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PEP8

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Michael Schwarz 2017-09-20 20:33:29 +02:00
parent 673a546066
commit 3566dbc943
9 changed files with 779 additions and 655 deletions
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20
generate_sources.sh
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@ -6,16 +6,16 @@ current_file_name=$1
# This function should be called for each generated file with the file's name as the first argument and the command to call to produce the file's content as the remaining arguments. # This function should be called for each generated file with the file's name as the first argument and the command to call to produce the file's content as the remaining arguments.
function generate_file() { function generate_file() {
file_name=$1 file_name=$1
shift shift
generate_command=("$@") generate_command=("$@")
if ! [ "$current_file_name" ]; then if ! [ "$current_file_name" ]; then
echo "$file_name" echo "$file_name"
elif [ "$current_file_name" == "$file_name" ]; then elif [ "$current_file_name" == "$file_name" ]; then
mkdir -p "$(dirname "$file_name")" mkdir -p "$(dirname "$file_name")"
"${generate_command[@]}" > "$file_name" "${generate_command[@]}" > "$file_name"
fi fi
} }
# Call generate_file for each file to be generated. # Call generate_file for each file to be generated.

193
readme.md
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@ -2,49 +2,71 @@
## Repository structure ## Repository structure
This repository, as it is maintained on [GitHub](http://github.com/Feuermurmel/openscad-template), contains two important branches, `master` and `examples`. `master` contains an empty project which is ready to be cloned and used for new project. This repository, as it is maintained on
[GitHub](http://github.com/Feuermurmel/openscad-template), contains two
important branches, `master` and `examples`. `master` contains an empty project
which is ready to be cloned and used for new project.
Branch `examples` additionally contains a few example source files which are ready to be compiled. The root directory on that branch also contains a second text document `examples.creole`, describing the example project in more detail. Branch `examples` additionally contains a few example source files which are
ready to be compiled. The root directory on that branch also contains a second
text document `examples.creole`, describing the example project in more detail.
## Prerequisites ## Prerequisites
- OpenSCAD snapshot > 2014.11.05 - OpenSCAD snapshot > 2014.11.05
- Used to compile OpenSCAD source files to STL. - Used to compile OpenSCAD source files to STL.
- A recent development snapshot is recommended, e.g. version 2014.11.05 or later. - A recent development snapshot is recommended, e.g. version 2014.11.05 or
- The current release version (2014.03) generates invalid dependency information if the path to the project contains spaces or other characters that need to be treated specially in a makefile and also has trouble with 2D shapes containing holes. The current development version solves these problems. later.
- The current release version (2014.03) generates invalid dependency
information if the path to the project contains spaces or other
characters that need to be treated specially in a makefile and also
has trouble with 2D shapes containing holes. The current development
version solves these problems.
- Inkscape > 0.91 - Inkscape > 0.91
- Used to export DXF files to SVG. - Used to export DXF files to SVG.
- Recommended to edit SVG files, especially if importing of separate layers in OpenSCAD is needed. - Recommended to edit SVG files, especially if importing of separate layers
- At least version 0.91 (or maybe some earlier development snapshot) is necessary because the command line verbs used to transform and massage an SVG prior to export have only recently been added. in OpenSCAD is needed.
- At least version 0.91 (or maybe some earlier development snapshot) is
necessary because the command line verbs used to transform and massage an
SVG prior to export have only recently been added.
- Python 2.7 - Python 2.7
- Used for to run the plugin that exports DXF to SVG and to run scripts that wrap the OpenSCAD command line tool and work around problems with generation of dependency information in OpenSCAD. - Used for to run the plugin that exports DXF to SVG and to run scripts
- Should already be installed as a dependency to Inkscape. The most recent version of Python 2.7 is recommended. that wrap the OpenSCAD command line tool and work around problems with
generation of dependency information in OpenSCAD.
- Should already be installed as a dependency to Inkscape. The most recent
version of Python 2.7 is recommended.
- Asymptote [0] - Asymptote [0]
- Used to compile Asymptote files to PDF. - Used to compile Asymptote files to PDF.
- Recommended when creating Vector cutting projects for Epilog laser cutters. - Recommended when creating Vector cutting projects for Epilog laser
cutters.
[0]: This project was tested with Asymptote Version 2.35. Earlier Versions will probably also work. [0]: This project was tested with Asymptote Version 2.35. Earlier Versions will
probably also work.
### Explicitly specifying paths to binaries ### Explicitly specifying paths to binaries
If any of the required binaries is not available on `$PATH` or a different version should be used, the paths to these binaries can be configured by creating a file called `config.mk` in the same directory as the makefile. There, variables can be set to the absolute or relative paths to these binaries. For example: If any of the required binaries is not available on `$PATH` or a different
version should be used, the paths to these binaries can be configured by
creating a file called `config.mk` in the same directory as the makefile.
There, variables can be set to the absolute or relative paths to these
binaries. For example:
# Path to the OpenSCAD binary # Path to the OpenSCAD binary
OPENSCAD := /Applications/OpenSCAD.app/Contents/MacOS/OpenSCAD OPENSCAD := /Applications/OpenSCAD.app/Contents/MacOS/OpenSCAD
# Path to the Inkscape binary # Path to the Inkscape binary
INKSCAPE := /opt/local/bin/inkscape INKSCAPE := /opt/local/bin/inkscape
# Path to the Python 2.7 binary # Path to the Python 2.7 binary
PYTHON := /opt/local/bin/python2.7 PYTHON := /opt/local/bin/python2.7
# Path to the Asymptote binary # Path to the Asymptote binary
ASYMPTOTE := /opt/local/bin/asy ASYMPTOTE := /opt/local/bin/asy
## Supported file types ## Supported file types
@ -53,63 +75,104 @@ If any of the required binaries is not available on `$PATH` or a different versi
Any file whose name ends in `.svg` may be used from an OpenSCAD file like this: Any file whose name ends in `.svg` may be used from an OpenSCAD file like this:
import("file.dxf"); import("file.dxf");
The makefile will automatically convert the SVG file to a DXF file when building the project. If Inkscape is used to edit the SVG file, multiple layers can be created which can then be imported individually: The makefile will automatically convert the SVG file to a DXF file when
building the project. If Inkscape is used to edit the SVG file, multiple layers
can be created which can then be imported individually:
import("file.dxf", "background"); import("file.dxf", "background");
The DXF export supports all shapes supported by Inkscape (e.g. rectangles, circles, paths, spiro lines, text, …). Before the objects are exported, all objects are converted to paths and combined using the union operation. For objects which have a stroke style, the stroke instead of the filled area is converted to a path. Then, the resulting path is converted to a set of line segments which closely follow the curved parts of the path. The resulting line segments are exported to DXF and combined to the original shapes when imported in OpenSCAD. For these transformations to work, the objects need to be placed in Inkscape layers. The DXF export supports all shapes supported by Inkscape (e.g. rectangles,
circles, paths, spiro lines, text, …). Before the objects are exported, all
objects are converted to paths and combined using the union operation. For
objects which have a stroke style, the stroke instead of the filled area is
converted to a path. Then, the resulting path is converted to a set of line
segments which closely follow the curved parts of the path. The resulting line
segments are exported to DXF and combined to the original shapes when imported
in OpenSCAD. For these transformations to work, the objects need to be placed
in Inkscape layers.
