Draft: split Shapestring from Draft.py
This commit is contained in:
carlopav
committed by
Yorik van Havre
Yorik van Havre
parent
bea4431b18
commit
a4f802847c
203
src/Mod/Draft/draftobjects/shapestring.py
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203
src/Mod/Draft/draftobjects/shapestring.py
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# ***************************************************************************
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# * Copyright (c) 2009, 2010 Yorik van Havre <yorik@uncreated.net> *
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# * Copyright (c) 2009, 2010 Ken Cline <cline@frii.com> *
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# * Copyright (c) 2020 FreeCAD Developers *
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# * *
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# * This program is free software; you can redistribute it and/or modify *
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# * it under the terms of the GNU Lesser General Public License (LGPL) *
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# * as published by the Free Software Foundation; either version 2 of *
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# * the License, or (at your option) any later version. *
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# * for detail see the LICENCE text file. *
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# * *
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# * This program is distributed in the hope that it will be useful, *
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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# * GNU Library General Public License for more details. *
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# * *
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# * You should have received a copy of the GNU Library General Public *
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# * License along with this program; if not, write to the Free Software *
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# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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# * USA *
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# * *
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# ***************************************************************************
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"""This module provides the object code for Draft Shapestring.
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"""
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## @package shapestring
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# \ingroup DRAFT
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# \brief This module provides the object code for Draft Shapestring.
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import sys
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import FreeCAD as App
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from PySide.QtCore import QT_TRANSLATE_NOOP
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from draftutils.utils import epsilon
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from draftutils.translate import translate
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from draftobjects.base import DraftObject
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class ShapeString(DraftObject):
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"""The ShapeString object"""
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def __init__(self, obj):
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super(ShapeString, self).__init__(obj, "ShapeString")
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_tip = "Text string"
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obj.addProperty("App::PropertyString", "String",
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"Draft", QT_TRANSLATE_NOOP("App::Property", _tip))
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_tip = "Font file name"
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obj.addProperty("App::PropertyFile", "FontFile",
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"Draft", QT_TRANSLATE_NOOP("App::Property", _tip))
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_tip = "Height of text"
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obj.addProperty("App::PropertyLength", "Size",
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"Draft", QT_TRANSLATE_NOOP("App::Property", _tip))
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_tip = "Inter-character spacing"
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obj.addProperty("App::PropertyLength", "Tracking",
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"Draft", QT_TRANSLATE_NOOP("App::Property", _tip))
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def execute(self, obj):
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import Part
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# import OpenSCAD2Dgeom
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import os
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if obj.String and obj.FontFile:
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if obj.Placement:
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plm = obj.Placement
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ff8 = obj.FontFile.encode('utf8') # 1947 accents in filepath
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# TODO: change for Py3?? bytes?
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# Part.makeWireString uses FontFile as char* string
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if sys.version_info.major < 3:
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CharList = Part.makeWireString(obj.String,ff8,obj.Size,obj.Tracking)
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else:
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CharList = Part.makeWireString(obj.String,obj.FontFile,obj.Size,obj.Tracking)
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if len(CharList) == 0:
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App.Console.PrintWarning(translate("draft","ShapeString: string has no wires")+"\n")
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return
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SSChars = []
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# test a simple letter to know if we have a sticky font or not
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sticky = False
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if sys.version_info.major < 3:
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testWire = Part.makeWireString("L",ff8,obj.Size,obj.Tracking)[0][0]
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else:
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testWire = Part.makeWireString("L",obj.FontFile,obj.Size,obj.Tracking)[0][0]
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if testWire.isClosed:
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try:
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testFace = Part.Face(testWire)
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except Part.OCCError:
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sticky = True
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else:
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if not testFace.isValid():
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sticky = True
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else:
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sticky = True
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for char in CharList:
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if sticky:
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for CWire in char:
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SSChars.append(CWire)
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else:
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CharFaces = []
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for CWire in char:
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f = Part.Face(CWire)
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if f:
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CharFaces.append(f)
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# whitespace (ex: ' ') has no faces. This breaks OpenSCAD2Dgeom...
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if CharFaces:
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# s = OpenSCAD2Dgeom.Overlappingfaces(CharFaces).makeshape()
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# s = self.makeGlyph(CharFaces)
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s = self.makeFaces(char)
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SSChars.append(s)
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shape = Part.Compound(SSChars)
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obj.Shape = shape
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if plm:
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obj.Placement = plm
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obj.positionBySupport()
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def makeFaces(self, wireChar):
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import Part
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compFaces=[]
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allEdges = [] # unused variable?
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wirelist=sorted(wireChar,key=(lambda shape: shape.BoundBox.DiagonalLength),reverse=True)
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fixedwire = []
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for w in wirelist:
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compEdges = Part.Compound(w.Edges)
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compEdges = compEdges.connectEdgesToWires()
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fixedwire.append(compEdges.Wires[0])
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wirelist = fixedwire
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sep_wirelist = []
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while len(wirelist) > 0:
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wire2Face = [wirelist[0]]
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face = Part.Face(wirelist[0])
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for w in wirelist[1:]:
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p = w.Vertexes[0].Point
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u,v = face.Surface.parameter(p)
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if face.isPartOfDomain(u,v):
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f = Part.Face(w)
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if face.Orientation == f.Orientation:
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if f.Surface.Axis * face.Surface.Axis < 0:
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w.reverse()
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else:
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if f.Surface.Axis * face.Surface.Axis > 0:
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w.reverse()
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wire2Face.append(w)
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else:
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sep_wirelist.append(w)
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wirelist = sep_wirelist
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sep_wirelist = []
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face = Part.Face(wire2Face)
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face.validate()
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try:
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# some fonts fail here
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if face.Surface.Axis.z < 0.0:
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face.reverse()
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except:
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pass
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compFaces.append(face)
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ret = Part.Compound(compFaces)
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return ret
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def makeGlyph(self, facelist):
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''' turn list of simple contour faces into a compound shape representing a glyph '''
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''' remove cuts, fuse overlapping contours, retain islands '''
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import Part
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if len(facelist) == 1:
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return(facelist[0])
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sortedfaces = sorted(facelist,key=(lambda shape: shape.Area),reverse=True)
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biggest = sortedfaces[0]
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result = biggest
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islands =[]
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for face in sortedfaces[1:]:
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bcfA = biggest.common(face).Area
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fA = face.Area
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difA = abs(bcfA - fA)
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eps = epsilon()
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# if biggest.common(face).Area == face.Area:
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if difA <= eps: # close enough to zero
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# biggest completely overlaps current face ==> cut
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result = result.cut(face)
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# elif biggest.common(face).Area == 0:
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elif bcfA <= eps:
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# island
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islands.append(face)
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else:
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# partial overlap - (font designer error?)
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result = result.fuse(face)
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#glyphfaces = [result]
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wl = result.Wires
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for w in wl:
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w.fixWire()
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glyphfaces = [Part.Face(wl)]
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glyphfaces.extend(islands)
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ret = Part.Compound(glyphfaces) # should we fuse these instead of making compound?
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return ret
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_ShapeString = ShapeString
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