From 41a0723362146592fedf9c2a259539b8ea3ca3f0 Mon Sep 17 00:00:00 2001 From: Chris Palmer Date: Mon, 4 Jan 2021 15:26:29 +0000 Subject: [PATCH] Can now control the number of index_screws in rail_screws() --- readme.md | 2 +- vitamins/rail.scad | 6 +++--- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/readme.md b/readme.md index 91b722b..0d04e19 100644 --- a/readme.md +++ b/readme.md @@ -2680,7 +2680,7 @@ Linear rails with carriages. | `rail(type, length)` | Draw the specified rail | | `rail_assembly(type, length, pos, carriage_end_colour = grey(20)` | Rail and carriage assembly | | `rail_hole_positions(type, length, first = 0, screws = 100, both_ends = true)` | Position children over screw holes | -| `rail_screws(type, length, thickness, screws = 100)` | Place screws in the rail | +| `rail_screws(type, length, thickness, screws = 100, index_screws = undef)` | Place screws in the rail | ![rails](tests/png/rails.png) diff --git a/vitamins/rail.scad b/vitamins/rail.scad index 5050790..b1d8ea6 100644 --- a/vitamins/rail.scad +++ b/vitamins/rail.scad @@ -181,19 +181,19 @@ module rail_assembly(type, length, pos, carriage_end_colour = grey(20), carriage carriage(rail_carriage(type), type, carriage_end_colour, carriage_wiper_colour); } -module rail_screws(type, length, thickness, screws = 100) { //! Place screws in the rail +module rail_screws(type, length, thickness, screws = 100, index_screws = undef) { //! Place screws in the rail screw = rail_screw(type); end_screw = rail_end_screw(type); screw_len = screw_longer_than(rail_screw_height(type, screw) + thickness); end_screw_len = screw_longer_than(rail_screw_height(type, end_screw) + thickness); - index_screws = screws > 2 ? 1 : 2; + index_screws = is_undef(index_screws) ? screws > 2 ? 1 : 2 : index_screws; translate_z(rail_screw_height(type, end_screw)) rail_hole_positions(type, length, 0, index_screws) screw(end_screw, end_screw_len); translate_z(rail_screw_height(type, screw)) - rail_hole_positions(type, length, index_screws) + rail_hole_positions(type, length, index_screws, screws - index_screws) screw(screw, screw_len); }