From 9e544a8489ac210ed5cf0633e4a85dacbed04f1d Mon Sep 17 00:00:00 2001 From: Garth Minette Date: Mon, 7 Mar 2022 18:59:05 -0800 Subject: [PATCH] Added atype= to rect() --- .openscad_docsgen_rc | 1 + shapes2d.scad | 33 +++++++++++++++++++++++++++------ 2 files changed, 28 insertions(+), 6 deletions(-) diff --git a/.openscad_docsgen_rc b/.openscad_docsgen_rc index 8693302..5facf70 100644 --- a/.openscad_docsgen_rc +++ b/.openscad_docsgen_rc @@ -50,6 +50,7 @@ PrioritizeFiles: screw_drive.scad DefineHeader(BulletList): Side Effects DefineHeader(Table;Headers=Anchor Name|Position): Extra Anchors +DefineHeader(Table;Headers=Anchor Type|What it is): Anchor Types DefineHeader(Table;Headers=Name|Definition): Terminology DefineHeader(BulletList): Requirements diff --git a/shapes2d.scad b/shapes2d.scad index d523dfe..b2b8bda 100644 --- a/shapes2d.scad +++ b/shapes2d.scad @@ -84,10 +84,15 @@ module square(size=1, center, anchor, spin) { // When called as a function, returns a 2D path/list of points for a square/rectangle of the given size. // Arguments: // size = The size of the rectangle to create. If given as a scalar, both X and Y will be the same size. +// --- // rounding = The rounding radius for the corners. If negative, produces external roundover spikes on the X axis. If given as a list of four numbers, gives individual radii for each corner, in the order [X+Y+,X-Y+,X-Y-,X+Y-]. Default: 0 (no rounding) // chamfer = The chamfer size for the corners. If negative, produces external chamfer spikes on the X axis. If given as a list of four numbers, gives individual chamfers for each corner, in the order [X+Y+,X-Y+,X-Y-,X+Y-]. Default: 0 (no chamfer) +// atype = The type of anchoring to use with `anchor=`. Valid opptions are "box" and "perim". This lets you choose between putting anchors on the rounded or chamfered perimeter, or on the square bounding box of the shape. Default: "box" // anchor = Translate so anchor point is at origin (0,0,0). See [anchor](attachments.scad#subsection-anchor). Default: `CENTER` // spin = Rotate this many degrees around the Z axis after anchor. See [spin](attachments.scad#subsection-spin). Default: `0` +// Anchor Types: +// box = Anchor is with respect to the rectangular bounding box of the shape. +// perim = Anchors are placed along the rounded or chamfered perimeter of the shape. // Example(2D): // rect(40); // Example(2D): Anchored @@ -102,13 +107,21 @@ module square(size=1, center, anchor, spin) { // rect([40,30], chamfer=-5); // Example(2D): Negative-Rounded Rect // rect([40,30], rounding=-5); +// Example(2D): Default "box" Anchors +// color("red") rect([40,30]); +// rect([40,30], rounding=10) +// show_anchors(); +// Example(2D): "perim" Anchors +// rect([40,30], rounding=10, atype="perim") +// show_anchors(); // Example(2D): Mixed Chamferring and Rounding // rect([40,30],rounding=[5,0,10,0],chamfer=[0,8,0,15],$fa=1,$fs=1); // Example(2D): Called as Function // path = rect([40,30], chamfer=5, anchor=FRONT, spin=30); // stroke(path, closed=true); // move_copies(path) color("blue") circle(d=2,$fn=8); -module rect(size=1, rounding=0, chamfer=0, anchor=CENTER, spin=0) { +module rect(size=1, rounding=0, atype="box", chamfer=0, anchor=CENTER, spin=0) { + errchk = assert(in_list(atype, ["box", "perim"])); size = is_num(size)? [size,size] : point2d(size); if (rounding==0 && chamfer==0) { attachable(anchor, spin, two_d=true, size=size) { @@ -117,19 +130,27 @@ module rect(size=1, rounding=0, chamfer=0, anchor=CENTER, spin=0) { } } else { pts = rect(size=size, rounding=rounding, chamfer=chamfer); - attachable(anchor, spin, two_d=true, path=pts) { - polygon(pts); - children(); + if (atype == "perim") { + attachable(anchor, spin, two_d=true, path=pts) { + polygon(pts); + children(); + } + } else { + attachable(anchor, spin, two_d=true, size=size) { + polygon(pts); + children(); + } } } } -function rect(size=1, rounding=0, chamfer=0, anchor=CENTER, spin=0) = +function rect(size=1, rounding=0, chamfer=0, atype="box", anchor=CENTER, spin=0) = assert(is_num(size) || is_vector(size)) assert(is_num(chamfer) || len(chamfer)==4) assert(is_num(rounding) || len(rounding)==4) + assert(in_list(atype, ["box", "perim"])) let( anchor=point2d(anchor), size = is_num(size)? [size,size] : point2d(size), @@ -176,7 +197,7 @@ function rect(size=1, rounding=0, chamfer=0, anchor=CENTER, spin=0) = ) each move(cp, p=qrpts) ] - ) complex? + ) complex && atype=="perim"? reorient(anchor,spin, two_d=true, path=path, p=path) : reorient(anchor,spin, two_d=true, size=size, p=path);