49e1ff1bcf
Normally the bounding box is taken from `Shape.BoundBox`. Certain objects don't have a `Shape`, like `App::FeaturePythons`, so the bounding box is calculated from `ViewObject.RootNode`.
751 lines
26 KiB
Python
751 lines
26 KiB
Python
# ***************************************************************************
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# * (c) 2009, 2010 *
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# * Yorik van Havre <yorik@uncreated.net>, Ken Cline <cline@frii.com> *
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# * (c) 2019 Eliud Cabrera Castillo <e.cabrera-castillo@tum.de> *
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# * (c) 2020 Carlo Pavan <carlopa@gmail.com> *
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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 utility functions that deal with GUI interactions.
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This module contains auxiliary functions which can be used
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in other modules of the workbench, and which require
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the graphical user interface (GUI), as they access the view providers
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of the objects or the 3D view.
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"""
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## @package gui_utils
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# \ingroup draftutils
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# \brief Provides utility functions that deal with GUI interactions.
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## \addtogroup draftutils
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# @{
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import math
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import os
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import six
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import FreeCAD as App
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import draftutils.utils as utils
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from draftutils.messages import _msg, _wrn, _err
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from draftutils.translate import _tr, translate
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if App.GuiUp:
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import FreeCADGui as Gui
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from pivy import coin
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from PySide import QtGui
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# from PySide import QtSvg # for load_texture
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def get_3d_view():
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"""Return the current 3D view.
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Returns
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-------
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Gui::View3DInventor
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Return the current `ActiveView` in the active document,
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or the first `Gui::View3DInventor` view found.
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Return `None` if the graphical interface is not available.
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"""
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if App.GuiUp:
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v = Gui.ActiveDocument.ActiveView
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if "View3DInventor" in str(type(v)):
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return v
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# print("Debug: Draft: Warning, not working in active view")
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v = Gui.ActiveDocument.mdiViewsOfType("Gui::View3DInventor")
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if v:
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return v[0]
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_wrn(_tr("No graphical interface"))
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return None
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get3DView = get_3d_view
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def autogroup(obj):
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"""Add a given object to the defined Draft autogroup, if applicable.
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This function only works if the graphical interface is available.
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It checks that the `App.draftToolBar` class is available,
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which contains the group to use to automatically store
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new created objects.
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Originally, it worked with standard groups (`App::DocumentObjectGroup`),
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and Arch Workbench containers like `'Site'`, `'Building'`, `'Floor'`,
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and `'BuildingPart'`.
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Now it works with Draft Layers.
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Parameters
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----------
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obj: App::DocumentObject
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Any type of object that will be stored in the group.
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"""
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# check for required conditions for autogroup to work
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if not App.GuiUp:
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return
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if not hasattr(Gui,"draftToolBar"):
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return
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if not hasattr(Gui.draftToolBar,"autogroup"):
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return
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if Gui.draftToolBar.isConstructionMode():
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return
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# autogroup code
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if Gui.draftToolBar.autogroup is not None:
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active_group = App.ActiveDocument.getObject(Gui.draftToolBar.autogroup)
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if active_group:
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found = False
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for o in active_group.Group:
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if o.Name == obj.Name:
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found = True
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if not found:
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gr = active_group.Group
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gr.append(obj)
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active_group.Group = gr
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else:
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if Gui.ActiveDocument.ActiveView.getActiveObject("Arch"):
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# add object to active Arch Container
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Gui.ActiveDocument.ActiveView.getActiveObject("Arch").addObject(obj)
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elif Gui.ActiveDocument.ActiveView.getActiveObject("part", False) is not None:
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# add object to active part and change it's placement accordingly
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# so object does not jump to different position, works with App::Link
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# if not scaled. Modified accordingly to realthunder suggestions
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p, parent, sub = Gui.ActiveDocument.ActiveView.getActiveObject("part", False)
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matrix = parent.getSubObject(sub, retType=4)
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if matrix.hasScale() == 1:
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err = translate("Draft",
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"Unable to insert new object into "
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"a scaled part")
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App.Console.PrintMessage(err)
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return
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inverse_placement = App.Placement(matrix.inverse())
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if utils.get_type(obj) == 'Point':
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point_vector = App.Vector(obj.X, obj.Y, obj.Z)
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real_point = inverse_placement.multVec(point_vector)
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obj.X = real_point.x
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obj.Y = real_point.y
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obj.Z = real_point.z
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elif utils.get_type(obj) in ["Dimension", "LinearDimension"]:
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obj.Start = inverse_placement.multVec(obj.Start)
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obj.End = inverse_placement.multVec(obj.End)
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obj.Dimline = inverse_placement.multVec(obj.Dimline)
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obj.Normal = inverse_placement.Rotation.multVec(obj.Normal)
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obj.Direction = inverse_placement.Rotation.multVec(obj.Direction)
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elif utils.get_type(obj) in ["Label"]:
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obj.Placement = App.Placement(inverse_placement.multiply(obj.Placement))
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obj.TargetPoint = inverse_placement.multVec(obj.TargetPoint)
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elif hasattr(obj,"Placement"):
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# every object that have a placement is processed here
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obj.Placement = App.Placement(inverse_placement.multiply(obj.Placement))
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p.addObject(obj)
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def dim_symbol(symbol=None, invert=False):
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"""Return the specified dimension symbol.
