103 lines
4.3 KiB
Markdown
103 lines
4.3 KiB
Markdown
OpenSCAD MCAD Library [](http://stillmaintained.com/elmom/MCAD)
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=====================
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This library contains components commonly used in designing and mocking up
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mechanical designs. It is currently unfinished and you can expect some API
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changes, however many things are already working.
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This library was created by various authors as named in the individual
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files' comments. All the files except those ThingDoc are licensed under
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the LGPL 2.1 (see http://creativecommons.org/licenses/LGPL/2.1/ or the
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included file lgpl-2.1.txt), some of them allow distribution under more
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permissive terms (as described in the files' comments).
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## Usage ##
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You can import these files in your scripts with `use <MCAD/filename.scad>`,
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where 'filename' is one of the files listed below like 'motors' or
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'servos'. Some files include useful constants which will be available
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with `include <MCAD/filename.scad>`, which should be safe to use on all
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included files (ie. no top level code should create geometry). (There is
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a bug/feature that prevents including constants from files that
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"include" other files - see the openscad mailing list archives for more
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details. Since the maintainers aren't very responsive, may have to work
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around this somehow)
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If you host your project in git, you can do `git submodule add URL PATH` in your
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repo to import this library as a git submodule for easy usage. Then you need to do
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a `git submodule update --init` after cloning. When you want to update the submodule,
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do `cd PATH; git checkout master; git pull`. See `git help submodule` for more info.
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"./get_submodules.py" is shortcut that initializes and updates submodules.
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Currently Provided Tools:
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* regular_shapes.scad
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- regular polygons, ie. 2D
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- regular polyhedrons, ie. 3D
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* involute_gears.scad (http://www.thingiverse.com/thing:3575):
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- gear()
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- bevel_gear()
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- bevel_gear_pair()
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* gears.scad (Old version):
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- gear(number_of_teeth, circular_pitch OR diametrial_pitch, pressure_angle OPTIONAL, clearance OPTIONAL)
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* motors.scad:
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- stepper_motor_mount(nema_standard, slide_distance OPTIONAL, mochup OPTIONAL)
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Other tools (alpha and beta quality):
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* nuts_and_bolts.scad: for creating metric and imperial bolt/nut holes
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* bearing.scad: standard/custom bearings
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* screw.scad: screws and augers
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* materials.scad: color definitions for different materials
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* stepper.scad: NEMA standard stepper outlines
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* servos.scad: servo outlines
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* boxes.scad: box with rounded corners
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* triangles.scad: simple triangles
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* 3d_triangle.scad: more advanced triangles
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Very generally useful functions and constants:
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* math.scad: general math functions
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* constants.scad: mathematical constants
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* curves.scad: mathematical functions defining curves
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* units.scad: easy metric units
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* utilities.scad: geometric funtions and misc. useful stuff
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* teardrop.scad (http://www.thingiverse.com/thing:3457): parametric teardrop module
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* shapes.scad: DEPRECATED simple shapes by Catarina Mota
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* polyholes.scad: holes that should come out well when printed
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External utils that generate and and process openscad code:
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* openscad_testing.py: testing code, see below
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* openscad_utils.py: code for scraping function names etc.
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* SolidPython: An external Python library for solid cad
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## Development ##
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You are welcome to fork this project in github and request pulls. I will try to
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accomodate the community as much as possible in this. If for some reason you
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want collaborator access, just ask.
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Github is fun (and easy), but I can include code submissions and other
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improvements directly, and have already included code from various sources
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(thingiverse is great :)
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### Code style ###
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I'd prefer to have all included code nicely indented, at least at the block
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level, and no extraneous whitespace. I'm used to indent with four spaces as
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opposed to tabs or other mixes of whitespace, but at least try to choose a style
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and stick to it.
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### Testing ###
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I've started a minimal testing infrastucture for OpenSCAD code. It's written in
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python and uses py.test (might be compatible with Nose also). Just type `py.test`
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inside the lib dir in a terminal and you should see a part of the tests passing
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and tracebacks for failing tests. It's very simplistic still, but it should test
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that no syntax errors occur at least.
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The code is included in openscad_testing.py, and can be imported to be
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used in other codebases.
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