807 lines
28 KiB
Python
807 lines
28 KiB
Python
"""
|
|
Copyright (C) 2011-2014 Parametric Products Intellectual Holdings, LLC
|
|
|
|
This file is part of CadQuery.
|
|
|
|
CadQuery is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
CadQuery is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with this library; If not, see <http://www.gnu.org/licenses/>
|
|
|
|
Wrapper Classes for FreeCAD
|
|
These classes provide a stable interface for 3d objects,
|
|
independent of the FreeCAD interface.
|
|
|
|
Future work might include use of pythonOCC, OCC, or even
|
|
another CAD kernel directly, so this interface layer is quite important.
|
|
|
|
Funny, in java this is one of those few areas where i'd actually spend the time
|
|
to make an interface and an implementation, but for new these are just rolled together
|
|
|
|
This interface layer provides three distinct values:
|
|
|
|
1. It allows us to avoid changing key api points if we change underlying implementations.
|
|
It would be a disaster if script and plugin authors had to change models because we
|
|
changed implmentations
|
|
|
|
2. Allow better documentation. One of the reasons FreeCAD is no more popular is because
|
|
its docs are terrible. This allows us to provie good documentation via docstrings
|
|
for each wrapper
|
|
|
|
3. Work around bugs. there are a quite a feb bugs in free this layer allows fixing them
|
|
|
|
4. allows for enhanced functionality. Many objects are missing features we need. For example
|
|
we need a 'forConstruciton' flag on the Wire object. this allows adding those kinds of things
|
|
|
|
5. allow changing interfaces when we'd like. there are few cases where the freecad api is not
|
|
very userfriendly: we like to change those when necesary. As an example, in the freecad api,
|
|
all factory methods are on the 'Part' object, but it is very useful to know what kind of
|
|
object each one returns, so these are better grouped by the type of object they return.
|
|
(who would know that Part.makeCircle() returns an Edge, but Part.makePolygon() returns a Wire ?
|
|
"""
|
|
from cadquery import Vector,BoundBox
|
|
import FreeCAD
|
|
|
|
from .verutil import fc_import
|
|
FreeCADPart = fc_import("FreeCAD.Part")
|
|
|
|
class Shape(object):
|
|
"""
|
|
Represents a shape in the system.
|
|
Wrappers the FreeCAD api
|
|
"""
|
|
|
|
def __init__(self,obj):
|
|
self.wrapped = obj
|
|
self.forConstruction = False
|
|
|
|
@classmethod
|
|
def cast(cls,obj,forConstruction = False):
|
|
"Returns the right type of wrapper, given a FreeCAD object"
|
|
s = obj.ShapeType
|
|
if type(obj) == FreeCAD.Base.Vector:
|
|
return Vector(obj)
|
|
tr = None
|
|
|
|
#TODO: there is a clever way to do this i'm sure with a lookup
|
|
#but it is not a perfect mapping, because we are trying to hide
|
|
#a bit of the complexity of Compounds in FreeCAD.
|
|
if s == 'Vertex':
|
|
tr= Vertex(obj)
|
|
elif s == 'Edge':
|
|
tr= Edge(obj)
|
|
elif s == 'Wire':
|
|
tr = Wire(obj)
|
|
elif s == 'Face':
|
|
tr= Face(obj)
|
|
elif s == 'Shell':
|
|
tr= Shell(obj)
|
|
elif s == 'Solid':
|
|
tr= Solid(obj)
|
|
elif s == 'Compound':
|
|
#compound of solids, lets return a solid instead
|
|
if len(obj.Solids) > 1:
|
|
tr = Solid(obj)
|
|
elif len(obj.Solids) == 1:
|
|
tr = Solid(obj.Solids[0])
|
|
elif len(obj.Wires) > 0:
|
|
tr = Wire(obj)
|
|
else:
|
|
tr= Compound(obj)
|
|
else:
|
|
raise ValueError("cast:unknown shape type %s" % s)
|
|
|
|
tr.forConstruction = forConstruction
|
|
return tr
|
|
#TODO: all these should move into the exporters folder.
|
|
#we dont need a bunch of exporting code stored in here!
