Hi folks!
I'm updating my Cura building on OpenBSD 6.8 and with this new dependency (pynest2d) I'm getting compile errors:

[5/10] /usr/ports/pobj/pynest2d-4.8.0-python3/bin/c++ -Dpython_module_pynest2d_EXPORTS -I/usr/ports/pobj/pynest2d-4.8.0-python3/pynest2d-4.8.0/src -I/usr/local/include/python3.8 -I/usr/local/include/polyclipping -I/usr/local/include -O2 -pipe -DLIBNEST2D_GEOMETRIES_clipper -DLIBNEST2D_OPTIMIZERS_nlopt -DLIBNEST2D_THREADING_std -fPIC -DNDEBUG -fPIC -std=gnu++11 -MD -MT CMakeFiles/python_module_pynest2d.dir/src/sippynest2dpart3.cpp.o -MF CMakeFiles/python_module_pynest2d.dir/src/sippynest2dpart3.cpp.o.d -o CMakeFiles/python_module_pynest2d.dir/src/sippynest2dpart3.cpp.o -c src/sippynest2dpart3.cpp
FAILED: CMakeFiles/python_module_pynest2d.dir/src/sippynest2dpart3.cpp.o
/usr/ports/pobj/pynest2d-4.8.0-python3/bin/c++ -Dpython_module_pynest2d_EXPORTS -I/usr/ports/pobj/pynest2d-4.8.0-python3/pynest2d-4.8.0/src -I/usr/local/include/python3.8 -I/usr/local/include/polyclipping -I/usr/local/include -O2 -pipe -DLIBNEST2D_GEOMETRIES_clipper -DLIBNEST2D_OPTIMIZERS_nlopt -DLIBNEST2D_THREADING_std -fPIC -DNDEBUG -fPIC -std=gnu++11 -MD -MT CMakeFiles/python_module_pynest2d.dir/src/sippynest2dpart3.cpp.o -MF CMakeFiles/python_module_pynest2d.dir/src/sippynest2dpart3.cpp.o.d -o CMakeFiles/python_module_pynest2d.dir/src/sippynest2dpart3.cpp.o -c src/sippynest2dpart3.cpp
/usr/ports/pobj/pynest2d-4.8.0-python3/pynest2d-4.8.0/src/ItemGroup.sip:49:25: warning: using the result of an assignment as a condition without parentheses [-Wparentheses]
while(list_item = PyIter_Next(iterator))
~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
/usr/ports/pobj/pynest2d-4.8.0-python3/pynest2d-4.8.0/src/ItemGroup.sip:49:25: note: place parentheses around the assignment to silence this warning
while(list_item = PyIter_Next(iterator))
^
( )
/usr/ports/pobj/pynest2d-4.8.0-python3/pynest2d-4.8.0/src/ItemGroup.sip:49:25: note: use '==' to turn this assignment into an equality comparison
while(list_item = PyIter_Next(iterator))
^
==
/usr/ports/pobj/pynest2d-4.8.0-python3/build-amd64-python3/src/sippynest2dpart3.cpp:283:30: error: no member named 'isDisallowedArea' in 'libnest2d::_ItemClipperLib::Polygon'
sipRes = sipCpp->isDisallowedArea();
~~~~~~ ^
/usr/ports/pobj/pynest2d-4.8.0-python3/build-amd64-python3/src/sippynest2dpart3.cpp:356:21: error: no member named 'markAsDisallowedAreaInBin' in 'libnest2d::_ItemClipperLib::Polygon'
sipCpp->markAsDisallowedAreaInBin(a0);
~~~~~~ ^
1 warning and 2 errors generated.
ninja: build stopped: subcommand failed.
*** Error 1 in . (/usr/ports/devel/cmake/cmake.port.mk:36 'do-build': @cd /usr/ports/pobj/pynest2d-4.8.0-python3/build-amd64-python3 && exec...)
*** Error 2 in . (/usr/ports/infrastructure/mk/bsd.port.mk:2921 '/usr/ports/pobj/pynest2d-4.8.0-python3/build-amd64-python3/.build_done': @c...)
*** Error 2 in /usr/ports/mystuff/cad/ultimaker/pynest2d (/usr/ports/infrastructure/mk/bsd.port.mk:2584 'build': @lock=pynest2d-4.8.0; expo...)

