Macro Pyramid
Description |
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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: [1] Author: Eddy Verlinden, Genk, Belgium |
Author |
Eddy Verlinden, Genk, Belgium |
Download |
[2] |
Links |
Macros recipes How to install macros How to customize toolbars |
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 * # * * # *************************************************************************** # version 01.00 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 str(FreeCAD.getUserAppDataDir())+'Mod' + '/polyhedrons/resources/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()