Basic 2d

Basic 2D shape. More...

Collaboration diagram for Basic 2d:

Files
file	basic_2d.scad
	Basic 2D shapes.

Functions
module	rectangle (size, vr, vrm=0, center=false)
	A rectangle with corner rounds or chamfers. More...
module	rectangle_c (size, core, t, co, cr=0, vr, vr1, vr2, vrm=0, vrm1, vrm2, center=false)
	A rectangle with a removed rectangular core. More...
module	rhombus (size, vr, center=false)
	A rhombus. More...
module	ngon (n, r, vr)
	An n-sided equiangular/equilateral regular polygon. More...
module	ellipse (size)
	An ellipse. More...
module	ellipse_c (size, core, t, co, cr=0)
	An ellipse with a removed elliptical core. More...
module	ellipse_s (size, a1=0, a2=0)
	An ellipse sector. More...
module	ellipse_cs (size, core, t, a1=0, a2=0, co, cr=0)
	A sector of an ellipse with a removed elliptical core. More...
module	star2d (size, n=5, vr)
	A two-dimensional star. More...

Detailed Description

Basic 2D shape.

Requires:
include <omdl-base.scad>;

Basic 2d

I	II	III
ellipse()	ellipse_c()	ellipse_cs()
IV	V	VI
ellipse_s()	ngon()	rectangle()
VII	VIII	IX
rectangle_c()	rhombus()	star2d()

Function Documentation

ellipse()

module ellipse

(

size

)

An ellipse.

Parameters

size	<decimal-list-2 | decimal> A list [rx, ry] of decimals or a single decimal for (rx=ry).

Object example

      ellipse( size=[25, 40] );

ellipse

Definition at line 797 of file basic_2d.scad.

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ellipse_c()

module ellipse_c	(	size	,
		core	,
		t	,
		co	,
		cr	= 0
	)

An ellipse with a removed elliptical core.

Parameters

size	<decimal-list-2 | decimal> A list [rx, ry] of decimals or a single decimal for (rx=ry).
core	<decimal-list-2 | decimal> A list [rx, ry] of decimals or a single decimal for (rx=ry).
t	<decimal-list-2 | decimal> A list [x, y] of decimals or a single decimal for (x=y).
co	<decimal-list-2> Core offset. A list [x, y] of decimals.
cr	<decimal> Core z-rotation.

Thickness t

• core = size - t; when t and size are given.
• size = core + t; when t and core are given.

Object example

      ellipse_c( size=[25,40], core=[16,10], co=[0,10], cr=45 );

ellipse_c

Definition at line 842 of file basic_2d.scad.

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ellipse_cs()

module ellipse_cs	(	size	,
		core	,
		t	,
		a1	= 0,
		a2	= 0,
		co	,
		cr	= 0
	)

A sector of an ellipse with a removed elliptical core.

Parameters

size	<decimal-list-2 | decimal> A list [rx, ry] of decimals or a single decimal for (rx=ry).
core	<decimal-list-2 | decimal> A list [rx, ry] of decimals or a single decimal for (rx=ry).
t	<decimal-list-2 | decimal> A list [x, y] of decimals or a single decimal for (x=y).
a1	<decimal> The start angle in degrees.
a2	<decimal> The stop angle in degrees.
co	<decimal-list-2> Core offset. A list [x, y] of decimals.
cr	<decimal> Core z-rotation.

Thickness t

• core = size - t; when t and size are given.
• size = core + t; when t and core are given.

Object example

      ellipse_cs( size=[25,40], t=[10,5], a1=90, a2=180, co=[10,0], cr=45);

ellipse_cs

Definition at line 960 of file basic_2d.scad.

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ellipse_s()

module ellipse_s	(	size	,
		a1	= 0,
		a2	= 0
	)

An ellipse sector.

Parameters

size	<decimal-list-2 | decimal> A list [rx, ry] of decimals or a single decimal for (rx=ry).
a1	<decimal> The start angle in degrees.
a2	<decimal> The stop angle in degrees.

Object example

      ellipse_s( size=[25,40], a1=90, a2=180 );

ellipse_s

Definition at line 888 of file basic_2d.scad.

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ngon()

module ngon	(	n	,
		r	,
		vr
	)

An n-sided equiangular/equilateral regular polygon.