I'm using SIP 4 version.

Do you have some tips to solve it?

Thanks in advance.

Evandro Rathke

nest2d was changed to LGPL:
markfink/nest2D@4e6605d

Hi,
First, thanks for this binding.

I have a very strange problem : When I do the nesting and apply .transformedShape() to my items, they get mirrored...

here an mwe :

import pynest2d as nest

w_p, h_p = 2480, 3508
w, h = 290, 314
bin = nest.Box(w_p, h_p)
items = [
  nest.Item([
    nest.Point(0, 0),
    nest.Point(w, 0),
    nest.Point(w, h),
    nest.Point(0, h),
  ])
]
bin_count = nest.nest(items, bin)
it = items[0]
it_t = it.transformedShape()
pts = [ (it.vertex(i).x(), it.vertex(i).y()) for i in range(4) ]
pts_t = [ (it_t.vertex(i).x(), it_t.vertex(i).y()) for i in range(4) ]
print(pts)
print(pts_t)

I get :

Python 3.10.1 (main, Dec 18 2021, 23:53:45) [GCC 11.1.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 
>>> import pynest2d as nest
>>> 
>>> w_p, h_p = 2480, 3508
>>> w, h = 290, 314
>>> bin = nest.Box(w_p, h_p)
>>> items = [
...   nest.Item([
...     nest.Point(0, 0),
...     nest.Point(w, 0),
...     nest.Point(w, h),
...     nest.Point(0, h),
...   ])
... ]
>>> bin_count = nest.nest(items, bin)
>>> it = items[0]
>>> it_t = it.transformedShape()
>>> pts = [ (it.vertex(i).x(), it.vertex(i).y()) for i in range(4) ]
>>> pts_t = [ (it_t.vertex(i).x(), it_t.vertex(i).y()) for i in range(4) ]
>>> print(pts)
[(0, 0), (290, 0), (290, 314), (0, 314)]
>>> print(pts_t)
[(145, -157), (-145, -157), (-145, 157), (145, 157)]
>>> 

While the initial item "turns" clockwise (with x→ and y↓), the transformed one turns conter-clockwise.

It's not blocking to me if this is an expected behaviour, but it's weird, and if so, I think it should be mentioned in the readme.

My ask also is : is it consistent ? should I expect always all shape to be mirrored or is there situations where they are not ?

Followed the building instructions, now am confused on how to import the module in to a project (or use in a venv).

From the cmake_install I can see the files go somewhere but 'conan build .' doesn't show where.

There are files in build\Release\site-packages which I assumed could just be copied over to the site-packages folder in the venv, that satisfies a pip show but still raises an import error.

I'm attempting to package pynest2d, which depends on your fork of libnest2d.
Please tag a release for libnest2d
thanks!

using the command
conan install . --build=missing --update
generate this error:

 sipbuildtool/0.2.2@ultimaker/stable: ERROR: Traceback (most recent call last):
  File "C:\Program Files\Python39\lib\site-packages\conans\client\generators\__init__.py", line 177, in write_generators
    generator = generator_class(conanfile)
  File "C:\Program Files\Python39\lib\site-packages\conan\tools\microsoft\msbuilddeps.py", line 95, in __init__
    self.configuration = conanfile.settings.build_type
  File "C:\Program Files\Python39\lib\site-packages\conans\model\settings.py", line 266, in __getattr__
    self._check_field(field)
  File "C:\Program Files\Python39\lib\site-packages\conans\model\settings.py", line 262, in _check_field
    raise undefined_field(self._name, field, self.fields, self._parent_value)
conans.errors.ConanException: 'settings.build_type' doesn't exist
'settings' possible configurations are none

ERROR: Error in generator 'MSBuildDeps': 'settings.build_type' doesn't exist
'settings' possible configurations are none

hello hello i am trying to compile cura for gentoo, and i have problem with this dependecie, when i try to compile i get this error

CMake Error at CMakeLists.txt:5 (find_package):
  By not providing "Findnest2d.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "nest2d", but
  CMake did not find one.