|
|
#
|
|
def exportStl(self,fileName):
|
|
self.wrapped.exportStl(fileName)
|
|
|
|
def exportStep(self,fileName):
|
|
self.wrapped.exportStep(fileName)
|
|
|
|
def exportShape(self,fileName, fileFormat):
|
|
if fileFormat == ExportFormats.STL:
|
|
self.wrapped.exportStl(fileName)
|
|
elif fileFormat == ExportFormats.BREP:
|
|
self.wrapped.exportBrep(fileName)
|
|
elif fileFormat == ExportFormats.STEP:
|
|
self.wrapped.exportStep(fileName)
|
|
elif fileFormat == ExportFormats.AMF:
|
|
#not built into FreeCAD
|
|
#TODO: user selected tolerance
|
|
tess = self.wrapped.tessellate(0.1)
|
|
aw = amfUtils.AMFWriter(tess)
|
|
aw.writeAmf(fileName)
|
|
elif fileFormat == ExportFormats.IGES:
|
|
self.wrapped.exportIges(fileName)
|
|
else:
|
|
raise ValueError("Unknown export format: %s" % format)
|
|
|
|
def geomType(self):
|
|
"""
|
|
Gets the underlying geometry type
|
|
:return: a string according to the geometry type.
|
|
|
|
Implementations can return any values desired, but the
|
|
values the user uses in type filters should correspond to these.
|
|
|
|
As an example, if a user does::
|
|
|
|
CQ(object).faces("%mytype")
|
|
|
|
The expectation is that the geomType attribute will return 'mytype'
|
|
|
|
The return values depend on the type of the shape:
|
|
|
|
Vertex: always 'Vertex'
|
|
Edge: LINE, ARC, CIRCLE, SPLINE
|
|
Face: PLANE, SPHERE, CONE
|
|
Solid: 'Solid'
|
|
Shell: 'Shell'
|
|
Compound: 'Compound'
|
|
Wire: 'Wire'
|
|
"""
|
|
return self.wrapped.ShapeType
|
|
|
|
def isType(self,obj,strType):
|
|
"""
|
|
Returns True if the shape is the specified type, false otherwise
|
|
|
|
contrast with ShapeType, which will raise an exception
|
|
if the provide object is not a shape at all
|
|
"""
|
|
if hasattr(obj,'ShapeType'):
|
|
return obj.ShapeType == strType
|
|
else:
|
|
return False
|
|
|
|
def hashCode(self):
|
|
return self.wrapped.hashCode()
|
|
|
|
def isNull(self):
|
|
return self.wrapped.isNull()
|
|
|
|
def isSame(self,other):
|
|
return self.wrapped.isSame(other.wrapped)
|
|
|
|
def isEqual(self,other):
|
|
return self.wrapped.isEqual(other.wrapped)
|
|
|
|
def isValid(self):
|
|
return self.wrapped.isValid()
|
|
|
|
def BoundingBox(self):
|
|
return BoundBox(self.wrapped.BoundBox)
|
|
|
|
def Center(self):
|
|
try:
|
|
return Vector(self.wrapped.CenterOfMass)
|
|
except:
|
|
pass
|
|
def Closed(self):
|
|
return self.wrapped.Closed
|
|
|
|
def ShapeType(self):
|
|
return self.wrapped.ShapeType
|
|
|
|
def Vertices(self):
|
|
return [Vertex(i) for i in self.wrapped.Vertexes]
|
|
|
|
def Edges(self):
|
|
return [Edge(i) for i in self.wrapped.Edges]
|
|
|
|
def Compounds(self):
|
|
return [Compound(i) for i in self.wrapped.Compounds]
|
|
|
|
def Wires(self):
|
|
return [Wire(i) for i in self.wrapped.Wires]
|
|
|
|
def Faces(self):
|
|
return [Face(i) for i in self.wrapped.Faces]
|
|
|
|
def Shells(self):
|
|
return [Shell(i) for i in self.wrapped.Shells]
|
|
|
|
def Solids(self):
|
|
return [Solid(i) for i in self.wrapped.Solids]
|
|
|
|
def Area(self):
|
|
return self.wrapped.Area
|
|
|
|
def Length(self):
|
|
return self.wrapped.Length
|
|
|
|
def rotate(self,startVector,endVector,angleDegrees):
|
|
"""
|
|
Rotates a shape around an axis
|
|
:param startVector: start point of rotation axis either a 3-tuple or a Vector