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Parameters
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----------
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symbol: int, optional
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It defaults to `None`, in which it gets the value from the parameter
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database, `get_param("dimsymbol", 0)`.
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A numerical value defines different markers
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* 0, `SoSphere`
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* 1, `SoMarkerSet` with a circle
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* 2, `SoSeparator` with a `soCone`
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* 3, `SoSeparator` with a `SoFaceSet`
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* 4, `SoSeparator` with a `SoLineSet`, calling `dim_dash`
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* Otherwise, `SoSphere`
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invert: bool, optional
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It defaults to `False`.
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If it is `True` and `symbol=2`, the cone will be rotated
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-90 degrees around the Z axis, otherwise the rotation is positive,
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+90 degrees.
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Returns
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-------
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Coin.SoNode
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A `Coin.SoSphere`, or `Coin.SoMarkerSet` (circle),
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or `Coin.SoSeparator` (cone, face, line)
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that will be used as a dimension symbol.
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"""
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if symbol is None:
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symbol = utils.get_param("dimsymbol", 0)
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if symbol == 0:
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# marker = coin.SoMarkerSet()
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# marker.markerIndex = 80
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# Returning a sphere means that the bounding box will
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# be 3-dimensional; a marker will always be planar seen from any
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# orientation but it currently doesn't work correctly
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marker = coin.SoSphere()
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return marker
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elif symbol == 1:
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marker = coin.SoMarkerSet()
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# Should be the same as
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# marker.markerIndex = 10
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marker.markerIndex = Gui.getMarkerIndex("circle", 9)
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return marker
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elif symbol == 2:
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marker = coin.SoSeparator()
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t = coin.SoTransform()
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t.translation.setValue((0, -2, 0))
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t.center.setValue((0, 2, 0))
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if invert:
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t.rotation.setValue(coin.SbVec3f((0, 0, 1)), -math.pi/2)
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else:
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t.rotation.setValue(coin.SbVec3f((0, 0, 1)), math.pi/2)
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c = coin.SoCone()
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c.height.setValue(4)
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marker.addChild(t)
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marker.addChild(c)
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return marker
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elif symbol == 3:
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marker = coin.SoSeparator()
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c = coin.SoCoordinate3()
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c.point.setValues([(-1, -2, 0), (0, 2, 0),
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(1, 2, 0), (0, -2, 0)])
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f = coin.SoFaceSet()
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marker.addChild(c)
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marker.addChild(f)
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return marker
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elif symbol == 4:
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return dimDash((-1.5, -1.5, 0), (1.5, 1.5, 0))
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else:
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_wrn(_tr("Symbol not implemented. Use a default symbol."))
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return coin.SoSphere()
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dimSymbol = dim_symbol
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def dim_dash(p1, p2):
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"""Return a SoSeparator with a line used to make dimension dashes.
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It is used by `dim_symbol` to create line end symbols
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like `'Tick-2'`, `'DimOvershoot'`, and `'ExtOvershoot'` dashes.
