Macro Unroll Ruled Surface

Macro Unroll Ruled Surface
Description
The macro allows to unroll ruled surfaces and to draw them on a page. Macro version: 1.1 Last modified: 2022-07-24 Download: ToolBar icon Author: Hervé B., heda
Author
Hervé B., heda
Download
ToolBar icon
Links
Macros recipes How to install macros How to customize toolbars
Macro Version
1.1
Date last modified
2022-07-24
FreeCAD Version(s)
None
Default shortcut
None
See also
None

Description

The macro allows to unroll ruled surfaces and to draw them on a page.

Macro_unrollRuledSurface

Installation

Available in Add-on manager.

Cf Macro for unrolling ruled surfaces

Options

• Number of generatrix
• Scale manual or automatic
• Page format: a3/a4, cartridge (cf FreeCAD templates)
• Group drawings in the same page as possible.

Instruction for use

1. Select ruled surfaces
2. Explode them (cf Draft menu - downgrade)
3. Select the surfaces
4. Execute the macro

Script

The lastest version of the macro is here on the wiki. An earlier version can be found at UnrollRuledSurface.FCMacro but the easiest way to install this macro is through the Addon Manager .

ToolBar Icon

Macro_unrollRuledSurface.py

# -*- coding: utf-8 -*-

#***************************************************************************
#*                                                                         *
#*   Copyright (c) 2013 - DoNovae/Herve BAILLY <hbl13@donovae.com>         *
#*   Copyright (c) 2022 - heda <heda@fc-forum>                             *
#*                                                                         *
#*   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                                                                   *
#*                                                                         *
#***************************************************************************
__Name__ = 'Unroll Ruled Surface'
__Comment__ = 'Unroll of a ruled surface and draw it on a page.'
__Author__ = 'Hervé B., heda'
__Version__ = '1.1'
__Date__ = '2022-07-24'
__License__ = 'LGPL-2.0-or-later'
__Web__ = 'https://www.freecadweb.org/wiki/Macro_Unroll_Ruled_Surface'
__Wiki__ = 'https://www.freecadweb.org/wiki/Macro_Unroll_Ruled_Surface'
__Icon__ = ''
__Help__ = ('Select ruled surfaces, Explode them (cf Draft menu), '
            'Select the surfaces, Execute the macro')
__Status__ = ''
__Requires__ = ''
__Communication__ = ''
__Files__ = ''

__doc__ = """
select a face, or several and run the macro.
a solid needs to be draft/downgraded to get the faces as separate objects

the macro is intended to unroll lofted faces,
function beyond that is (in current version) a bonus

settings are not context aware, all settings not applicable are ignored.
as example, using autoscaling ignores the scale-value in the form


v1.1   (2022-07-24) py3/qt5 compat, cosmetic code changes, minor code tweaks,
       used gridlayout for form, added option to skip drawing,
       added simplistic alternative layout engine
v1.0.1 (2019-02-01) - on git
v1.0   (2013-09-14) - on wiki

note:
- unfolding sometimes works and sometimes not
- should be converted to use techdraw

"""

import os
from PySide import QtGui, QtCore
import FreeCAD, FreeCADGui
import Part, Draft

Vector = FreeCAD.Base.Vector
PrintMessage = FreeCAD.Console.PrintMessage
PrintError = FreeCAD.Console.PrintError

settings = dict()
unroll_l = []
dwgtpl = 'Mod/Drawing/Templates'


#####################################
###   Functions
#####################################

def errorDialog(msg):
    diag = QtGui.QMessageBox(QtGui.QMessageBox.Critical, "Error Message", msg)
    diag.setWindowFlags(QtCore.Qt.WindowStaysOnTopHint)
    diag.exec_()

def ending():
    PrintMessage("UnrollRuledSurface: end.\n")
    PrintMessage("===========================================\n")
    FreeCAD.ActiveDocument.recompute()


def proceed():
    QtGui.QApplication.setOverrideCursor(QtCore.Qt.WaitCursor)

    PrintMessage("===========================================\n")
    PrintMessage("UnrollRuledSurface: start.\n")
    try:
        sts = lambda s: settings.get(s)

        file_name = sts("fname").text()
        pts_nbr = float(sts("dpts").text())
        makedwg = sts("mkdwg").isChecked()
        altlay = sts("altlayout").isChecked()
        scale = float(sts("scale").text()) # ignored if autoscale is set
        scale_auto = sts("autoscale").isChecked()
        edge0 = sts("edge").checkedId() == -2
        a3 = sts("papersize").checkedId() == -3
        cartridge = sts("cartridge").isChecked()
        onedrawing = sts("groupdwg").isChecked()

