Macro Pyramid
Description |
---|
This macro creates a parametric piramid. The radiuses and the height will be set at creation time similar to Part Cone. Macro version: 01.00 Last modified: 2019-11-10 FreeCAD version: All Download: Icon ToolBar Author: Eddy Verlinden, Genk, Belgium |
Author |
Eddy Verlinden, Genk, Belgium |
Download |
Icon ToolBar |
Links |
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Macro Version |
01.00 |
Date last modified |
2019-11-10 |
FreeCAD Version(s) |
All |
Default shortcut |
None |
See also |
None |
Description
This macro creates a parametric pyramid. The radiuses and the height will be set at creation time similar to Part Cone. All parameters can be adjusted. It is possible to create pyramids with a perfect tip.
How to use
- Install: See info at (github_link)
- Once installed, open Menu → Macro → Macros. Click on pyramid.py and then click on button execute.
- A knotted pyramid will appear, similar to Part Cone
- Change the parameters just like with Part Cone.
Script
pyramid.py
# ***************************************************************************
# * Copyright (c) 2019 Eddy Verlinden *
# * *
# * This file is part of the FreeCAD CAx development system. *
# * *
# * This program is free software; you can redistribute it and/or modify *
# * it under the terms of the GNU Lesser General Public License (LGPL) *
# * as published by the Free Software Foundation; either version 2 of *
# * the License, or (at your option) any later version. *
# * for detail see the LICENCE text file. *
# * *
# * FreeCAD 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 Library General Public *
# * License along with FreeCAD; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
__Title__="Macro_Pyramid"
__Author__ = "Eddy Verlinden"
__Version__ = "01.00"
__Date__ = "2019-11-10"
__Comment__ = "This macro creates a parametric pyramid."
import FreeCAD,FreeCADGui
import Part
import math
import sys
def horizontal_regular_polygon_vertexes(sidescount,radius,z, startangle = 0):
vertexes = []
if radius != 0 :
for i in range(0,sidescount+1):
angle = 2 * math.pi * i / sidescount + math.pi + startangle
vertex = (radius * math.cos(angle), radius * math.sin(angle), z)
vertexes.append(vertex)
else:
vertex = (0,0,z)
vertexes.append(vertex)
return vertexes
class Pyramid:
radius1value = 0
radius2value = 0
sidescountvalue = 0
side1value = 0
side2value = 0
def __init__(self, obj, sidescount = 5,radius_bottom = 2 , radius_top = 4, height = 10):
obj.addProperty("App::PropertyLength","Radius1","Pyramid","Radius of the pyramid").Radius1=radius_bottom
obj.addProperty("App::PropertyLength","Radius2","Pyramid","Radius of the pyramid").Radius2=radius_top
obj.addProperty("App::PropertyLength","Height","Pyramid","Height of the pyramid").Height = height
obj.addProperty("App::PropertyInteger","Sidescount","Pyramid","Sidescount of the pyramid").Sidescount = sidescount
obj.addProperty("App::PropertyLength","Sidelength1","Pyramid","Sidelength1 of the pyramid")
obj.addProperty("App::PropertyLength","Sidelength2","Pyramid","Sidelength2 of the pyramid")
obj.Proxy = self
def execute (self,obj):
sidescount = obj.Sidescount
angle = 2 * math.pi / sidescount
radius_bottom = obj.Radius1
radius_top = obj.Radius2
height = obj.Height
if radius_bottom != self.radius1value: # or sidescount != self.sidescountvalue
obj.Sidelength1 = radius_bottom * math.sin(angle/2) * 2
self.radius1value = radius_bottom
self.side1value = obj.Sidelength1
elif obj.Sidelength1 != self.side1value:
self.radius1value = (obj.Sidelength1 / 2) / math.sin(angle/2)
obj.Radius1 = self.radius1value
radius_bottom = self.radius1value
side1value = obj.Sidelength1
if radius_top != self.radius2value : #or sidescount != self.sidescountvalue
obj.Sidelength2 = radius_top * math.sin(angle/2) * 2
self.radius2value = radius_top
self.side2value = obj.Sidelength2
elif obj.Sidelength2 != self.side2value:
self.radius2value = (obj.Sidelength2 / 2) / math.sin(angle/2)
obj.Radius2 = self.radius2value
radius_top = self.radius2value
side2value = obj.Sidelength2
faces = []
if radius_bottom == 0 and radius_top == 0:
FreeCAD.Console.PrintMessage("Both radiuses are zero" + "\n")
else:
vertexes_bottom = horizontal_regular_polygon_vertexes(sidescount,radius_bottom,0)
vertexes_top = horizontal_regular_polygon_vertexes(sidescount,radius_top,height)
if radius_bottom != 0:
polygon_bottom = Part.makePolygon(vertexes_bottom)
face_bottom = Part.Face(polygon_bottom)
faces.append(face_bottom)
if radius_top != 0:
polygon_top = Part.makePolygon(vertexes_top)
face_top = Part.Face(polygon_top)
faces.append(face_top)
for i in range(sidescount):
if radius_top == 0:
vertexes_side=[vertexes_bottom[i],vertexes_bottom[i+1],vertexes_top[0],vertexes_bottom[i]]
elif radius_bottom == 0:
vertexes_side=[vertexes_bottom[0],vertexes_top[i+1],vertexes_top[i],vertexes_bottom[0]]
else:
vertexes_side=[vertexes_bottom[i],vertexes_bottom[i+1],vertexes_top[i+1],vertexes_top[i],vertexes_bottom[i]]
polygon_side=Part.makePolygon(vertexes_side)
faces.append(Part.Face(polygon_side))
shell = Part.makeShell(faces)
solid = Part.makeSolid(shell)
obj.Shape = solid
# ===========================================================================
class ViewProviderBox:
def __init__(self, obj):
obj.Proxy = self
def attach(self, obj):
return
def updateData(self, fp, prop):
return
def getDisplayModes(self,obj):
return "As Is"
def getDefaultDisplayMode(self):
return "As Is"
def setDisplayMode(self,mode):
return "As Is"
def onChanged(self, vobj, prop):
pass
def getIcon(self):
return 'https://raw.githubusercontent.com/eddyverl/FreeCad-Pyramids-and-Polyhedrons/master/icons/pyramid.svg'
# ===========================================================================
if FreeCAD.ActiveDocument == None:
FreeCAD.newDocument()
obj=FreeCAD.ActiveDocument.addObject("Part::FeaturePython","Pyramid") # see https://www.freecadweb.org/wiki/Creating_a_FeaturePython_Box,_Part_II
Pyramid(obj)
ViewProviderBox(obj.ViewObject)
FreeCAD.ActiveDocument.recompute()
Link
The forum discussion Macros for pyramids and polyhedrons