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# ***************************************************************************
# * (c) 2009, 2010 Yorik van Havre <yorik@uncreated.net> *
# * (c) 2009, 2010 Ken Cline <cline@frii.com> *
# * (c) 2020 Eliud Cabrera Castillo <e.cabrera-castillo@tum.de> *
# * *
# * This file is part of the FreeCAD CAx development system. *
# * *
# * 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. *
# * *
# * FreeCAD 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 FreeCAD; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
"""Provides GUI tools to create Ellipse objects."""
## @package gui_ellipses
# \ingroup draftguitools
# \brief Provides GUI tools to create Ellipse objects.
## \addtogroup draftguitools
# @{
import math
from PySide.QtCore import QT_TRANSLATE_NOOP
import FreeCAD as App
import FreeCADGui as Gui
import Draft_rc
import DraftVecUtils
from draftguitools import gui_base_original
from draftguitools import gui_tool_utils
from draftguitools import gui_trackers as trackers
from draftutils import params
from draftutils import utils
from draftutils.messages import _err, _toolmsg
from draftutils.translate import translate
# The module is used to prevent complaints from code checkers (flake8)
True if Draft_rc.__name__ else False
class Ellipse(gui_base_original.Creator):
"""Gui command for the Ellipse tool."""
def GetResources(self):
"""Set icon, menu and tooltip."""
return {
"Pixmap": "Draft_Ellipse",
"Accel": "E, L",
"MenuText": QT_TRANSLATE_NOOP("Draft_Ellipse", "Ellipse"),
"ToolTip": QT_TRANSLATE_NOOP("Draft_Ellipse", "Creates an ellipse"),
}
def Activated(self):
"""Execute when the command is called."""
super().Activated(name="Ellipse")
if self.ui:
self.refpoint = None
self.ui.pointUi(title=translate("draft", "Ellipse"), icon="Draft_Ellipse")
self.ui.extUi()
self.call = self.view.addEventCallback("SoEvent", self.action)
self.rect = trackers.rectangleTracker()
_toolmsg(translate("draft", "Pick first point"))
def finish(self, cont=False):
"""Terminate the operation.
Parameters
----------
cont: bool or None, optional
Restart (continue) the command if `True`, or if `None` and
`ui.continueMode` is `True`.
"""
self.end_callbacks(self.call)
if self.ui:
self.rect.off()
self.rect.finalize()
super().finish()
if cont or (cont is None and self.ui and self.ui.continueMode):
self.Activated()
def createObject(self):
"""Create the actual object in the current document."""
p1 = self.node[0]
p3 = self.node[-1]
diagonal = p3.sub(p1)
halfdiag = App.Vector(diagonal).multiply(0.5)
center = p1.add(halfdiag)
p2 = p1.add(DraftVecUtils.project(diagonal, self.wp.v))
p4 = p1.add(DraftVecUtils.project(diagonal, self.wp.u))
r1 = (p4.sub(p1).Length) / 2
r2 = (p2.sub(p1).Length) / 2
try:
# The command to run is built as a series of text strings
# to be committed through the `draftutils.todo.ToDo` class.
rot, sup, pts, fil = self.getStrings()
if r2 > r1:
r1, r2 = r2, r1
m = App.Matrix()
m.rotateZ(math.pi / 2)
rot1 = App.Rotation()
rot1.Q = eval(rot)
rot2 = App.Placement(m)
rot2 = rot2.Rotation
rot = str((rot1.multiply(rot2)).Q)
Gui.addModule("Draft")
if params.get_param("UsePartPrimitives"):
# Insert a Part::Primitive object
_cmd = "FreeCAD.ActiveDocument."
_cmd += 'addObject("Part::Ellipse", "Ellipse")'
_cmd_list = [
"ellipse = " + _cmd,
"ellipse.MajorRadius = " + str(r1),
"ellipse.MinorRadius = " + str(r2),
"pl = FreeCAD.Placement()",
"pl.Rotation.Q= " + rot,
"pl.Base = " + DraftVecUtils.toString(center),
"ellipse.Placement = pl",
"Draft.autogroup(ellipse)",
"Draft.select(ellipse)",
"FreeCAD.ActiveDocument.recompute()",
]
self.commit(translate("draft", "Create Ellipse"), _cmd_list)
else:
# Insert a Draft ellipse
_cmd = "Draft.make_ellipse"
_cmd += "("
_cmd += str(r1) + ", " + str(r2) + ", "
_cmd += "placement=pl, "
_cmd += "face=" + fil + ", "
_cmd += "support=" + sup
_cmd += ")"
_cmd_list = [
"pl = FreeCAD.Placement()",
"pl.Rotation.Q = " + rot,
"pl.Base = " + DraftVecUtils.toString(center),
"ellipse = " + _cmd,
"Draft.autogroup(ellipse)",
"FreeCAD.ActiveDocument.recompute()",
]
self.commit(translate("draft", "Create Ellipse"), _cmd_list)
except Exception:
_err("Draft: Error: Unable to create object.")
self.finish(cont=None)
def action(self, arg):
"""Handle the 3D scene events.
This is installed as an EventCallback in the Inventor view.
Parameters
----------
arg: dict
Dictionary with strings that indicates the type of event received
from the 3D view.
"""
if arg["Type"] == "SoKeyboardEvent":
if arg["Key"] == "ESCAPE":
self.finish()
elif not self.ui.mouse:
pass
elif arg["Type"] == "SoLocation2Event": # mouse movement detection
self.point, ctrlPoint, info = gui_tool_utils.getPoint(self, arg, noTracker=True)
self.rect.update(self.point)
gui_tool_utils.redraw3DView()
elif arg["Type"] == "SoMouseButtonEvent":
if arg["State"] == "DOWN" and arg["Button"] == "BUTTON1":
if arg["Position"] == self.pos:
self.finish(cont=None)
return
if (not self.node) and (not self.support):
gui_tool_utils.getSupport(arg)
self.point, ctrlPoint, info = gui_tool_utils.getPoint(self, arg, noTracker=True)
if self.point:
self.ui.redraw()
self.pos = arg["Position"]
self.appendPoint(self.point)
def numericInput(self, numx, numy, numz):
"""Validate the entry fields in the user interface.
This function is called by the toolbar or taskpanel interface
when valid x, y, and z have been entered in the input fields.
"""
self.point = App.Vector(numx, numy, numz)
self.appendPoint(self.point)
def appendPoint(self, point):
"""Append the point to the list of nodes."""
self.node.append(point)
if len(self.node) > 1:
self.rect.update(point)
self.createObject()
else:
_toolmsg(translate("draft", "Pick opposite point"))
self.ui.setRelative()
self.rect.setorigin(point)
self.rect.on()
if self.planetrack:
self.planetrack.set(point)
self.update_hints()
def get_hints(self):
if len(self.node) == 0:
hints = [
Gui.InputHint(translate("draft", "%1 pick first point"), Gui.UserInput.MouseLeft)
]
else:
hints = [
Gui.InputHint(translate("draft", "%1 pick opposite point"), Gui.UserInput.MouseLeft)
]
return (
hints
+ gui_tool_utils._get_hint_xyz_constrain()
+ gui_tool_utils._get_hint_mod_constrain()
+ gui_tool_utils._get_hint_mod_snap()
)
Gui.addCommand("Draft_Ellipse", Ellipse())
## @}
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