FabLab_Chemnitz/mightyscape-1.1-deprecated
FabLab_Chemnitz/mightyscape-1.1-deprecated
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Added rotation extensions from LaserPrep

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This commit is contained in:
Mario Voigt 2020-08-03 02:15:03 +02:00
parent d332dd370f
commit ad5e3886ba
7 changed files with 256 additions and 0 deletions
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59
extensions/fablabchemnitz_rotate_helper.py Normal file
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#! /usr/bin/env python3
'''
Copyright (C) 2019 Grant Patterson <grant@revoltlabs.co>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
'''
from math import copysign, cos, pi, sin
from inkex import Transform
STEPS = 360
def rotate_matrix(node, a):
bbox = node.bounding_box()
cx = bbox.center_x / 2.0
cy = bbox.center_y / 2.0
return Transform([[cos(a), -sin(a), cx], [sin(a), cos(a), cy]]) * Transform([[1, 0, -cx], [0, 1, -cy]])
def optimal_rotations(node):
step = pi / float(STEPS)
bbox = node.bounding_box()
min_width = bbox.right - bbox.left
min_width_angle = None
min_bbox_area = min_width * (bbox.bottom - bbox.top)
min_bbox_area_angle = None
for i in range(STEPS):
angle = -pi/2.0 + i*step
rotated = node.bounding_box(rotate_matrix(node, angle))
width = rotated.width
height = rotated.height
bbox_area = width * height
if width < min_width:
min_width = width
min_width_angle = angle
if bbox_area < min_bbox_area:
if width > height:
# To keep results similar to min_width_angle, rotate by an
# additional 90 degrees which doesn't affect bbox area.
angle -= copysign(pi/2.0, angle)
min_bbox_area = bbox_area
min_bbox_area_angle = angle
return min_width_angle, min_bbox_area_angle

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extensions/fablabchemnitz_rotate_min_all.inx Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
<_name>Rotations - Find All Optimal</_name>
<id>fablabchemnitz.de.rotateminall</id>
<effect>
<object-type>all</object-type>
<effects-menu>
<submenu _name="FabLab Chemnitz">
<submenu _name="Nesting/Cut Optimization" />
</submenu>
</effects-menu>
</effect>
<script>
<command reldir="extensions" interpreter="python">fablabchemnitz_rotate_min_all.py</command>
</script>
</inkscape-extension>

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extensions/fablabchemnitz_rotate_min_all.py Normal file
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#! /usr/bin/env python3
'''
Copyright (C) 2019 Grant Patterson <grant@revoltlabs.co>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
'''
import gettext
import sys
import inkex
import fablabchemnitz_rotate_helper
from inkex import Transform
import copy
debug = False
error = lambda msg: inkex.errormsg(gettext.gettext(msg))
if debug:
stderr = lambda msg: sys.stderr.write(msg + '\n')
else:
stderr = lambda msg: None
class RotateMinAll(inkex.Effect):
def effect(self):
def duplicateNodes(aList):
clones={}
for id,node in aList.items():
clone=copy.deepcopy(node)
#!!!--> should it be given an id?
#seems to work without this!?!
myid = node.tag.split('}')[-1]
clone.set("id", self.svg.get_unique_id(myid))
node.getparent().append(clone)
clones[clone.get("id")]=clone
return(clones)
for nid, node in self.svg.selected.items():
# set() removes duplicates
angles = set(
# and remove Nones
[x for x in fablabchemnitz_rotate_helper.optimal_rotations(node)
if x is not None])
# Go backwards so we know if we need to duplicate the node for
# multiple rotations. (We don't want to rotate the main node
# before duplicating it.)
for i, angle in reversed(list(enumerate(angles))):
if i > 0:
# Rotate a duplicate of the node
rotate_node = list(duplicateNodes({nid: node}).items())[0][1]
else:
rotate_node = node
rotate_node.transform = fablabchemnitz_rotate_helper.rotate_matrix(rotate_node, angle) * rotate_node.transform
if __name__ == '__main__':
RotateMinAll().run()

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extensions/fablabchemnitz_rotate_min_bbox.inx Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
<_name>Rotations - Minimum Bounding Box Area</_name>
<id>fablabchemnitz.de.rotateminbbox</id>
<effect>
<object-type>all</object-type>
<effects-menu>
<submenu _name="FabLab Chemnitz">
<submenu _name="Nesting/Cut Optimization" />
</submenu>
</effects-menu>
</effect>
<script>
<command reldir="extensions" interpreter="python">fablabchemnitz_rotate_min_bbox.py</command>
</script>
</inkscape-extension>

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extensions/fablabchemnitz_rotate_min_bbox.py Normal file
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#! /usr/bin/env python3
'''
Copyright (C) 2019 Grant Patterson <grant@revoltlabs.co>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
'''
import gettext
import sys
import inkex
import fablabchemnitz_rotate_helper
from inkex import Transform
debug = False
error = lambda msg: inkex.errormsg(gettext.gettext(msg))
if debug:
stderr = lambda msg: sys.stderr.write(msg + '\n')
else:
stderr = lambda msg: None
class RotateMinBBox(inkex.Effect):
def effect(self):
for node in self.svg.selected.values():
min_bbox_angle = fablabchemnitz_rotate_helper.optimal_rotations(node)[1]
if min_bbox_angle is not None:
node.transform = Transform(fablabchemnitz_rotate_helper.rotate_matrix(node, min_bbox_angle)) * node.transform
if __name__ == '__main__':
RotateMinBBox().run()

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extensions/fablabchemnitz_rotate_min_width.inx Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<inkscape-extension xmlns="http://www.inkscape.org/namespace/inkscape/extension">
<_name>Rotations - Minimum Width</_name>
<id>fablabchemnitz.de.rotateminwidth</id>
<effect>
<object-type>all</object-type>
<effects-menu>
<submenu _name="FabLab Chemnitz">
<submenu _name="Nesting/Cut Optimization" />
</submenu>
</effects-menu>
</effect>
<script>
<command reldir="extensions" interpreter="python">fablabchemnitz_rotate_min_width.py</command>
</script>
</inkscape-extension>

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extensions/fablabchemnitz_rotate_min_width.py Normal file
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#! /usr/bin/env python3
'''
Copyright (C) 2019 Grant Patterson <grant@revoltlabs.co>
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
'''
import gettext
import sys
import inkex
import fablabchemnitz_rotate_helper
from inkex import Transform
debug = False
error = lambda msg: inkex.errormsg(gettext.gettext(msg))
if debug:
stderr = lambda msg: sys.stderr.write(msg + '\n')
else:
stderr = lambda msg: None
class RotateMinWidth(inkex.Effect):
def effect(self):
for node in self.svg.selected.values():
min_width_angle = fablabchemnitz_rotate_helper.optimal_rotations(node)[0]
if min_width_angle is not None:
node.transform = fablabchemnitz_rotate_helper.rotate_matrix(node, min_width_angle) * node.transform
if __name__ == '__main__':
RotateMinWidth().run()