224 lines
8.8 KiB
Python
224 lines
8.8 KiB
Python
#***************************************************************************
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#* *
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#* Copyright (c) 2015 - Victor Titov (DeepSOIC) *
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#* <vv.titov@gmail.com> *
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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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#* This program 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 this program; 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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from latticeCommon import *
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__title__="BoundingBox module for FreeCAD"
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__author__ = "DeepSOIC"
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__url__ = ""
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# -------------------------- common stuff --------------------------------------------------
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def boundBox2RealBox(bb):
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base = FreeCAD.Vector(bb.XMin, bb.YMin, bb.ZMin)
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OX = FreeCAD.Vector(1, 0, 0)
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OY = FreeCAD.Vector(0, 1, 0)
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OZ = FreeCAD.Vector(0, 0, 1)
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if bb.XLength > DistConfusion and bb.YLength > DistConfusion and bb.ZLength > DistConfusion :
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return Part.makeBox(bb.XLength,bb.YLength,bb.ZLength, base, OZ)
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elif bb.XLength > DistConfusion and bb.YLength > DistConfusion:
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return Part.makePlane(bb.XLength, bb.YLength, base, OZ, OX)
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elif bb.XLength > DistConfusion and bb.ZLength > DistConfusion :
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return Part.makePlane(bb.XLength, bb.ZLength, base, OY*-1, OX)
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elif bb.YLength > DistConfusion and bb.ZLength > DistConfusion :
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return Part.makePlane(bb.YLength, bb.ZLength, base, OX, OY)
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elif bb.XLength > DistConfusion:
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return Part.makeLine(base, base + OX*bb.XLength)
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elif bb.YLength > DistConfusion:
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return Part.makeLine(base, base + OY*bb.YLength)
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elif bb.ZLength > DistConfusion:
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return Part.makeLine(base, base + OZ*bb.ZLength)
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else:
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raise ValueError("Bounding box is zero")
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def scaledBoundBox(bb, scale):
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bb2 = FreeCAD.BoundBox(bb)
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cnt = bb.Center
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bb2.XMin = (bb.XMin - cnt.x)*scale + cnt.x
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bb2.YMin = (bb.YMin - cnt.y)*scale + cnt.y
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bb2.ZMin = (bb.ZMin - cnt.z)*scale + cnt.z
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bb2.XMax = (bb.XMax - cnt.x)*scale + cnt.x
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bb2.YMax = (bb.YMax - cnt.y)*scale + cnt.y
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bb2.ZMax = (bb.ZMax - cnt.z)*scale + cnt.z
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return bb2
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def getPrecisionBoundBox(shape):
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# First, we need a box that for sure contains the object.
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# We use imprecise bound box, scaled up twice. The scaling
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# is required, because the imprecise bound box is often a
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# bit smaller than the shape.
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bb = scaledBoundBox(shape.BoundBox, 2.0)
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# Make sure bound box is not collapsed in any direction,
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# to make sure boundBox2RealBox returns a box, not plane
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# or line
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if bb.XLength < DistConfusion or bb.YLength < DistConfusion or bb.ZLength < DistConfusion:
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bb.enlarge(1.0)
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# Make a boundingbox shape and compute distances from faces
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# of this enlarged bounding box to the actual shape. Shrink
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# the boundbox by the distances.
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bbshape = boundBox2RealBox(bb)
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#FIXME: it may be a good idea to not use hard-coded face indexes
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bb.XMin = bb.XMin + shape.distToShape(bbshape.Faces[0])[0]
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bb.YMin = bb.YMin + shape.distToShape(bbshape.Faces[2])[0]
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bb.ZMin = bb.ZMin + shape.distToShape(bbshape.Faces[4])[0]
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bb.XMax = bb.XMax - shape.distToShape(bbshape.Faces[1])[0]
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bb.YMax = bb.YMax - shape.distToShape(bbshape.Faces[3])[0]
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bb.ZMax = bb.ZMax - shape.distToShape(bbshape.Faces[5])[0]
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return bb
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def makeBoundBox(name):
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'''makeBoundBox(name): makes a BoundBox object.'''
