def derivedExecute(self,obj):
# cache stuff
if latticeBaseFeature.isObjectLattice(obj.Base):
latticeExecuter.warning(obj,"Base is a lattice object. Since a non-lattice object is required by arrayFromShape tool, the results may be unexpected.")
base = obj.Base.Shape
if obj.WholeObject:
baseChildren = [base]
#if obj.FlattenBaseHierarchy:
# latticeExecuter.warning(obj, "FlattenBaseHierarchy is ignored because WholeObject is set to True")
else:
if base.ShapeType != 'Compound':
base = Part.makeCompound([base])
if obj.FlattenBaseHierarchy:
baseChildren = LCE.AllLeaves(base)
else:
baseChildren = base.childShapes()
#cache mode comparisons, for speed
posIsNone = obj.TranslateMode == '(none)'
posIsBase = obj.TranslateMode == 'base'
posIsChild = obj.TranslateMode == 'child'
posIsCenterM = obj.TranslateMode == 'child.CenterOfMass'
posIsCenterBB = obj.TranslateMode == 'child.CenterOfBoundBox'
posIsVertex = obj.TranslateMode == 'child.Vertex'
oriIsNone = obj.OrientMode == '(none)'
oriIsBase = obj.OrientMode == 'base'
oriIsChild = obj.OrientMode == 'child'
oriIsInertial = obj.OrientMode == 'child.InertiaAxes'
oriIsEdge = obj.OrientMode == 'child.Edge'
oriIsFace = obj.OrientMode == 'child.FaceAxis'
# initialize output containers and loop variables
outputPlms = [] #list of placements
# the essence
for child in baseChildren:
pos = App.Vector()
ori = App.Rotation()
if posIsNone:
pass
elif posIsBase:
pos = base.Placement.Base
elif posIsChild:
pos = child.Placement.Base
elif posIsCenterM:
leaves = LCE.AllLeaves(child)
totalW = 0
weightAttrib = {"Vertex":"",
"Edge":"Length",
"Wire":"Length",
"Face":"Area",
"Shell":"Area",
"Solid":"Volume",
"CompSolid":""}[leaves[0].ShapeType]
#Center of mass of a compound is a weghted average of centers
# of mass of individual objects.
for leaf in leaves:
w = 1.0 if not weightAttrib else (getattr(leaf, weightAttrib))
if leaf.ShapeType == 'Vertex':
leafCM = leaf.Point
#elif child.ShapeType == 'CompSolid':
#todo
else:
leafCM = leaf.CenterOfMass
pos += leafCM * w
totalW += w
pos = pos * (1.0/totalW)
elif posIsCenterBB:
import latticeBoundBox
bb = latticeBoundBox.getPrecisionBoundBox(child)
pos = bb.Center
elif posIsVertex:
v = child.Vertexes[obj.TranslateElementIndex - 1]
pos = v.Point
else:
raise ValueError("latticePolarArrayFromShape: translation mode not implemented: "+obj.TranslateMode)
if oriIsNone:
pass
elif oriIsBase:
ori = base.Placement.Rotation
elif oriIsChild:
ori = child.Placement.Rotation
elif oriIsInertial:
leaves = LCE.AllLeaves(child)
if len(leaves)>1:
raise ValueError("latticePolarArrayFromShape: calculation of principal axes of compounds is not supported yet")
props = leaves[0].PrincipalProperties
XAx = props['FirstAxisOfInertia']
ZAx = props['ThirdAxisOfInertia']
ori = Utils.makeOrientationFromLocalAxes(ZAx, XAx)
elif oriIsEdge:
edge = child.Edges[obj.OrientElementIndex - 1]
XAx = edge.Curve.tangent(edge.Curve.FirstParameter)[0]
ori1 = Utils.makeOrientationFromLocalAxes(ZAx= XAx)
ori2 = Utils.makeOrientationFromLocalAxes(ZAx= App.Vector(1,0,0),XAx= App.Vector(0,0,1))
ori = ori1.multiply(ori2)
elif oriIsFace:
face = child.Faces[obj.OrientElementIndex - 1]
ZAx = face.Surface.Axis
else:
raise ValueError("latticePolarArrayFromShape: rientation mode not implemented: "+obj.OrientMode)
plm = App.Placement(pos, ori)
outputPlms.append(plm)
return outputPlms
def execute(self,obj):
nOfStrings = len(obj.Strings)
lattice = obj.ArrayLink
if lattice is None:
plms = [App.Placement() for i in range(0,nOfStrings)]
else:
if not latticeBaseFeature.isObjectLattice(lattice):
latticeExecuter.warning(obj,"ShapeString's link to array must point to a lattice. It points to a generic shape. Results may be unexpected.")