  Could not find a package configuration file provided by "nest2d" with any
  of the following names:

    nest2dConfig.cmake
    nest2d-config.cmake

  Add the installation prefix of "nest2d" to CMAKE_PREFIX_PATH or set
  "nest2d_DIR" to a directory containing one of the above files.  If "nest2d"
  provides a separate development package or SDK, be sure it has been
  installed.

previous version had some sort of patch but it doesnt work for this version, i am not good at writing patches, can somebody help me with this out ?
https://bpa.st/Y6UZO <-this is the patch for ver 4.12.1 what is correct one for version 5.2.2?

Hi everyone

If I want to use BottomLeftPlacer I need to chance pynest2d.sip and rebuild the package or there's another way?

Can someone provide a brief code to explain how to use other placers?

Getting an error on running conan install . --build=missing --update

make[2]: *** [src/x86/darwin.lo] Error 1
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2
libffi/3.2.1:
libffi/3.2.1: ERROR: Package '240c2182163325b213ca6886a7614c8ed2bf1738' build failed
libffi/3.2.1: WARN: Build folder /Users/devdesign/.conan/data/libffi/3.2.1/_/_/build/240c2182163325b213ca6886a7614c8ed2bf1738
ERROR: libffi/3.2.1: Error in build() method, line 160
	autotools.make()
	ConanException: Error 2 while executing make -j10

I am trying to package pynest2d for alpine linux. I get the following error:

I am trying to compile this package for alpine linux.

I get a similar error on 4.11.0, 4.12.1

/home/anjan/code/aports/testing/py3-pynest2d/src/pynest2d-4.13-beta/build/src/sippynest2dpart3.cpp: In function 'PyObject* meth_Item_isDisallowedArea(PyObject*, PyObject*)':
/home/anjan/code/aports/testing/py3-pynest2d/src/pynest2d-4.13-beta/build/src/sippynest2dpart3.cpp:281:30: error: 'using Item = class libnest2d::_Item<ClipperLib::Polygon>' has no member named 'isDisallowedAre
'
  281 |             sipRes = sipCpp->isDisallowedArea();
      |                              ^~~~~~~~~~~~~~~~
/home/anjan/code/aports/testing/py3-pynest2d/src/pynest2d-4.13-beta/build/src/sippynest2dpart3.cpp: In function 'PyObject* meth_Item_markAsDisallowedAreaInBin(PyObject*, PyObject*)':
/home/anjan/code/aports/testing/py3-pynest2d/src/pynest2d-4.13-beta/build/src/sippynest2dpart3.cpp:352:21  1 ributor: Anjandev Momi <[email protected]>
: error: 'using Item = class libnest2d::_Item<ClipperLib::Polygon>' has no member named 'markAsDisallowedAreaInBin'
  352 |             sipCpp->markAsDisallowedAreaInBin(a0);
      |                     ^~~~~~~~~~~~~~~~~~~~~~~~~
make[2]: *** [CMakeFiles/python_module_pynest2d.dir/build.make:155: CMakeFiles/python_module_pynest2d.dir/src/sippynest2dpart3.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [CMakeFiles/Makefile2:83: CMakeFiles/python_module_pynest2d.dir/all] Error 2
make: *** [Makefile:136: all] Error 2

I try to Nesting some random Items (100 rectangle of random size), and get this result:

But supposed to get something like this:

I use pynest2d.pyd from UltiMaker Cura 5.4.0.

main part of code related:

from pynest2d import *

volume = Box(2000, 2000)

config = NfpConfig()
config.accuracy = 1.0

# config.alignment = NfpConfig.Alignment.BOTTOM_LEFT
# config.alignment = NfpConfig.Alignment.BOTTOM_RIGHT
# config.alignment = NfpConfig.Alignment.CENTER
# config.alignment = NfpConfig.Alignment.DONT_ALIGN
config.alignment = NfpConfig.Alignment.TOP_LEFT
# config.alignment = NfpConfig.Alignment.TOP_RIGHT

# config.starting_point = NfpConfig.Alignment.BOTTOM_LEFT
# config.starting_point = NfpConfig.Alignment.BOTTOM_RIGHT
# config.starting_point = NfpConfig.Alignment.CENTER
# config.starting_point = NfpConfig.Alignment.DONT_ALIGN
config.starting_point = NfpConfig.Alignment.TOP_LEFT
# config.starting_point = NfpConfig.Alignment.TOP_RIGHT

spacing = 1

num_bins = nest(List_Items, volume, spacing, config)

Had tried all options of alignment, starting_point, get some strange result:

There is an error with this repository's WhiteSource configuration file that needs to be fixed. As a precaution, scans will stop until it is resolved.