        PrintMessage("UnrollRuledSurface.file_name: {}\n".format(file_name))
        PrintMessage("UnrollRuledSurface.pts_nbr: {}\n".format(pts_nbr))
        PrintMessage("UnrollRuledSurface.edge0: {}\n".format(edge0))
        PrintMessage("UnrollRuledSurface.makedwg: {}\n".format(makedwg))
        PrintMessage("UnrollRuledSurface.altlay: {}\n".format(altlay))
        PrintMessage("UnrollRuledSurface.scale_check: {}\n".format(scale_auto))
        PrintMessage("UnrollRuledSurface.scale: {}\n".format(scale))
        PrintMessage("UnrollRuledSurface.a3_check: {}\n".format(a3))
        PrintMessage("UnrollRuledSurface.cartridge: {}\n".format(cartridge))
        PrintMessage("UnrollRuledSurface.onedrawing: {}\n".format(onedrawing))
    except:
        msg = "UnrollRuledSurface: wrong inputs...\n"
        PrintError(msg)
        errorDialog(msg)
        QtGui.QApplication.restoreOverrideCursor()
        DialogBox.hide()
        ending()
        return

    QtGui.QApplication.restoreOverrideCursor()
    DialogBox.hide()
    unrollRS = unrollRuledSurface(file_name, pts_nbr, edge0)

    ##  Get selection
    sel = FreeCADGui.Selection.getSelection()
    if not sel:
        PrintMessage("UnrollRuledSurface: no selection...\n")
        ending()
        return

    faceid = 0
    objnames_l, objnames0_l = [], []
    grp = FreeCAD.ActiveDocument.addObject("App::DocumentObjectGroup",
                                           "{}_objs".format(file_name))

    for objid, obji in enumerate(sel):
        shape = obji.Shape
        faces = shape.Faces
        for idx in range(len(faces)):
            msg = "UnrollRuledSurface.proceed: ObjId = {}, faceId = {}\n"
            PrintMessage(msg.format(objid, faceid))
            name = obji.Name
            if len(faces) > 1:
                name = "{}.face_{}".format(name, idx)
            obj = unrollRS.unroll(faces[idx], name)
            obj.ViewObject.Visibility = not makedwg
            grp.addObject(obj)

        objnames_l.append([obj, name])
        objnames0_l.append([obji, name])
        faceid += 1


    if not makedwg:
        ending()
        return


    if altlay:
        draw = Drawing2dAlt(scale, scale_auto, a3)
        n = 4 if onedrawing else 1
        chunks = [objnames_l[i:i + n] for i in range(0, len(objnames_l), n)]
        for i, chunk in enumerate(chunks, start=1):
            draw.drawpage(chunk, "{}_page{:02}".format(file_name, i))

    else:
        idx = 0
        while len(objnames_l) > 0:
            draw = Drawing2d(scale, scale_auto, a3, cartridge, onedrawing,
                             "{}_page{:02}".format(file_name, idx))
            objnames_l = draw.all2d(objnames_l)
            idx += 1
            msg = "UnrollRuledSurface: obj_l = {}\n"
            PrintMessage(msg.format(len(objnames_l)))



def close():
    DialogBox.hide()

def getType(obj):
    return type(obj).__name__


class unrollRuledSurface:
    """
    unroll ruled surfaces
    :file_name: ouput file
    :pts_nbr: nbr point of discretization
    """
    def __init__(self, file_name, pts_nbr, edge0):
        self.doc = FreeCAD.ActiveDocument
        self.file_name = file_name
        self.pts_nbr = int(pts_nbr)
        self.edge0 = edge0
        msg = "UnrollRuledSurface.unroll - file_name: {}, pts_nbr: {}\n"
        PrintMessage(msg.format(file_name, pts_nbr))


    def discretize(self, curve):
        """discretize a curve"""
        if getType(curve) in ('GeomLineSegment', 'GeomCircle'):
            sd = curve.discretize(self.pts_nbr)
        elif getType(curve) == 'GeomBSplineCurve':
            nodes = curve.getPoles()
            spline = Part.BSplineCurve()
            spline.buildFromPoles(nodes)
            sd = spline.discretize(self.pts_nbr)
        else:
            sd = curve.discretize(self.pts_nbr)
        return sd

