486 lines
22 KiB
Python
486 lines
22 KiB
Python
#***************************************************************************
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#* *
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#* Copyright (c) 2013 *
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#* Yorik van Havre <yorik@uncreated.net> *
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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__="FreeCAD Arch Stairs"
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__author__ = "Yorik van Havre"
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__url__ = "http://www.freecadweb.org"
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import FreeCAD,ArchComponent,ArchCommands,Draft,DraftVecUtils,math
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from FreeCAD import Vector
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if FreeCAD.GuiUp:
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import FreeCADGui
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from PySide import QtCore, QtGui
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from DraftTools import translate
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else:
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def translate(ctxt,txt):
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return txt
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def makeStairs(base=None,length=None,width=None,height=None,steps=None,name=translate("Arch","Stairs")):
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"""makeStairs([base,length,width,height,steps]): creates a Stairs
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objects with given attributes."""
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p = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Arch")
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obj = FreeCAD.ActiveDocument.addObject("Part::FeaturePython",name)
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_Stairs(obj)
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_ViewProviderStairs(obj.ViewObject)
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if base:
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obj.Base = base
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if length:
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obj.Length = length
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else:
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obj.Length = p.GetFloat("StairsLength",4500.0)
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if width:
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obj.Width = width
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else:
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obj.Width = p.GetFloat("StairsWidth",1000.0)
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if height:
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obj.Height = height
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else:
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obj.Height = p.GetFloat("StairsHeight",3000.0)
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if steps:
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obj.NumberOfSteps = steps
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else:
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obj.NumberOfSteps = p.GetInt("StairsSteps",17)
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return obj
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class _CommandStairs:
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"the Arch Stairs command definition"
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def GetResources(self):
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return {'Pixmap' : 'Arch_Stairs',
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'MenuText': QtCore.QT_TRANSLATE_NOOP("Arch_Stairs","Stairs"),
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'Accel': "S, R",
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'ToolTip': QtCore.QT_TRANSLATE_NOOP("Arch_Space","Creates a stairs object")}
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def IsActive(self):
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return not FreeCAD.ActiveDocument is None
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def Activated(self):
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FreeCAD.ActiveDocument.openTransaction(translate("Arch","Create Stairs"))
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FreeCADGui.doCommand("import Arch")
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if len(FreeCADGui.Selection.getSelection()) == 1:
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n = FreeCADGui.Selection.getSelection()[0].Name
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FreeCADGui.doCommand("Arch.makeStairs(base=FreeCAD.ActiveDocument."+n+")")
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else:
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FreeCADGui.doCommand("Arch.makeStairs()")
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FreeCAD.ActiveDocument.commitTransaction()
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FreeCAD.ActiveDocument.recompute()
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class _Stairs(ArchComponent.Component):
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"A stairs object"
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def __init__(self,obj):
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ArchComponent.Component.__init__(self,obj)
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# http://en.wikipedia.org/wiki/Stairs
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# base properties
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obj.addProperty("App::PropertyLength","Length","Arch",translate("Arch","The length of these stairs, if no baseline is defined"))
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obj.addProperty("App::PropertyLength","Width","Arch",translate("Arch","The width of these stairs"))
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obj.addProperty("App::PropertyLength","Height","Arch",translate("Arch","The total height of these stairs"))
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obj.addProperty("App::PropertyEnumeration","Align","Arch",translate("Arch","The alignment of these stairs on their baseline, if applicable"))
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# steps properties
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obj.addProperty("App::PropertyInteger","NumberOfSteps","Steps",translate("Arch","The number of risers in these stairs"))
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obj.addProperty("App::PropertyLength","TreadDepth","Steps",translate("Arch","The depth of the treads of these stairs"))
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obj.addProperty("App::PropertyLength","RiserHeight","Steps",translate("Arch","The height of the risers of these stairs"))
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obj.addProperty("App::PropertyLength","Nosing","Steps",translate("Arch","The size of the nosing"))