|
|
:param endVector: end point of rotation axis, either a 3-tuple or a Vector
|
|
:param angleDegrees: angle to rotate, in degrees
|
|
:return: a copy of the shape, rotated
|
|
"""
|
|
if type(startVector) == tuple:
|
|
startVector = Vector(startVector)
|
|
|
|
if type(endVector) == tuple:
|
|
endVector = Vector(endVector)
|
|
|
|
tmp = self.wrapped.copy()
|
|
tmp.rotate(startVector.wrapped,endVector.wrapped,angleDegrees)
|
|
return Shape.cast(tmp)
|
|
|
|
def translate(self,vector):
|
|
|
|
if type(vector) == tuple:
|
|
vector = Vector(vector)
|
|
tmp = self.wrapped.copy()
|
|
tmp.translate(vector.wrapped)
|
|
return Shape.cast(tmp)
|
|
|
|
def scale(self,factor):
|
|
tmp = self.wrapped.copy()
|
|
tmp.scale(factor)
|
|
return Shape.cast(tmp)
|
|
|
|
def copy(self):
|
|
return Shape.cast(self.wrapped.copy())
|
|
|
|
def transformShape(self,tMatrix):
|
|
"""
|
|
tMatrix is a matrix object.
|
|
returns a copy of the ojbect, transformed by the provided matrix,
|
|
with all objects keeping their type
|
|
"""
|
|
tmp = self.wrapped.copy()
|
|
tmp.transformShape(tMatrix)
|
|
r = Shape.cast(tmp)
|
|
r.forConstruction = self.forConstruction
|
|
return r
|
|
|
|
def transformGeometry(self,tMatrix):
|
|
"""
|
|
tMatrix is a matrix object.
|
|
|
|
returns a copy of the object, but with geometry transformed insetad of just
|
|
rotated.
|
|
|
|
WARNING: transformGeometry will sometimes convert lines and circles to splines,
|
|
but it also has the ability to handle skew and stretching transformations.
|
|
|
|
If your transformation is only translation and rotation, it is safer to use transformShape,
|
|
which doesnt change the underlying type of the geometry, but cannot handle skew transformations
|
|
"""
|
|
tmp = self.wrapped.copy()
|
|
tmp = tmp.transformGeometry(tMatrix)
|
|
return Shape.cast(tmp)
|
|
|
|
def __hash__(self):
|
|
return self.wrapped.hashCode()
|
|
|
|
class Vertex(Shape):
|
|
def __init__(self,obj,forConstruction=False):
|
|
"""
|
|
Create a vertex from a FreeCAD Vertex
|
|
"""
|
|
self.wrapped = obj
|
|
self.forConstruction = forConstruction
|
|
self.X = obj.X
|
|
self.Y = obj.Y
|
|
self.Z = obj.Z
|
|
|
|
def toTuple(self):
|
|
return (self.X,self.Y,self.Z)
|
|
|
|
def Center(self):
|
|
"""
|
|
The center of a vertex is itself!
|
|
"""
|
|
return Vector(self.wrapped.Point)
|
|
|
|
class Edge(Shape):
|
|
def __init__(self,obj):
|
|
"""
|
|
An Edge
|
|
"""
|
|
self.wrapped = obj
|
|
#self.startPoint = None
|
|
#self.endPoint = None
|
|
|
|
self.edgetypes= {
|
|
FreeCADPart.Line : 'LINE',
|
|
FreeCADPart.ArcOfCircle : 'ARC',
|
|
FreeCADPart.Circle : 'CIRCLE'
|
|
}
|
|
|
|
def geomType(self):
|
|
t = type(self.wrapped.Curve)
|
|
if self.edgetypes.has_key(t):
|
|
return self.edgetypes[t]
|
|
else:
|
|
return "Unknown Edge Curve Type: %s" % str(t)
|
|
|
|
def startPoint(self):
|
|
"""
|
|
|
|
:return: a vector representing the start poing of this edge
|
|
|
|
Note, circles may have the start and end points the same
|
|
"""
|
|
#work around freecad bug where valueAt is unreliable
|
|
curve = self.wrapped.Curve
|
|
return Vector( curve.value(self.wrapped.ParameterRange[0]))
|
|
|
|
def endPoint(self):
|
|
"""
|
|
|
|
:return: a vector representing the end point of this edge.