    def nbpoles(self, curve):
        """find number of poles for a curve"""
        if getType(curve) == 'GeomLineSegment':
            nbpol=1
        elif getType(curve) == 'GeomBSplineCurve':
            nbpol=curve.NbPoles
        elif getType(curve) == 'GeomCircle':
            nbpol=2
        elif getType(curve) == 'GeomBezierCurve':
            nbpol=4
        else:
            nbpol=0

        msg = "UnrollRulrdSurface.nbpole {:s} = {:d}\n"
        PrintMessage(msg.format(getType(curve), nbpol))
        return nbpol

    def unroll(self, face, name):
        """unrolls a face composed of 2 to 4 edges"""
        nbredges = len(face.Edges)
        msg = "UnrollRuledSurface.unroll: Edge Nbr = {}\n"
        PrintMessage(msg.format(nbredges))

        if nbredges == 2:
            e1, e2 = face.Edges
            sd1 = e1.Curve.discretize(self.pts_nbr)
            sd2 = e2.Curve.discretize(self.pts_nbr)

        elif nbredges == 3:
            e1, _, e2 = face.Edges
            sd1 = e1.Curve.discretize(self.pts_nbr)
            sd2 = e2.Curve.discretize(self.pts_nbr)

        else:
            E0, E1, E2, E3, *_ = face.Edges
            # Choose more complexe curve as edge
            nbpol0 = self.nbpoles(E0.Curve)
            nbpol1 = self.nbpoles(E1.Curve)
            nbpol2 = self.nbpoles(E2.Curve)
            nbpol3 = self.nbpoles(E3.Curve)
            msg = ("UnrollRuledSurface.unroll: nbpol0= {:d}, nbpol1= {:d},"
                   " nbpol2= {:d}, nbpol3= {:d}\n")
            PrintMessage(msg.format(nbpol0, nbpol1, nbpol2, nbpol3))

            if self.edge0:
                e1, e2 = E0, E2
                v = self.discretize(E1)
                v0, v1 = v[0], v[self.pts_nbr-1]
            else:
                e1, e2 = E1, E3
                v = self.discretize(E2)
                v0, v1 = v[0], v[self.pts_nbr-1]

            sd1 = self.discretize(e1)
            sd2 = self.discretize(e2)
            # Reverse if curves cross over
            if not (sd2[0].__eq__(v0) or not sd2[0].__eq__(v1)):
                sd2.reverse()

        # Create a polygon object and set its nodes
        devlxy_l = self.devlxyz(sd1, sd2)
        msg = "UnrollRuledSurface.unroll: size devlxy_l: {}\n"
        PrintMessage(msg.format(len(devlxy_l)))
        p = self.doc.addObject("Part::Polygon", name)
        p.Nodes = devlxy_l
        self.doc.recompute()
        FreeCADGui.ActiveDocument.ActiveView.fitAll()
        return p

    def vect_copy(self, vect):
        """returns copy of vector"""
        return vect.add(Vector())

    def vect_cos(self, vect1, vect2):
        """returns cosine angle between 2 vectors"""
        return vect1.dot(vect2) / vect1.Length / vect2.Length

    def vect_sin(self, vect1, vect2):
        """returns absolute sinus angle between 2 vectors"""
        v = Vector()
        v.x = vect1.y * vect2.z - vect1.z * vect2.y
        v.y = vect1.z * vect2.x - vect1.x * vect2.z
        v.z = vect1.x * vect2.y - vect1.y * vect2.x
        return v.Length / vect1.Length / vect2.Length

    def devlxyz(self, vect1, vect2):
        """
        unrolls a face composed of 4 edges
        args: vect1, vect2 --> 2 edges of the shape
        returns: dvlxy
        """
        lenv1, lenv2 = len(vect1), len(vect2)
        if lenv1 != lenv2 or lenv1 != self.pts_nbr or lenv2 != self.pts_nbr:
            msg = ("UnrollRuledSurface.devlxyz: incompatility of sizes vect1,"
                   " vect2, pts_nbr: ({}, {}, {})\n")
            PrintError(msg.format(lenv1, lenv2, self.pts_nbr))
            errorDialog(msg)

        devlxy_l, devl1xy_l, devl2xy_l = [], [], []
        errormax = 0.0
        # Init unroll
        # AB
        a1b1 = vect2[0].sub(vect1[0])
        oa1 = Vector(0, 0, 0)
        devl1xy_l.append(oa1) #A1
        ob1 = Vector(a1b1.Length, 0, 0)
        devl2xy_l.append(ob1) #B1
        #self.draw_line(devl1xy_l[0], devl2xy_l[0])
        #self.draw_line(vect1[0], vect2[0])
        for j in range(1, self.pts_nbr):