OpenSCAD itself does not define which unit is used to measure lengths [1]. Inkscape OTOH allows the user to define a document wide unit as well as using different units when specifying the size and position of shapes. When exporting the SVG document using Inkscape, all numbers are converted to the unit specified under _General_ in Inkscape's _Document Properties_ dialog. These numbers are the written to the DXF document and used OpenSCAD directly. OpenSCAD itself does not define which unit is used to measure lengths [1].
Inkscape OTOH allows the user to define a document wide unit as well as using
different units when specifying the size and position of shapes. When exporting
the SVG document using Inkscape, all numbers are converted to the unit
specified under _General_ in Inkscape's _Document Properties_ dialog. These
numbers are the written to the DXF document and used OpenSCAD directly.
DXF and OpenSCAD both use a right-handed coordinate system (the Y axis runs up while the X-axis runs to the right). While SVG uses a left-handed coordinate system (the Y axis runs down instead). But Inkscape, surprisingly, also uses a right-handed coordinate system. The DXF export script honors this and places the origin of the document in the lower left corner when exporting the document. DXF and OpenSCAD both use a right-handed coordinate system (the Y axis runs up
while the X-axis runs to the right). While SVG uses a left-handed coordinate
system (the Y axis runs down instead). But Inkscape, surprisingly, also uses a
right-handed coordinate system. The DXF export script honors this and places
the origin of the document in the lower left corner when exporting the
document.
[1]: Although millimeters seems to be the predominant unit. [1]: Although millimeters seems to be the predominant unit.
### Using SVG files from Asymptote ### Using SVG files from Asymptote
SVG files may instead be used from Asymptote files. For each SVG file, an Asymptote file of the same name is generated. These files can be imported as modules from other Asymptote files. These modules will contain a member of type `path[]` for each layer in the original SVG file: SVG files may instead be used from Asymptote files. For each SVG file, an
Asymptote file of the same name is generated. These files can be imported as
modules from other Asymptote files. These modules will contain a member of
type `path[]` for each layer in the original SVG file:
import test; import test;
draw(test.Layer_1, red + 0.001mm); draw(test.Layer_1, red + 0.001mm);
The module also contains a member `all`, which just contains all paths in one array. The module also contains a member `all`, which just contains all paths in one
array.
### OpenSCAD files ### OpenSCAD files
Files whose names end in `.scad` are compiled to STL files using OpenSCAD. OpenSCAD files whose name start with `_` are treated as "library" files which will not be compiled to STL files. These files can still be used from other OpenSCAD files using one of the following commands: Files whose names end in `.scad` are compiled to STL files using OpenSCAD.
OpenSCAD files whose name start with `_` are treated as "library" files which
will not be compiled to STL files. These files can still be used from other
OpenSCAD files using one of the following commands:
include <filename> include <filename>
use <filename> use <filename>
Please see the [OpenSCAD User Manual](http://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Print_version) for details this and other OpenSCAD functionality. Please see the
[OpenSCAD User Manual](http://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Print_version)
for details this and other OpenSCAD functionality.
## Generating Source files ## Generating Source files
This template includes support for automatically generated source files. This works by editing the `generate_sources.sh` script. This template includes support for automatically generated source files. This
works by editing the `generate_sources.sh` script.
The script defines a function `generate_file()`, which should be called in the remainder of the script once for each file to generate. The first argument to the function is be the name of the file. The remaining arguments are treated as a command, which, when run, should output the file's content to standard output. For example: The script defines a function `generate_file()`, which should be called in the
remainder of the script once for each file to generate. The first argument to
the function is be the name of the file. The remaining arguments are treated as
a command, which, when run, should output the file's content to standard
output. For example:
generate_file "src/cube.scad" echo "cube(25);" generate_file "src/cube.scad" echo "cube(25);"
How the function `generate_file()` is called is up to the script and may e.g. be done from a `for` loop or while iterating over a set of other source files. How the function `generate_file()` is called is up to the script and may e.g.
be done from a `for` loop or while iterating over a set of other source files.
## Compiling ## Compiling
To compile the whole project, run `make` from the directory in which this readme is. This will generate all sources files, if any, process all SVG files and produce an STL file for each OpenSCAD source file whose name does not start with `_`. Individual files may be created or updated by passing their names to the make command, as usual. To compile the whole project, run `make` from the directory in which this
readme is. This will generate all sources files, if any, process all SVG files
and produce an STL file for each OpenSCAD source file whose name does not start
with `_`. Individual files may be created or updated by passing their names to
the make command, as usual.
### Makefile targets ### Makefile targets
These are the special makefile targets which can be used in addition to the names of individual files to update: These are the special makefile targets which can be used in addition to the
names of individual files to update:
- `all`: Builds all files that can be built from any source files. This is the default target when running `make` without arguments. - `all`: Builds all files that can be built from any source files. This is the
default target when running `make` without arguments.
- `clean`: Removes all built files [2]. - `clean`: Removes all built files [2].
- `generated`: Generates all files generated by `generate_sources.sh`. - `generated`: Generates all files generated by `generate_sources.sh`.
- `dxf`: Exports all SVG files to DXF files. - `dxf`: Exports all SVG files to DXF files.
@ -117,24 +180,40 @@ These are the special makefile targets which can be used in addition to the name
- `asy`: Exports all configured SVG files to Asymptote files. - `asy`: Exports all configured SVG files to Asymptote files.
- `pdf`: Compiles all Asymptote files to PDF files. - `pdf`: Compiles all Asymptote files to PDF files.
[2]: This will not remove files for which the source file was removed. There is no simple way to detect whether a file was previously built from a source file or if it placed in the `src` directory manually. [2]: This will not remove files for which the source file was removed. There is
no simple way to detect whether a file was previously built from a source file
or if it placed in the `src` directory manually.
### Settings used for compilation ### Settings used for compilation
The quality of the DXF export can be specified by creating a file called `settings.mk` in the same directory as the makefile. Setting `DXF_FLATNESS` to a smaller value (which defaults to `0.1`) creates a shape that more closely follows curved parts of the exported shapes. For example: The quality of the DXF export can be specified by creating a file called
`settings.mk` in the same directory as the makefile. Setting `DXF_FLATNESS` to
a smaller value (which defaults to `0.1`) creates a shape that more closely
follows curved parts of the exported shapes. For example:
# Specify how far the exported approximation may deviate from the actual shape. The default is 0.1. # Specify how far the exported approximation may deviate from the actual
DXF_FLATNESS := 0.02 # shape. The default is 0.1.
