Python WorkingPlane類代碼示例

    def update(self, line=None, normal=None):
        import WorkingPlane, DraftGeomUtils

        if not normal:
            normal = FreeCAD.DraftWorkingPlane.axis
        if line:
            if isinstance(line, list):
                bp = line[0]
                lvec = line[1].sub(line[0])
            else:
                lvec = DraftGeomUtils.vec(line.Shape.Edges[0])
                bp = line.Shape.Edges[0].Vertexes[0].Point
        elif self.baseline:
            lvec = DraftGeomUtils.vec(self.baseline.Shape.Edges[0])
            bp = self.baseline.Shape.Edges[0].Vertexes[0].Point
        else:
            return
        right = lvec.cross(normal)
        self.cube.width.setValue(lvec.Length)
        p = WorkingPlane.getPlacementFromPoints([bp, bp.add(lvec), bp.add(right)])
        if p:
            self.trans.rotation.setValue(p.Rotation.Q)
        bp = bp.add(lvec.multiply(0.5))
        bp = bp.add(DraftVecUtils.scaleTo(normal, self.cube.depth.getValue() / 2))
        self.pos(bp)

    def __init__(self,wp=None):

        """
        Creates a renderer with a default Draft WorkingPlane
        Use like this:
        
        import ArchVRM
        p = ArchVRM.Renderer()
        p.add(App.ActiveDocument.ActiveObject)
        p.sort()
        p.buildDummy()
        """
        
        self.reset()
        if wp:
            self.wp = wp
        else:
            import WorkingPlane
            self.wp = WorkingPlane.plane()
            
        if DEBUG: print "Renderer initialized on " + str(self.wp)

    def order(self,face,right=False):

        """order(face,[right]): returns a list of vertices
        ordered clockwise. The first vertex will be the
        lefmost one, unless right is True, in which case the
        first vertex will be the rightmost one"""

        verts = [v.Point for v in face.OuterWire.OrderedVertexes]

        # flatten the polygon on the XY plane

        wp = WorkingPlane.plane()
        wp.alignToPointAndAxis(face.CenterOfMass,face.normalAt(0,0))
        pverts = []
        for v in verts:
            vx = DraftVecUtils.project(v,wp.u)
            lx = vx.Length
            if vx.getAngle(wp.u) > 1:
                lx = -lx
            vy = DraftVecUtils.project(v,wp.v)
            ly = vy.Length
            if vy.getAngle(wp.v) > 1:
                ly = -ly
            pverts.append(FreeCAD.Vector(lx,ly,0))
        pverts.append(pverts[0])

        # https://stackoverflow.com/questions/1165647/how-to-determine-if-a-list-of-polygon-points-are-in-clockwise-order

        s = 0
        for i in range(len(pverts)-1):
            s += (pverts[i+1].x-pverts[i].x)*(pverts[i+1].y+pverts[i].y)
        if s < 0:
            verts.reverse()
        elif s == 0:
            print("error computing winding direction")
            return

        return verts

    def onChanged(self, obj, prop):
        if prop in ["Source","RenderingMode","ShowCut"]:
            import Part, DraftGeomUtils
            if hasattr(obj,"Source"):
                if obj.Source:
                    if obj.Source.Objects:
                        objs = Draft.getGroupContents(obj.Source.Objects,walls=True)
                        objs = Draft.removeHidden(objs)
                        # separate spaces
                        self.spaces = []
                        os = []
                        for o in objs:
                            if Draft.getType(o) == "Space":
                                self.spaces.append(o)
                            else:
                                os.append(o)
                        objs = os
                        self.svg = ''
                        fillpattern = '<pattern id="sectionfill" patternUnits="userSpaceOnUse" patternTransform="matrix(5,0,0,5,0,0)"'
                        fillpattern += ' x="0" y="0" width="10" height="10">'
                        fillpattern += '<g>'
                        fillpattern += '<rect width="10" height="10" style="stroke:none; fill:#ffffff" /><path style="stroke:#000000; stroke-width:1" d="M0,0 l10,10" /></g></pattern>'