Errors:

• "settingsInteritedFrom" attribute provided in Ultimaker/pynest2d/.whitesource points to a non-existent repository or branch: 'Ultimaker/whitesource-config@master'

Hi, a have a set of 5 polygons, but when I run the algorithm, some of the polygons overlaps in the transformed shape.
I checked also by using rotation() and translation() on the original polygons, but the result is same and still incorrect.
Also tried to offset them to be in the positive coordinates - no change of the output...

Any toughts what could be wrong?

Here is the list of the 5 polygons:
[Item([Point(216,-31),Point(176,-31),Point(136,-31),Point(136,-10),Point(136,24),Point(120,24),Point(108,24),Point(108,62),Point(108,100),Point(48,100),Point(-3,100),Point(-41,100),Point(-79,100),Point(-79,56),Point(-79,54),Point(-80,54),Point(-81,54),Point(-81,39),Point(-81,24),Point(-81,24),Point(-109,24),Point(-109,-10),Point(-109,-31),Point(-151,-31),Point(-193,-31),Point(-193,-108),Point(-193,-185),Point(11,-185),Point(216,-185),Point(216,-108)]),Item([Point(80,87),Point(80,99),Point(0,99),Point(-80,99),Point(-80,87),Point(-80,75),Point(-83,75),Point(-128,75),Point(-128,43),Point(-128,41),Point(-156,41),Point(-184,41),Point(-184,-61),Point(-184,-164),Point(-172,-164),Point(-160,-164),Point(0,-164),Point(160,-164),Point(172,-164),Point(184,-164),Point(184,-61),Point(184,41),Point(156,41),Point(128,41),Point(128,43),Point(128,75),Point(83,75),Point(80,75)]),Item([Point(-56,94),Point(-56,87),Point(-59,87),Point(-64,87),Point(-64,79),Point(-64,73),Point(-65,73),Point(-66,73),Point(-66,70),Point(-66,67),Point(-68,67),Point(-76,67),Point(-76,-54),Point(-76,-176),Point(-45,-176),Point(-38,-176),Point(-38,-198),Point(-38,-220),Point(36,-220),Point(111,-220),Point(111,-209),Point(111,-198),Point(111,-195),Point(111,-176),Point(111,-62),Point(111,51),Point(111,122),Point(111,133),Point(111,145),Point(111,157),Point(36,157),Point(-38,157),Point(-38,129),Point(-38,101),Point(-46,101),Point(-56,101)]),Item([Point(-74,-112),Point(-74,-177),Point(-23,-177),Point(3,-177),Point(60,-177),Point(117,-177),Point(117,-69),Point(117,18),Point(117,62),Point(117,106),Point(64,106),Point(11,106),Point(11,93),Point(11,86),Point(8,86),Point(5,86),Point(-26,86),Point(-58,86),Point(-58,76),Point(-58,66),Point(-59,66),Point(-64,66),Point(-64,9),Point(-64,-47),Point(-69,-47),Point(-74,-47)]),Item([Point(-81,117),Point(-88,117),Point(-95,117),Point(-95,15),Point(-95,-86),Point(-95,-97),Point(-95,-126),Point(-72,-126),Point(-49,-126),Point(-7,-126),Point(20,-126),Point(20,-157),Point(20,-188),Point(50,-188),Point(80,-188),Point(80,-156),Point(80,-124),Point(80,-102),Point(80,-70),Point(80,53),Point(80,141),Point(80,163),Point(80,185),Point(50,185),Point(20,185),Point(20,163),Point(20,141),Point(-18,141),Point(-81,141),Point(-81,123)])]

and the output from the pynest2d shows this packing: