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Merge pull request #12 from peteruithoven/master

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Added 2D shapes and layout modules
This commit is contained in:
Elmo 2013-02-17 00:54:27 -08:00
parent 8930770b3a 26b29ba83f
commit ce87286467
3 changed files with 207 additions and 5 deletions
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163
2Dshapes.scad Normal file
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/*
* OpenSCAD 2D Shapes Library (www.openscad.org)
* Copyright (C) 2012 Peter Uithoven
*
* License: LGPL 2.1 or later
*/
// 2D Shapes
//ngon(sides, radius, center=false);
//complexRoundSquare(size,rads1=[0,0], rads2=[0,0], rads3=[0,0], rads4=[0,0], center=true)
//roundedSquare(pos=[10,10],r=2)
//ellipsePart(width,height,numQuarters)
//donutSlice(innerSize,outerSize, start_angle, end_angle)
//pieSlice(size, start_angle, end_angle) //size in radius(es)
//ellipse(width, height) {
// Examples
/*use <layouts.scad>;
grid(105,105,true,4)
{
// ellipse
ellipse(50,75);
// part of ellipse (a number of quarters)
ellipsePart(50,75,3);
ellipsePart(50,75,2);
ellipsePart(50,75,1);
// complexRoundSquare examples
complexRoundSquare([75,100],[20,10],[20,10],[20,10],[20,10]);
complexRoundSquare([75,100],[0,0],[0,0],[30,50],[20,10]);
complexRoundSquare([50,50],[10,20],[10,20],[10,20],[10,20],false);
complexRoundSquare([100,100]);
complexRoundSquare([100,100],rads1=[20,20],rads3=[20,20]);
// pie slice
pieSlice(50,0,10);
pieSlice(50,45,190);
pieSlice([50,20],180,270);
// donut slice
donutSlice(20,50,0,350);
donutSlice(30,50,190,270);
donutSlice([40,22],[50,30],180,270);
donutSlice([50,20],50,180,270);
donutSlice([20,30],[50,40],0,270);
}*/
//----------------------
// size, top left radius, top right radius, bottom right radius, bottom left radius, center
module complexRoundSquare(size,rads1=[0,0], rads2=[0,0], rads3=[0,0], rads4=[0,0], center=true)
{
width = size[0];
height = size[1];
//%square(size=[width, height],center=true);
x1 = 0-width/2+rads1[0];
y1 = 0-height/2+rads1[1];
x2 = width/2-rads2[0];
y2 = 0-height/2+rads2[1];
x3 = width/2-rads3[0];
y3 = height/2-rads3[1];
x4 = 0-width/2+rads4[0];
y4 = height/2-rads4[1];
scs = 0.1; //straight corner size
x = (center)? 0: width/2;
y = (center)? 0: height/2;
translate([x,y,0])
{
hull() {
// top left
if(rads1[0] > 0 && rads1[1] > 0)
translate([x1,y1]) mirror([1,0]) ellipsePart(rads1[0]*2,rads1[1]*2,1);
else
translate([x1,y1]) square(size=[scs, scs]);
// top right
if(rads2[0] > 0 && rads2[1] > 0)
translate([x2,y2]) ellipsePart(rads2[0]*2,rads2[1]*2,1);
else
translate([width/2-scs,0-height/2]) square(size=[scs, scs]);
// bottom right
if(rads3[0] > 0 && rads3[1] > 0)
translate([x3,y3]) mirror([0,1]) ellipsePart(rads3[0]*2,rads3[1]*2,1);
else
translate([width/2-scs,height/2-scs]) square(size=[scs, scs]);
// bottom left
if(rads4[0] > 0 && rads4[1] > 0)
translate([x4,y4]) rotate([0,0,-180]) ellipsePart(rads4[0]*2,rads4[1]*2,1);
else
#translate([x4,height/2-scs]) square(size=[scs, scs]);
}
}
}
module roundedSquare(pos=[10,10],r=2) {
minkowski() {
square([pos[0]-r*2,pos[1]-r*2],center=true);
circle(r=r);
}
}
// round shapes
// The orientation might change with the implementation of circle...
module ngon(sides, radius, center=false){
rotate([0, 0, 360/sides/2]) circle(r=radius, $fn=sides, center=center);
}
module ellipsePart(width,height,numQuarters)
{
o = 1; //slight overlap to fix a bug
difference()
{
ellipse(width,height);
if(numQuarters <= 3)
translate([0-width/2-o,0-height/2-o,0]) square([width/2+o,height/2+o]);
if(numQuarters <= 2)
translate([0-width/2-o,-o,0]) square([width/2+o,height/2+o*2]);
if(numQuarters < 2)
translate([-o,0,0]) square([width/2+o*2,height/2+o]);
}
}
module donutSlice(innerSize,outerSize, start_angle, end_angle)
{
difference()
{
pieSlice(outerSize, start_angle, end_angle);
if(len(innerSize) > 1) ellipse(innerSize[0]*2,innerSize[1]*2);
else circle(innerSize);
}
}
module pieSlice(size, start_angle, end_angle) //size in radius(es)
{
rx = ((len(size) > 1)? size[0] : size);
ry = ((len(size) > 1)? size[1] : size);
trx = rx* sqrt(2) + 1;
try = ry* sqrt(2) + 1;
a0 = (4 * start_angle + 0 * end_angle) / 4;
a1 = (3 * start_angle + 1 * end_angle) / 4;
a2 = (2 * start_angle + 2 * end_angle) / 4;
a3 = (1 * start_angle + 3 * end_angle) / 4;
a4 = (0 * start_angle + 4 * end_angle) / 4;
if(end_angle > start_angle)
intersection() {
if(len(size) > 1)
ellipse(rx*2,ry*2);
else
circle(rx);
polygon([
[0,0],
[trx * cos(a0), try * sin(a0)],
[trx * cos(a1), try * sin(a1)],
[trx * cos(a2), try * sin(a2)],
[trx * cos(a3), try * sin(a3)],
[trx * cos(a4), try * sin(a4)],
[0,0]
]);
}
}
module ellipse(width, height) {
scale([1, height/width, 1]) circle(r=width/2);
}

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layouts.scad Normal file
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/*
* OpenSCAD Layout Library (www.openscad.org)
* Copyright (C) 2012 Peter Uithoven
*
* License: LGPL 2.1 or later
*/
//list(iHeight);
//grid(iWidth,iHeight,inYDir = true,limit=3)
// Examples:
/*list(15)
{
square([25,10]);
square([25,10]);
square([25,10]);
square([25,10]);
square([25,10]);
}*/
/*grid(30,15,false,2)
{
square([25,10]);
square([25,10]);
square([25,10]);
square([25,10]);
square([25,10]);
}*/
//----------------------
module list(iHeight)
{
for (i = [0 : $children-1])
translate([0,i*iHeight]) child(i);
}
module grid(iWidth,iHeight,inYDir = true,limit=3)
{
for (i = [0 : $children-1])
{
translate([(inYDir)? (iWidth)*(i%limit) : (iWidth)*floor(i/limit),
(inYDir)? (iHeight)*floor(i/limit) : (iHeight)*(i%limit)])
child(i);
}
}

5
shapes.scad
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@ -80,11 +80,6 @@ module ovalTube(height, rx, ry, wall, center = false) {
}
}
// The orientation might change with the implementation of circle...
module ngon(sides, radius, center=false){
rotate([0, 0, 360/sides/2]) circle(r=radius, $fn=sides, center=center);
}
// size is the XY plane size, height in Z
module hexagon(size, height) {
boxWidth = size/1.75;