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Parameters
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----------
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p1: tuple of three floats or Base::Vector3
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A point to define a line vertex.
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p2: tuple of three floats or Base::Vector3
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A point to define a line vertex.
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Returns
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-------
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Coin.SoSeparator
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A Coin object with a `SoLineSet` created from `p1` and `p2`
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as vertices.
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"""
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dash = coin.SoSeparator()
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v = coin.SoVertexProperty()
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v.vertex.set1Value(0, p1)
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v.vertex.set1Value(1, p2)
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line = coin.SoLineSet()
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line.vertexProperty = v
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dash.addChild(line)
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return dash
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dimDash = dim_dash
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def remove_hidden(objectslist):
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"""Return only the visible objects in the list.
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This function only works if the graphical interface is available
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as the `Visibility` attribute is a property of the view provider
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(`obj.ViewObject`).
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Parameters
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----------
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objectslist: list of App::DocumentObject
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List of any type of object.
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Returns
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-------
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list
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Return a copy of the input list without those objects
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for which `obj.ViewObject.Visibility` is `False`.
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If the graphical interface is not loaded
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the returned list is just a copy of the input list.
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"""
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newlist = objectslist[:]
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for obj in objectslist:
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if obj.ViewObject:
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if not obj.ViewObject.isVisible():
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newlist.remove(obj)
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_msg(_tr("Visibility off; removed from list: ") + obj.Label)
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return newlist
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removeHidden = remove_hidden
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def format_object(target, origin=None):
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"""Apply visual properties from the Draft toolbar or another object.
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This function only works if the graphical interface is available
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as the visual properties are attributes of the view provider
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(`obj.ViewObject`).
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Parameters
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----------
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target: App::DocumentObject
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Any type of scripted object.
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This object will adopt the applicable visual properties,
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`FontSize`, `TextColor`, `LineWidth`, `PointColor`, `LineColor`,
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and `ShapeColor`, defined in the Draft toolbar
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(`Gui.draftToolBar`) or will adopt
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the properties from the `origin` object.
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The `target` is also placed in the construction group
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if the construction mode in the Draft toolbar is active.
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origin: App::DocumentObject, optional
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It defaults to `None`.
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If it exists, it will provide the visual properties to assign
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to `target`, with the exception of `BoundingBox`, `Proxy`,
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`RootNode` and `Visibility`.
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"""
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if not target:
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return
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obrep = target.ViewObject
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if not obrep:
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return
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ui = None
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if App.GuiUp:
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if hasattr(Gui, "draftToolBar"):
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ui = Gui.draftToolBar
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if ui:
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doc = App.ActiveDocument
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if ui.isConstructionMode():
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col = fcol = ui.getDefaultColor("constr")
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gname = utils.get_param("constructiongroupname", "Construction")
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grp = doc.getObject(gname)
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if not grp:
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grp = doc.addObject("App::DocumentObjectGroup", gname)
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grp.addObject(target)
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if hasattr(obrep, "Transparency"):
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obrep.Transparency = 80
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else:
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col = ui.getDefaultColor("ui")
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fcol = ui.getDefaultColor("face")
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col = (float(col[0]), float(col[1]), float(col[2]), 0.0)
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fcol = (float(fcol[0]), float(fcol[1]), float(fcol[2]), 0.0)
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lw = ui.linewidth
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fs = ui.fontsize
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if not origin or not hasattr(origin, 'ViewObject'):
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if "FontSize" in obrep.PropertiesList:
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obrep.FontSize = fs
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if "TextSize" in obrep.PropertiesList:
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obrep.TextSize = fs
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if "TextColor" in obrep.PropertiesList:
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obrep.TextColor = col
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if "LineWidth" in obrep.PropertiesList:
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obrep.LineWidth = lw
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if "PointColor" in obrep.PropertiesList:
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obrep.PointColor = col
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if "LineColor" in obrep.PropertiesList:
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obrep.LineColor = col
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if "ShapeColor" in obrep.PropertiesList:
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obrep.ShapeColor = fcol
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else:
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matchrep = origin.ViewObject
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for p in matchrep.PropertiesList:
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if p not in ("DisplayMode", "BoundingBox",
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"Proxy", "RootNode", "Visibility"):
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if p in obrep.PropertiesList:
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if not obrep.getEditorMode(p):
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if hasattr(getattr(matchrep, p), "Value"):
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val = getattr(matchrep, p).Value
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else:
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val = getattr(matchrep, p)
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try:
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setattr(obrep, p, val)
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except Exception:
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pass
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if matchrep.DisplayMode in obrep.listDisplayModes():
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obrep.DisplayMode = matchrep.DisplayMode
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if (hasattr(matchrep, "DiffuseColor")
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and hasattr(obrep, "DiffuseColor")):
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obrep.DiffuseColor = matchrep.DiffuseColor
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formatObject = format_object
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def get_selection(gui=App.GuiUp):
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"""Return the current selected objects.