|
|
|
|
Note, circles may have the start and end points the same
|
|
|
|
"""
|
|
#warning: easier syntax in freecad of <Edge>.valueAt(<Edge>.ParameterRange[1]) has
|
|
#a bug with curves other than arcs, but using the underlying curve directly seems to work
|
|
#that's the solution i'm using below
|
|
curve = self.wrapped.Curve
|
|
v = Vector( curve.value(self.wrapped.ParameterRange[1]))
|
|
return v
|
|
|
|
def tangentAt(self,locationVector=None):
|
|
"""
|
|
Compute tangent vector at the specified location.
|
|
:param locationVector: location to use. Use the center point if None
|
|
:return: tangent vector
|
|
"""
|
|
if locationVector is None:
|
|
locationVector = self.Center()
|
|
|
|
p = self.wrapped.Curve.parameter(locationVector.wrapped)
|
|
return Vector(self.wrapped.tangentAt(p))
|
|
|
|
@classmethod
|
|
def makeCircle(cls,radius,pnt=(0,0,0),dir=(0,0,1),angle1=360.0,angle2=360):
|
|
return Edge(FreeCADPart.makeCircle(radius,toVector(pnt),toVector(dir),angle1,angle2))
|
|
|
|
@classmethod
|
|
def makeSpline(cls,listOfVector):
|
|
"""
|
|
Interpolate a spline through the provided points.
|
|
:param cls:
|
|
:param listOfVector: a list of Vectors that represent the points
|
|
:return: an Edge
|
|
"""
|
|
vecs = [v.wrapped for v in listOfVector]
|
|
|
|
spline = FreeCADPart.BSplineCurve()
|
|
spline.interpolate(vecs,False)
|
|
return Edge(spline.toShape())
|
|
|
|
@classmethod
|
|
def makeThreePointArc(cls,v1,v2,v3):
|
|
"""
|
|
Makes a three point arc through the provided points
|
|
:param cls:
|
|
:param v1: start vector
|
|
:param v2: middle vector
|
|
:param v3: end vector
|
|
:return: an edge object through the three points
|
|
"""
|
|
arc = FreeCADPart.Arc(v1.wrapped,v2.wrapped,v3.wrapped)
|
|
e = Edge(arc.toShape())
|
|
return e #arcane and undocumented, this creates an Edge object
|
|
|
|
@classmethod
|
|
def makeLine(cls,v1,v2):
|
|
"""
|
|
Create a line between two points
|
|
:param v1: Vector that represents the first point
|
|
:param v2: Vector that represents the second point
|
|
:return: A linear edge between the two provided points
|
|
"""
|
|
return Edge(FreeCADPart.makeLine(v1.toTuple(),v2.toTuple() ))
|
|
|
|
|
|
class Wire(Shape):
|
|
def __init__(self,obj):
|
|
"""
|
|
A Wire
|
|
"""
|
|
self.wrapped = obj
|
|
|
|
@classmethod
|
|
def combine(cls,listOfWires):
|
|
"""
|
|
Attempt to combine a list of wires into a new wire.
|
|
the wires are returned in a list.
|
|
:param cls:
|
|
:param listOfWires:
|
|
:return:
|
|
"""
|
|
return Shape.cast(FreeCADPart.Wire([w.wrapped for w in listOfWires]))
|
|
|
|
@classmethod
|
|
def assembleEdges(cls,listOfEdges):
|
|
"""
|
|
Attempts to build a wire that consists of the edges in the provided list
|
|
:param cls:
|
|
:param listOfEdges: a list of Edge objects
|
|
:return: a wire with the edges assembled
|
|
"""
|
|
fCEdges = [a.wrapped for a in listOfEdges]
|
|
|
|
wa = Wire( FreeCADPart.Wire(fCEdges) )
|
|
return wa
|
|
|
|
@classmethod
|
|
def makeCircle(cls,radius,center,normal):
|
|
"""
|
|
Makes a Circle centered at the provided point, having normal in the provided direction
|
|
:param radius: floating point radius of the circle, must be > 0
|
|
:param center: vector representing the center of the circle
|
|
:param normal: vector representing the direction of the plane the circle should lie in
|
|
:return:
|
|
"""
|
|
w = Wire(FreeCADPart.Wire([FreeCADPart.makeCircle(radius,center.wrapped,normal.wrapped)]))
|
|
return w
|
|
|
|
@classmethod
|
|
def makePolygon(cls,listOfVertices,forConstruction=False):
|
|
#convert list of tuples into Vectors.