            # AB
            ab = vect2[j-1].sub(vect1[j-1])
            #self.draw_line(vect1[j-1], vect2[j-1])

            # AC
            ac = vect1[j].sub(vect1[j-1])

            # BD
            bd = vect2[j].sub(vect2[j-1])

            # CD
            cd = vect2[j].sub(vect1[j])

            # A1B1 in unroll plan
            a1b1 = devl2xy_l[j-1].sub(devl1xy_l[j-1])
            a1b1n = self.vect_copy(a1b1)
            a1b1n.normalize()
            a1b1on = Vector(-a1b1n.y, a1b1n.x, 0)

            # A1C1
            cosalp = self.vect_cos(ab, ac)
            sinalp = self.vect_sin(ab, ac)
            a1c1 = self.vect_copy(a1b1n)
            a1c1.multiply(cosalp * ac.Length)
            v = self.vect_copy(a1b1on)
            v.multiply(sinalp * ac.Length)
            a1c1 = a1c1.add(v)
            oa1 = self.vect_copy(devl1xy_l[j-1])
            oc1 = oa1.add(a1c1)
            devl1xy_l.append(oc1)

            # B1D1
            cosalp = self.vect_cos(ab, bd)
            sinalp = self.vect_sin(ab, bd)
            b1d1 = self.vect_copy(a1b1n)
            b1d1.multiply(cosalp * bd.Length)
            v = self.vect_copy(a1b1on)
            v.multiply(sinalp * bd.Length)
            b1d1 = b1d1.add(v)
            ob1 = self.vect_copy(devl2xy_l[j-1])
            od1 = ob1.add(b1d1)
            devl2xy_l.append(od1)

            # Draw generatrice
            #self.draw_line(devl1xy_l[j], devl2xy_l[j])
            c1d1 = devl2xy_l[j].sub(devl1xy_l[j])
            if ab.Length != 0:
                abl = ab.Length
                errormax = max(errormax, abs(abl - c1d1.Length) / abl)

        msg = "UnrollRuledSurface Error cd,c1d1: {:.1f} %\n"
        PrintMessage(msg.format(errormax*100))

        # Close polygone
        devlxy_l = devl1xy_l
        devl2xy_l.reverse()
        devlxy_l.extend(devl2xy_l)
        v = Vector()
        devlxy_l.append(v)

        return devlxy_l


    def draw_line(self, vect0, vect1):
        """draws a Part.Line between vect0 & vect1"""
        l = Part.LineSegment()
        l.StartPoint = vect0
        l.EndPoint = vect1
        self.doc.addObject("Part::Feature", "Line").Shape = l.toShape()


class Scale:
    """keeps autoscaling to known integers"""
    def __init__(self, scale):
        self.scale = scale if scale >= 1 else 1 / scale
        self.scale = int(self.scale)
        self.inverted = scale >= 1

    def get(self):
        if self.inverted:
            return self.scale, '{}:1'.format(self.scale)
        else:
            return 1/self.scale, '1:{}'.format(self.scale)


class Drawing2dAlt:
    """
    Alternative layout engine (Drawing wb), only does plain templates.
    not much testing done, not perfect, however probably good enough...
    makes 2d drawing with Drawing wb
    - obj_l: list of objects
    """
    # untouched in v1.1
    def __init__(self, scale, scale_auto, a3):

        self.a3 = a3
        self.scale = scale
        self.scale_auto = scale_auto
        if self.a3:
            self.WH = 420, 297
        else:
            self.WH = 297, 210


    def _mkquadrants(self, nbr):
        """lower lefts w/o margin"""
        w, h = self.WH
        w2, h2 = w/2, h/2
        d = (w**2 + h**2)**(1/2)