                        # generating SVG
                        if obj.RenderingMode == "Solid":
                            # render using the Arch Vector Renderer
                            import ArchVRM, WorkingPlane
                            wp = WorkingPlane.plane()
                            wp.setFromPlacement(obj.Source.Placement)
                            wp.inverse()
                            render = ArchVRM.Renderer()
                            render.setWorkingPlane(wp)
                            render.addObjects(objs)
                            if hasattr(obj,"ShowCut"):
                                render.cut(obj.Source.Shape,obj.ShowCut)
                            else:
                                render.cut(obj.Source.Shape)
                            self.svg += render.getViewSVG(linewidth="LWPlaceholder")
                            self.svg += fillpattern
                            self.svg += render.getSectionSVG(linewidth="SWPlaceholder",fillpattern="sectionfill")
                            if hasattr(obj,"ShowCut"):
                                if obj.ShowCut:
                                    self.svg += render.getHiddenSVG(linewidth="LWPlaceholder")
                            # print render.info()

                        else:
                            # render using the Drawing module
                            import Drawing, Part
                            shapes = []
                            hshapes = []
                            sshapes = []
                            p = FreeCAD.Placement(obj.Source.Placement)
                            self.direction = p.Rotation.multVec(FreeCAD.Vector(0,0,1))
                            for o in objs:
                                if o.isDerivedFrom("Part::Feature"):
                                    if o.Shape.isNull():
                                        pass
                                        #FreeCAD.Console.PrintWarning(translate("Arch","Skipping empty object: ")+o.Name)
                                    elif o.Shape.isValid():
                                        if hasattr(obj.Source,"OnlySolids"):
                                            if obj.Source.OnlySolids:
                                                shapes.extend(o.Shape.Solids)
                                            else:
                                                shapes.append(o.Shape)
                                        else:
                                            shapes.extend(o.Shape.Solids)
                                    else:
                                        FreeCAD.Console.PrintWarning(translate("Arch","Skipping invalid object: ")+o.Name)
                            cutface,cutvolume,invcutvolume = ArchCommands.getCutVolume(obj.Source.Shape.copy(),shapes)
                            if cutvolume:
                                nsh = []
                                for sh in shapes:
                                    for sol in sh.Solids:
                                        if sol.Volume < 0:
                                            sol.reverse()
                                        c = sol.cut(cutvolume)
                                        s = sol.section(cutface)
                                        try:
                                            wires = DraftGeomUtils.findWires(s.Edges)
                                            for w in wires:
                                                f = Part.Face(w)
                                                sshapes.append(f)
                                            #s = Part.Wire(s.Edges)
                                            #s = Part.Face(s)
                                        except Part.OCCError:
                                            #print "ArchDrawingView: unable to get a face"
                                            sshapes.append(s)
                                        nsh.extend(c.Solids)
                                        #sshapes.append(s)
                                        if hasattr(obj,"ShowCut"):
                                            if obj.ShowCut:
                                                c = sol.cut(invcutvolume)
                                                hshapes.append(c)
                                shapes = nsh
                            if shapes:
                                self.shapes = shapes
                                self.baseshape = Part.makeCompound(shapes)
                                svgf = Drawing.projectToSVG(self.baseshape,self.direction)
                                if svgf:
                                    svgf = svgf.replace('stroke-width="0.35"','stroke-width="LWPlaceholder"')
#.........這裏部分代碼省略.........

