mirror of
https://github.com/rsheldiii/KeyV2.git
synced 2024-11-26 23:04:23 +00:00
62 lines
2.9 KiB
OpenSCAD
62 lines
2.9 KiB
OpenSCAD
include <constants.scad>
|
|
|
|
// I use functions when I need to compute special variables off of other special variables
|
|
// functions need to be explicitly included, unlike special variables, which
|
|
// just need to have been set before they are used. hence this file
|
|
|
|
// cherry stem dimensions
|
|
function outer_cherry_stem(slop) = [7.2 - slop * 2, 5.5 - slop * 2];
|
|
|
|
// cherry stabilizer stem dimensions
|
|
function outer_cherry_stabilizer_stem(slop) = [4.85 - slop * 2, 6.05 - slop * 2];
|
|
|
|
// box (kailh) switches have a bit less to work with
|
|
function outer_box_cherry_stem(slop) = [6 - slop, 6 - slop];
|
|
|
|
// .005 purely for aesthetics, to get rid of that ugly crosshatch
|
|
function cherry_cross(slop, extra_vertical = 0) = [
|
|
// horizontal tine
|
|
[4.03 + slop, 1.25 + slop / 3],
|
|
// vertical tine
|
|
[1.15 + slop / 3, 4.23 + extra_vertical + slop / 3 + SMALLEST_POSSIBLE],
|
|
];
|
|
|
|
// actual mm key width and height
|
|
function total_key_width(delta = 0) = $bottom_key_width + $unit * ($key_length - 1) - delta;
|
|
function total_key_height(delta = 0) = $bottom_key_height + $unit * ($key_height - 1) - delta;
|
|
|
|
// actual mm key width and height at the top
|
|
function top_total_key_width() = $bottom_key_width + ($unit * ($key_length - 1)) - $width_difference;
|
|
function top_total_key_height() = $bottom_key_height + ($unit * ($key_height - 1)) - $height_difference;
|
|
|
|
function side_tilt(column) = asin($unit * column / $double_sculpt_radius);
|
|
// tan of 0 is 0, division by 0 is nan, so we have to guard
|
|
function extra_side_tilt_height(column) = side_tilt(column) ? ($double_sculpt_radius - (unit * abs(column)) / tan(abs(side_tilt(column)))) : 0;
|
|
|
|
// (I think) extra length of the side of the keycap due to the keytop being tilted.
|
|
// necessary for calculating flat sided keycaps
|
|
function vertical_inclination_due_to_top_tilt() = sin($top_tilt) * (top_total_key_height() - $corner_radius * 2) * 0.5;
|
|
// how much you have to expand the front or back of the keytop to make the side
|
|
// of the keycap a flat plane. 1 = front, -1 = back
|
|
// I derived this through a bunch of trig reductions I don't really understand.
|
|
function extra_keytop_length_for_flat_sides() = ($width_difference * vertical_inclination_due_to_top_tilt()) / ($total_depth);
|
|
|
|
// 3d surface functions (still in beta)
|
|
|
|
// monotonically increasing function that distributes the points of the surface mesh
|
|
// only for polar_3d_surface right now
|
|
// if it's linear it's a grid. sin(dim) * size concentrates detail around the edges
|
|
function surface_distribution_function(dim, size) = sin(dim) * size;
|
|
|
|
// the function that actually determines what the surface is.
|
|
// feel free to override, the last one wins
|
|
|
|
// debug
|
|
function surface_function(x,y) = 1;
|
|
// cylindrical
|
|
function surface_function(x,y) = (sin(acos(x/$3d_surface_size)));
|
|
// spherical
|
|
function surface_function(x,y) = (sin(acos(x/$3d_surface_size))) * sin(acos(y/$3d_surface_size));
|
|
// (statically) random!
|
|
/* function surface_function(x,y) = sin(rands(0,90,1,x+y)[0]); */
|