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obj = FreeCAD.ActiveDocument.addObject("Part::FeaturePython",name)
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_BoundBox(obj)
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_ViewProviderBoundBox(obj.ViewObject)
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return obj
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class _BoundBox:
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"The BoundBox object"
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def __init__(self,obj):
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self.Type = "BoundBox"
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obj.addProperty("App::PropertyLink","Base","BoundBox","Object to make boundingbox")
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obj.addProperty("App::PropertyBool","Precision","BoundBox","Use precise alorithm (slower).")
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obj.Precision = True
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obj.addProperty("App::PropertyBool","InLocalSpace","BoundBox","Construct bounding box in local coordinate space of the object, not in global.")
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# read-only properties:
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prop = "Size"
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obj.addProperty("App::PropertyVector",prop,"Info","Diagonal vector of bounding box")
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obj.setEditorMode(prop, 1) # set read-only
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prop = "Center"
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obj.addProperty("App::PropertyVector",prop,"Info","Center of bounding box")
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obj.setEditorMode(prop, 1) # set read-only
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obj.Proxy = self
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def execute(self,obj):
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shape = obj.Base.Shape
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plm = obj.Base.Placement
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if obj.InLocalSpace:
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shape = shape.copy()
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shape.transformShape(plm.inverse().toMatrix())
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bb = None
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if obj.Precision:
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bb = getPrecisionBoundBox(shape)
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else:
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bb = shape.BoundBox
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rst = boundBox2RealBox(bb)
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if obj.InLocalSpace:
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rst.transformShape(plm.toMatrix(), True) #True is for Copy argument
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#Fill in read-only properties
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obj.Size = FreeCAD.Vector(bb.XLength,bb.YLength,bb.ZLength)
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cnt = bb.Center
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if obj.InLocalSpace:
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cnt = plm.multVec(cnt)
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obj.Center = cnt
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obj.Shape = rst
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return
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class _ViewProviderBoundBox:
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"A View Provider for the BoundBox object"
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def __init__(self,vobj):
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vobj.Proxy = self
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vobj.DisplayMode = "Wireframe"
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def getIcon(self):
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return getIconPath("Lattice_BoundBox.svg")
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def attach(self, vobj):
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self.ViewObject = vobj
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self.Object = vobj.Object
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def setEdit(self,vobj,mode):
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return False
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def unsetEdit(self,vobj,mode):
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return
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def __getstate__(self):
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return None
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def __setstate__(self,state):
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return None
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def CreateBoundBox(name):
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FreeCAD.ActiveDocument.openTransaction("Create BoundBox")
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FreeCADGui.addModule("latticeBoundBox")
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FreeCADGui.doCommand("f = latticeBoundBox.makeBoundBox(name='"+name+"')")
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FreeCADGui.doCommand("f.Base = FreeCADGui.Selection.getSelection()[0]")
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FreeCADGui.doCommand("f.Proxy.execute(f)")
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FreeCADGui.doCommand("f.purgeTouched()")
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FreeCADGui.doCommand("f = None")
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FreeCAD.ActiveDocument.commitTransaction()
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# -------------------------- /common stuff --------------------------------------------------
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# -------------------------- Gui command --------------------------------------------------
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class _CommandBoundBox:
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"Command to create BoundBox feature"
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def GetResources(self):
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return {'Pixmap' : getIconPath("Lattice_BoundBox.svg"),
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'MenuText': QtCore.QT_TRANSLATE_NOOP("Lattice_BoundBox","Parametric bounding box"),
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'Accel': "",
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'ToolTip': QtCore.QT_TRANSLATE_NOOP("Lattice_BoundBox","Make a box that precisely fits the object")}
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def Activated(self):
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if len(FreeCADGui.Selection.getSelection()) == 1 :
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CreateBoundBox(name = "BoundBox")
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else:
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mb = QtGui.QMessageBox()
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mb.setIcon(mb.Icon.Warning)
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mb.setText(translate("Lattice_BoundBox", "Select a shape to make a bounding box for, first!", None))
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mb.setWindowTitle(translate("Lattice_BoundBox","Bad selection", None))
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mb.exec_()
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def IsActive(self):
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if FreeCAD.ActiveDocument:
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return True
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else:
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return False
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FreeCADGui.addCommand('Lattice_BoundBox', _CommandBoundBox())
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exportedCommands = ['Lattice_BoundBox']
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# -------------------------- /Gui command --------------------------------------------------
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