# BOSL2

**The Belfry OpenScad Library, v2**

A library for OpenSCAD, filled with useful tools, shapes, masks, math and manipulators, designed to make OpenSCAD easier to use.

- **NOTE:** BOSL2 IS PRE-ALPHA CODE.  THE CODE IS STILL BEING REORGANIZED.​
- **NOTE2:** CODE WRITTEN FOR BOSLv1 PROBABLY WON'T WORK WITH BOSL2!

[![Join the chat at https://gitter.im/revarbat/BOSL2](https://badges.gitter.im/revarbat/BOSL2.svg)](https://gitter.im/revarbat/BOSL2?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) [**BOSL2 Docs**](https://github.com/revarbat/BOSL2/wiki)

## Installation

1. Download the .zip or .tar.gz release file for this library.
2. Unpack it. It should create a `BOSL-v2.0` directory with the library files within it.
3. Rename the directory to `BOSL2`.
4. Move the `BOSL2` directory into the apropriate OpenSCAD library directory for your platform:
    - Windows: `My Documents\OpenSCAD\libraries\`
    - Linux: `$HOME/.local/share/OpenSCAD/libraries/`
    - Mac OS X: `$HOME/Documents/OpenSCAD/libraries/`
5. Restart OpenSCAD.

## Terminology

For purposes of the BOSL2 library, the following terms apply:
- **Left**: Towards X-
- **Right**: Towards X+
- **Front**/**Forward**: Towards Y-
- **Back**/**Behind**: Towards Y+
- **Bottom**/**Down**/**Below**: Towards Z-
- **Top**/**Up**/**Above**: Towards Z+


## Common Arguments:

Args     | What it is
-------- | ----------------------------------------
rounding | Radius of rounding for interior or exterior edges.
chamfer  | Size of chamfers/bevels for interior or exterior edges.
orient   | Axis a part should be oriented along.  Given as an XYZ triplet of rotation angles.  It is recommended that you use the `ORIENT_` constants from `constants.scad`.  Default is usually `ORIENT_Z` for vertical orientation.
anchor   | Side of the object that should be anchored to the origin. Given as a vector towards the side of the part to align with the origin.  It is recommended that you use the directional constants from `constants.scad`.  Default is usually `CENTER` for centered.


## Examples
A lot of the features of this library are to allow shorter, easier-to-read, intent-based coding.  For example:

[`BOSL2/transforms.scad`](https://github.com/revarbat/BOSL2/wiki/transforms.scad) Examples | Raw OpenSCAD Equivalent
------------------------------- | -------------------------------
`up(5)`                         | `translate([0,0,5])`
`xrot(30,cp=[0,10,20])`         | `translate([0,10,20]) rotate([30,0,0]) translate([0,-10,-20])`
`xspread(20,n=3)`               | `for (dx=[-20,0,20]) translate([dx,0,0])`
`zring(n=6,r=20)`               | `for (zr=[0:5]) rotate([0,0,zr*60]) translate([20,0,0])`
`skew_xy(xa=30,ya=45)`          | `multmatrix([[1,0,tan(30),0],[0,1,tan(45),0],[0,0,1,0],[0,0,0,1]])`

[`BOSL2/shapes.scad`](https://github.com/revarbat/BOSL2/wiki/shapes.scad) Examples | Raw OpenSCAD Equivalent
---------------------------------- | -------------------------------
`cube([10,20,30], anchor=BOTTOM);` | `translate([0,0,15]) cube([10,20,30], center=true);`
`cuboid([20,20,30], fillet=5, edges=EDGES_Z_ALL);` | `minkowski() {cube([10,10,20], center=true); sphere(r=5, $fn=32);}`
`prismoid([30,40],[20,30],h=10);`  | `hull() {translate([0,0,0.005]) cube([30,40,0.01], center=true); translate([0,0,9.995]) cube([20,30,0.01],center=true);}`
`xcyl(l=20,d=4);`                  | `rotate([0,90,0]) cylinder(h=20, d=4, center=true);`
`cyl(l=100, d=40, fillet=5);`      | `translate([0,0,50]) minkowski() {cylinder(h=90, d=30, center=true); sphere(r=5);}`

[`BOSL2/masks.scad`](https://github.com/revarbat/BOSL2/wiki/masks.scad) Examples | Raw Openscad Equivalent
----------------------------------- | -------------------------------
`chamfer_mask_z(l=20,chamfer=5);`   | `rotate(45) cube([5*sqrt(2), 5*sqrt(2), 20], center=true);`
`fillet_mask_z(l=20,fillet=5);`     | `difference() {cube([10,10,20], center=true); for(dx=[-5,5],dy=[-5,5]) translate([dx,dy,0]) cylinder(h=20.1, r=5, center=true);}`
`fillet_hole_mask(r=30,fillet=5);`  | `difference() {cube([70,70,10], center=true); translate([0,0,-5]) rotate_extrude(convexity=4) translate([30,0,0]) circle(r=5);}`


## The Library Files
The library files are as follows:

### Basics (Imported via std.scad)
  - [`transforms.scad`](transforms.scad): Commonly used transformations shortcuts.
  - [`distributors.scad`](distributors.scad): Modules and Functions to distribute items.
  - [`mutators.scad`](mutators.scad): Modules and Functions to mutate items.
  - [`attachments.scad`](attachments.scad): Modules and functions to enable attachments.
  - [`primitives.scad`](primitives.scad): Attachment aware replacements for built-in shapes.
  - [`shapes.scad`](shapes.scad): Common useful 3D shapes and structured objects.
  - [`shapes2d.scad`](shapes2d.scad): Common useful 2D shapes and drawing helpers.
  - [`masks.scad`](masks.scad): Shapes that are useful for masking with `difference()` and `intersect()`.

