7bd6299525
Renamed Base into ShapeLink Renamed FlattenBaseHierarchy into CompoundTraversal Merged wholeObject property into CompoundTraversal + some other touch-ups
271 lines
13 KiB
Python
271 lines
13 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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__title__="Lattice ArrayFromShape object: creates an array of placements from a compound."
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__author__ = "DeepSOIC"
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__url__ = ""
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import math
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import FreeCAD as App
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import Part
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from lattice2Common import *
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import lattice2BaseFeature
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import lattice2CompoundExplorer as LCE
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import lattice2GeomUtils as Utils
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import lattice2Executer
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# -------------------------- document object --------------------------------------------------
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def makeLatticeArrayFromShape(name):
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'''makeLatticeArrayFromShape(name): makes a LatticeArrayFromShape object.'''
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return lattice2BaseFeature.makeLatticeFeature(name, LatticeArrayFromShape, ViewProviderArrayFromShape)
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class LatticeArrayFromShape(lattice2BaseFeature.LatticeFeature):
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"The Lattice ArrayFromShape object"
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def derivedInit(self,obj):
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self.Type = "LatticeArrayFromShape"
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obj.addProperty("App::PropertyLink","ShapeLink","Lattice ArrayFromShape","Object to generate array of placements from. Should be a compound. If not, single placement will be created.")
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obj.addProperty("App::PropertyEnumeration","CompoundTraversal","Lattice ArrayFromShape","Sets whether first-level compound is traversed, or the whole compounding tree.")
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obj.CompoundTraversal = ["Use as a whole","Direct children only","Recursive"]
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obj.CompoundTraversal = "Direct children only"
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obj.addProperty("App::PropertyEnumeration","TranslateMode","Lattice ArrayFromShape","Method of deriving translation part of output placements")
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obj.TranslateMode = ['(none)', 'parent', 'child', 'child.CenterOfMass','child.CenterOfBoundBox','child.Vertex']
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obj.TranslateMode = 'child'
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obj.addProperty("App::PropertyInteger","TranslateElementIndex","Lattice ArrayFromShape","Index of vertex used for translation calculation.")
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obj.addProperty("App::PropertyEnumeration","OrientMode","Lattice ArrayFromShape","Method of deriving orientation part of output placements")
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obj.OrientMode = ['(none)', 'parent', 'child', 'child.InertiaAxes','child.Edge', 'child.FaceAxis']
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obj.OrientMode = 'child'
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obj.addProperty("App::PropertyInteger","OrientElementIndex","Lattice ArrayFromShape","Index of vertex or face used for orientation calculation. Vertex or face - depends on selected OrientMode")
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def derivedExecute(self,obj):
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# cache stuff
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if lattice2BaseFeature.isObjectLattice(obj.ShapeLink):
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lattice2Executer.warning(obj,"ShapeLink points to a placement/array of placements. The placement/array will be reinterpreted as a generic shape; the results may be unexpected.")
