.ghost = trackers.wireTracker(self.shape)
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self.mode = "Wire"
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self.call = self.view.addEventCallback("SoEvent", self.action)
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_msg(translate("draft", "Pick distance"))
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if self.planetrack:
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self.planetrack.set(self.shape.Vertexes[0].Point)
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self.running = True
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def action(self, arg):
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"""Handle the 3D scene events.
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This is installed as an EventCallback in the Inventor view.
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Parameters
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----------
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arg: dict
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Dictionary with strings that indicates the type of event received
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from the 3D view.
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"""
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import DraftGeomUtils
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plane = App.DraftWorkingPlane
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if arg["Type"] == "SoKeyboardEvent":
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if arg["Key"] == "ESCAPE":
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self.finish()
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elif arg["Type"] == "SoLocation2Event":
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self.point, ctrlPoint, info = gui_tool_utils.getPoint(self, arg)
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if (gui_tool_utils.hasMod(arg, gui_tool_utils.MODCONSTRAIN)
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and self.constrainSeg):
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dist = DraftGeomUtils.findPerpendicular(self.point,
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self.shape,
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self.constrainSeg[1])
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else:
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dist = DraftGeomUtils.findPerpendicular(self.point,
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self.shape.Edges)
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if dist:
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self.ghost.on()
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if self.mode == "Wire":
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d = dist[0].negative()
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v1 = DraftGeomUtils.getTangent(self.shape.Edges[0],
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self.point)
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v2 = DraftGeomUtils.getTangent(self.shape.Edges[dist[1]],
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self.point)
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a = -DraftVecUtils.angle(v1, v2)
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self.dvec = DraftVecUtils.rotate(d, a, plane.axis)
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occmode = self.ui.occOffset.isChecked()
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_wire = DraftGeomUtils.offsetWire(self.shape,
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self.dvec,
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occ=occmode)
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self.ghost.update(_wire, forceclosed=occmode)
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elif self.mode == "BSpline":
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d = dist[0].negative()
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e = self.shape.Edges[0]
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basetan = DraftGeomUtils.getTangent(e, self.point)
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self.npts = []
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for p in self.sel.Points:
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currtan = DraftGeomUtils.getTangent(e, p)
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a = -DraftVecUtils.angle(currtan, basetan)
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self.dvec = DraftVecUtils.rotate(d, a, plane.axis)
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self.npts.append(p.add(self.dvec))
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self.ghost.update(self.npts)
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elif self.mode == "Circle":
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self.dvec = self.point.sub(self.center).Length
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self.ghost.setRadius(self.dvec)
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self.constrainSeg = dist
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self.linetrack.on()
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self.linetrack.p1(self.point)
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self.linetrack.p2(self.point.add(dist[0]))
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self.ui.setRadiusValue(dist[0].Length, unit="Length")
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else:
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self.dvec = None
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self.ghost.off()
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self.constrainSeg = None
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self.linetrack.off()
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self.ui.radiusValue.setText("off")
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self.ui.radiusValue.setFocus()
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self.ui.radiusValue.selectAll()
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if self.extendedCopy:
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if not gui_tool_utils.hasMod(arg, gui_tool_utils.MODALT):
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self.finish()
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gui_tool_utils.redraw3DView()
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elif arg["Type"] == "SoMouseButtonEvent":
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if (arg["State"] == "DOWN") and (arg["Button"] == "BUTTON1"):
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copymode = False
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occmode = self.ui.occOffset.isChecked()
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if (gui_tool_utils.hasMod(arg, gui_tool_utils.MODALT)
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or self.ui.isCopy.isChecked()):
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copymode = True
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Gui.addModule("Draft")
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if self.npts:
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# _msg("offset:npts= " + str(self.npts))
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_cmd = 'Draft.offset'
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_cmd += '('
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_cmd += 'FreeCAD.ActiveDocument.'
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_cmd += self.sel.Name + ', '
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_cmd += DraftVecUtils.toString(self.npts) + ', '
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_cmd += 'copy=' + str(copymode)
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_cmd += ')'
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_cmd_list = ['offst = ' + _cmd,
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'FreeCAD.ActiveDocument.recompute()']
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self.commit(translate("draft", "Offset"),
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_cmd_list)
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elif self.dvec:
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if isinstance(self.dvec, float):
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delta = str(self.dvec)
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else:
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delta = DraftVecUtils.toString(self.dvec)
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_cmd = 'Draft.offset'
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_cmd += '('
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_cmd += 'FreeCAD.ActiveDocument.'
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_cmd += self.sel.Name + ', '
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_cmd += delta + ', '
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_cmd += 'copy=' + str(copymode) + ', '
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_cmd += 'occ=' + str(occmode)
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_cmd += ')'
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_cmd_list = ['offst = ' + _cmd,
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'FreeCAD.ActiveDocument.recompute()']
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self.commit(translate("draft", "Offset"),
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_cmd_list)
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if gui_tool_utils.hasMod(arg, gui_tool_utils.MODALT):
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self.extendedCopy = True
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else:
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self.finish()
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def finish(self, closed=False):
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"""Finish the offset operation."""
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if self.running:
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if self.linetrack:
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self.linetrack.finalize()
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if self.ghost:
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self.ghost.finalize()
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super(Offset, self).finish()
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def numericRadius(self, rad):
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"""Validate the radius entry field in the user interface.
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This function is called by the toolbar or taskpanel interface
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when a valid radius has been entered in the input field.
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"""
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# print("dvec:", self.dvec)
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# print("rad:", rad)
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if self.dvec:
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if isinstance(self.dvec, float):
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if self.mode == "Circle":
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r1 = self.shape.Edges[0].Curve.Radius
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r2 = self.ghost.getRadius()
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if r2 >= r1:
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rad = r1 + rad
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else:
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rad = r1 - rad
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delta = str(rad)
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else:
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_err("Draft.Offset error: Unhandled case")
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else:
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self.dvec.normalize()
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self.dvec.multiply(rad)
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delta = DraftVecUtils.toString(self.dvec)
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copymode = False
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occmode = self.ui.occOffset.isChecked()
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if self.ui.isCopy.isChecked():
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copymode = True
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Gui.addModule("Draft")
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_cmd = 'Draft.offset'
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_cmd += '('
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_cmd += 'FreeCAD.ActiveDocument.'
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_cmd += self.sel.Name + ', '
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_cmd += delta + ', '
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_cmd += 'copy=' + str(copymode) + ', '
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_cmd += 'occ=' + str(occmode)
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_cmd += ')'
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_cmd_list = ['offst = ' + _cmd,
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'FreeCAD.ActiveDocument.recompute()']
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self.commit(translate("draft", "Offset"),
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_cmd_list)
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self.finish()
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else:
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_err(translate("Draft",
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"Offset direction is not defined. "
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"Please move the mouse on either side "
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"of the object first to indicate a direction"))
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Gui.addCommand('Draft_Offset', Offset())
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