    def isEnabled(self,but):
        "returns true if the given button is turned on"
        for b in self.toolbarButtons:
            if str(b.objectName()) == "SnapButton" + but:
                return (b.isEnabled() and b.isChecked())
        return False

    def show(self):
        "shows the toolbar"
        if not hasattr(self,"toolbar"):
            self.makeSnapToolBar()
        mw = getMainWindow()
        bt = mw.findChild(QtGui.QToolBar,"Draft Snap")
        if not bt:
            mw.addToolBar(self.toolbar)
        self.toolbar.show()

    def setGrid(self):
        "sets the grid, if visible"
        if self.grid:
            if self.grid.Visible:
                self.grid.set()

if not hasattr(FreeCADGui,"Snapper"):
    FreeCADGui.Snapper = Snapper()
if not hasattr(FreeCAD,"DraftWorkingPlane"):
    import WorkingPlane, Draft_rc
    FreeCAD.DraftWorkingPlane = WorkingPlane.plane()
    print FreeCAD.DraftWorkingPlane
    FreeCADGui.addIconPath(":/icons")

def getSVG(section,allOn=False,renderMode="Wireframe",showHidden=False,showFill=False,scale=1,linewidth=1,fontsize=1,techdraw=False,rotation=0):
    """getSVG(section,[allOn,renderMode,showHidden,showFill,scale,linewidth,fontsize]) : 
    returns an SVG fragment from an Arch section plane. If
    allOn is True, all cut objects are shown, regardless if they are visible or not.
    renderMode can be Wireframe (default) or Solid to use the Arch solid renderer. If
    showHidden is True, the hidden geometry above the section plane is shown in dashed line.
    If showFill is True, the cut areas get filled with a pattern"""

    if not section.Objects:
        return
    import Part,DraftGeomUtils
    p = FreeCAD.Placement(section.Placement)
    direction = p.Rotation.multVec(FreeCAD.Vector(0,0,1))
    objs = Draft.getGroupContents(section.Objects,walls=True,addgroups=True)
    if not allOn:
            objs = Draft.removeHidden(objs)
    # separate spaces and Draft objects
    spaces = []
    nonspaces = []
    drafts = []
    windows = []
    cutface = None
    for o in objs:
        if Draft.getType(o) == "Space":
            spaces.append(o)
        elif Draft.getType(o) in ["Dimension","Annotation"]:
            drafts.append(o)
        elif o.isDerivedFrom("Part::Part2DObject"):
            drafts.append(o)
        else:
            nonspaces.append(o)
        if Draft.getType(o) == "Window":
            windows.append(o)
    objs = nonspaces
    svg = ''
    fillpattern = '<pattern id="sectionfill" patternUnits="userSpaceOnUse" patternTransform="matrix(5,0,0,5,0,0)"'
    fillpattern += ' x="0" y="0" width="10" height="10">'
    fillpattern += '<g>'
    fillpattern += '<rect width="10" height="10" style="stroke:none; fill:#ffffff" /><path style="stroke:#000000; stroke-width:1" d="M0,0 l10,10" /></g></pattern>'
    # generating SVG
    if renderMode in ["Solid",1]:
        # render using the Arch Vector Renderer
        import ArchVRM, WorkingPlane
        wp = WorkingPlane.plane()
        wp.setFromPlacement(section.Placement)
        #wp.inverse()
        render = ArchVRM.Renderer()
        render.setWorkingPlane(wp)
        render.addObjects(objs)
        if showHidden:
            render.cut(section.Shape,showHidden)
        else:
            render.cut(section.Shape)
        svg += '<g transform="scale(1,-1)">\n'
        svg += render.getViewSVG(linewidth="LWPlaceholder")
        svg += fillpattern
        svg += render.getSectionSVG(linewidth="SWPlaceholder",fillpattern="sectionfill")
        if showHidden:
            svg += render.getHiddenSVG(linewidth="LWPlaceholder")
        svg += '</g>\n'
        # print render.info()