### Math (Imported via std.scad)
  - [`math.scad`](math.scad): Useful math helper functions.
  - [`vectors.scad`](vectors.scad): Functions for vector math.
  - [`arrays.scad`](arrays.scad): Functions to manipulate lists and arrays.
  - [`quaternions.scad`](quaternions.scad): Functions to work with quaternion rotations.
  - [`affine.scad`](affine.scad): Functions for affine transformation matrix math.
  - [`coords.scad`](coords.scad): Functions for coordinate system conversions and transformations.

### Geometry (Imported via std.scad)
  - [`geometry.scad`](geometry.scad): Functions to find line intersections, circles from 3 points, etc.
  - [`edges.scad`](edges.scad): Constants and functions to specify edges and corners.
  - [`vnf.scad`](vnf.scad): Vertices 'n' Faces structure to make creating `polyhedron()`s easier. 
  - [`paths.scad`](paths.scad): Functions and modules to work with arbitrary 3D paths.
  - [`regions.scad`](regions.scad): Perform offsets and boolean geometry on 2D paths and regions.

### Common (Imported via std.scad)
  - [`common.scad`](common.scad): Useful helpers for argument processing.
  - [`constants.scad`](constants.scad): Useful constants for vectors, edges, etc.
  - [`errors.scad`](errors.scad): Routines to help print out warnings and errors.
  - [`version.scad`](version.scad): Ways to parse and compare semantic versions.

### Processes
  - [`beziers.scad`](beziers.scad): Functions and modules to work with bezier curves.
  - [`threading.scad`](threading.scad): Modules to make triangular and trapezoidal threaded rods and nuts.
  - [`rounding.scad`](rounding.scad): Functions to help rounding corners in a path.
  - [`knurling.scad`](knurling.scad): Masks and shapes to help with knurling.
  - [`partitions.scad`](partitions.scad): Modules to help partition large objects into smaller assembled parts.
  - [`rounding.scad`](rounding.scad): Functions and modules to create rounded paths and boxes.
  - [`skin.scad`](skin.scad): Functions to skin surfaces between 2D cross-section paths.
  - [`hull.scad`](hull.scad): Functions to create 2D and 3D convex hulls.
  - [`triangulation.scad`](triangulation.scad): Functions to triangulate `polyhedron()` faces.
  - [`debug.scad`](debug.scad): Modules to help debug `polygons()`s and `polyhedron()`s

### Data Structures
  - [`strings.scad`](strings.scad): String manipulation functions.
  - [`stacks.scad`](stacks.scad): Functions to manipulate stack data structures.
  - [`queues.scad`](queues.scad): Functions to manipulate queue data structures.
  - [`structs.scad`](structs.scad): Structure/Dictionary creation and manipulation functions.

### Miscellaneous Parts
  - [`polyhedra.scad`](polyhedra.scad): Modules to create various regular and stellated polyhedra.
  - [`walls.scad`](walls.scad): Modules to create walls and structural elements for 3D printing.
  - [`cubetruss.scad`](cubetruss.scad): Modules to create modular open-framed trusses and joiners.
  - [`involute_gears.scad`](involute_gears.scad): Modules and functions to make involute gears and racks.
  - [`joiners.scad`](joiners.scad): Modules to make joiner shapes for connecting separately printed objects.
  - [`sliders.scad`](sliders.scad): Modules for creating simple sliders and rails.
  - [`metric_screws.scad`](metric_screws.scad): Functions and modules to make metric screws, nuts, and screwholes.
  - [`linear_bearings.scad`](linear_bearings.scad): Modules to make mounts for LMxUU style linear bearings.
  - [`nema_steppers.scad`](nema_steppers.scad): Modules to make mounting holes for NEMA motors.
  - [`phillips_drive.scad`](phillips_drive.scad): Modules to create Phillips screwdriver tips.
  - [`torx_drive.scad`](torx_drive.scad): Functions and Modules to create Torx bit drive holes.
  - [`wiring.scad`](wiring.scad): Modules to render routed bundles of wires.
  - [`hingesnaps.scad`](hingesnaps.scad): Modules to make foldable, snap-locking parts.
  - [`bottlecaps.scad`](bottlecaps.scad): Modules to make standard beverage bottle caps and necks.


## Documentation
The full library docs can be found at https://github.com/revarbat/BOSL2/wiki