leaves = LCE.AllLeaves(lattice.Shape)
plms = [leaf.Placement for leaf in leaves]
#update foolObj's properties
for (proptype, propname, group, hint) in self.foolObj.properties:
if propname != "String": #ignore "String", that will be taken care of in the following loop
setattr(self.foolObj, propname, getattr(obj, propname))
self.foolObj.FontFile = findFont(obj.FontFile)
obj.FullPathToFont = self.foolObj.FontFile
shapes = []
for i in range( 0 , min(len(plms),len(obj.Strings)) ):
if len(obj.Strings[i]) > 0:
#generate shapestring using Draft
self.foolObj.String = obj.Strings[i]
self.foolObj.Shape = None
self.draft_shape_string.execute(self.foolObj)
shape = self.foolObj.Shape
#calculate alignment point
if obj.XAlign == 'None' and obj.YAlign == 'None':
pass #need not calculate boundbox
else:
if obj.AlignPrecisionBoundBox:
bb = getPrecisionBoundBox(shape)
else:
bb = shape.BoundBox
alignPnt = App.Vector()
if obj.XAlign == 'Left':
alignPnt.x = bb.XMin
elif obj.XAlign == 'Right':
alignPnt.x = bb.XMax
elif obj.XAlign == 'Middle':
alignPnt.x = bb.Center.x
if obj.YAlign == 'Bottom':
alignPnt.y = bb.YMin
elif obj.YAlign == 'Top':
alignPnt.y = bb.YMax
elif obj.YAlign == 'Middle':
alignPnt.y = bb.Center.y
#Apply alignment
shape.Placement = App.Placement(alignPnt*(-1.0), App.Rotation()).multiply(shape.Placement)
#Apply placement from array
shape.Placement = plms[i].multiply(shape.Placement)
shapes.append(shape.copy())
if len(shapes) == 0:
scale = 1.0
if lattice is not None:
scale = lattice.Shape.BoundBox.DiagonalLength/math.sqrt(3)/math.sqrt(len(shps))
if scale < DistConfusion * 100:
scale = 1.0
obj.Shape = markers.getNullShapeShape(scale)
raise ValueError('No strings were converted into shapes') #Feeding empty compounds to FreeCAD seems to cause rendering issues, otherwise it would have been a good idea to output nothing.
obj.Shape = Part.makeCompound(shapes)
def execute(self,obj):
nOfStrings = len(obj.Strings)
lattice = obj.ArrayLink
if lattice is None:
plms = [App.Placement() for i in range(0,nOfStrings)]
else:
if not latticeBaseFeature.isObjectLattice(lattice):
latticeExecuter.warning(obj,"ShapeString's link to array must point to a lattice. It points to a generic shape. Results may be unexpected.")
leaves = LCE.AllLeaves(lattice.Shape)
plms = [leaf.Placement for leaf in leaves]
#update foolObj's properties
self.makeFoolObj(obj) #make sure we have one - fixes defunct Lattice ShapeString after save-load
for (proptype, propname, group, hint) in self.foolObj.properties:
if propname != "String": #ignore "String", that will be taken care of in the following loop
setattr(self.foolObj, propname, getattr(obj, propname))
self.foolObj.FontFile = findFont(obj.FontFile)
obj.FullPathToFont = self.foolObj.FontFile
shapes = []
for i in range( 0 , min(len(plms),len(obj.Strings)) ):
if len(obj.Strings[i]) > 0:
#generate shapestring using Draft
self.foolObj.String = obj.Strings[i]
self.foolObj.Shape = None
self.draft_shape_string.execute(self.foolObj)
shape = self.foolObj.Shape
#calculate alignment point
if obj.XAlign == 'None' and obj.YAlign == 'None':
pass #need not calculate boundbox
else:
if obj.AlignPrecisionBoundBox:
bb = getPrecisionBoundBox(shape)
else:
bb = shape.BoundBox
alignPnt = App.Vector()
if obj.XAlign == 'Left':
alignPnt.x = bb.XMin
elif obj.XAlign == 'Right':
alignPnt.x = bb.XMax
elif obj.XAlign == 'Middle':
alignPnt.x = bb.Center.x
if obj.YAlign == 'Bottom':
alignPnt.y = bb.YMin
elif obj.YAlign == 'Top':
alignPnt.y = bb.YMax
elif obj.YAlign == 'Middle':
alignPnt.y = bb.Center.y
#Apply alignment
shape.Placement = App.Placement(alignPnt*(-1.0), App.Rotation()).multiply(shape.Placement)
#Apply placement from array
shape.Placement = plms[i].multiply(shape.Placement)
shapes.append(shape.copy())
if len(shapes) == 0:
scale = 1.0
if lattice is not None:
scale = lattice.Shape.BoundBox.DiagonalLength/math.sqrt(3)/math.sqrt(len(shps))
if scale < DistConfusion * 100:
scale = 1.0
obj.Shape = markers.getNullShapeShape(scale)
raise ValueError('No strings were converted into shapes') #Feeding empty compounds to FreeCAD seems to cause rendering issues, otherwise it would have been a good idea to output nothing.
obj.Shape = Part.makeCompound(shapes)