Adding upstream version 1.2.2.upstream/1.2.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 443 insertions, 0 deletions

diff --git a/share/extensions/dxf_outlines.py b/share/extensions/dxf_outlines.py
new file mode 100755
index 0000000..4793181
--- /dev/null
+++ b/share/extensions/dxf_outlines.py
@@ -0,0 +1,443 @@
+#!/usr/bin/env python
+# coding=utf-8
+#
+# Copyright (C) 2005,2007,2008 Aaron Spike, aaron@ekips.org
+# Copyright (C) 2008,2010 Alvin Penner, penner@vaxxine.com
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# 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 General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+#
+"""
+This file output script for Inkscape creates a AutoCAD R14 DXF file.
+The spec can be found here: http://www.autodesk.com/techpubs/autocad/acadr14/dxf/index.htm.
+
+ File history:
+ - template dxf_outlines.dxf added Feb 2008 by Alvin Penner
+- ROBO-Master output option added Aug 2008
+- ROBO-Master multispline output added Sept 2008
+- LWPOLYLINE output modification added Dec 2008
+- toggle between LINE/LWPOLYLINE added Jan 2010
+- support for transform elements added July 2010
+- support for layers added July 2010
+- support for rectangle added Dec 2010
+"""
+
+from __future__ import print_function
+
+import inkex
+from inkex import (
+    colors,
+    bezier,
+    Transform,
+    Group,
+    Layer,
+    Use,
+    PathElement,
+    Rectangle,
+    Line,
+    Circle,
+    Ellipse,
+)
+from inkex.localization import inkex_gettext as _
+
+
+def get_matrix(u, i, j):
+    if j == i + 2:
+        return (
+            (u[i] - u[i - 1])
+            * (u[i] - u[i - 1])
+            / (u[i + 2] - u[i - 1])
+            / (u[i + 1] - u[i - 1])
+        )
+    elif j == i + 1:
+        return (
+            (u[i] - u[i - 1]) * (u[i + 2] - u[i]) / (u[i + 2] - u[i - 1])
+            + (u[i + 1] - u[i]) * (u[i] - u[i - 2]) / (u[i + 1] - u[i - 2])
+        ) / (u[i + 1] - u[i - 1])
+    elif j == i:
+        return (
+            (u[i + 1] - u[i])
+            * (u[i + 1] - u[i])
+            / (u[i + 1] - u[i - 2])
+            / (u[i + 1] - u[i - 1])
+        )
+    else:
+        return 0
+
+
+def get_fit(u, csp, col):
+    return (
+        (1 - u) ** 3 * csp[0][col]
+        + 3 * (1 - u) ** 2 * u * csp[1][col]
+        + 3 * (1 - u) * u**2 * csp[2][col]
+        + u**3 * csp[3][col]
+    )
+
+
+class DxfOutlines(inkex.OutputExtension):
+    def add_arguments(self, pars):
+        pars.add_argument("--tab")
+        pars.add_argument("-R", "--ROBO", type=inkex.Boolean, default=False)
+        pars.add_argument("-P", "--POLY", type=inkex.Boolean, default=False)
+        pars.add_argument(
+            "--unit_from_document", type=inkex.Boolean, default=True
+        )  # px
+        pars.add_argument("--units", default="px")  # px
+        pars.add_argument("--encoding", dest="char_encode", default="latin_1")
+        pars.add_argument("--layer_option", default="all")
+        pars.add_argument("--layer_name")
+
+        self.dxf = []
+        self.handle = 255  # handle for DXF ENTITY
+        self.layers = ["0"]
+        self.layer = "0"  # mandatory layer
+        self.layernames = []
+        self.csp_old = [[0.0, 0.0]] * 4  # previous spline
+        self.d = [0.0]  # knot vector
+        self.poly = [[0.0, 0.0]]  # LWPOLYLINE data
+
+    def save(self, stream):
+        stream.write(b"".join(self.dxf))
+
+    def dxf_add(self, str):
+        self.dxf.append(str.encode(self.options.char_encode))
+
+    def dxf_line(self, csp):
+        """Draw a line in the DXF format"""
+        self.handle += 1
+        self.dxf_add(
+            "  0\nLINE\n  5\n%x\n100\nAcDbEntity\n  8\n%s\n 62\n%d\n100\nAcDbLine\n"