        q = {1: [[w, h, d], [[0, h]]],
             2: [[w2, h, d/2], [[0, h], [w2, h]]],
             3: [[w2, h2, d/4], [[0, h2], [w2, h2], [0, h]]],
             4: [[w2, h2, d/4], [[0, h2], [w2, h2], [0, h], [w2, h]]]}
        return q.get(nbr)


    def newPage(self, doc, page_name):
        freecad_dir = os.path.join(FreeCAD.getResourceDir(), dwgtpl)
        page = doc.addObject('Drawing::FeaturePage', page_name)
        size = 'A3' if self.a3 else 'A4'
        page.Template = freecad_dir + '/{}_Landscape_plain.svg'.format(size)
        return page


    def drawpage(self, faces, page_name):
        """max 4 per page, simple layout with halfs or quadrants"""
        doc = FreeCAD.ActiveDocument
        page = self.newPage(doc, page_name)
        fontsize = 5 if self.a3 else 7
        [W, H, D], ll = self._mkquadrants(len(faces))
        for [face, name], [x0, y0] in zip(faces, ll):
            bb = face.Shape.BoundBox
            aspect = max(bb.XLength / bb.YLength, bb.YLength / bb.XLength)
            adjusted = max(W / H, H / W) / aspect

            if self.scale_auto:
                scale = D / (bb.DiagonalLength * adjusted)
            else:
                scale = self.scale
            sc, scr = Scale(scale * 0.95).get()

            dx = (W - bb.XLength * sc) / 2
            dy = (H - bb.YLength * sc) / 2
            dyt = dy - fontsize * 2 if dy > fontsize else dy

            Text = doc.addObject('Drawing::FeatureViewAnnotation', f"{name}_txt")
            Text.Text = '{} [{}]'.format(name, scr)
            Text.X = int(x0 + dx + fontsize / 2)
            Text.Y = int(y0 - dyt - fontsize / 2)
            Text.Scale = fontsize

            TopView = doc.addObject('Drawing::FeatureViewPart', name)
            TopView.Source = face
            TopView.Direction = (0, 0, 1)
            TopView.Rotation = 0
            TopView.X = int(x0 + dx)
            TopView.Y = int(y0 - dy)
            TopView.ShowHiddenLines = False
            TopView.Scale = sc
            page.addObject(TopView)
            page.addObject(Text)

        doc.recompute()
        page.ViewObject.doubleClicked()


class Drawing2d:
    """
    makes 2d drawing with Drawing wb (original layout engine)
    - obj_l: list of objects
    """
    # untouched in v1.1
    def __init__(self, scale, scale_auto, a3, cartridge, onedrawing, page_str):
        self.TopX_H = self.TopY_H = 0
        self.TopX_V = self.TopY_V = 0
        self.TopX_Hmax = self.TopY_Hmax = 0
        self.TopX_Vmax = self.TopY_Vmax = 0
        self.a3 = a3
        self.scale = scale
        self.scale_auto = scale_auto
        self.cartridge = cartridge
        self.onedrawing = onedrawing
        self.marge = 6
        if self.a3:
            self.L, self.H = 420, 297
        else:
            self.L, self.H = 297, 210
        self.name = page_str

    def newPage(self):
        freecad_dir = os.path.join(FreeCAD.getResourceDir(), dwgtpl)
        doc = FreeCAD.ActiveDocument
        page = doc.addObject('Drawing::FeaturePage', self.name)
        size = 'A3' if self.a3 else 'A4'
        frame = '' if self.cartridge else '_plain'
        page.Template = freecad_dir + '/{}_Landscape{}.svg'.format(size, frame)
        return page


    def all2d(self, objname_l):
        obj1_l = []
        for objid in range(len(objname_l)):
            if objid == 0 or not self.onedrawing:
                page = self.newPage()
            obj1_l.extend(self.done(objid, objname_l[objid]))
        return obj1_l

    def done(self, idx, objname):
        obj_l = []
        obj, objname = objname
        marge = self.marge
        bb = obj.Shape.BoundBox
        xmax = bb.XMax - bb.XMin
        ymax = bb.YMax - bb.YMin

        if ymax > xmax:
            Draft.rotate(obj, 90)
        Draft.move(obj, Vector(-bb.XMin, -bb.YMin, 0))
        xmax = bb.XMax - bb.XMin
        ymax = bb.YMax - bb.YMin