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obj.addProperty("App::PropertyLength","TreadThickness","Steps",translate("Arch","The thickness of the treads"))
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obj.addProperty("App::PropertyFloat","BlondelRatio","Steps",translate("Arch","The Blondel ratio, must be between 62 and 64cm or 24.5 and 25.5in"))
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# structural properties
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obj.addProperty("App::PropertyEnumeration","Landings","Structure",translate("Arch","The type of landings of these stairs"))
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obj.addProperty("App::PropertyEnumeration","Winders","Structure",translate("Arch","The type of winders in these stairs"))
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obj.addProperty("App::PropertyEnumeration","Structure","Structure",translate("Arch","The type of structure of these stairs"))
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obj.addProperty("App::PropertyLength","StructureThickness","Structure",translate("Arch","The thickness of the massive structure or of the stringers"))
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obj.addProperty("App::PropertyLength","StringerWidth","Structure",translate("Arch","The width of the stringers"))
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obj.addProperty("App::PropertyLength","StructureOffset","Structure",translate("Arch","The offset between the border of the stairs and the structure"))
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obj.Align = ['Left','Right','Center']
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obj.Landings = ["None","At center","At each corner"]
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obj.Winders = ["None","All","Corners strict","Corners relaxed"]
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obj.Structure = ["None","Massive","One stringer","Two stringers"]
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obj.setEditorMode("TreadDepth",1)
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obj.setEditorMode("RiserHeight",1)
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obj.setEditorMode("BlondelRatio",1)
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self.Type = "Stairs"
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def execute(self,obj):
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"constructs the shape of the stairs"
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import Part
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self.steps = []
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self.pseudosteps = []
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self.structures = []
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pl = obj.Placement
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landings = 0
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# base tests
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if not obj.Width.Value:
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return
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if not obj.Height.Value:
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if not obj.Base:
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return
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if obj.NumberOfSteps < 2:
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return
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if obj.Base:
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if not obj.Base.isDerivedFrom("Part::Feature"):
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return
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if obj.Base.Shape.Solids:
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obj.Shape = obj.Base.Shape.copy()
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obj.Placement = FreeCAD.Placement(obj.Base.Placement).multiply(pl)
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obj.TreadDepth = 0.0
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obj.RiserHeight = 0.0
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return
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if not obj.Base.Shape.Edges:
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return
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if obj.Base.Shape.Faces:
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return
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if (len(obj.Base.Shape.Edges) == 1):
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edge = obj.Base.Shape.Edges[0]
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if isinstance(edge.Curve,Part.Line):
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if obj.Landings == "At center":
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landings = 1
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self.makeStraightStairsWithLanding(obj,edge)
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else:
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self.makeStraightStairs(obj,edge)
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else:
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if obj.Landings == "At center":
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landings = 1
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self.makeCurvedStairsWithLandings(obj,edge)
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else:
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self.makeCurvedStairs(obj,edge)
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else:
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if not obj.Length.Value:
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return
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edge = Part.Line(Vector(0,0,0),Vector(obj.Length.Value,0,0)).toShape()
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if obj.Landings == "At center":
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landings = 1
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self.makeStraightStairsWithLanding(obj,edge)
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else:
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self.makeStraightStairs(obj,edge)
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if self.structures or self.steps:
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shape = Part.makeCompound(self.structures + self.steps)
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shape = self.processSubShapes(obj,shape,pl)
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obj.Shape = shape
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obj.Placement = pl
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elif self.pseudosteps:
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shape = Part.makeCompound(self.pseudosteps)
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obj.Shape = shape
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obj.Placement = pl
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else:
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print "unable to calculate a stairs shape"
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# compute step data
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if obj.NumberOfSteps > 1:
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l = obj.Length.Value
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h = obj.Height.Value
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if obj.Base:
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if obj.Base.isDerivedFrom("Part::Feature"):
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l = obj.Base.Shape.Length
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if obj.Base.Shape.BoundBox.ZLength:
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h = obj.Base.Shape.BoundBox.ZLength
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obj.TreadDepth = float(l-(landings*obj.Width.Value))/(obj.NumberOfSteps-(1+landings))
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obj.RiserHeight = float(h)/obj.NumberOfSteps
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obj.BlondelRatio = obj.RiserHeight.Value*2+obj.TreadDepth.Value
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def align(self,basepoint,align,widthvec):
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"moves a given basepoint according to the alignment"
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if align == "Center":
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basepoint = basepoint.add(DraftVecUtils.scale(widthvec,-0.5))
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elif align == "Right":
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basepoint = basepoint.add(DraftVecUtils.scale(widthvec,-1))
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return basepoint
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def makeStraightLanding(self,obj,edge,numberofsteps=None):
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"builds a landing from a straight edge"
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# general data
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if not numberofsteps:
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numberofsteps = obj.NumberOfSteps
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import Part,DraftGeomUtils
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v = DraftGeomUtils.vec(edge)
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vLength = Vector(v.x,v.y,0)
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vWidth = vWidth = DraftVecUtils.scaleTo(vLength.cross(Vector(0,0,1)),obj.Width.Value)
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vBase = edge.Vertexes[0].Point
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vNose = DraftVecUtils.scaleTo(vLength,-abs(obj.Nosing.Value))
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h = obj.Height.Value
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l = obj.Length.Value
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if obj.Base:
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if obj.Base.isDerivedFrom("Part::Feature"):
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l = obj.Base.Shape.Length
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if obj.Base.Shape.BoundBox.ZLength:
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h = obj.Base.Shape.BoundBox.ZLength
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fLength = float(l-obj.Width.Value)/(numberofsteps-2)
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fHeight = float(h)/numberofsteps
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a = math.atan(fHeight/fLength)
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print "landing data:",fLength,":",fHeight
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# step
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p1 = self.align(vBase,obj.Align,vWidth)
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p1 = p1.add(vNose).add(Vector(0,0,-abs(obj.TreadThickness.Value)))
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p2 = p1.add(DraftVecUtils.neg(vNose)).add(vLength)
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p3 = p2.add(vWidth)
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p4 = p3.add(DraftVecUtils.neg(vLength)).add(vNose)
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step = Part.Face(Part.makePolygon([p1,p2,p3,p4,p1]))
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if obj.TreadThickness.Value:
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step = step.extrude(Vector(0,0,abs(obj.TreadThickness.Value)))
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self.steps.append(step)
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else:
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self.pseudosteps.append(step)
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# structure
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lProfile = []
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struct = None
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p7 = None
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p1 = p1.add(DraftVecUtils.neg(vNose))
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p2 = p1.add(Vector(0,0,-fHeight)).add(Vector(0,0,-obj.StructureThickness.Value/math.cos(a)))
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resheight = p1.sub(p2).Length - obj.StructureThickness.Value
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reslength = resheight / math.tan(a)
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p3 = p2.add(DraftVecUtils.scaleTo(vLength,reslength)).add(Vector(0,0,resheight))
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p6 = p1.add(vLength)
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if obj.TreadThickness.Value:
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p7 = p6.add(Vector(0,0,obj.TreadThickness.Value))
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reslength = fLength + (obj.StructureThickness.Value/math.sin(a)-(fHeight-obj.TreadThickness.Value)/math.tan(a))
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if p7:
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p5 = p7.add(DraftVecUtils.scaleTo(vLength,reslength))
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else:
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p5 = p6.add(DraftVecUtils.scaleTo(vLength,reslength))
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resheight = obj.StructureThickness.Value + obj.TreadThickness.Value
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reslength = resheight/math.tan(a)
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p4 = p5.add(DraftVecUtils.scaleTo(vLength,-reslength)).add(Vector(0,0,-resheight))
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if obj.Structure == "Massive":
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if obj.StructureThickness.Value:
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if p7:
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struct = Part.Face(Part.makePolygon([p1,p2,p3,p4,p5,p7,p6,p1]))
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else:
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struct = Part.Face(Part.makePolygon([p1,p2,p3,p4,p5,p6,p1]))
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evec = vWidth
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if obj.StructureOffset.Value:
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mvec = DraftVecUtils.scaleTo(vWidth,obj.StructureOffset.Value)
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struct.translate(mvec)
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evec = DraftVecUtils.scaleTo(evec,evec.Length-(2*mvec.Length))
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struct = struct.extrude(evec)
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elif obj.Structure in ["One stringer","Two stringers"]:
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if obj.StringerWidth.Value and obj.StructureThickness.Value:
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p1b = p1.add(Vector(0,0,-fHeight))
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reslength = fHeight/math.tan(a)
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p1c = p1.add(DraftVecUtils.scaleTo(vLength,reslength))
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p5b = None
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p5c = None
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if obj.TreadThickness.Value:
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reslength = obj.StructureThickness.Value/math.sin(a)
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p5b = p5.add(DraftVecUtils.scaleTo(vLength,-reslength))
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reslength = obj.TreadThickness.Value/math.tan(a)
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p5c = p5b.add(DraftVecUtils.scaleTo(vLength,-reslength)).add(Vector(0,0,-obj.TreadThickness.Value))
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pol = Part.Face(Part.makePolygon([p1c,p1b,p2,p3,p4,p5,p5b,p5c,p1c]))
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else:
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pol = Part.Face(Part.makePolygon([p1c,p1b,p2,p3,p4,p5,p1c]))
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evec = DraftVecUtils.scaleTo(vWidth,obj.StringerWidth.Value)
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if obj.Structure == "One stringer":
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if obj.StructureOffset.Value:
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mvec = DraftVecUtils.scaleTo(vWidth,obj.StructureOffset.Value)
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else:
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mvec = DraftVecUtils.scaleTo(vWidth,(vWidth.Length/2)-obj.StringerWidth.Value/2)
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pol.translate(mvec)
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struct = pol.extrude(evec)
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elif obj.Structure == "Two stringers":
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pol2 = pol.copy()
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if obj.StructureOffset.Value:
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mvec = DraftVecUtils.scaleTo(vWidth,obj.StructureOffset.Value)
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pol.translate(mvec)
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mvec = vWidth.add(mvec.negative())
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pol2.translate(mvec)
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else:
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pol2.translate(vWidth)
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s1 = pol.extrude(evec)
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s2 = pol2.extrude(evec.negative())
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struct = Part.makeCompound([s1,s2])
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if struct:
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self.structures.append(struct)
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def makeStraightStairs(self,obj,edge,numberofsteps=None):
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"builds a simple, straight staircase from a straight edge"
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# general data
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import Part,DraftGeomUtils
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if not numberofsteps:
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numberofsteps = obj.NumberOfSteps
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v = DraftGeomUtils.vec(edge)
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vLength = DraftVecUtils.scaleTo(v,float(edge.Length)/(numberofsteps-1))
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vLength = Vector(vLength.x,vLength.y,0)
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if round(v.z,Draft.precision()) != 0:
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h = v.z
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else:
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h = obj.Height.Value
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vHeight = Vector(0,0,float(h)/numberofsteps)
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vWidth = DraftVecUtils.scaleTo(vLength.cross(Vector(0,0,1)),obj.Width.Value)
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vBase = edge.Vertexes[0].Point
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vNose = DraftVecUtils.scaleTo(vLength,-abs(obj.Nosing.Value))
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a = math.atan(vHeight.Length/vLength.Length)
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#print "stair data:",vLength.Length,":",vHeight.Length
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# steps
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for i in range(numberofsteps-1):
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p1 = vBase.add((Vector(vLength).multiply(i)).add(Vector(vHeight).multiply(i+1)))
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p1 = self.align(p1,obj.Align,vWidth)
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p1 = p1.add(vNose).add(Vector(0,0,-abs(obj.TreadThickness.Value)))
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p2 = p1.add(DraftVecUtils.neg(vNose)).add(vLength)
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p3 = p2.add(vWidth)
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p4 = p3.add(DraftVecUtils.neg(vLength)).add(vNose)
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step = Part.Face(Part.makePolygon([p1,p2,p3,p4,p1]))
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if obj.TreadThickness.Value:
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step = step.extrude(Vector(0,0,abs(obj.TreadThickness.Value)))
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self.steps.append(step)
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else:
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self.pseudosteps.append(step)
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# structure
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lProfile = []