    else:
        # render using the Drawing module
        import Drawing, Part
        shapes,hshapes,sshapes,cutface,cutvolume,invcutvolume = getCutShapes(objs,section,showHidden)
        if shapes:
            baseshape = Part.makeCompound(shapes)
            svgf = Drawing.projectToSVG(baseshape,direction)
            if svgf:
                svgf = svgf.replace('stroke-width="0.35"','stroke-width="LWPlaceholder"')
                svgf = svgf.replace('stroke-width="1"','stroke-width="LWPlaceholder"')
                svgf = svgf.replace('stroke-width:0.01','stroke-width:LWPlaceholder')
                svg += svgf
        if hshapes:
            hshapes = Part.makeCompound(hshapes)
            svgh = Drawing.projectToSVG(hshapes,direction)
            if svgh:
                svgh = svgh.replace('stroke-width="0.35"','stroke-width="LWPlaceholder"')
                svgh = svgh.replace('stroke-width="1"','stroke-width="LWPlaceholder"')
                svgh = svgh.replace('stroke-width:0.01','stroke-width:LWPlaceholder')
                svgh = svgh.replace('fill="none"','fill="none"\nstroke-dasharray="DAPlaceholder"')
                svg += svgh
        if sshapes:
            svgs = ""
            if showFill:
                #svgs += fillpattern
                svgs += '<g transform="rotate(180)">\n'
                for s in sshapes:
                    if s.Edges:
                        #f = Draft.getSVG(s,direction=direction.negative(),linewidth=0,fillstyle="sectionfill",color=(0,0,0))
                        # temporarily disabling fill patterns
                        f = Draft.getSVG(s,direction=direction.negative(),linewidth=0,fillstyle="#aaaaaa",color=(0,0,0))
                        svgs += f
                svgs += "</g>\n"
            sshapes = Part.makeCompound(sshapes)
            svgs += Drawing.projectToSVG(sshapes,direction)
            if svgs:
                svgs = svgs.replace('stroke-width="0.35"','stroke-width="SWPlaceholder"')
                svgs = svgs.replace('stroke-width="1"','stroke-width="SWPlaceholder"')
#.........這裏部分代碼省略.........

def getSVG(section, renderMode="Wireframe", allOn=False, showHidden=False, scale=1, rotation=0, linewidth=1, lineColor=(0.0,0.0,0.0), fontsize=1, showFill=False, fillColor=(0.8,0.8,0.8), techdraw=False):

    """getSVG(section, [renderMode, allOn, showHidden, scale, rotation,
              linewidth, lineColor, fontsize, showFill, fillColor, techdraw]):

    returns an SVG fragment from an Arch section plane. If
    allOn is True, all cut objects are shown, regardless if they are visible or not.
    renderMode can be Wireframe (default) or Solid to use the Arch solid renderer. If
    showHidden is True, the hidden geometry above the section plane is shown in dashed line.
    If showFill is True, the cut areas get filled with a pattern.
    lineColor -- Color of lines for the renderMode "Wireframe".
    fillColor -- If showFill is True and renderMode is "Wireframe",
                 the cut areas are filled with fillColor.
    """

    if not section.Objects:
        return ""
    import Part,DraftGeomUtils
    p = FreeCAD.Placement(section.Placement)
    direction = p.Rotation.multVec(FreeCAD.Vector(0,0,1))
    objs = Draft.getGroupContents(section.Objects,walls=True,addgroups=True)
    if not allOn:
            objs = Draft.removeHidden(objs)

    # separate spaces and Draft objects
    spaces = []
    nonspaces = []
    drafts = []
    windows = []
    cutface = None
    for o in objs:
        if Draft.getType(o) == "Space":
            spaces.append(o)
        elif Draft.getType(o) in ["Dimension","Annotation","Label"]:
            drafts.append(o)
        elif o.isDerivedFrom("Part::Part2DObject"):
            drafts.append(o)
        else:
            nonspaces.append(o)
        if Draft.getType(o) == "Window":
            windows.append(o)
    objs = nonspaces