DXF_FLATNESS := 0.02
# Specify which SVG files should be exported to Asymptote files instead of DXF files. By default, this list is empty.
ASYMPTOTE_EXPORTED_SVG_FILES := src/example.svg # Specify which SVG files should be exported to Asymptote files instead of
# DXF files. By default, this list is empty.
ASYMPTOTE_EXPORTED_SVG_FILES := src/example.svg
### Dependency tracking ### Dependency tracking
OpenSCAD has the ability to write dependency files which record all files used while producing an STL file. These dependency files can be read by `make`. This ability is used to only recompile necessary files when running make. OpenSCAD has the ability to write dependency files which record all files used
while producing an STL file. These dependency files can be read by `make`. This
ability is used to only recompile necessary files when running make.
This same mechanism is currently not used for converting SVG files referring to other files or for the script used to generate source files. Therefore, if other file used in the process are changed, the corresponding source files tracked by the makefile (the main SVG files or the files `generate_sources.sh` in case of generated sources) needs to be manually marked as changes by calling `touch` on the file before calling `make`. This same mechanism is currently not used for converting SVG files referring to
other files or for the script used to generate source files. Therefore, if
other file used in the process are changed, the corresponding source files
tracked by the makefile (the main SVG files or the files `generate_sources.sh`
in case of generated sources) needs to be manually marked as changes by calling
`touch` on the file before calling `make`.
For Asymptote files, a safer approach is currently taken. If any of the Asymptote source files in the `src` directory are changed, all Asymptote source files are recompiled. For Asymptote files, a safer approach is currently taken. If any of the
Asymptote source files in the `src` directory are changed, all Asymptote source
files are recompiled.

102
support/asymptote/__main__.py
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@ -3,55 +3,61 @@ from lib import util, make
def _asymptote(in_path, out_path, asymptote_dir, working_dir): def _asymptote(in_path, out_path, asymptote_dir, working_dir):
args = [os.environ['ASYMPTOTE'], '-vv', '-f', 'pdf', '-o', out_path, in_path] args = [os.environ['ASYMPTOTE'], '-vv', '-f', 'pdf', '-o', out_path, in_path]
with util.command_context(args, set_env = { 'ASYMPTOTE_DIR': asymptote_dir }, working_dir = working_dir, use_stderr = True) as process: with util.command_context(args, set_env={'ASYMPTOTE_DIR': asymptote_dir}, working_dir=working_dir, use_stderr=True) as process:
def get_loaded_file(line): def get_loaded_file(line):
if any(line.startswith(j) for j in ['Loading ', 'Including ']): if any(line.startswith(j) for j in ['Loading ', 'Including ']):
parts = line.rstrip('\n').split(' ') parts = line.rstrip('\n').split(' ')
if len(parts) == 4: if len(parts) == 4:
_, _, from_, path = parts _, _, from_, path = parts
if from_ == 'from': if from_ == 'from':
return path return path
return None return None
def iter_loaded_files(): def iter_loaded_files():
for i in process.stderr: for i in process.stderr:
loaded_file = get_loaded_file(i) loaded_file = get_loaded_file(i)
if loaded_file is not None: if loaded_file is not None:
yield loaded_file yield loaded_file
elif not any(i.startswith(j) for j in ['cd ', 'Using configuration ']): elif not any(i.startswith(j) for j in ['cd ', 'Using configuration ']):
print >> sys.stderr, i, print >> sys.stderr, i,
loaded_files = list(iter_loaded_files()) loaded_files = list(iter_loaded_files())
return loaded_files return loaded_files
@util.main @util.main
def main(in_path, out_path): def main(in_path, out_path):
try: try:
_, out_suffix = os.path.splitext(out_path) _, out_suffix = os.path.splitext(out_path)
with util.TemporaryDirectory() as temp_dir: with util.TemporaryDirectory() as temp_dir:
absolute_in_path = os.path.abspath(in_path) absolute_in_path = os.path.abspath(in_path)
temp_out_path = os.path.join(temp_dir, 'out.pdf') temp_out_path = os.path.join(temp_dir, 'out.pdf')
# Asymptote creates A LOT of temp files (presumably when invoking LaTeX) and leaves some of them behind. Thus we run asymptote in a temporary directory. # Asymptote creates A LOT of temp files (presumably when invoking
loaded_files = _asymptote(absolute_in_path, 'out', os.path.dirname(absolute_in_path), temp_dir) # LaTeX) and leaves some of them behind. Thus we run asymptote
# in a temporary directory.
if not os.path.exists(temp_out_path): loaded_files = _asymptote(
raise util.UserError('Asymptote did not generate a PDF file.', in_path) absolute_in_path,
'out',
# All dependencies as paths relative to the project root. os.path.dirname(absolute_in_path),
dependencies = set(map(os.path.relpath, loaded_files)) temp_dir)
# Write output files. if not os.path.exists(temp_out_path):
make.write_dependencies(out_path + '.d', out_path, dependencies - { in_path }) raise util.UserError('Asymptote did not generate a PDF file.', in_path)
shutil.copyfile(temp_out_path, out_path)
except util.UserError as e: # All dependencies as paths relative to the project root.
raise util.UserError('While processing {}: {}', in_path, e) dependencies = set(map(os.path.relpath, loaded_files))
# Write output files.
make.write_dependencies(out_path + '.d', out_path, dependencies - {in_path})
shutil.copyfile(temp_out_path, out_path)
except util.UserError as e:
raise util.UserError('While processing {}: {}', in_path, e)

108
support/inkscape/__main__.py
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@ -4,61 +4,61 @@ from . import effect, inkscape
def _unfuck_svg_document(temp_svg_path): def _unfuck_svg_document(temp_svg_path):
""" """
Unfucks an SVG document so is can be processed by the better_dxf_export plugin (or what's left of it). Unfucks an SVG document so is can be processed by the better_dxf_export
""" plugin (or what's left of it).
"""
command_line = inkscape.InkscapeCommandLine(temp_svg_path) command_line = inkscape.InkscapeCommandLine(temp_svg_path)
layers = command_line.layers layers = command_line.layers
command_line.apply_to_document('LayerUnlockAll', 'LayerShowAll') command_line.apply_to_document('LayerUnlockAll', 'LayerShowAll')
layer_copies = [] layer_copies = []
for i in layers: for i in layers:
layer_copy = command_line.duplicate_layer(i) layer_copy = command_line.duplicate_layer(i)
layer_copies.append(layer_copy) layer_copies.append(layer_copy)
command_line.apply_to_layer_content(layer_copy, 'ObjectToPath') command_line.apply_to_layer_content(layer_copy, 'ObjectToPath')
command_line.apply_to_layer_content(layer_copy, 'SelectionUnGroup') command_line.apply_to_layer_content(layer_copy, 'SelectionUnGroup')
if not i.use_paths: if not i.use_paths:
command_line.apply_to_layer_content(layer_copy, 'StrokeToPath') command_line.apply_to_layer_content(layer_copy, 'StrokeToPath')
command_line.apply_to_layer_content(layer_copy, 'SelectionUnion') command_line.apply_to_layer_content(layer_copy, 'SelectionUnion')
for original, copy in zip(layers, layer_copies): for original, copy in zip(layers, layer_copies):
command_line.clear_layer(original) command_line.clear_layer(original)
command_line.move_content(copy, original) command_line.move_content(copy, original)
command_line.delete_layer(copy) command_line.delete_layer(copy)
command_line.apply_to_document('FileSave', 'FileClose', 'FileQuit') command_line.apply_to_document('FileSave', 'FileClose', 'FileQuit')
command_line.run() command_line.run()
@util.main @util.main
def main(in_path, out_path): def main(in_path, out_path):
try: try:
_, out_suffix = os.path.splitext(out_path) _, out_suffix = os.path.splitext(out_path)
effect.ExportEffect.check_document_units(in_path) effect.ExportEffect.check_document_units(in_path)
with util.TemporaryDirectory() as temp_dir: with util.TemporaryDirectory() as temp_dir:
temp_svg_path = os.path.join(temp_dir, os.path.basename(in_path)) temp_svg_path = os.path.join(temp_dir, os.path.basename(in_path))
shutil.copyfile(in_path, temp_svg_path) shutil.copyfile(in_path, temp_svg_path)
_unfuck_svg_document(temp_svg_path) _unfuck_svg_document(temp_svg_path)
export_effect = effect.ExportEffect() export_effect = effect.ExportEffect()
export_effect.affect(args = [temp_svg_path], output = False) export_effect.affect(args=[temp_svg_path], output=False)
with open(out_path, 'w') as file: with open(out_path, 'w') as file:
if out_suffix == '.dxf': if out_suffix == '.dxf':
export_effect.write_dxf(file) export_effect.write_dxf(file)
elif out_suffix == '.asy': elif out_suffix == '.asy':
export_effect.write_asy(file) export_effect.write_asy(file)
else: else:
raise Exception('Unknown file type: {}'.format(out_suffix)) raise Exception('Unknown file type: {}'.format(out_suffix))
except util.UserError as e: except util.UserError as e:
raise util.UserError('While processing {}: {}', in_path, e) raise util.UserError('While processing {}: {}', in_path, e)

520
support/inkscape/effect.py
View file

@ -1,264 +1,280 @@
""" """
Based on code from Aaron Spike. See http://www.bobcookdev.com/inkscape/inkscape-dxf.html Based on code from Aaron Spike. See
http://www.bobcookdev.com/inkscape/inkscape-dxf.html
""" """
import pkgutil, os, re, collections, itertools import collections
import itertools
import os
import pkgutil
import re
from lxml import etree from lxml import etree
from lib import util from lib import util
from . import inkex, simpletransform, cubicsuperpath, cspsubdiv, inkscape from . import inkex, simpletransform, cubicsuperpath, cspsubdiv, inkscape
def _get_unit_factors_map(): def _get_unit_factors_map():
# Fluctuates somewhat between Inkscape releases _and_ between SVG version. # Fluctuates somewhat between Inkscape releases _and_ between SVG version.
pixels_per_inch = 96. pixels_per_inch = 96.
pixels_per_mm = pixels_per_inch / 25.4 pixels_per_mm = pixels_per_inch / 25.4
return { return {
'px': 1.0, 'px': 1.0,
'mm': pixels_per_mm, 'mm': pixels_per_mm,
'cm': pixels_per_mm * 10, 'cm': pixels_per_mm * 10,
'm' : pixels_per_mm * 1e3, 'm': pixels_per_mm * 1e3,
'km': pixels_per_mm * 1e6, 'km': pixels_per_mm * 1e6,
'pt': pixels_per_inch / 72, 'pt': pixels_per_inch / 72,
'pc': pixels_per_inch / 6, 'pc': pixels_per_inch / 6,
'in': pixels_per_inch, 'in': pixels_per_inch,
'ft': pixels_per_inch * 12, 'ft': pixels_per_inch * 12,
'yd': pixels_per_inch * 36 } 'yd': pixels_per_inch * 36}
class ExportEffect(inkex.Effect): class ExportEffect(inkex.Effect):
_unit_factors = _get_unit_factors_map() _unit_factors = _get_unit_factors_map()
_asymptote_all_paths_name = 'all' _asymptote_all_paths_name = 'all'
def __init__(self): def __init__(self):
inkex.Effect.__init__(self) inkex.Effect.__init__(self)
self._flatness = float(os.environ['DXF_FLATNESS']) self._flatness = float(os.environ['DXF_FLATNESS'])
self._layers = None self._layers = None
self._paths = None self._paths = None
def _get_document_scale(self): def _get_document_scale(self):
""" """
Return scaling factor applied to the document because of a viewBox setting. This currently ignores any setting of a preserveAspectRatio attribute (like Inkscape). Return scaling factor applied to the document because of a viewBox
""" setting. This currently ignores any setting of a preserveAspectRatio
attribute (like Inkscape).
document_height = self._get_height() """
view_box = self._get_view_box() document_height = self._get_height()
view_box = self._get_view_box()
if view_box is None or document_height is None:
return 1 if view_box is None or document_height is None:
else: return 1
_, _, _, view_box_height = view_box else:
_, _, _, view_box_height = view_box
return document_height / view_box_height
return document_height / view_box_height
def _get_document_height(self):
""" def _get_document_height(self):
Get the height of the document in pixels in the document coordinate system as it is interpreted by Inkscape. """
""" Get the height of the document in pixels in the document coordinate
system as it is interpreted by Inkscape.
view_box = self._get_view_box() """
document_height = self._get_height() view_box = self._get_view_box()
document_height = self._get_height()
if view_box is not None:
_, _, _, view_box_height = view_box if view_box is not None:
_, _, _, view_box_height = view_box
return view_box_height
elif document_height is not None: return view_box_height
return document_height elif document_height is not None:
else: return document_height
return 0 else:
return 0
def _get_height(self):
height_attr = self.document.getroot().get('height') def _get_height(self):
height_attr = self.document.getroot().get('height')
if height_attr is None:
return None if height_attr is None:
else: return None
return self._measure_to_pixels(height_attr) else:
return self._measure_to_pixels(height_attr)
def _get_view_box(self):
view_box_attr = self.document.getroot().get('viewBox') def _get_view_box(self):
view_box_attr = self.document.getroot().get('viewBox')
if view_box_attr is None:
return None if view_box_attr is None:
else: return None
return [float(i) for i in view_box_attr.split()] else:
return [float(i) for i in view_box_attr.split()]
def _get_shape_paths(self, node, transform):
shape = cubicsuperpath.parsePath(node.get('d')) def _get_shape_paths(self, node, transform):
shape = cubicsuperpath.parsePath(node.get('d'))
transform = simpletransform.composeTransform(
transform, transform = simpletransform.composeTransform(
simpletransform.composeParents(node, [[1, 0, 0], [0, 1, 0]])) transform,
simpletransform.composeParents(node, [[1, 0, 0], [0, 1, 0]]))
simpletransform.applyTransformToPath(transform, shape)
simpletransform.applyTransformToPath(transform, shape)
def iter_paths():
for path in shape: def iter_paths():
cspsubdiv.subdiv(path, self._flatness) for path in shape:
cspsubdiv.subdiv(path, self._flatness)
# path contains two control point coordinates and the actual coordinates per point.
yield [i for _, i, _ in path] # path contains two control point coordinates and the actual
# coordinates per point.
return list(iter_paths()) yield [i for _, i, _ in path]
def effect(self): return list(iter_paths())
document_height = self._get_document_height()
document_scale = self._get_document_scale() def effect(self):
document_height = self._get_document_height()
transform = simpletransform.composeTransform( document_scale = self._get_document_scale()
[[document_scale, 0, 0], [0, document_scale, 0]],
[[1, 0, 0], [0, -1, document_height]]) transform = simpletransform.composeTransform(
[[document_scale, 0, 0], [0, document_scale, 0]],
layers = inkscape.get_inkscape_layers(self.svg_file) [[1, 0, 0], [0, -1, document_height]])
layers_by_inkscape_name = { i.inkscape_name: i for i in layers }
layers = inkscape.get_inkscape_layers(self.svg_file)
def iter_paths(): layers_by_inkscape_name = {i.inkscape_name: i for i in layers}
for node in self.document.getroot().xpath('//svg:path', namespaces = inkex.NSS):
layer = layers_by_inkscape_name.get(self._get_inkscape_layer_name(node)) def iter_paths():
for node in self.document.getroot().xpath('//svg:path', namespaces=inkex.NSS):
for path in self._get_shape_paths(node, transform): layer = layers_by_inkscape_name.get(self._get_inkscape_layer_name(node))
yield layer, path
for path in self._get_shape_paths(node, transform):
self._layers = layers yield layer, path
self._paths = list(iter_paths())
self._layers = layers
def write_dxf(self, file): self._paths = list(iter_paths())
# Scales pixels to millimeters. This is the predominant unit in CAD.
unit_factor = self._unit_factors['mm'] def write_dxf(self, file):
# Scales pixels to millimeters. This is the predominant unit in CAD.
layer_indices = { l: i for i, l in enumerate(self._layers) } unit_factor = self._unit_factors['mm']
file.write(pkgutil.get_data(__name__, 'dxf_header.txt')) layer_indices = {l: i for i, l in enumerate(self._layers)}
def write_instruction(code, value): file.write(pkgutil.get_data(__name__, 'dxf_header.txt'))
print >> file, code
print >> file, value def write_instruction(code, value):
print >> file, code
handle_iter = itertools.count(256) print >> file, value
for layer, path in self._paths: handle_iter = itertools.count(256)
for (x1, y1), (x2, y2) in zip(path, path[1:]):
write_instruction(0, 'LINE') for layer, path in self._paths:
for (x1, y1), (x2, y2) in zip(path, path[1:]):
if layer is not None: write_instruction(0, 'LINE')
write_instruction(8, layer.export_name)
write_instruction(62, layer_indices.get(layer, 0)) if layer is not None:
write_instruction(8, layer.export_name)
write_instruction(5, '{:x}'.format(next(handle_iter))) write_instruction(62, layer_indices.get(layer, 0))
write_instruction(100, 'AcDbEntity')
write_instruction(100, 'AcDbLine') write_instruction(5, '{:x}'.format(next(handle_iter)))
write_instruction(10, repr(x1 / unit_factor)) write_instruction(100, 'AcDbEntity')
write_instruction(20, repr(y1 / unit_factor)) write_instruction(100, 'AcDbLine')
write_instruction(30, 0.0) write_instruction(10, repr(x1 / unit_factor))
write_instruction(11, repr(x2 / unit_factor)) write_instruction(20, repr(y1 / unit_factor))
write_instruction(21, repr(y2 / unit_factor)) write_instruction(30, 0.0)
write_instruction(31, 0.0) write_instruction(11, repr(x2 / unit_factor))
write_instruction(21, repr(y2 / unit_factor))
file.write(pkgutil.get_data(__name__, 'dxf_footer.txt')) write_instruction(31, 0.0)
def write_asy(self, file): file.write(pkgutil.get_data(__name__, 'dxf_footer.txt'))
def write_line(format, *args):
print >> file, format.format(*args) + ';' def write_asy(self, file):
def write_line(format, *args):
# Scales pixels to points. Asymptote uses PostScript points (1 / 72 inch) by default. print >> file, format.format(*args) + ';'
unit_factor = self._unit_factors['pt']
# Scales pixels to points. Asymptote uses PostScript points (1 / 72
paths_by_layer = collections.defaultdict(list) # inch) by default.
variable_names = [] unit_factor = self._unit_factors['pt']
for layer, path in self._paths: paths_by_layer = collections.defaultdict(list)
paths_by_layer[layer].append(path) variable_names = []
for layer in self._layers + [None]: for layer, path in self._paths:
paths = paths_by_layer[layer] paths_by_layer[layer].append(path)
variable_name = self._asymptote_identifier_from_layer(layer)
write_line('path[] {}', variable_name) for layer in self._layers + [None]:
paths = paths_by_layer[layer]
variable_names.append(variable_name) variable_name = self._asymptote_identifier_from_layer(layer)
write_line('path[] {}', variable_name)
for path in paths:
point_strs = ['({}, {})'.format(x / unit_factor, y / unit_factor) for x, y in path] variable_names.append(variable_name)
# Hack. We should determine this from whether Z or z was used to close the path in the SVG document. for path in paths:
if path[0] == path[-1]: point_strs = ['({}, {})'.format(x / unit_factor, y / unit_factor) for x, y in path]
point_strs[-1] = 'cycle'
# Hack. We should determine this from whether Z or z was used
write_line('{}.push({})', variable_name, ' -- '.join(point_strs)) # to close the path in the SVG document.
if path[0] == path[-1]:
if self._asymptote_all_paths_name not in variable_names: point_strs[-1] = 'cycle'
write_line('path[] {}', self._asymptote_all_paths_name)
write_line('{}.push({})', variable_name, ' -- '.join(point_strs))
for i in variable_names:
write_line('{}.append({})', self._asymptote_all_paths_name, i) if self._asymptote_all_paths_name not in variable_names:
write_line('path[] {}', self._asymptote_all_paths_name)
@classmethod
def _parse_measure(cls, string): for i in variable_names:
value_match = re.match(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)', string) write_line('{}.append({})', self._asymptote_all_paths_name, i)
unit_match = re.search('(%s)$' % '|'.join(cls._unit_factors.keys()), string)
@classmethod
value = float(string[value_match.start():value_match.end()]) def _parse_measure(cls, string):
value_match = re.match(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)', string)
if unit_match: unit_match = re.search('(%s)$' % '|'.join(cls._unit_factors.keys()), string)
unit = string[unit_match.start():unit_match.end()]
else: value = float(string[value_match.start():value_match.end()])
unit = None
if unit_match:
return value, unit unit = string[unit_match.start():unit_match.end()]
else:
@classmethod unit = None
def _measure_to_pixels(cls, string):
""" return value, unit
Parse a string containing a measure and return it's value converted to pixels.
""" @classmethod
def _measure_to_pixels(cls, string):
value, unit = cls._parse_measure(string) """
Parse a string containing a measure and return it's value converted
return value * cls._get_unit_factor(unit) to pixels.
"""
@classmethod value, unit = cls._parse_measure(string)
def _get_inkscape_layer_name(cls, node):
while node is not None: return value * cls._get_unit_factor(unit)
layer = node.get(inkex.addNS('label', 'inkscape'))
@classmethod
if layer is not None: def _get_inkscape_layer_name(cls, node):
return layer while node is not None:
layer = node.get(inkex.addNS('label', 'inkscape'))
node = node.getparent()
if layer is not None:
return None return layer
@classmethod node = node.getparent()
def _get_unit_factor(cls, unit):
if unit is None: return None
return 1
else: @classmethod
return cls._unit_factors[unit] def _get_unit_factor(cls, unit):
if unit is None:
@classmethod return 1
def _asymptote_identifier_from_layer(cls, layer): else:
if layer is None: return cls._unit_factors[unit]
return '_'
else: @classmethod
return re.sub('[^a-zA-Z0-9]', '_', layer.export_name) def _asymptote_identifier_from_layer(cls, layer):
if layer is None:
@classmethod return '_'
def check_document_units(cls, path): else:
with open(path, 'r') as file: return re.sub('[^a-zA-Z0-9]', '_', layer.export_name)
p = etree.XMLParser(huge_tree = True)
document = etree.parse(file, parser = p) @classmethod
def check_document_units(cls, path):
height_attr = document.getroot().get('height') with open(path, 'r') as file:
p = etree.XMLParser(huge_tree = True)
if height_attr is None: document = etree.parse(file, parser = p)
raise util.UserError('SVG document has no height attribute. See https://github.com/Feuermurmel/openscad-template/wiki/Absolute-Measurements')
height_attr = document.getroot().get('height')
_, height_unit = cls._parse_measure(height_attr)
if height_attr is None:
if height_unit is None or height_unit == 'px': raise util.UserError(
raise util.UserError('Height of SVG document is not an absolute measure. See https://github.com/Feuermurmel/openscad-template/wiki/Absolute-Measurements') 'SVG document has no height attribute. See '
'https://github.com/Feuermurmel/openscad-template/wiki/Absolute-Measurements')
if document.getroot().get('viewBox') is None:
raise util.UserError('SVG document has no viewBox attribute. See https://github.com/Feuermurmel/openscad-template/wiki/Absolute-Measurements') _, height_unit = cls._parse_measure(height_attr)
if height_unit is None or height_unit == 'px':
raise util.UserError(
'Height of SVG document is not an absolute measure. See '
'https://github.com/Feuermurmel/openscad-template/wiki/Absolute-Measurements')
if document.getroot().get('viewBox') is None:
raise util.UserError(
'SVG document has no viewBox attribute. See '
'https://github.com/Feuermurmel/openscad-template/wiki/Absolute-Measurements')

226
support/inkscape/inkscape.py
View file

@ -1,125 +1,131 @@
import os import os
import xml.etree.ElementTree as etree import xml.etree.ElementTree as etree
from lib import util from lib import util
def get_inkscape_layers(svg_path): def get_inkscape_layers(svg_path):
document = etree.parse(svg_path) document = etree.parse(svg_path)
def iter_layers(): def iter_layers():
nodes = document.findall( nodes = document.findall(
'{http://www.w3.org/2000/svg}g[@{http://www.inkscape.org/namespaces/inkscape}groupmode="layer"]') '{http://www.w3.org/2000/svg}g[@{http://www.inkscape.org/namespaces/inkscape}groupmode="layer"]')
for i in nodes: for i in nodes:
inkscape_name = i.get('{http://www.inkscape.org/namespaces/inkscape}label').strip() inkscape_name = i.get('{http://www.inkscape.org/namespaces/inkscape}label').strip()
if inkscape_name.endswith(']'): if inkscape_name.endswith(']'):
export_name, args = inkscape_name[:-1].rsplit('[', 1) export_name, args = inkscape_name[:-1].rsplit('[', 1)
export_name = export_name.strip() export_name = export_name.strip()
args = args.strip() args = args.strip()
use_paths = 'p' in args use_paths = 'p' in args
else: else:
use_paths = False use_paths = False
export_name = inkscape_name export_name = inkscape_name
yield Layer(inkscape_name, export_name, use_paths) yield Layer(inkscape_name, export_name, use_paths)
return list(iter_layers()) return list(iter_layers())
def _inkscape(svg_path, verbs): def _inkscape(svg_path, verbs):
def iter_args(): def iter_args():
yield os.environ['INKSCAPE'] yield os.environ['INKSCAPE']
for i in verbs: for i in verbs:
yield '--verb' yield '--verb'
yield i yield i
yield svg_path yield svg_path
util.command(list(iter_args())) util.command(list(iter_args()))
class Layer(object): class Layer(object):
def __init__(self, inkscape_name, export_name, use_paths): def __init__(self, inkscape_name, export_name, use_paths):
self.inkscape_name = inkscape_name self.inkscape_name = inkscape_name
self.export_name = export_name self.export_name = export_name
self.use_paths = use_paths self.use_paths = use_paths
class InkscapeCommandLine(object): class InkscapeCommandLine(object):
def __init__(self, path): def __init__(self, path):
self._path = path self._path = path
self._layers = get_inkscape_layers(path) self._layers = get_inkscape_layers(path)
self._current_layer_index = None self._current_layer_index = None
self._verbs = [] self._verbs = []
def apply_to_document(self, *verb): def apply_to_document(self, *verb):
self._verbs.extend(verb) self._verbs.extend(verb)
def apply_to_layer(self, layer, *verb): def apply_to_layer(self, layer, *verb):
self._go_to_layer(layer) self._go_to_layer(layer)
self.apply_to_document(*verb) self.apply_to_document(*verb)
def select_all_in_layer(self, layer): def select_all_in_layer(self, layer):
self.apply_to_layer(layer, 'EditSelectAll') self.apply_to_layer(layer, 'EditSelectAll')
def apply_to_layer_content(self, layer, *verbs): def apply_to_layer_content(self, layer, *verbs):
self.select_all_in_layer(layer) self.select_all_in_layer(layer)
self.apply_to_document(*verbs) self.apply_to_document(*verbs)
def _go_to_layer(self, layer, with_selection = False): def _go_to_layer(self, layer, with_selection=False):
if self._current_layer_index is None: if self._current_layer_index is None:
# Initialize to a known state. We cannot assume that any layer is selected and thus we need as many LayerPrev as we have layers. # Initialize to a known state. We cannot assume that any layer is
self._current_layer_index = len(self._layers) # selected and thus we need as many LayerPrev as we have layers.
self._go_to_layer(self._layers[0]) self._current_layer_index = len(self._layers)
self._go_to_layer(self._layers[0])
target_index = self._layers.index(layer)
target_index = self._layers.index(layer)
if self._current_layer_index < target_index:
for _ in range(target_index - self._current_layer_index): if self._current_layer_index < target_index:
self.apply_to_document('LayerMoveToNext' if with_selection else 'LayerNext') for _ in range(target_index - self._current_layer_index):
elif self._current_layer_index > target_index: self.apply_to_document(
for _ in range(self._current_layer_index - target_index): 'LayerMoveToNext' if with_selection else 'LayerNext')
self.apply_to_document('LayerMoveToPrev' if with_selection else 'LayerPrev') elif self._current_layer_index > target_index:
else: for _ in range(self._current_layer_index - target_index):
return self.apply_to_document(
'LayerMoveToPrev' if with_selection else 'LayerPrev')
if with_selection: else:
# When using LayerMoveToNext and LayerMoveToPrev, inkscape does not reliably select the next/previous layer. return
self._current_layer_index = None
else: if with_selection:
self._current_layer_index = target_index # When using LayerMoveToNext and LayerMoveToPrev, inkscape does
# not reliably select the next/previous layer.
def duplicate_layer(self, layer): self._current_layer_index = None
self.apply_to_layer(layer, 'LayerDuplicate') else:
self._current_layer_index = target_index
# Inkscape 0.91 places a duplicated layer above (after) the selected one and selects the new layer.
new_layer = Layer(layer.inkscape_name + ' copy', layer.export_name, layer.use_paths) def duplicate_layer(self, layer):
self._current_layer_index += 1 self.apply_to_layer(layer, 'LayerDuplicate')
self._layers.insert(self._current_layer_index, new_layer)
# Inkscape 0.91 places a duplicated layer above (after) the selected
return new_layer # one and selects the new layer.
new_layer = Layer(layer.inkscape_name + ' copy', layer.export_name, layer.use_paths)
def delete_layer(self, layer): self._current_layer_index += 1
self.apply_to_layer(layer, 'LayerDelete') self._layers.insert(self._current_layer_index, new_layer)
# Inkscape 0.91 selects the layer above (after) the deleted layer. return new_layer
del self._layers[self._current_layer_index]
def delete_layer(self, layer):
def clear_layer(self, layer): self.apply_to_layer(layer, 'LayerDelete')
self.select_all_in_layer(layer)
self.apply_to_document('EditDelete') # Inkscape 0.91 selects the layer above (after) the deleted layer.
del self._layers[self._current_layer_index]
def move_content(self, source_layer, target_layer):
self.select_all_in_layer(source_layer) def clear_layer(self, layer):
self._go_to_layer(target_layer, True) self.select_all_in_layer(layer)
self.apply_to_document('EditDelete')
def run(self):
_inkscape(self._path, self._verbs) def move_content(self, source_layer, target_layer):
self.select_all_in_layer(source_layer)
@property self._go_to_layer(target_layer, True)
def layers(self):
return list(self._layers) def run(self):
_inkscape(self._path, self._verbs)
@property
def layers(self):
return list(self._layers)

2
support/lib/make.py
View file

@ -2,4 +2,4 @@ from . import util
def write_dependencies(path, target, dependencies): def write_dependencies(path, target, dependencies):
util.write_file(path, '{}: {}\n'.format(target, ' '.join(dependencies)).encode()) util.write_file(path, '{}: {}\n'.format(target, ' '.join(dependencies)).encode())

193
support/lib/util.py
View file

@ -1,117 +1,130 @@
import sys, contextlib, subprocess, tempfile, shutil, re, os, inspect import contextlib
import inspect
import os
import re
import shutil
import subprocess
import sys
import tempfile
class UserError(Exception): class UserError(Exception):
def __init__(self, message, *args): def __init__(self, message, *args):
super(UserError, self).__init__(message.format(*args)) super(UserError, self).__init__(message.format(*args))
def main(fn): def main(fn):
"""Decorator for "main" functions. Decorates a function that should be called when the containing module is run as a script (e.g. via python -m <module>).""" """
Decorator for "main" functions. Decorates a function that should be
frame = inspect.currentframe().f_back called when the containing module is run as a script (e.g. via python -m
<module>).
def wrapped_fn(*args, **kwargs): """
try: frame = inspect.currentframe().f_back
fn(*args, **kwargs)
except UserError as e: def wrapped_fn(*args, **kwargs):
print >> sys.stderr, 'Error:', e try:
sys.exit(1) fn(*args, **kwargs)
except KeyboardInterrupt: except UserError as e:
sys.exit(2) print >> sys.stderr, 'Error:', e
sys.exit(1)
if frame.f_globals['__name__'] == '__main__': except KeyboardInterrupt:
wrapped_fn(*sys.argv[1:]) sys.exit(2)
# Allow the main function also to be called explicitly if frame.f_globals['__name__'] == '__main__':
return wrapped_fn wrapped_fn(*sys.argv[1:])
# Allow the main function also to be called explicitly
return wrapped_fn
def rename_atomic(source_path, target_path): def rename_atomic(source_path, target_path):
""" """
Move the file at source_path to target_path. Move the file at source_path to target_path.