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base = obj.ShapeLink.Shape
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if obj.CompoundTraversal == "Use as a whole":
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baseChildren = [base]
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else:
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if base.ShapeType != 'Compound':
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base = Part.makeCompound([base])
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if obj.CompoundTraversal == "Recursive":
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baseChildren = LCE.AllLeaves(base)
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else:
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baseChildren = base.childShapes()
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#cache mode comparisons, for speed
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posIsNone = obj.TranslateMode == '(none)'
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posIsParent = obj.TranslateMode == 'parent'
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posIsChild = obj.TranslateMode == 'child'
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posIsCenterM = obj.TranslateMode == 'child.CenterOfMass'
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posIsCenterBB = obj.TranslateMode == 'child.CenterOfBoundBox'
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posIsVertex = obj.TranslateMode == 'child.Vertex'
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oriIsNone = obj.OrientMode == '(none)'
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oriIsParent = obj.OrientMode == 'parent'
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oriIsChild = obj.OrientMode == 'child'
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oriIsInertial = obj.OrientMode == 'child.InertiaAxes'
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oriIsEdge = obj.OrientMode == 'child.Edge'
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oriIsFace = obj.OrientMode == 'child.FaceAxis'
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# initialize output containers and loop variables
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outputPlms = [] #list of placements
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# the essence
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for child in baseChildren:
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pos = App.Vector()
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ori = App.Rotation()
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if posIsNone:
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pass
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elif posIsParent:
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pos = base.Placement.Base
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elif posIsChild:
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pos = child.Placement.Base
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elif posIsCenterM:
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leaves = LCE.AllLeaves(child)
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totalW = 0
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weightAttrib = {"Vertex":"",
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"Edge":"Length",
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"Wire":"Length",
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"Face":"Area",
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"Shell":"Area",
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"Solid":"Volume",
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"CompSolid":""}[leaves[0].ShapeType]
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#Center of mass of a compound is a weghted average of centers
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# of mass of individual objects.
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for leaf in leaves:
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w = 1.0 if not weightAttrib else (getattr(leaf, weightAttrib))
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if leaf.ShapeType == 'Vertex':
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leafCM = leaf.Point
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#elif child.ShapeType == 'CompSolid':
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#todo
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else:
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leafCM = leaf.CenterOfMass
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pos += leafCM * w
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totalW += w
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pos = pos * (1.0/totalW)
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elif posIsCenterBB:
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import lattice2BoundBox
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bb = lattice2BoundBox.getPrecisionBoundBox(child)
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pos = bb.Center
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elif posIsVertex:
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v = child.Vertexes[obj.TranslateElementIndex - 1]
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pos = v.Point
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else:
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raise ValueError(obj.Name + ": translation mode not implemented: "+obj.TranslateMode)
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if oriIsNone:
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pass
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elif oriIsParent:
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ori = base.Placement.Rotation
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elif oriIsChild:
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ori = child.Placement.Rotation
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elif oriIsInertial:
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leaves = LCE.AllLeaves(child)
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if len(leaves)>1:
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raise ValueError(obj.Name + ": calculation of principal axes of compounds is not supported yet")
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props = leaves[0].PrincipalProperties
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XAx = props['FirstAxisOfInertia']
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ZAx = props['ThirdAxisOfInertia']
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ori = Utils.makeOrientationFromLocalAxes(ZAx, XAx)
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elif oriIsEdge:
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edge = child.Edges[obj.OrientElementIndex - 1]
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XAx = edge.Curve.tangent(edge.Curve.FirstParameter)[0]
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ori1 = Utils.makeOrientationFromLocalAxes(ZAx= XAx)
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ori2 = Utils.makeOrientationFromLocalAxes(ZAx= App.Vector(1,0,0),XAx= App.Vector(0,0,1))
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ori = ori1.multiply(ori2)
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elif oriIsFace:
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face = child.Faces[obj.OrientElementIndex - 1]
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ZAx = face.Surface.Axis
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else:
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raise ValueError(obj.Name + ": orientation mode not implemented: "+obj.OrientMode)