    archUserParameters = FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Arch")
    scaledLineWidth = linewidth/scale
    svgLineWidth = str(scaledLineWidth) + 'px'
    st = archUserParameters.GetFloat("CutLineThickness",2)
    svgCutLineWidth = str(scaledLineWidth * st) + 'px'
    yt = archUserParameters.GetFloat("SymbolLineThickness",0.6)
    svgSymbolLineWidth = str(linewidth * yt)
    hiddenPattern = archUserParameters.GetString("archHiddenPattern","30,10")
    svgHiddenPattern = hiddenPattern.replace(" ","")
    fillpattern = '<pattern id="sectionfill" patternUnits="userSpaceOnUse" patternTransform="matrix(5,0,0,5,0,0)"'
    fillpattern += ' x="0" y="0" width="10" height="10">'
    fillpattern += '<g>'
    fillpattern += '<rect width="10" height="10" style="stroke:none; fill:#ffffff" /><path style="stroke:#000000; stroke-width:1" d="M0,0 l10,10" /></g></pattern>'
    svgLineColor = Draft.getrgb(lineColor)
    svg = ''

    # reading cached version
    svgcache = None
    if hasattr(section.Proxy,"svgcache") and section.Proxy.svgcache:
        svgcache = section.Proxy.svgcache[0]
        if section.Proxy.svgcache[1] != renderMode:
            svgcache = None
        if section.Proxy.svgcache[2] != showHidden:
            svgcache = None
        if section.Proxy.svgcache[3] != showFill:
            svgcache = None

    # generating SVG
    if renderMode in ["Solid",1]:
        if not svgcache:
            svgcache = ''
            # render using the Arch Vector Renderer
            import ArchVRM, WorkingPlane
            wp = WorkingPlane.plane()
            wp.setFromPlacement(section.Placement)
            #wp.inverse()
            render = ArchVRM.Renderer()
            render.setWorkingPlane(wp)
            render.addObjects(objs)
            if showHidden:
                render.cut(section.Shape,showHidden)
            else:
                render.cut(section.Shape)
            svgcache += '<g transform="scale(1,-1)">\n'
            svgcache += render.getViewSVG(linewidth="SVGLINEWIDTH")
            svgcache += fillpattern
            svgcache += render.getSectionSVG(linewidth="SVGCUTLINEWIDTH",
                                        fillpattern="sectionfill")
            if showHidden:
                svgcache += render.getHiddenSVG(linewidth="SVGLINEWIDTH")
            svgcache += '</g>\n'
            # print(render.info())
            section.Proxy.svgcache = [svgcache,renderMode,showHidden,showFill]
    else:
        if not svgcache:
            svgcache = ""
            # render using the Drawing module
#.........這裏部分代碼省略.........

def getSVG(section,allOn=False,renderMode="Wireframe",showHidden=False,showFill=False,scale=1,linewidth=1,fontsize=1):
    """getSVG(section,[allOn,renderMode,showHidden,showFill,scale,linewidth,fontsize]) : 
    returns an SVG fragment from an Arch section plane. If
    allOn is True, all cut objects are shown, regardless if they are visible or not.
    renderMode can be Wireframe (default) or Solid to use the Arch solid renderer. If
    showHidden is True, the hidden geometry above the section plane is shown in dashed line.
    If showFill is True, the cut areas get filled with a pattern"""

    if not section.Objects:
        return
    import DraftGeomUtils
    p = FreeCAD.Placement(section.Placement)
    direction = p.Rotation.multVec(FreeCAD.Vector(0,0,1))
    objs = Draft.getGroupContents(section.Objects,walls=True,addgroups=True)
    if not allOn:
            objs = Draft.removeHidden(objs)
    # separate spaces
    spaces = []
    nonspaces = []
    for o in objs:
        if Draft.getType(o) == "Space":
            spaces.append(o)
        else:
            nonspaces.append(o)
    objs = nonspaces
    svg = ''
    fillpattern = '<pattern id="sectionfill" patternUnits="userSpaceOnUse" patternTransform="matrix(5,0,0,5,0,0)"'
    fillpattern += ' x="0" y="0" width="10" height="10">'
    fillpattern += '<g>'
    fillpattern += '<rect width="10" height="10" style="stroke:none; fill:#ffffff" /><path style="stroke:#000000; stroke-width:1" d="M0,0 l10,10" /></g></pattern>'