        scale = min((self.L-4 * marge) / xmax, (self.H-4 * marge) / ymax)

        if (not self.scale_auto) or self.onedrawing:
            scale = self.scale

        PrintMessage("UnrollRuledSurface.drawing: scale= {:.2f}\n".format(scale))


        if idx == 0 or not self.onedrawing:
            PrintMessage("Dawing2d: init\n")
            TopX = self.TopX_H = marge * 2
            TopY = self.TopY_H = marge * 2
            self.TopX_H = self.TopX_H + xmax * scale + marge
            self.TopY_H = self.TopY_H
            self.TopX_Hmax = max(self.TopX_Hmax, self.TopX_H)
            self.TopY_Hmax = max(self.TopY_Hmax,
                                 self.TopY_H + ymax * scale + marge)
            self.TopX_Vmax = max(self.TopX_Vmax, self.TopX_Hmax)
            self.TopX_V = max(self.TopX_Vmax, self.TopX_V)
            self.TopY_V = marge * 2

        elif self.onedrawing:
            if self.TopX_H + xmax * scale < self.L:
                if self.TopY_H + ymax * scale + marge * 2 < self.H:
                    # H Add at right on same horizontal line
                    PrintMessage("Dawing2d: horizontal\n")
                    TopX, TopY = self.TopX_H, self.TopY_H
                    self.TopX_H = self.TopX_H + xmax * scale + marge
                    self.TopX_Hmax = max(self.TopX_Hmax, self.TopX_H)
                    self.TopY_Hmax = max(self.TopY_Hmax,
                                         self.TopY_H + ymax * scale + marge)
                    self.TopX_Vmax = max(self.TopX_Hmax, self.TopX_Vmax)
                    self.TopX_Vmax = max(self.TopX_Vmax, self.TopX_Hmax)
                    self.TopX_V = max(self.TopX_Vmax, self.TopX_V)

                else:
                    # V Add at right on same horizontal line
                    PrintMessage("Dawing2d: vertival\n")
                    if (self.TopX_V + ymax * scale + 2 * marge < self.L
                        and self.TopY_V + xmax * scale + 2 * marge < self.H):
                        Draft.rotate(obj, 90)
                        Draft.move(obj, Vector(-bb.XMin, -bb.YMin, 0))
                        x0 = xmax; xmax = ymax; ymax = x0
                        self.TopX_V = max(self.TopX_Vmax, self.TopX_V)
                        TopX, TopY = self.TopX_V, self.TopY_V
                        self.TopX_V = self.TopX_V + xmax * scale + marge
                        self.TopY_Vmax = max(self.TopY_Vmax,
                                             self.TopY_V + ymax * scale + marge)

                    else:
                        obj_l.append([obj, self.name])
                        return obj_l

        else:
            # H Carriage return
            if self.TopY_Hmax + ymax * scale + self.marge*2 < self.H:
                msg = "Drawing2d: carriage return: {} > {}\n"
                PrintMessage(msg.format(self.TopY_H + ymax * scale, self.H))
                TopX = self.marge * 2
                TopY = self.TopY_Hmax
                self.TopX_H = TopX + xmax * scale + self.marge
                self.TopY_H = TopY
                self.TopX_Hmax = max(self.TopX_Hmax, self.TopX_H)
                self.TopY_Hmax = self.TopY_Hmax + ymax * scale + self.marge
                self.TopX_Vmax = max(self.TopX_Vmax, self.TopX_Hmax)
                self.TopX_V = max(self.TopX_Vmax, self.TopX_V)

            else:
                # V Add at right on same horizontal line
                msg = "Drawing2d: vertival: {} , {}\n"
                PrintMessage(msg.format(self.TopX_V, self.TopX_Vmax))
                if (self.TopX_V + ymax * scale + 2 * marge < self.L
                    and self.TopY_V + xmax * scale + 2 * marge < self.H):
                    Draft.rotate(obj, 90)
                    Draft.move(obj, Vector(-bb.XMin, -bb.YMin, 0))
                    x0 = xmax; xmax = ymax; ymax = x0
                    TopX, TopY = self.TopX_V, self.TopY_V
                    self.TopX_V = self.TopX_V + xmax * scale + marge
                    self.TopY_Vmax = max(self.TopY_Vmax,
                                         self.TopY_V + ymax * scale + marge)

                else:
                    obj_l.append([obj, objname])
                    return obj_l

        doc = FreeCAD.ActiveDocument
        page = doc.getObject(self.name)

