openscad/NopSCADlib
1
0
Fork 0
mirror of https://github.com/nophead/NopSCADlib.git synced 2025-09-03 12:22:46 +02:00
Code Issues Releases Wiki Activity

Cable clips can now handle up to 9 wires, have the nut and bolt flipped or use an insert.

Browse Source 
cable_radius() now handles cables with up to 20 wires.
cable_bundle() and cable_bundle_positions() now handle bundles up to 9 wires.
Added cable_merge().
This commit is contained in:
Chris Palmer
2024-02-18 23:51:30 +00:00
parent a3b27a736e
commit 0edf3a2f75
5 changed files with 156 additions and 80 deletions
Download Patch File Download Diff File Expand all files Collapse all files

53
vitamins/wire.scad
View File

@@ -44,23 +44,62 @@ function cable_is_ribbon(cable) = len(cable) > 2 && cable[2]; //! Is a ribbon ca
function cable_wire_colours(cable) = assert(len(cable[3]) >= cable_wires(cable)) cable[3]; //! Individual wire colours
function cable_tlen(cable) = cable[4]; //! Twisted cable twist length
function cable(wires, size, colours, ribbon = false, tlen = 25) = [wires, size, ribbon, colours, tlen]; //! Cable constructor
function cable_merge(cable1, cable2) = //! Combine the wires of two cables
assert(cable_wire_size(cable1) == cable_wire_size(cable2))
assert(cable_is_ribbon(cable1) == cable_is_ribbon(cable2))
cable(cable_wires(cable1) + cable_wires(cable2),
cable_wire_size(cable1),
concat(cable_wire_colours(cable1), cable_wire_colours(cable1)),
cable_is_ribbon(cable1));
// numbers from http://mathworld.wolfram.com/CirclePacking.html
function cable_radius(cable) = [0, 1, 2, 2.15, 2.41, 2.7, 3, 3, 3.3][cable_wires(cable)] * cable_wire_size(cable) / 2; //! Radius of a bundle of wires, see <http://mathworld.wolfram.com/CirclePacking.html>.
// numbers from https://en.wikipedia.org/wiki/Circle_packing_in_a_circle
function cable_radius(cable) = [ //! Radius of a bundle of wires, see <http://mathworld.wolfram.com/CirclePacking.html>.
0, 1, 2,
2.154, // 3
2.414, // 4
2.701, // 5
3, // 6
3, // 7
3.304, // 8
3.613, // 9
3.813, // 10
3.923, // 11
4.029, // 12
4.236, // 13
4.328, // 14
4.521, // 15
4.615, // 16
4.792, // 17
4.863, // 18
4.863, // 19
5.122, // 20
][cable_wires(cable)] * cable_wire_size(cable) / 2;
function wire_hole_radius(cable) = ceil(4 * cable_radius(cable) + 1) / 4; //! Radius of a hole to accept a bundle of wires, rounded up to standard metric drill size
function cable_bundle(cable) = //! Dimensions of the bounding rectangle of a bundle of wires in a flat cable clip
(cable_is_ribbon(cable) ? [cable_wires(cable), 1] :
[[0,0], [1,1], [2,1], [2, 1 + sin(60)], [2,2], [3, 1 + sin(60)], [3,2]][cable_wires(cable)]) * cable_wire_size(cable);
[[0, 0], // 0
[1, 1], // 1
[2, 1], // 2
[2, 1 + sin(60)], // 3
[2, 2], // 4
[3, 1 + sin(60)], // 5
[3, 2], // 6
[4, 1 + sin(60)], // 7
[3, 2 + sin(60)], // 8
[3, 3]
][cable_wires(cable)]) * cable_wire_size(cable);
function cable_bundle_positions(cable) = let( //! Positions of wires in a bundle to go through a cable strip
wires = cable_wires(cable),
bottom = cable_is_ribbon(cable) ? wires : wires < 3 ? wires : ceil(wires / 2),
top = wires - bottom
bottom = cable_is_ribbon(cable) ? wires : wires < 3 ? wires : wires <= 7 ? ceil(wires / 2) : min(wires, 3),
middle = min(wires - bottom, 3),
top = wires - bottom - middle
)
[for(i = [0 : 1 : bottom - 1]) [i - (bottom - 1) / 2, 0.5],
for(i = [top - 1 : -1 : 0]) [i - (top - 1) / 2, top == bottom ? 1.5 : 0.5 + sin(60)]
[for(i = [0 : 1 : bottom - 1]) [i - (bottom - 1) / 2, 0.5],
for(i = [middle - 1 : -1 : 0]) [i - (middle - 1) / 2, middle == bottom ? 1.5 : 0.5 + sin(60)],
for(i = [0 : 1 : top - 1]) [i - [0.5, 0.5, 1][top - 1], top == middle ? 2.5 : 1.5 + sin(60)]
] * cable_wire_size(cable);
function cable_width(cable) = cable_bundle(cable).x; //! Width in flat clip