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plm = App.Placement(pos, ori)
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outputPlms.append(plm)
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return outputPlms
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class ViewProviderArrayFromShape(lattice2BaseFeature.ViewProviderLatticeFeature):
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def getIcon(self):
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return getIconPath('Lattice2_ArrayFromShape.svg') if self.Object.CompoundTraversal == "Use as a whole" == False else getIconPath('Lattice2_PlacementFromShape.svg')
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# -------------------------- /document object --------------------------------------------------
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# -------------------------- Gui command --------------------------------------------------
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def CreateLatticeArrayFromShape(TranslateMode = 'child', OrientMode = 'child', WholeObject = False):
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sel = FreeCADGui.Selection.getSelectionEx()
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if len(sel) != 1:
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raise SelectionError(message= "Please select just one object, not "+str(len(sel)) +".", title= "Bad selection")
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FreeCAD.ActiveDocument.openTransaction("Create LatticeArrayFromShape")
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FreeCADGui.addModule("lattice2ArrayFromShape")
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FreeCADGui.addModule("lattice2Executer")
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FreeCADGui.doCommand("f = lattice2ArrayFromShape.makeLatticeArrayFromShape(name='ArrayFromShape')")
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FreeCADGui.doCommand("f.ShapeLink = App.ActiveDocument."+sel[0].ObjectName)
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if WholeObject:
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FreeCADGui.doCommand("f.CompoundTraversal = 'Use as a whole'")
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FreeCADGui.doCommand("f.ExposePlacement = True")
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of_or_from = "of" if TranslateMode == 'child' and OrientMode == 'child' else "from"
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FreeCADGui.doCommand("f.Label = 'Placement "+of_or_from+" ' + f.ShapeLink.Label")
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else:
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FreeCADGui.doCommand("f.Label = 'Array from ' + f.ShapeLink.Label")
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FreeCADGui.doCommand("for child in f.ViewObject.Proxy.claimChildren():\n"+
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" child.ViewObject.hide()")
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FreeCADGui.doCommand("lattice2Executer.executeFeature(f)")
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FreeCADGui.doCommand("Gui.Selection.addSelection(f)")
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FreeCADGui.doCommand("f = None")
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deselect(sel)
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FreeCAD.ActiveDocument.commitTransaction()
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class _CommandLatticeArrayFromShape:
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"Command to create LatticeArrayFromShape feature"
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def GetResources(self):
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return {'Pixmap' : getIconPath("Lattice2_ArrayFromShape.svg"),
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'MenuText': QtCore.QT_TRANSLATE_NOOP("Lattice2_ArrayFromShape","Array from compound"),
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'Accel': "",
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'ToolTip': QtCore.QT_TRANSLATE_NOOP("Lattice2_ArrayFromShape","Lattice ArrayFromShape: make placements array from shapes in a compound.")}
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def Activated(self):
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try:
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if len(FreeCADGui.Selection.getSelection())==0:
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infoMessage("ArrayFromShape command",
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"Array From Shape command. Creates an array of placements from shapes in a compound.\n\n"
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"Select the object that is a compound, first, then invoke this tool.")
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return
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CreateLatticeArrayFromShape(TranslateMode= 'child.CenterOfMass', OrientMode= 'child')
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except Exception as err:
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msgError(err)
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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('Lattice2_ArrayFromShape', _CommandLatticeArrayFromShape())
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class _CommandLatticePlacementFromShape:
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"Command to create LatticeArrayFromShape feature linking to placement of one shape"
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def GetResources(self):
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return {'Pixmap' : getIconPath("Lattice2_PlacementFromShape.svg"),
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'MenuText': QtCore.QT_TRANSLATE_NOOP("Lattice2_ArrayFromShape","Single Placement: linked to shape"),
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'Accel': "",
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'ToolTip': QtCore.QT_TRANSLATE_NOOP("Lattice2_ArrayFromShape","Lattice PlacementFromShape: make Placement linked to placement of selected object.")}
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def Activated(self):
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try:
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if len(FreeCADGui.Selection.getSelection())==0:
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infoMessage("Single Placement: linked to shape",
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"Single Placement: linked to shape command. Creates a placement linked to a placement of an object.\n\n"
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"Select the object first, then invoke this tool.")
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return
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CreateLatticeArrayFromShape(TranslateMode= 'child', OrientMode= 'child', WholeObject= True)
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except Exception as err:
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msgError(err)
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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('Lattice2_PlacementFromShape', _CommandLatticePlacementFromShape())
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exportedCommands = ['Lattice2_ArrayFromShape'] #Lattice2_PlacementFromShape will be included in lattice2Placement set of commands. I know, it's ugly....
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# -------------------------- /Gui command --------------------------------------------------
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