        Text = doc.addObject('Drawing::FeatureViewAnnotation', f"{objname}_txt")
        Text.Text = objname
        Text.X = TopX + xmax * scale / 2
        Text.Y = TopY + ymax * scale / 2
        Text.Scale = 2

        TopView = doc.addObject('Drawing::FeatureViewPart', objname)
        TopView.Source = obj
        TopView.Direction = (0, 0, 1)
        TopView.Rotation = 0
        TopView.X = TopX
        TopView.Y = TopY
        TopView.ShowHiddenLines = False
        TopView.Scale = scale
        page.addObject(TopView)
        page.addObject(Text)
        doc.recompute()
        return obj_l




#####################################
###   Dialog Box
#####################################

DialogBox = QtGui.QDialog()
DialogBox.setWindowTitle("UnrollRuledSurface")
la = QtGui.QGridLayout(DialogBox)
la.setSpacing(7)
buttonGrpEdge = QtGui.QButtonGroup(DialogBox)
buttonGrpFormat = QtGui.QButtonGroup(DialogBox)

cols = 4
la.addWidget(QtGui.QLabel("File Name"), 0, 0, 1, cols)
fname = QtGui.QLineEdit("UnrollSurface")
la.addWidget(fname, 1, 0, 1, cols)

la.addWidget(QtGui.QLabel("Discretization Points Nbr"), 2, 0, 1, cols)
dpts = QtGui.QLineEdit("30")
la.addWidget(dpts, 3, 0, 1, 2)

###
la.addWidget(QtGui.QLabel("Generatrices from edge:"), 4, 0, 1, 2)
edgezero = QtGui.QRadioButton("0 to 3")
la.addWidget(edgezero, 4, 2)
edgeone = QtGui.QRadioButton("1 to 4")
la.addWidget(edgeone, 4, 3)
buttonGrpEdge.addButton(edgezero); buttonGrpEdge.addButton(edgeone)
edgezero.setChecked(True)

###
mkdwg = QtGui.QCheckBox("Make drawing")
mkdwg.setChecked(True)
la.addWidget(mkdwg, 5, 0, 1, 2)

altlayout = QtGui.QCheckBox("Alternative layout")
altlayout.setChecked(True)
la.addWidget(altlayout, 5, 2, 1, 2)


###
autoscale = QtGui.QCheckBox("Auto scale")
autoscale.setChecked(True)
la.addWidget(autoscale, 6, 0, 1, 2)

la.addWidget(QtGui.QLabel("Scale"), 6, 2)
scale = QtGui.QLineEdit("1")
la.addWidget(scale, 6, 3)

###
la.addWidget(QtGui.QLabel("Paper size:"), 7, 0, 1, 2)
rba4 = QtGui.QRadioButton("A4")
la.addWidget(rba4, 7, 2)
rba3 = QtGui.QRadioButton("A3")
la.addWidget(rba3, 7, 3)
buttonGrpFormat.addButton(rba4); buttonGrpFormat.addButton(rba3)
rba4.setChecked(True)

###
cartridge = QtGui.QCheckBox("Cartridge")
cartridge.setChecked(True)
la.addWidget(cartridge, 8, 0, 1, 2)

groupdwg = QtGui.QCheckBox("Group drawings in page")
groupdwg.setChecked(True)
la.addWidget(groupdwg, 8, 2, 1, 2)

###
box = QtGui.QDialogButtonBox(DialogBox)
box.setOrientation(QtCore.Qt.Horizontal)
box.setStandardButtons(QtGui.QDialogButtonBox.Cancel|QtGui.QDialogButtonBox.Ok)
la.addWidget(box, 9, 0, 1, cols)

###
settings.update(dict(fname=fname, dpts=dpts, edge=buttonGrpEdge,
                     mkdwg=mkdwg, altlayout=altlayout,
                     autoscale=autoscale, scale=scale,
                     papersize=buttonGrpFormat,
                     cartridge=cartridge, groupdwg=groupdwg))

QtCore.QObject.connect(box, QtCore.SIGNAL("accepted()"), proceed)
QtCore.QObject.connect(box, QtCore.SIGNAL("rejected()"), close)
QtCore.QMetaObject.connectSlotsByName(DialogBox)
DialogBox.show()