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This function only works if the graphical interface is available
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as the selection module only works on the 3D view.
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It wraps around `Gui.Selection.getSelection`
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Parameters
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----------
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gui: bool, optional
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It defaults to the value of `App.GuiUp`, which is `True`
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when the interface exists, and `False` otherwise.
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This value can be set to `False` to simulate
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when the interface is not available.
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Returns
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-------
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list of App::DocumentObject
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Returns a list of objects in the current selection.
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It can be an empty list if no object is selected.
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If the interface is not available, it returns `None`.
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"""
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if gui:
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return Gui.Selection.getSelection()
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return None
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getSelection = get_selection
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def get_selection_ex(gui=App.GuiUp):
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"""Return the current selected objects together with their subelements.
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This function only works if the graphical interface is available
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as the selection module only works on the 3D view.
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It wraps around `Gui.Selection.getSelectionEx`
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Parameters
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----------
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gui: bool, optional
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It defaults to the value of `App.GuiUp`, which is `True`
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when the interface exists, and `False` otherwise.
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This value can be set to `False` to simulate
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when the interface is not available.
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Returns
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-------
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list of Gui::SelectionObject
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Returns a list of `Gui::SelectionObject` in the current selection.
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It can be an empty list if no object is selected.
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If the interface is not available, it returns `None`.
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Selection objects
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-----------------
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One `Gui::SelectionObject` has attributes that indicate which specific
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subelements, that is, vertices, wires, and faces, were selected.
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This can be useful to operate on the subelements themselves.
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If `G` is a `Gui::SelectionObject`
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* `G.Object` is the selected object
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* `G.ObjectName` is the name of the selected object
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* `G.HasSubObjects` is `True` if there are subelements in the selection
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* `G.SubObjects` is a tuple of the subelements' shapes
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* `G.SubElementNames` is a tuple of the subelements' names
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`SubObjects` and `SubElementNames` should be empty tuples
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if `HasSubObjects` is `False`.
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"""
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if gui:
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return Gui.Selection.getSelectionEx()
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return None
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getSelectionEx = get_selection_ex
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def select(objs=None, gui=App.GuiUp):
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"""Unselects everything and selects only the given list of objects.
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This function only works if the graphical interface is available
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as the selection module only works on the 3D view.
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Parameters
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----------
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objs: list of App::DocumentObject, optional
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It defaults to `None`.
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Any type of scripted object.
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It may be a list of objects or a single object.
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gui: bool, optional
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It defaults to the value of `App.GuiUp`, which is `True`
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when the interface exists, and `False` otherwise.
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This value can be set to `False` to simulate
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when the interface is not available.
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"""
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if gui:
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Gui.Selection.clearSelection()
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if objs:
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if not isinstance(objs, list):
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objs = [objs]
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for obj in objs:
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if obj:
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Gui.Selection.addSelection(obj)
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def load_texture(filename, size=None, gui=App.GuiUp):
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"""Return a Coin.SoSFImage to use as a texture for a 2D plane.
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This function only works if the graphical interface is available
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as the visual properties that can be applied to a shape
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are attributes of the view provider (`obj.ViewObject`).
