Origami Definition Language (OrigamiDL)

Origami Definition Language is a design-specific language created to textually define Origami folding instructions and is designed to be easily parseable by both human and machine.

Introduction

All Origami operations (i.e. folds) can be described by the seven Huzita-Hatori axioms. OrigamiDL makes use of this by having seven language constructs to specify folds, one for each of the axioms.

These are all instructions currently available in OrigamiDL:

# paper: square
; Specifies the type of paper used

# front: #fa00fa
# back: texture("texture.png")
; Specifies paper color and/or texture

# mark: "Flip the paper over and fold the edges to the center."
; A breakpoint for the runtime

# hide: --ab
# highlight: .a
; TBD

fold .landmark over --(.a .b)
; Huzita-Hatori 1: Two points (.a, .b) define a fold through them

fold .a to .b
; Huzita-Hatori 2: There is a unique fold that places .a onto .b

fold --a to --b
; Huzita-Hatori 3: There is a unique fold that places --a onto --b

fold --l passing through .p
; Huzita-Hatori 4: 
;     Given a point .p and line --l, there is a unique fold
;     perpendicular to --l that passes through .p

fold .a to --l via .b
; Huzita-Hatori 5: 
;     Given two points .a and .b and a line --l, there is a unique fold 
;     that places .a onto --l and passes through .b

fold .a to --l and .b to --r
; Huzita-Hatori 6: 
;     Given two points .a and .b and lines --l and --r,
;     there is a unique fold that places .a onto --l and .b onto --r

fold .p to --l perpendicular to --r
; Huzita-Hatori 7: 
;     Given a point .p and lines --l and --r, there is a unique fold
;     that places .p onto --l and is perpendicular to --r

.point: .(--lineA --lineB)      ; Constructs a new point from the intersection of two lines
.point: .(--line .point 20%)    ; 
--line: --(--line .point 15°)   ; 

; Define a new part under the namespace "triangle"
triangle: part ->
    # paper: square
    --line: fold .a to .b
    --namedLine: fold .b to .c

    export --line
    export renamedLine: --namedLine
    ; Exports --line and --namedLine to a global context

--line::triangle
--renamedLine::triangle

box: import 'box' ; Imports the file "./box.origami" under the namespace "box"
.point::box
; The exports defined in the file "./box.origami" are now available

# Origami Definition Language (OrigamiDL)

# Introduction

Origami Definition Language (OrigamiDL)

Introduction