3DPrinting/KeyV2
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add a massive chunk of stuff because you forgot to keep doing atomic commits

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Bob - Home - Windows 2017-12-20 00:47:03 -05:00
parent f252ec2c30
commit 6d2bb24ccb
31 changed files with 668 additions and 674 deletions
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60
shapes.scad
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@ -1,60 +0,0 @@
$fs=.1;
unit = 19.05;
module key_shape(width, height, width_difference, height_difference, corner_size) {
if ($key_shape_type == "iso_enter") {
ISO_enter(width, height, width_difference, height_difference, corner_size);
} else if ($key_shape_type == "normal") {
roundedSquare([width - width_difference, height - height_difference], corner_size);
} else if ($key_shape_type == "circle") {
circle(d=width - width_difference);
}
}
// centered
module roundedRect(size, radius, center=true) {
linear_extrude(height = size[2]){
roundedSquare([size[0], size[1]], radius, center=center);
}
}
module roundedSquare(size, radius, center = true) {
offset(r=radius){
square([size[0] - radius * 2, size[1] - radius * 2], center=center);
}
}
// corollary is roundedSquare
// NOT 3D
module ISO_enter(width, height, width_difference, height_difference, corner_size){
function unit_length(length) = unit * (length - 1) + 18.16;
// in order to make the ISO keycap shape generic, we are going to express the
// 'elbow point' in terms of ratios. an ISO enter is just a 1.5u key stuck on
// top of a 1.25u key, but since our key_shape function doesnt understand that
// and wants to pass just width and height, we make these ratios to know where
// to put the elbow joint
width_ratio = unit_length(1.25) / unit_length(1.5);
height_ratio = unit_length(1) / unit_length(2);
// height and width difference currently don't do anything - but I think I should keep them. they don't do anything because we currently use scaling in the linear_extrude to express the difference in height and width of the top of the keycap
pointArray = [
[ -width_difference/2, -height_difference/2], // top right
[ -width_difference/2, -height + height_difference/2], // bottom right
[-width * width_ratio + width_difference/2, -height + height_difference/2], // bottom left
[-width * width_ratio + width_difference/2,-height * height_ratio + height_difference/2], // inner middle point
[ -width + width_difference/2,-height * height_ratio + height_difference/2], // outer middle point
[ -width + width_difference/2, -height_difference/2] // top left
];
minkowski(){
circle(r=corner_size);
// gives us rounded inner corner
offset(r=-corner_size*2) {
translate([(width * width_ratio)/2, height/2]) polygon(points=pointArray);
}
}
}