Parameters

n	<integer> The number of sides.
r	<decimal> The ngon vertex radius.
vr	<decimal> The vertex rounding radius.

Object example

      ngon( n=6, r=25, vr=6 );

ngon

See Wikipedia for more information.

Definition at line 759 of file basic_2d.scad.

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rectangle()

module rectangle	(	size	,
		vr	,
		vrm	= 0,
		center	= false
	)

A rectangle with corner rounds or chamfers.

Parameters

size	<decimal-list-2 | decimal> A list [x, y] of decimals or a single decimal for (x=y).
vr	<decimal-list-4 | decimal> The corner rounding radius. A list [v1r, v2r, v3r, v4r] of decimals or a single decimal for (v1r=v2r=v3r=v4r). Unspecified corners are not rounded.
vrm	<integer> The corner radius mode. A 4-bit encoded integer that indicates each corner finish. Use bit value 0 for round and 1 for chamfer.
center	<boolean> Center about origin.

Object example

      rectangle( size=[25,40], vr=[0,10,10,5], vrm=4, center=true );

rectangle

Corner round is of constant radius vr. A corner chamfer replaces the last vr length of the corners edge with an isosceles right triangle with a chamfer length of (vr * sqrt(2)) cut at 45 degrees.

Definition at line 470 of file basic_2d.scad.

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rectangle_c()

module rectangle_c	(	size	,
		core	,
		t	,
		co	,
		cr	= 0,
		vr	,
		vr1	,
		vr2	,
		vrm	= 0,
		vrm1	,
		vrm2	,
		center	= false
	)

A rectangle with a removed rectangular core.

Parameters

size	<decimal-list-2 | decimal> A list [x, y] of decimals or a single decimal for (x=y).
core	<decimal-list-2 | decimal> A list [x, y] of decimals or a single decimal for (x=y).
t	<decimal-list-2 | decimal> A list [x, y] of decimals or a single decimal for (x=y).
co	<decimal-list-2> Core offset. A list [x, y] of decimals.
cr	<decimal> Core z-rotation.
vr	<decimal-list-4 | decimal> The default corner rounding radius. A list [v1r, v2r, v3r, v4r] of decimals or a single decimal for (v1r=v2r=v3r=v4r). Unspecified corners are not rounded.
vr1	<decimal-list-4 | decimal> The outer corner rounding radius.
vr2	<decimal-list-4 | decimal> The core corner rounding radius.
vrm	<integer> The default corner radius mode. A 4-bit encoded integer that indicates each corner finish. Use bit value 0 for round and 1 for chamfer.
vrm1	<integer> The outer corner radius mode.
vrm2	<integer> The core corner radius mode.
center	<boolean> Center about origin.

Thickness t

• core = size - t; when t and size are given.
• size = core + t; when t and core are given.

Object example

      rectangle_c( size=[40,25], t=[15,5], vr1=[0,0,10,10], vr2=2.5, vrm2=3, co=[0,5], center=true );

rectangle_c

Definition at line 594 of file basic_2d.scad.

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rhombus()

module rhombus	(	size	,
		vr	,
		center	= false
	)

A rhombus.

Parameters

size	<decimal-list-2 | decimal> A list [w, h] of decimals or a single decimal for (w=h).
vr	<decimal-list-4 | decimal> The corner rounding radius. A list [v1r, v2r, v3r, v4r] of decimals or a single decimal for (v1r=v2r=v3r=v4r). Unspecified corners are not rounded.
center	<boolean> Center about origin.

Object example

      rhombus( size=[40,25], vr=[2,4,2,4], center=true );

rhombus

See Wikipedia for more information.

Definition at line 664 of file basic_2d.scad.

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star2d()

module star2d	(	size	,
		n	= 5,
		vr
	)

A two-dimensional star.

Parameters

size	<decimal-list-2 | decimal> A list [l, w] of decimals or a single decimal for (size=l=2*w).
n	<decimal> The number of points.
vr	<decimal-list-3 | decimal> The vertex rounding radius. A list [v1r, v2r, v3r] of decimals or a single decimal for (v1r=v2r=v3r).

Object example

      star2d( size=[40, 15], n=5, vr=2 );

star2d

Definition at line 1011 of file basic_2d.scad.

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