Draft: split Polygon from Draft.py

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src/Mod/Draft/draftobjects/polygon.py

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+# ***************************************************************************
+# *   Copyright (c) 2009, 2010 Yorik van Havre <yorik@uncreated.net>        *
+# *   Copyright (c) 2009, 2010 Ken Cline <cline@frii.com>                   *
+# *   Copyright (c) 2020 FreeCAD Developers                                 *
+# *                                                                         *
+# *   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                                                                   *
+# *                                                                         *
+# ***************************************************************************
+"""This module provides the object code for Draft Polygon.
+"""
+## @package polygon
+# \ingroup DRAFT
+# \brief This module provides the object code for Draft Polygon.
+
+import math
+
+from PySide.QtCore import QT_TRANSLATE_NOOP
+
+import FreeCAD as App
+
+import DraftGeomUtils
+
+from draftutils.utils import get_param
+
+from draftobjects.base import DraftObject
+
+
+class Polygon(DraftObject):
+    """The Polygon object"""
+
+    def __init__(self, obj):
+        super(Polygon, self).__init__(obj, "Polygon")
+
+        _tip = "Number of faces"
+        obj.addProperty("App::PropertyInteger", "FacesNumber",
+                        "Draft",QT_TRANSLATE_NOOP("App::Property", _tip))
+
+        _tip = "Radius of the control circle"
+        obj.addProperty("App::PropertyLength", "Radius",
+                        "Draft",QT_TRANSLATE_NOOP("App::Property", _tip))
+        
+        _tip = "How the polygon must be drawn from the control circle"
+        obj.addProperty("App::PropertyEnumeration", "DrawMode",
+                        "Draft",QT_TRANSLATE_NOOP("App::Property", _tip))
+        
+        _tip = "Radius to use to fillet the corners"
+        obj.addProperty("App::PropertyLength", "FilletRadius",
+                        "Draft",QT_TRANSLATE_NOOP("App::Property", _tip))
+        
+        _tip = "Size of the chamfer to give to the corners"
+        obj.addProperty("App::PropertyLength", "ChamferSize",
+                        "Draft",QT_TRANSLATE_NOOP("App::Property", _tip))
+        
+        _tip = "Create a face"
+        obj.addProperty("App::PropertyBool", "MakeFace",
+                        "Draft",QT_TRANSLATE_NOOP("App::Property", _tip))
+        
+        _tip = "The area of this object"
+        obj.addProperty("App::PropertyArea", "Area",
+                        "Draft",QT_TRANSLATE_NOOP("App::Property", _tip))
+        
+        obj.MakeFace = get_param("fillmode",True)
+        obj.DrawMode = ['inscribed','circumscribed']
+        obj.FacesNumber = 0
+        obj.Radius = 1
+
+    def execute(self, obj):
+        if (obj.FacesNumber >= 3) and (obj.Radius.Value > 0):
+            import Part
+            plm = obj.Placement
+            angle = (math.pi * 2) / obj.FacesNumber
+            if obj.DrawMode == 'inscribed':
+                delta = obj.Radius.Value
+            else:
+                delta = obj.Radius.Value / math.cos(angle / 2.0)
+            pts = [App.Vector(delta, 0, 0)]
+            for i in range(obj.FacesNumber - 1):
+                ang = (i + 1) * angle
+                pts.append(App.Vector(delta * math.cos(ang),
+                                      delta*math.sin(ang),
+                                      0))
+            pts.append(pts[0])
+            shape = Part.makePolygon(pts)
+            if "ChamferSize" in obj.PropertiesList:
+                if obj.ChamferSize.Value != 0:
+                    w = DraftGeomUtils.filletWire(shape,obj.ChamferSize.Value,
+                                                  chamfer=True)
+                    if w:
+                        shape = w
+            if "FilletRadius" in obj.PropertiesList:
+                if obj.FilletRadius.Value != 0:
+                    w = DraftGeomUtils.filletWire(shape, 
+                                                  obj.FilletRadius.Value)
+                    if w:
+                        shape = w
+            if hasattr(obj,"MakeFace"):
+                if obj.MakeFace:
+                    shape = Part.Face(shape)
+            else:
+                shape = Part.Face(shape)
+            obj.Shape = shape
+            if hasattr(obj, "Area") and hasattr(shape, "Area"):
+                obj.Area = shape.Area
+            obj.Placement = plm
+        obj.positionBySupport()
+
+
+_Polygon = Polygon