    # generating SVG
    if renderMode == "Solid":
        # render using the Arch Vector Renderer
        import ArchVRM, WorkingPlane
        wp = WorkingPlane.plane()
        wp.setFromPlacement(section.Placement)
        #wp.inverse()
        render = ArchVRM.Renderer()
        render.setWorkingPlane(wp)
        render.addObjects(objs)
        if showHidden:
            render.cut(section.Shape,showHidden)
        else:
            render.cut(section.Shape)
        svg += '<g transform="scale(1,-1)">\n'
        svg += render.getViewSVG(linewidth="LWPlaceholder")
        svg += fillpattern
        svg += render.getSectionSVG(linewidth="SWPlaceholder",fillpattern="sectionfill")
        if showHidden:
            svg += render.getHiddenSVG(linewidth="LWPlaceholder")
        svg += '</g>\n'
        # print render.info()

    else:
        # render using the Drawing module
        import Drawing, Part
        shapes = []
        hshapes = []
        sshapes = []
        for o in objs:
            if o.isDerivedFrom("Part::Feature"):
                if o.Shape.isNull():
                    pass
                elif o.Shape.isValid():
                    if section.OnlySolids:
                        shapes.extend(o.Shape.Solids)
                    else:
                        shapes.append(o.Shape)
                else:
                    print section.Label,": Skipping invalid object:",o.Label
        cutface,cutvolume,invcutvolume = ArchCommands.getCutVolume(section.Shape.copy(),shapes)
        if cutvolume:
            nsh = []
            for sh in shapes:
                for sol in sh.Solids:
                    if sol.Volume < 0:
                        sol.reverse()
                    c = sol.cut(cutvolume)
                    s = sol.section(cutface)
                    try:
                        wires = DraftGeomUtils.findWires(s.Edges)
                        for w in wires:
                            f = Part.Face(w)
                            sshapes.append(f)
                        #s = Part.Wire(s.Edges)
                        #s = Part.Face(s)
                    except Part.OCCError:
                        #print "ArchDrawingView: unable to get a face"
                        sshapes.append(s)
                    nsh.extend(c.Solids)
                    #sshapes.append(s)
                    if showHidden:
                        c = sol.cut(invcutvolume)
                        hshapes.append(c)
            shapes = nsh
        if shapes:
            baseshape = Part.makeCompound(shapes)
            svgf = Drawing.projectToSVG(baseshape,direction)
            if svgf:
#.........這裏部分代碼省略.........

#*   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  *
#*   USA                                                                   *
#*                                                                         *
#***************************************************************************

import FreeCADGui , WorkingPlane, math, re
from pivy import coin
from FreeCAD import Vector
from drawGui import *
#from draftlibs import fcvec, fcgeo
import fcvec, fcgeo
from functools import partial
import Part
            
# sets the default working plane
plane = WorkingPlane.plane()
FreeCAD.DDADockWidget = plane
plane.alignToPointAndAxis(Vector(0, 0, 0), Vector(0, 0, 1), 0)


#---------------------------------------------------------------------------
# Trackers
#---------------------------------------------------------------------------

class Tracker:
    "A generic Draft Tracker, to be used by other specific trackers"
    # 輔助繪圖工具
    def __init__(self, dotted=False, scolor=None, swidth=None, children=[], ontop=False):
        self.ontop = ontop
        color = coin.SoBaseColor()
        color.rgb = scolor or FreeCADGui.DDADockWidget.getDefaultColor("ui")

def getSVG(obj,scale=1,linewidth=0.35,fontsize=12,fillstyle="shape color",direction=None,linestyle=None,color=None,linespacing=None,techdraw=False,rotation=0):
    '''getSVG(object,[scale], [linewidth],[fontsize],[fillstyle],[direction],[linestyle],[color],[linespacing]):
    returns a string containing a SVG representation of the given object,
    with the given linewidth and fontsize (used if the given object contains
    any text). You can also supply an arbitrary projection vector. the
    scale parameter allows to scale linewidths down, so they are resolution-independant.'''