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struct = None
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if obj.Structure == "Massive":
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if obj.StructureThickness.Value:
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for i in range(numberofsteps-1):
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if not lProfile:
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lProfile.append(vBase)
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last = lProfile[-1]
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if len(lProfile) == 1:
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last = last.add(Vector(0,0,-abs(obj.TreadThickness.Value)))
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lProfile.append(last.add(vHeight))
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lProfile.append(lProfile[-1].add(vLength))
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resHeight1 = obj.StructureThickness.Value/math.cos(a)
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lProfile.append(lProfile[-1].add(Vector(0,0,-resHeight1)))
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resHeight2 = ((numberofsteps-1)*vHeight.Length)-(resHeight1+obj.TreadThickness.Value)
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resLength = (vLength.Length/vHeight.Length)*resHeight2
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h = DraftVecUtils.scaleTo(vLength,-resLength)
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lProfile.append(lProfile[-1].add(Vector(h.x,h.y,-resHeight2)))
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lProfile.append(vBase)
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#print lProfile
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pol = Part.makePolygon(lProfile)
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struct = Part.Face(pol)
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evec = vWidth
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if obj.StructureOffset.Value:
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mvec = DraftVecUtils.scaleTo(vWidth,obj.StructureOffset.Value)
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struct.translate(mvec)
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evec = DraftVecUtils.scaleTo(evec,evec.Length-(2*mvec.Length))
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struct = struct.extrude(evec)
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elif obj.Structure in ["One stringer","Two stringers"]:
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if obj.StringerWidth.Value and obj.StructureThickness.Value:
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hyp = math.sqrt(vHeight.Length**2 + vLength.Length**2)
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l1 = Vector(vLength).multiply(numberofsteps-1)
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h1 = Vector(vHeight).multiply(numberofsteps-1).add(Vector(0,0,-abs(obj.TreadThickness.Value)))
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p1 = vBase.add(l1).add(h1)
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p1 = self.align(p1,obj.Align,vWidth)
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lProfile.append(p1)
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h2 = (obj.StructureThickness.Value/vLength.Length)*hyp
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lProfile.append(lProfile[-1].add(Vector(0,0,-abs(h2))))
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h3 = lProfile[-1].z-vBase.z
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l3 = (h3/vHeight.Length)*vLength.Length
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v3 = DraftVecUtils.scaleTo(vLength,-l3)
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lProfile.append(lProfile[-1].add(Vector(0,0,-abs(h3))).add(v3))
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l4 = (obj.StructureThickness.Value/vHeight.Length)*hyp
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v4 = DraftVecUtils.scaleTo(vLength,-l4)
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lProfile.append(lProfile[-1].add(v4))
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lProfile.append(lProfile[0])
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#print lProfile
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pol = Part.makePolygon(lProfile)
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pol = Part.Face(pol)
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evec = DraftVecUtils.scaleTo(vWidth,obj.StringerWidth.Value)
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if obj.Structure == "One stringer":
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if obj.StructureOffset.Value:
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mvec = DraftVecUtils.scaleTo(vWidth,obj.StructureOffset.Value)
|
|
else:
|
|
mvec = DraftVecUtils.scaleTo(vWidth,(vWidth.Length/2)-obj.StringerWidth.Value/2)
|
|
pol.translate(mvec)
|
|
struct = pol.extrude(evec)
|
|
elif obj.Structure == "Two stringers":
|
|
pol2 = pol.copy()
|
|
if obj.StructureOffset.Value:
|
|
mvec = DraftVecUtils.scaleTo(vWidth,obj.StructureOffset.Value)
|
|
pol.translate(mvec)
|
|
mvec = vWidth.add(mvec.negative())
|
|
pol2.translate(mvec)
|
|
else:
|
|
pol2.translate(vWidth)
|
|
s1 = pol.extrude(evec)
|
|
s2 = pol2.extrude(evec.negative())
|
|
struct = Part.makeCompound([s1,s2])
|
|
if struct:
|
|
self.structures.append(struct)
|
|
|
|
|
|
def makeStraightStairsWithLanding(self,obj,edge):
|
|
|
|
"builds a straight staircase with a landing in the middle"
|
|
|
|
if obj.NumberOfSteps < 3:
|
|
return
|
|
import Part,DraftGeomUtils
|
|
v = DraftGeomUtils.vec(edge)
|
|
reslength = edge.Length - obj.Width.Value
|
|
vLength = DraftVecUtils.scaleTo(v,float(reslength)/(obj.NumberOfSteps-2))
|
|
vLength = Vector(vLength.x,vLength.y,0)
|
|
vWidth = DraftVecUtils.scaleTo(vLength.cross(Vector(0,0,1)),obj.Width.Value)
|
|
p1 = edge.Vertexes[0].Point
|
|
if round(v.z,Draft.precision()) != 0:
|
|
h = v.z
|
|
else:
|
|
h = obj.Height.Value
|
|
hstep = h/obj.NumberOfSteps
|
|
landing = obj.NumberOfSteps/2
|
|
p2 = p1.add(DraftVecUtils.scale(vLength,landing-1).add(Vector(0,0,landing*hstep)))
|
|
p3 = p2.add(DraftVecUtils.scaleTo(vLength,obj.Width.Value))
|
|
p4 = p3.add(DraftVecUtils.scale(vLength,obj.NumberOfSteps-(landing+1)).add(Vector(0,0,(obj.NumberOfSteps-landing)*hstep)))
|
|
self.makeStraightStairs(obj,Part.Line(p1,p2).toShape(),landing)
|
|
self.makeStraightLanding(obj,Part.Line(p2,p3).toShape())
|
|
self.makeStraightStairs(obj,Part.Line(p3,p4).toShape(),obj.NumberOfSteps-landing)
|
|
|
|
|
|
def makeCurvedStairs(self,obj,edge):
|
|
print "Not yet implemented!"
|
|
|
|
def makeCurvedStairsWithLanding(self,obj,edge):
|
|
print "Not yet implemented!"
|
|
|
|
|
|
|
|
class _ViewProviderStairs(ArchComponent.ViewProviderComponent):
|
|
"A View Provider for Stairs"
|
|
def __init__(self,vobj):
|
|
ArchComponent.ViewProviderComponent.__init__(self,vobj)
|
|
|
|
def getIcon(self):
|
|
import Arch_rc
|
|
return ":/icons/Arch_Stairs_Tree.svg"
|
|
|
|
if FreeCAD.GuiUp:
|
|
FreeCADGui.addCommand('Arch_Stairs',_CommandStairs())
|