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Parameters
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----------
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filename: str
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A path to a pixel image file (PNG) that can be used as a texture
|
|
on the face of an object.
|
|
|
|
size: tuple of two int, or a single int, optional
|
|
It defaults to `None`.
|
|
If a tuple is given, the two values define the width and height
|
|
in pixels to which the loaded image will be scaled.
|
|
If it is a single value, it is used for both dimensions.
|
|
|
|
If it is `None`, the size will be determined from the `QImage`
|
|
created from `filename`.
|
|
|
|
CURRENTLY the input `size` parameter IS NOT USED.
|
|
It always uses the `QImage` to determine this information.
|
|
|
|
gui: bool, optional
|
|
It defaults to the value of `App.GuiUp`, which is `True`
|
|
when the interface exists, and `False` otherwise.
|
|
|
|
This value can be set to `False` to simulate
|
|
when the interface is not available.
|
|
|
|
Returns
|
|
-------
|
|
coin.SoSFImage
|
|
An image object with the appropriate size, number of components
|
|
(grayscale, grayscale and transparency, color,
|
|
color and transparency), and byte data.
|
|
|
|
It returns `None` if the interface is not available,
|
|
or if there is a problem creating the image.
|
|
"""
|
|
if gui:
|
|
# from pivy import coin
|
|
# from PySide import QtGui, QtSvg
|
|
try:
|
|
p = QtGui.QImage(filename)
|
|
|
|
if p.isNull():
|
|
_wrn("load_texture: " + _tr("image is Null"))
|
|
|
|
if not os.path.exists(filename):
|
|
raise FileNotFoundError(-1,
|
|
_tr("filename does not exist "
|
|
"on the system or "
|
|
"on the resource file"),
|
|
filename)
|
|
|
|
# This is buggy so it was de-activated.
|
|
#
|
|
# TODO: allow SVGs to use resolutions
|
|
# if size and (".svg" in filename.lower()):
|
|
# # this is a pattern, not a texture
|
|
# if isinstance(size, int):
|
|
# size = (size, size)
|
|
# svgr = QtSvg.QSvgRenderer(filename)
|
|
# p = QtGui.QImage(size[0], size[1],
|
|
# QtGui.QImage.Format_ARGB32)
|
|
# pa = QtGui.QPainter()
|
|
# pa.begin(p)
|
|
# svgr.render(pa)
|
|
# pa.end()
|
|
# else:
|
|
# p = QtGui.QImage(filename)
|
|
size = coin.SbVec2s(p.width(), p.height())
|
|
buffersize = p.byteCount()
|
|
width = size[0]
|
|
height = size[1]
|
|
numcomponents = int(float(buffersize) / (width * height))
|
|
|
|
img = coin.SoSFImage()
|
|
byteList = []