    # if this is a group, gather all the svg views of its children
    if hasattr(obj,"isDerivedFrom"):
        if obj.isDerivedFrom("App::DocumentObjectGroup"):
            svg = ""
            for child in obj.Group:
                svg += getSVG(child,scale,linewidth,fontsize,fillstyle,direction,linestyle,color,linespacing,techdraw)
            return svg

    pathdata = []
    svg = ""
    linewidth = float(linewidth)/scale
    fontsize = (float(fontsize)/scale)/2
    if linespacing:
        linespacing = float(linespacing)/scale
    else:
        linespacing = 0.5
    #print obj.Label," line spacing ",linespacing,"scale ",scale
    pointratio = .75 # the number of times the dots are smaller than the arrow size
    plane = None
    if direction:
        if isinstance(direction,FreeCAD.Vector):
            if direction != Vector(0,0,0):
                plane = WorkingPlane.plane()
                plane.alignToPointAndAxis_SVG(Vector(0,0,0),direction.negative().negative(),0)
        elif isinstance(direction,WorkingPlane.plane):
            plane = direction
    stroke = "#000000"
    if color:
        if "#" in color:
            stroke = color
        else:
            stroke = getrgb(color)
    elif gui:
        if hasattr(obj,"ViewObject"):
            if hasattr(obj.ViewObject,"LineColor"):
                stroke = getrgb(obj.ViewObject.LineColor)


    def getPath(edges=[],wires=[],pathname=None):
        import Part,DraftGeomUtils
        svg = "<path "
        if pathname is None:
            svg += 'id="%s" ' % obj.Name
        elif pathname != "":
            svg += 'id="%s" ' % pathname
        svg += ' d="'
        if not wires:
            egroups = Part.sortEdges(edges)
        else:
            egroups = []
            for w in wires:
                w1=w.copy()
                w1.fixWire()
                egroups.append(Part.__sortEdges__(w1.Edges))
        for egroupindex, edges in enumerate(egroups):
            edata = ""
            vs=() #skipped for the first edge
            for edgeindex,e in enumerate(edges):
                previousvs = vs
                # vertexes of an edge (reversed if needed)
                vs = e.Vertexes
                if previousvs:
                    if (vs[0].Point-previousvs[-1].Point).Length > 1e-6:
                        vs.reverse()
                if edgeindex == 0:
                    v = getProj(vs[0].Point, plane)
                    edata += 'M '+ str(v.x) +' '+ str(v.y) + ' '
                else:
                    if (vs[0].Point-previousvs[-1].Point).Length > 1e-6:
                        raise ValueError('edges not ordered')
                iscircle = DraftGeomUtils.geomType(e) == "Circle"
                isellipse = DraftGeomUtils.geomType(e) == "Ellipse"
                if iscircle or isellipse:
                    import math
                    if hasattr(FreeCAD,"DraftWorkingPlane"):
                        drawing_plane_normal = FreeCAD.DraftWorkingPlane.axis
                    else:
                        drawing_plane_normal = FreeCAD.Vector(0,0,1)
                    if plane: drawing_plane_normal = plane.axis
                    c = e.Curve
                    if round(c.Axis.getAngle(drawing_plane_normal),2) in [0,3.14]:
                        occversion = Part.OCC_VERSION.split(".")
                        done = False
                        if (int(occversion[0]) >= 7) and (int(occversion[1]) >= 1):
                            # if using occ >= 7.1, use HLR algorithm
                            import Drawing
                            snip = Drawing.projectToSVG(e,drawing_plane_normal)
                            if snip:
                                try:
                                    a = "A " + snip.split("path d=\"")[1].split("\"")[0].split("A")[1]
                                except:
                                    pass
                                else:
#.........這裏部分代碼省略.........