File size: 3,643 Bytes
985c397 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 | # SPDX-License-Identifier: LGPL-2.1-or-later
# ***************************************************************************
# * Copyright (c) 2014 Johan Kristensen *
# * Copyright (c) 2014 Juergen Riegel <FreeCAD@juergen-riegel.net> *
# * *
# * 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. *
# * *
# * This program 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 Library General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with this program; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
import FreeCAD, FreeCADGui, Sketcher, Part, math
__title__ = "Regular polygon profile lib"
__author__ = "Johan Kristensen"
__url__ = "https://www.freecad.org"
App = FreeCAD
Gui = FreeCADGui
def makeRegularPolygon(
sketch,
sides,
centerPoint=App.Vector(0, 0, 0),
firstCornerPoint=App.Vector(-20.00, 34.64, 0),
construction=False,
):
if not sketch:
App.Console.PrintError("No sketch specified in 'makeRegularPolygon'")
return
if sides < 3:
App.Console.PrintError("Number of sides must be at least 3 in 'makeRegularPolygon'")
return
diffVec = firstCornerPoint - centerPoint
diffVec.z = 0
angular_diff = 2 * math.pi / sides
pointList = []
for i in range(0, sides):
cos_v = math.cos(angular_diff * i)
sin_v = math.sin(angular_diff * i)
pointList.append(
centerPoint
+ App.Vector(
cos_v * diffVec.x - sin_v * diffVec.y, cos_v * diffVec.y + sin_v * diffVec.x, 0
)
)
geoList = []
for i in range(0, sides - 1):
geoList.append(Part.LineSegment(pointList[i], pointList[i + 1]))
geoList.append(Part.LineSegment(pointList[sides - 1], pointList[0]))
geoList.append(Part.Circle(centerPoint, App.Vector(0, 0, 1), diffVec.Length))
geoIndices = sketch.addGeometry(geoList, construction)
sketch.setConstruction(geoIndices[-1], True)
conList = []
for i in range(0, sides - 1):
conList.append(Sketcher.Constraint("Coincident", geoIndices[i], 2, geoIndices[i + 1], 1))
conList.append(Sketcher.Constraint("Coincident", geoIndices[sides - 1], 2, geoIndices[0], 1))
for i in range(0, sides - 1):
conList.append(Sketcher.Constraint("Equal", geoIndices[0], geoIndices[i + 1]))
for i in range(0, sides):
conList.append(Sketcher.Constraint("PointOnObject", geoIndices[i], 2, geoIndices[-1]))
sketch.addConstraint(conList)
return
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