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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 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 | # SPDX-License-Identifier: LGPL-2.1-or-later
# -*- coding: utf8 -*-
# ***************************************************************************
# * Copyright (c) 2009 Yorik van Havre <yorik@uncreated.net> *
# * Copyright (c) 2020 Eliud Cabrera Castillo <e.cabrera-castillo@tum.de> *
# * *
# * 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 *
# * *
# ***************************************************************************
"""Provides functions to return the DXF representation of various shapes."""
## @package dxf
# \ingroup draftfunctions
# \brief Provides functions to return the DXF representation of shapes.
import lazy_loader.lazy_loader as lz
import FreeCAD as App
import DraftVecUtils
import WorkingPlane
import draftutils.utils as utils
from draftutils.messages import _wrn
# Delay import of module until first use because it is heavy
Part = lz.LazyLoader("Part", globals(), "Part")
DraftGeomUtils = lz.LazyLoader("DraftGeomUtils", globals(), "DraftGeomUtils")
TechDraw = lz.LazyLoader("TechDraw", globals(), "TechDraw")
## \addtogroup draftfunctions
# @{
def _get_proj(vec, plane=None):
"""Get a projection of the vector in the plane's u and v directions.
TODO: check if the same function for SVG and DXF projection can be used
so that this function is not just duplicated code.
This function may also be present elsewhere, like `WorkingPlane`
or `DraftGeomUtils`, so we should avoid code duplication.
"""
if not plane:
return vec
nx = DraftVecUtils.project(vec, plane.u)
ny = DraftVecUtils.project(vec, plane.v)
return App.Vector(nx.Length, ny.Length, 0)
def get_dxf(obj, direction=None):
"""Return a DXF entity from the given object.
If direction is given, the object is projected in 2D.
"""
plane = None
result = ""
if obj.isDerivedFrom("TechDraw::DrawView"):
if obj.Source.isDerivedFrom("App::DocumentObjectGroup"):
for o in obj.Source.Group:
result += get_dxf(o, obj.Direction)
else:
result += get_dxf(obj.Source, obj.Direction)
return result
if direction and isinstance(direction, App.Vector):
if direction != App.Vector(0, 0, 0):
plane = WorkingPlane.PlaneBase()
plane.align_to_point_and_axis(App.Vector(0, 0, 0), direction)
if utils.get_type(obj) in ("Dimension", "LinearDimension"):
p1 = _get_proj(obj.Start, plane=plane)
p2 = _get_proj(obj.End, plane=plane)
p3 = _get_proj(obj.Dimline, plane=plane)
result += "0\nDIMENSION\n8\n0\n62\n0\n3\nStandard\n70\n1\n"
result += "10\n" + str(p3.x) + "\n20\n" + str(p3.y) + "\n30\n" + str(p3.z) + "\n"
result += "13\n" + str(p1.x) + "\n23\n" + str(p1.y) + "\n33\n" + str(p1.z) + "\n"
result += "14\n" + str(p2.x) + "\n24\n" + str(p2.y) + "\n34\n" + str(p2.z) + "\n"
elif utils.get_type(obj) == "Annotation":
# Only for App::Annotation
p = _get_proj(obj.Position, plane=plane)
count = 0
for t in obj.LabeLtext:
result += "0\nTEXT\n8\n0\n62\n0\n"
result += "10\n"
result += str(p.x) + "\n20\n"
result += str(p.y + count) + "\n30\n"
result += str(p.z) + "\n"
result += "40\n1\n"
result += "1\n" + str(t) + "\n"
result += "7\nSTANDARD\n"
count += 1
elif hasattr(obj, "Shape"):
# TODO do this the Draft way, for ex. using polylines and rectangles
if not direction:
direction = App.Vector(0, 0, -1)
if DraftVecUtils.isNull(direction):
direction = App.Vector(0, 0, -1)
try:
d = TechDraw.projectToDXF(obj.Shape, direction)
except Exception:
# TODO: trap only specific exception.
# Impossible to generate DXF from Shape? Which exception is throw?
_wrn("get_dxf: " "unable to project '{}' to {}".format(obj.Label, direction))
else:
result += d
else:
_wrn("get_dxf: unsupported object, '{}'".format(obj.Label))
return result
def getDXF(obj, direction=None):
"""Return DXF string of the object. DEPRECATED. Use 'get_dxf'."""
utils.use_instead("get_dxf")
return get_dxf(obj, direction=direction)
## @}
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