+            % (self.handle, self.layer, self.color)
+        )
+        self.dxf_add(
+            " 10\n%f\n 20\n%f\n 30\n0.0\n 11\n%f\n 21\n%f\n 31\n0.0\n"
+            % (csp[0][0], csp[0][1], csp[1][0], csp[1][1])
+        )
+
+    def LWPOLY_line(self, csp):
+        if (
+            abs(csp[0][0] - self.poly[-1][0]) > 0.0001
+            or abs(csp[0][1] - self.poly[-1][1]) > 0.0001
+            or self.color_LWPOLY != self.color
+        ):  # THIS LINE IS NEW
+            self.LWPOLY_output()  # terminate current polyline
+            self.poly = [csp[0]]  # initiallize new polyline
+            self.color_LWPOLY = self.color
+            self.layer_LWPOLY = self.layer
+        self.poly.append(csp[1])
+
+    def LWPOLY_output(self):
+        if len(self.poly) == 1:
+            return
+        self.handle += 1
+        closed = 1
+        if (
+            abs(self.poly[0][0] - self.poly[-1][0]) > 0.0001
+            or abs(self.poly[0][1] - self.poly[-1][1]) > 0.0001
+        ):
+            closed = 0
+        self.dxf_add(
+            "  0\nLWPOLYLINE\n  5\n%x\n100\nAcDbEntity\n  8\n%s\n 62\n%d\n100\nAcDbPolyline\n 90\n%d\n 70\n%d\n"
+            % (
+                self.handle,
+                self.layer_LWPOLY,
+                self.color_LWPOLY,
+                len(self.poly) - closed,
+                closed,
+            )
+        )
+        for i in range(len(self.poly) - closed):
+            self.dxf_add(
+                " 10\n%f\n 20\n%f\n 30\n0.0\n" % (self.poly[i][0], self.poly[i][1])
+            )
+
+    def dxf_spline(self, csp):
+        knots = 8
+        ctrls = 4
+        self.handle += 1
+        self.dxf_add(
+            "  0\nSPLINE\n  5\n%x\n100\nAcDbEntity\n  8\n%s\n 62\n%d\n100\nAcDbSpline\n"
+            % (self.handle, self.layer, self.color)
+        )
+        self.dxf_add(" 70\n8\n 71\n3\n 72\n%d\n 73\n%d\n 74\n0\n" % (knots, ctrls))
+        for i in range(2):
+            for j in range(4):
+                self.dxf_add(" 40\n%d\n" % i)
+        for i in csp:
+            self.dxf_add(" 10\n%f\n 20\n%f\n 30\n0.0\n" % (i[0], i[1]))
+
+    def ROBO_spline(self, csp):
+        """this spline has zero curvature at the endpoints, as in ROBO-Master"""
+        if (
+            abs(csp[0][0] - self.csp_old[3][0]) > 0.0001
+            or abs(csp[0][1] - self.csp_old[3][1]) > 0.0001
+            or abs(
+                (csp[1][1] - csp[0][1]) * (self.csp_old[3][0] - self.csp_old[2][0])
+                - (csp[1][0] - csp[0][0]) * (self.csp_old[3][1] - self.csp_old[2][1])
+            )
+            > 0.001
+        ):
+            self.ROBO_output()  # terminate current spline
+            self.xfit = [csp[0][0]]  # initiallize new spline
+            self.yfit = [csp[0][1]]
+            self.d = [0.0]
+            self.color_ROBO = self.color
+            self.layer_ROBO = self.layer
+        self.xfit += 3 * [0.0]
+        self.yfit += 3 * [0.0]
+        self.d += 3 * [0.0]
+        for i in range(1, 4):
+            j = len(self.d) + i - 4
+            self.xfit[j] = get_fit(i / 3.0, csp, 0)
+            self.yfit[j] = get_fit(i / 3.0, csp, 1)
+            self.d[j] = self.d[j - 1] + bezier.pointdistance(
+                (self.xfit[j - 1], self.yfit[j - 1]), (self.xfit[j], self.yfit[j])
+            )
+        self.csp_old = csp
+
+    def ROBO_output(self):
+        try:
+            import numpy
+            from numpy.linalg import solve
+        except ImportError:
+            inkex.errormsg(
+                _(
+                    "Failed to import the numpy or numpy.linalg modules. "
+                    "These modules are required by the ROBO option."
+                    "Please install them and try again."
+                )
+            )
+            return
+
+        if len(self.d) == 1:
+            return
+        fits = len(self.d)
+        ctrls = fits + 2
+        knots = ctrls + 4
+        self.xfit += 2 * [0.0]  # pad with 2 endpoint constraints
+        self.yfit += 2 * [0.0]
+        self.d += 6 * [0.0]  # pad with 3 duplicates at each end
+        self.d[fits + 2] = self.d[fits + 1] = self.d[fits] = self.d[fits - 1]
+
+        solmatrix = numpy.zeros((ctrls, ctrls), dtype=float)
+        for i in range(fits):
+            solmatrix[i, i] = get_matrix(self.d, i, i)
+            solmatrix[i, i + 1] = get_matrix(self.d, i, i + 1)
+            solmatrix[i, i + 2] = get_matrix(self.d, i, i + 2)
+        solmatrix[fits, 0] = self.d[2] / self.d[fits - 1]  # curvature at start = 0
+        solmatrix[fits, 1] = -(self.d[1] + self.d[2]) / self.d[fits - 1]
+        solmatrix[fits, 2] = self.d[1] / self.d[fits - 1]
+        solmatrix[fits + 1, fits - 1] = (self.d[fits - 1] - self.d[fits - 2]) / self.d[
+            fits - 1
+        ]  # curvature at end = 0
+        solmatrix[fits + 1, fits] = (
+            self.d[fits - 3] + self.d[fits - 2] - 2 * self.d[fits - 1]
+        ) / self.d[fits - 1]
+        solmatrix[fits + 1, fits + 1] = (self.d[fits - 1] - self.d[fits - 3]) / self.d[
+            fits - 1
+        ]
+        xctrl = solve(solmatrix, self.xfit)
+        yctrl = solve(solmatrix, self.yfit)
+        self.handle += 1
+        self.dxf_add(
+            "  0\nSPLINE\n  5\n%x\n100\nAcDbEntity\n  8\n%s\n 62\n%d\n100\nAcDbSpline\n"
+            % (self.handle, self.layer_ROBO, self.color_ROBO)
+        )
+        self.dxf_add(
+            " 70\n0\n 71\n3\n 72\n%d\n 73\n%d\n 74\n%d\n" % (knots, ctrls, fits)
+        )
+        for i in range(knots):
+            self.dxf_add(" 40\n%f\n" % self.d[i - 3])
+        for i in range(ctrls):
+            self.dxf_add(" 10\n%f\n 20\n%f\n 30\n0.0\n" % (xctrl[i], yctrl[i]))
+        for i in range(fits):
+            self.dxf_add(" 11\n%f\n 21\n%f\n 31\n0.0\n" % (self.xfit[i], self.yfit[i]))
+
+    def process_shape(self, node, mat):
+        rgb = (0, 0, 0)
+        style = node.style("stroke")
+        if style is not None and isinstance(style, inkex.Color):
+            rgb = style.to_rgb()
+        hsl = colors.rgb_to_hsl(rgb[0] / 255.0, rgb[1] / 255.0, rgb[2] / 255.0)
+        self.color = 7  # default is blac
+        if hsl[2]:
+            self.color = 1 + (int(6 * hsl[0] + 0.5) % 6)  # use 6 hues
+
+        if not isinstance(node, (PathElement, Rectangle, Line, Circle, Ellipse)):
+            return
+
+        # Transforming /after/ superpath is more reliable than before
+        # because of some issues with arcs in transformations
+        for sub in node.path.to_superpath().transform(Transform(mat) @ node.transform):
+            for i in range(len(sub) - 1):
+                s = sub[i]
+                e = sub[i + 1]
+                if s[1] == s[2] and e[0] == e[1]:
+                    if self.options.POLY:
+                        self.LWPOLY_line([s[1], e[1]])
+                    else:
+                        self.dxf_line([s[1], e[1]])
+                elif self.options.ROBO:
+                    self.ROBO_spline([s[1], s[2], e[0], e[1]])
+                else:
+                    self.dxf_spline([s[1], s[2], e[0], e[1]])
+
+    def process_clone(self, node):
+        """Process a clone node, looking for internal paths"""
+        trans = node.get("transform")
+        x = node.get("x")
+        y = node.get("y")
+        mat = Transform([[1.0, 0.0, 0.0], [0.0, 1.0, 0.0]])
+        if trans:
+            mat @= Transform(trans)
+        if x:
+            mat @= Transform([[1.0, 0.0, float(x)], [0.0, 1.0, 0.0]])
+        if y:
+            mat @= Transform([[1.0, 0.0, 0.0], [0.0, 1.0, float(y)]])
+        # push transform
+        if trans or x or y:
+            self.groupmat.append(Transform(self.groupmat[-1]) @ mat)
+        # get referenced node
+        refid = node.get("xlink:href")
+        refnode = self.svg.getElementById(refid[1:])
+        if refnode is not None:
+            if isinstance(refnode, Group):
+                self.process_group(refnode)
+            elif isinstance(refnode, Use):
+                self.process_clone(refnode)
+            else:
+                self.process_shape(refnode, self.groupmat[-1])
+        # pop transform
+        if trans or x or y:
+            self.groupmat.pop()
+
+    def process_group(self, group):
+        """Process group elements"""
+        if isinstance(group, Layer):
+            style = group.style
+            if (
+                style("display") == "none"
+                and self.options.layer_option
+                and self.options.layer_option == "visible"
+            ):
+                return
+            layer = group.label
+            if self.options.layer_name and self.options.layer_option == "name":
+                if not layer.lower() in self.options.layer_name:
+                    return
+
+            layer = layer.replace(" ", "_")
+            if layer in self.layers:
+                self.layer = layer
+        trans = group.get("transform")
+        if trans:
+            self.groupmat.append(Transform(self.groupmat[-1]) @ Transform(trans))
+        for node in group:
+            try:
+                if isinstance(node, Group):
+                    self.process_group(node)
+                elif isinstance(node, Use):
+                    self.process_clone(node)
+                else:
+                    self.process_shape(node, self.groupmat[-1])
+            except RecursionError as e:
+                raise inkex.AbortExtension(
+                    _(
+                        'Too many nested groups. Please use the "Deep Ungroup" extension first.'
+                    )
+                ) from e  # pylint: disable=line-too-long
+        if trans:
+            self.groupmat.pop()
+
+    def effect(self):
+        # Warn user if name match field is empty
+        if (
+            self.options.layer_option
+            and self.options.layer_option == "name"
+            and not self.options.layer_name
+        ):
+            return inkex.errormsg(
+                _(
+                    "Error: Field 'Layer match name' must be filled when using "
+                    "'By name match' option"
+                )
+            )
+
+        # Split user layer data into a list: "layerA,layerb,LAYERC" becomes ["layera", "layerb", "layerc"]
+        if self.options.layer_name:
+            self.options.layer_name = self.options.layer_name.lower().split(",")
+
+        # References:   Minimum Requirements for Creating a DXF File of a 3D Model By Paul Bourke
+        #              NURB Curves: A Guide for the Uninitiated By Philip J. Schneider
+        #              The NURBS Book By Les Piegl and Wayne Tiller (Springer, 1995)
+        # self.dxf_add("999\nDXF created by Inkscape\n")  # Some programs do not take comments in DXF files (KLayout 0.21.12 for example)
+        if self.options.unit_from_document:
+            unit = self.svg.document_unit
+        else:
+            unit = self.options.units
+        with open(self.get_resource("dxf14_header.txt"), "r") as fhl:
+            header = fhl.read()
+            unit_map = {"px": 0, "in": 1, "ft": 2, "mm": 4, "cm": 5, "m": 6}
+            header = header.replace("<unit specifier>", str(unit_map[unit]))
+            self.dxf_add(header)
+        for node in self.svg.xpath("//svg:g"):
+            if isinstance(node, Layer):
+                layer = node.label
+                self.layernames.append(layer.lower())
+                if (
+                    self.options.layer_name
+                    and self.options.layer_option
+                    and self.options.layer_option == "name"
+                    and not layer.lower() in self.options.layer_name
+                ):
+                    continue
+                layer = layer.replace(" ", "_")
+                if layer and layer not in self.layers:
+                    self.layers.append(layer)
+        self.dxf_add(
+            "  2\nLAYER\n  5\n2\n100\nAcDbSymbolTable\n 70\n%s\n" % len(self.layers)
+        )
+        for i in range(len(self.layers)):
+            self.dxf_add(
+                "  0\nLAYER\n  5\n%x\n100\nAcDbSymbolTableRecord\n100\nAcDbLayerTableRecord\n  2\n%s\n 70\n0\n  6\nCONTINUOUS\n"
+                % (i + 80, self.layers[i])
+            )
+        with open(self.get_resource("dxf14_style.txt"), "r") as fhl:
+            self.dxf_add(fhl.read())
+
+        # Set toplevel transform
+        scale = self.svg.inkscape_scale
+        self.groupmat = [
+            [[scale, 0.0, 0.0], [0.0, -scale, self.svg.viewbox_height * scale]]
+        ]
+        self.process_group(self.svg)
+        if self.options.ROBO:
+            self.ROBO_output()
+        if self.options.POLY:
+            self.LWPOLY_output()
+        with open(self.get_resource("dxf14_footer.txt"), "r") as fhl:
+            self.dxf_add(fhl.read())
+        # Warn user if layer data seems wrong
+        if (
+            self.options.layer_name
+            and self.options.layer_option
+            and self.options.layer_option == "name"
+        ):
+            for layer in self.options.layer_name:
+                if layer not in self.layernames:
+                    inkex.errormsg(_("Warning: Layer '{}' not found!").format(layer))
+
+
+if __name__ == "__main__":
+    DxfOutlines().run()