|
|
# isPy2 = sys.version_info.major < 3
|
|
isPy2 = six.PY2
|
|
|
|
# The SoSFImage needs to be filled with bytes.
|
|
# The pixel information is converted into a Qt color, gray,
|
|
# red, green, blue, or transparency (alpha),
|
|
# depending on the input image.
|
|
#
|
|
# If Python 2 is used, the color is turned into a character,
|
|
# which is of type 'byte', and added to the byte list.
|
|
# If Python 3 is used, characters are unicode strings,
|
|
# so they need to be encoded into 'latin-1'
|
|
# to produce the correct bytes for the list.
|
|
for y in range(height):
|
|
# line = width*numcomponents*(height-(y));
|
|
for x in range(width):
|
|
rgb = p.pixel(x, y)
|
|
if numcomponents == 1 or numcomponents == 2:
|
|
gray = chr(QtGui.qGray(rgb))
|
|
if isPy2:
|
|
byteList.append(gray)
|
|
else:
|
|
byteList.append(gray.encode('latin-1'))
|
|
|
|
if numcomponents == 2:
|
|
alpha = chr(QtGui.qAlpha(rgb))
|
|
if isPy2:
|
|
byteList.append(alpha)
|
|
else:
|
|
byteList.append(alpha.encode('latin-1'))
|
|
elif numcomponents == 3 or numcomponents == 4:
|
|
red = chr(QtGui.qRed(rgb))
|
|
green = chr(QtGui.qGreen(rgb))
|
|
blue = chr(QtGui.qBlue(rgb))
|
|
|
|
if isPy2:
|
|
byteList.append(red)
|
|
byteList.append(green)
|
|
byteList.append(blue)
|
|
else:
|
|
byteList.append(red.encode('latin-1'))
|
|
byteList.append(green.encode('latin-1'))
|
|
byteList.append(blue.encode('latin-1'))
|
|
|
|
if numcomponents == 4:
|
|
alpha = chr(QtGui.qAlpha(rgb))
|
|
if isPy2:
|
|
byteList.append(alpha)
|
|
else:
|
|
byteList.append(alpha.encode('latin-1'))
|
|
# line += numcomponents
|
|
|
|
_bytes = b"".join(byteList)
|
|
img.setValue(size, numcomponents, _bytes)
|
|
except FileNotFoundError as exc:
|
|
_wrn("load_texture: {0}, {1}".format(exc.strerror,
|
|
exc.filename))
|
|
return None
|
|
except Exception as exc:
|
|
_wrn(str(exc))
|
|
_wrn("load_texture: " + _tr("unable to load texture"))
|
|
return None
|
|
else:
|
|
return img
|
|
return None
|
|
|
|
|
|
loadTexture = load_texture
|
|
|
|
|
|
def migrate_text_display_mode(obj_type="Text", mode="3D text", doc=None):
|
|
"""Migrate the display mode of objects of certain type."""
|
|
if not doc:
|
|
doc = App.activeDocument()
|
|
|
|
for obj in doc.Objects:
|
|
if utils.get_type(obj) == obj_type:
|
|
obj.ViewObject.DisplayMode = mode
|
|
|
|
|
|
def get_bbox(obj, debug=False):
|
|
"""Return a BoundBox from any object that has a Coin RootNode.
|
|
|
|
Normally the bounding box of an object can be taken
|
|
from its `Part::TopoShape`.
|
|
::
|
|
>>> print(obj.Shape.BoundBox)
|
|
|
|
However, for objects without a `Shape`, such as those
|
|
derived from `App::FeaturePython` like `Draft Text` and `Draft Dimension`,
|
|
the bounding box can be calculated from the `RootNode` of the viewprovider.
|
|
|
|
Parameters
|
|
----------
|
|
obj: App::DocumentObject
|
|
Any object that has a `ViewObject.RootNode`.
|
|
|
|
Returns
|
|
-------
|
|
Base::BoundBox
|
|
It returns a `BoundBox` object which has information like
|
|
minimum and maximum values of X, Y, and Z, as well as bounding box
|
|
center.
|
|
|
|
None
|
|
If there is a problem it will return `None`.
|
|
"""
|
|
_name = "get_bbox"
|
|
utils.print_header(_name, "Bounding box", debug=debug)
|
|
|
|
found, doc = utils.find_doc(App.activeDocument())
|
|
if not found:
|
|
_err(_tr("No active document. Aborting."))
|
|
return None
|
|
|
|
if isinstance(obj, str):
|
|
obj_str = obj
|
|
|
|
found, obj = utils.find_object(obj, doc)
|
|
if not found:
|
|
_msg("obj: {}".format(obj_str))
|
|
_err(_tr("Wrong input: object not in document."))
|
|
return None
|
|
|
|
if debug:
|
|
_msg("obj: {}".format(obj.Label))
|
|
|
|
if (not hasattr(obj, "ViewObject")
|
|
or not obj.ViewObject
|
|
or not hasattr(obj.ViewObject, "RootNode")):
|
|
_err(_tr("Does not have 'ViewObject.RootNode'."))
|
|
|
|
# For Draft Dimensions
|
|
# node = obj.ViewObject.Proxy.node
|
|
node = obj.ViewObject.RootNode
|
|
|
|
view = Gui.ActiveDocument.ActiveView
|
|
region = view.getViewer().getSoRenderManager().getViewportRegion()
|
|
action = coin.SoGetBoundingBoxAction(region)
|
|
|
|
node.getBoundingBox(action)
|
|
bb = action.getBoundingBox()
|
|
|
|
# xlength, ylength, zlength = bb.getSize().getValue()
|
|
xmin, ymin, zmin = bb.getMin().getValue()
|
|
xmax, ymax, zmax = bb.getMax().getValue()
|
|
|
|
return App.BoundBox(xmin, ymin, zmin, xmax, ymax, zmax)
|
|
|
|
## @}
|