If both paths reside on the same device, os.rename() is used, otherwise the file is copied to a temporary name next to target_path and moved from there using os.rename(). If both paths reside on the same device, os.rename() is used, otherwise
""" the file is copied to a temporary name next to target_path and moved from
there using os.rename().
source_dir_stat = os.stat(os.path.dirname(source_path)) """
target_dir_stat = os.stat(os.path.dirname(target_path)) source_dir_stat = os.stat(os.path.dirname(source_path))
target_dir_stat = os.stat(os.path.dirname(target_path))
if source_dir_stat.st_dev == target_dir_stat.st_dev:
os.rename(source_path, target_path) if source_dir_stat.st_dev == target_dir_stat.st_dev:
else: os.rename(source_path, target_path)
temp_path = target_path + '~' else:
temp_path = target_path + '~'
shutil.copyfile(source_path, temp_path)
os.rename(temp_path, target_path) shutil.copyfile(source_path, temp_path)
os.rename(temp_path, target_path)
@contextlib.contextmanager @contextlib.contextmanager
def TemporaryDirectory(): def TemporaryDirectory():
dir = tempfile.mkdtemp() dir = tempfile.mkdtemp()
try: try:
yield dir yield dir
finally: finally:
shutil.rmtree(dir) shutil.rmtree(dir)
@contextlib.contextmanager @contextlib.contextmanager
def command_context(args, remove_env = [], set_env = { }, working_dir = None, use_stderr = False): def command_context(args, remove_env=[], set_env={}, working_dir=None, use_stderr=False):
env = dict(os.environ) env = dict(os.environ)
for i in remove_env: for i in remove_env:
del env[i] del env[i]
for k, v in set_env.items(): for k, v in set_env.items():
env[k] = v env[k] = v
if use_stderr: if use_stderr:
stderr = subprocess.PIPE stderr = subprocess.PIPE
else: else:
stderr = None stderr = None
try: try:
process = subprocess.Popen(args, env = env, cwd = working_dir, stderr = stderr) process = subprocess.Popen(args, env=env, cwd=working_dir, stderr=stderr)
except OSError as e: except OSError as e:
raise UserError('Error running {}: {}', args[0], e) raise UserError('Error running {}: {}', args[0], e)
try: try:
yield process yield process
except: except:
try: try:
process.kill() process.kill()
except OSError: except OSError:
# Ignore exceptions here so we don't mask the already-being-thrown exception. # Ignore exceptions here so we don't mask the
pass # already-being-thrown exception.
pass
raise
finally: raise
# Use communicate so that we won't deadlock if the process generates some unread output. finally:
process.communicate() # Use communicate so that we won't deadlock if the process generates
# some unread output.
if process.returncode: process.communicate()
raise UserError('Command failed: {}', ' '.join(args))
if process.returncode:
raise UserError('Command failed: {}', ' '.join(args))
def command(args, remove_env = [], set_env = { }, working_dir = None): def command(args, remove_env=[], set_env={}, working_dir=None):
with command_context(args, remove_env, set_env, working_dir): with command_context(args, remove_env, set_env, working_dir):
pass pass
def bash_escape_string(string): def bash_escape_string(string):
return "'{}'".format(re.sub("'", "'\"'\"'", string)) return "'{}'".format(re.sub("'", "'\"'\"'", string))
def write_file(path, data): def write_file(path, data):
temp_path = path + '~' temp_path = path + '~'
with open(temp_path, 'wb') as file: with open(temp_path, 'wb') as file:
file.write(data) file.write(data)
os.rename(temp_path, path) os.rename(temp_path, path)
def read_file(path): def read_file(path):
with open(path, 'rb') as file: with open(path, 'rb') as file:
return file.read() return file.read()

70
support/openscad/__main__.py
View file

@ -1,42 +1,46 @@
import os import os
from lib import util, make from lib import util, make
def _openscad(in_path, out_path, deps_path): def _openscad(in_path, out_path, deps_path):
util.command([os.environ['OPENSCAD'], '-o', out_path, '-d', deps_path, in_path]) util.command([os.environ['OPENSCAD'], '-o', out_path, '-d', deps_path, in_path])
@util.main @util.main
def main(in_path, out_path): def main(in_path, out_path):
cwd = os.getcwd() cwd = os.getcwd()
def relpath(path): def relpath(path):
return os.path.relpath(path, cwd) return os.path.relpath(path, cwd)
with util.TemporaryDirectory() as temp_dir: with util.TemporaryDirectory() as temp_dir:
temp_deps_path = os.path.join(temp_dir, 'deps') temp_deps_path = os.path.join(temp_dir, 'deps')
temp_mk_path = os.path.join(temp_dir, 'mk') temp_mk_path = os.path.join(temp_dir, 'mk')
temp_files_path = os.path.join(temp_dir, 'files') temp_files_path = os.path.join(temp_dir, 'files')
_, out_ext = os.path.splitext(out_path) _, out_ext = os.path.splitext(out_path)
# OpenSCAD requires the output file name to end in .stl or .dxf. # OpenSCAD requires the output file name to end in .stl or .dxf.
temp_out_path = os.path.join(temp_dir, 'out' + out_ext) temp_out_path = os.path.join(temp_dir, 'out' + out_ext)
_openscad(in_path, temp_out_path, temp_deps_path) _openscad(in_path, temp_out_path, temp_deps_path)
mk_content = '%:; echo "$@" >> {}'.format(util.bash_escape_string(temp_files_path)) mk_content = '%:; echo "$@" >> {}'.format(util.bash_escape_string(temp_files_path))
# Use make to parse the dependency makefile written by OpenSCAD. # Use make to parse the dependency makefile written by OpenSCAD.
util.write_file(temp_mk_path, mk_content.encode()) util.write_file(temp_mk_path, mk_content.encode())
util.command(['make', '-s', '-B', '-f', temp_mk_path, '-f', temp_deps_path], remove_env = ['MAKELEVEL', 'MAKEFLAGS']) util.command(
['make', '-s', '-B', '-f', temp_mk_path, '-f', temp_deps_path],
# All dependencies as paths relative to the project root. remove_env=['MAKELEVEL', 'MAKEFLAGS'])
deps = set(map(relpath, util.read_file(temp_files_path).decode().splitlines()))
# All dependencies as paths relative to the project root.
# Relative paths to all files that should not appear in the dependency makefile. deps = set(map(relpath, util.read_file(temp_files_path).decode().splitlines()))
ignored_files = set(map(relpath, [in_path, temp_deps_path, temp_mk_path, temp_out_path]))
# Relative paths to all files that should not appear in the
# Write output files. # dependency makefile.
make.write_dependencies(out_path + '.d', out_path, deps - ignored_files) ignored_files = set(map(relpath, [in_path, temp_deps_path, temp_mk_path, temp_out_path]))
util.rename_atomic(temp_out_path, out_path)
# Write output files.
make.write_dependencies(out_path + '.d', out_path, deps - ignored_files)
util.rename_atomic(temp_out_path, out_path)