|
|
w = Wire(FreeCADPart.makePolygon([i.wrapped for i in listOfVertices]))
|
|
w.forConstruction = forConstruction
|
|
return w
|
|
|
|
@classmethod
|
|
def makeHelix(cls,pitch,height,radius,angle=360.0):
|
|
"""
|
|
Make a helix with a given pitch, height and radius
|
|
By default a cylindrical surface is used to create the helix. If
|
|
the fourth parameter is set (the apex given in degree) a conical surface is used instead'
|
|
"""
|
|
return Wire(FreeCADPart.makeHelix(pitch,height,radius,angle))
|
|
|
|
|
|
class Face(Shape):
|
|
def __init__(self,obj):
|
|
"""
|
|
A Face
|
|
"""
|
|
self.wrapped = obj
|
|
|
|
self.facetypes = {
|
|
#TODO: bezier,bspline etc
|
|
FreeCADPart.Plane : 'PLANE',
|
|
FreeCADPart.Sphere : 'SPHERE',
|
|
FreeCADPart.Cone : 'CONE'
|
|
}
|
|
|
|
def geomType(self):
|
|
t = type(self.wrapped.Surface)
|
|
if self.facetypes.has_key(t):
|
|
return self.facetypes[t]
|
|
else:
|
|
return "Unknown Face Surface Type: %s" % str(t)
|
|
|
|
def normalAt(self,locationVector=None):
|
|
"""
|
|
Computes the normal vector at the desired location on the face.
|
|
|
|
:returns: a vector representing the direction
|
|
:param locationVector: the location to compute the normal at. If none, the center of the face is used.
|
|
:type locationVector: a vector that lies on the surface.
|
|
"""
|
|
if locationVector == None:
|
|
locationVector = self.Center()
|
|
(u,v) = self.wrapped.Surface.parameter(locationVector.wrapped)
|
|
|
|
return Vector(self.wrapped.normalAt(u,v).normalize() )
|
|
|
|
@classmethod
|
|
def makePlane(cls,length,width,basePnt=None,dir=None):
|
|
return Face(FreeCADPart.makePlan(length,width,toVector(basePnt),toVector(dir)))
|
|
|
|
@classmethod
|
|
def makeRuledSurface(cls,edgeOrWire1,edgeOrWire2,dist=None):
|
|
"""
|
|
'makeRuledSurface(Edge|Wire,Edge|Wire) -- Make a ruled surface
|
|
Create a ruled surface out of two edges or wires. If wires are used then
|
|
these must have the same
|
|
"""
|
|
return Shape.cast(FreeCADPart.makeRuledSurface(edgeOrWire1.obj,edgeOrWire2.obj,dist))
|
|
|
|
def cut(self,faceToCut):
|
|
"Remove a face from another one"
|
|
return Shape.cast(self.obj.cut(faceToCut.obj))
|
|
|
|
def fuse(self,faceToJoin):
|
|
return Shape.cast(self.obj.fuse(faceToJoin.obj))
|
|
|
|
def intersect(self,faceToIntersect):
|
|
"""
|
|
computes the intersection between the face and the supplied one.
|
|
The result could be a face or a compound of faces
|
|
"""
|
|
return Shape.cast(self.obj.common(faceToIntersect.obj))
|
|
|
|
|
|
class Shell(Shape):
|
|
def __init__(self,wrapped):
|
|
"""
|
|
A Shell
|
|
"""
|
|
self.wrapped = wrapped
|
|
|
|
@classmethod
|
|
def makeShell(cls,listOfFaces):
|
|
return Shell(FreeCADPart.makeShell([i.obj for i in listOfFaces]))
|
|
|
|
|
|
class Solid(Shape):
|
|
def __init__(self,obj):
|
|
"""
|
|
A Solid
|
|
"""
|
|
self.wrapped = obj
|
|
|
|
@classmethod
|
|
def isSolid(cls,obj):
|
|
"""
|
|
Returns true if the object is a FreeCAD solid, false otherwise
|
|
"""
|
|
if hasattr(obj, 'ShapeType'):
|
|
if obj.ShapeType == 'Solid' or\
|
|
(obj.ShapeType == 'Compound' and len(obj.Solids) > 0):
|
|
return True
|
|
return False
|
|
|
|
@classmethod
|
|
def makeBox(cls,length,width,height,pnt=Vector(0,0,0),dir=Vector(0,0,1)):
|
|
"""
|
|
makeBox(length,width,height,[pnt,dir]) -- Make a box located\nin pnt with the d
|
|
imensions (length,width,height)\nBy default pnt=Vector(0,0,0) and dir=Vector(0,0,1)'
|
|
"""
|
|
return Shape.cast(FreeCADPart.makeBox(length,width,height,pnt.wrapped,dir.wrapped))
|
|
|
|
@classmethod
|
|
def makeCone(cls,radius1,radius2,height,pnt=Vector(0,0,0),dir=Vector(0,0,1),angleDegrees=360):
|
|
"""
|
|
'makeCone(radius1,radius2,height,[pnt,dir,angle]) --
|
|
Make a cone with given radii and height\nBy default pnt=Vector(0,0,0),
|
|
dir=Vector(0,0,1) and angle=360'
|
|
"""
|
|
return Shape.cast(FreeCADPart.makeCone(radius1,radius2,height,pnt.wrapped,dir.wrapped,angleDegrees))
|
|
|
|
@classmethod
|
|
def makeCylinder(cls,radius,height,pnt=Vector(0,0,0),dir=Vector(0,0,1),angleDegrees=360):
|
|
"""
|
|
makeCylinder(radius,height,[pnt,dir,angle]) --
|
|
Make a cylinder with a given radius and height
|
|
By default pnt=Vector(0,0,0),dir=Vector(0,0,1) and angle=360'
|
|
"""
|
|
return Shape.cast(FreeCADPart.makeCylinder(radius,height,pnt.wrapped,dir.wrapped,angleDegrees))
|
|
|
|
@classmethod
|
|
def makeTorus(cls,radius1,radius2,pnt=None,dir=None,angleDegrees1=None,angleDegrees2=None):
|
|
"""
|
|
makeTorus(radius1,radius2,[pnt,dir,angle1,angle2,angle]) --
|
|
Make a torus with agiven radii and angles
|
|
By default pnt=Vector(0,0,0),dir=Vector(0,0,1),angle1=0
|
|
,angle1=360 and angle=360'
|
|
"""
|
|
return Shape.cast(FreeCADPart.makeTorus(radius1,radius2,pnt,dir,angleDegrees1,angleDegrees2))
|
|
|
|
@classmethod
|
|
def sweep(cls,profileWire,pathWire):
|
|
"""
|
|
make a solid by sweeping the profileWire along the specified path
|
|
:param cls:
|
|
:param profileWire:
|
|
:param pathWire:
|
|
:return:
|
|
"""
|
|
#needs to use freecad wire.makePipe or makePipeShell
|
|
#needs to allow free-space wires ( those not made from a workplane )
|
|
|
|
@classmethod
|
|
def makeLoft(cls,listOfWire):
|
|
"""
|
|
makes a loft from a list of wires
|
|
The wires will be converted into faces when possible-- it is presumed that nobody ever actually
|
|
wants to make an infinitely thin shell for a real FreeCADPart.
|
|
"""
|
|
#the True flag requests building a solid instead of a shell.
|
|
|
|
return Shape.cast(FreeCADPart.makeLoft([i.wrapped for i in listOfWire],True))
|
|
|
|
@classmethod
|
|
def makeWedge(cls,xmin,ymin,zmin,z2min,x2min,xmax,ymax,zmax,z2max,x2max,pnt=None,dir=None):
|
|
"""
|
|
'makeWedge(xmin, ymin, zmin, z2min, x2min,
|
|
xmax, ymax, zmax, z2max, x2max,[pnt, dir])
|
|
Make a wedge located in pnt\nBy default pnt=Vector(0,0,0) and dir=Vec
|
|
tor(0,0,1)'
|
|
"""
|
|
return Shape.cast(FreeCADPart.makeWedge(xmin,ymin,zmin,z2min,x2min,xmax,ymax,zmax,z2max,x2max,pnt,dir))
|
|
|
|
@classmethod
|
|
def makeSphere(cls,radius,pnt=None,angleDegrees1=None,angleDegrees2=None,angleDegrees3=None):
|
|
"""
|
|
'makeSphere(radius,[pnt, dir, angle1,angle2,angle3]) --
|
|
Make a sphere with a giv
|
|
en radius\nBy default pnt=Vector(0,0,0), dir=Vector(0,0,1), angle1=0, angle2=90 and angle3=360'
|
|
"""
|
|
return Solid(FreeCADPart.makeSphere(radius,pnt,angleDegrees1,angleDegrees2,angleDegrees3))
|
|
|
|
@classmethod
|
|
def extrudeLinearWithRotation(cls,outerWire,innerWires,vecCenter, vecNormal,angleDegrees):
|
|
"""
|
|
Creates a 'twisted prism' by extruding, while simultaneously rotating around the extrusion vector.
|
|
|
|
Though the signature may appear to be similar enough to extrudeLinear to merit combining them, the
|
|
construction methods used here are different enough that they should be separate.
|
|
|
|
At a high level, the steps followed ar:
|
|
(1) accept a set of wires
|
|
(2) create another set of wires like this one, but which are transformed and rotated
|
|
(3) create a ruledSurface between the sets of wires
|
|
(40 create a shell and compute the resulting object
|
|
|
|
:param outerWire: the outermost wire, a cad.Wire
|
|
:param innerWires: a list of inner wires, a list of cad.Wire
|
|
:param vecCenter: the center point about which to rotate. the axis of rotation is defined by
|
|
vecNormal, located at vecCenter. ( a cad.Vector )
|
|
:param vecNormal: a vector along which to extrude the wires ( a cad.Vector )
|
|
:param angleDegrees: the angle to rotate through while extruding
|
|
:return: a cad.Solid object
|
|
"""
|
|
|
|
#from this point down we are dealing with FreeCAD wires not cad.wires
|
|
startWires = [outerWire.wrapped] + [ i.wrapped for i in innerWires]
|
|
endWires = []
|
|
p1 = vecCenter.wrapped
|
|
p2 = vecCenter.add(vecNormal).wrapped
|
|
|
|
#make translated and rotated copy of each wire
|
|
for w in startWires:
|
|
w2 = w.copy()
|
|
w2.translate(vecNormal.wrapped)
|
|
w2.rotate(p1,p2,angleDegrees)
|
|
endWires.append(w2)
|
|
|
|
#make a ruled surface for each set of wires
|
|
sides = []
|
|
for w1,w2 in zip(startWires,endWires):
|
|
rs = FreeCADPart.makeRuledSurface(w1,w2)
|
|
sides.append(rs)
|
|
|
|
#make faces for the top and bottom
|
|
startFace = FreeCADPart.Face(startWires)
|
|
endFace = FreeCADPart.Face(endWires)
|
|
|
|
#collect all the faces from the sides
|
|
faceList = [ startFace]
|
|
for s in sides:
|
|
faceList.extend(s.Faces)
|
|
faceList.append(endFace)
|
|
|
|
shell = FreeCADPart.makeShell(faceList)
|
|
solid = FreeCADPart.makeSolid(shell)
|
|
return Shape.cast(solid)
|
|
|
|
@classmethod
|
|
def extrudeLinear(cls,outerWire,innerWires,vecNormal):
|
|
"""
|
|
Attempt to extrude the list of wires into a prismatic solid in the provided direction
|
|
|
|
:param outerWire: the outermost wire
|
|
:param innerWires: a list of inner wires
|
|
:param vecNormal: a vector along which to extrude the wires
|
|
:return: a Solid object
|
|
|
|
The wires must not intersect
|
|
|
|
Extruding wires is very non-trivial. Nested wires imply very different geometry, and
|
|
there are many geometries that are invalid. In general, the following conditions must be met:
|
|
|
|
* all wires must be closed
|
|
* there cannot be any intersecting or self-intersecting wires
|
|
* wires must be listed from outside in
|
|
* more than one levels of nesting is not supported reliably
|
|
|
|
This method will attempt to sort the wires, but there is much work remaining to make this method
|
|
reliable.
|
|
"""
|
|
|
|
#one would think that fusing faces into a compound and then extruding would work,
|
|
#but it doesnt-- the resulting compound appears to look right, ( right number of faces, etc),
|
|
#but then cutting it from the main solid fails with BRep_NotDone.
|
|
#the work around is to extrude each and then join the resulting solids, which seems to work
|
|
|
|
#FreeCAD allows this in one operation, but others might not
|
|
freeCADWires = [outerWire.wrapped]
|
|
for w in innerWires:
|
|
freeCADWires.append(w.wrapped)
|
|
|
|
f = FreeCADPart.Face(freeCADWires)
|
|
result = f.extrude(vecNormal.wrapped)
|
|
|
|
return Shape.cast(result)
|
|
|
|
def tessellate(self,tolerance):
|
|
return self.wrapped.tessellate(tolerance)
|
|
|
|
def intersect(self,toIntersect):
|
|
"""
|
|
computes the intersection between this solid and the supplied one
|
|
The result could be a face or a compound of faces
|
|
"""
|
|
return Shape.cast(self.wrapped.common(toIntersect.wrapped))
|
|
|
|
def cut(self,solidToCut):
|
|
"Remove a solid from another one"
|
|
return Shape.cast(self.wrapped.cut(solidToCut.wrapped))
|
|
|
|
def fuse(self,solidToJoin):
|
|
return Shape.cast(self.wrapped.fuse(solidToJoin.wrapped))
|
|
|
|
def fillet(self,radius,edgeList):
|
|
"""
|
|
Fillets the specified edges of this solid.
|
|
:param radius: float > 0, the radius of the fillet
|
|
:param edgeList: a list of Edge objects, which must belong to this solid
|
|
:return: Filleted solid
|
|
"""
|
|
nativeEdges = [e.wrapped for e in edgeList]
|
|
return Shape.cast(self.wrapped.makeFillet(radius,nativeEdges))
|
|
|
|
def shell(self,faceList,thickness,tolerance=0.0001):
|
|
"""
|
|
make a shelled solid of given by removing the list of faces
|
|
|
|
:param faceList: list of face objects, which must be part of the solid.
|
|
:param thickness: floating point thickness. positive shells outwards, negative shells inwards
|
|
:param tolerance: modelling tolerance of the method, default=0.0001
|
|
:return: a shelled solid
|
|
|
|
**WARNING** The underlying FreeCAD implementation can very frequently have problems
|
|
with shelling complex geometries!
|
|
"""
|
|
nativeFaces = [ f.wrapped for f in faceList]
|
|
return Shape.cast( self.wrapped.makeThickness(nativeFaces,thickness,tolerance))
|
|
|
|
class Compound(Shape):
|
|
def __init__(self,obj):
|
|
"""
|
|
An Edge
|
|
"""
|
|
self.wrapped = obj
|
|
|
|
def Center(self):
|
|
#TODO: compute the weighted average instead of the first solid
|
|
return self.Solids()[0].Center()
|
|
|
|
@classmethod
|
|
def makeCompound(cls,listOfShapes):
|
|
"""
|
|
Create a compound out of a list of shapes
|
|
"""
|
|
solids = [s.wrapped for s in listOfShapes]
|
|
c = FreeCADPart.Compound(solids)
|
|
return Shape.cast( c)
|
|
|
|
def fuse(self,toJoin):
|
|
return Shape.cast(self.wrapped.fuse(toJoin.wrapped))
|
|
|
|
def tessellate(self,tolerance):
|
|
return self.wrapped.tessellate(tolerance)
|