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NopSCADlib
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Can now control the number of index_screws in rail_screws()

This commit is contained in:
Chris Palmer 2021-01-04 15:26:29 +00:00
parent 6b8ea9685e
commit 41a0723362
2 changed files with 4 additions and 4 deletions
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2
readme.md
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@ -2680,7 +2680,7 @@ Linear rails with carriages.
| `rail(type, length)` | Draw the specified rail | | `rail(type, length)` | Draw the specified rail |
| `rail_assembly(type, length, pos, carriage_end_colour = grey(20)` | Rail and carriage assembly | | `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_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) ![rails](tests/png/rails.png)

6
vitamins/rail.scad
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@ -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); 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); screw = rail_screw(type);
end_screw = rail_end_screw(type); end_screw = rail_end_screw(type);
screw_len = screw_longer_than(rail_screw_height(type, screw) + thickness); screw_len = screw_longer_than(rail_screw_height(type, screw) + thickness);
end_screw_len = screw_longer_than(rail_screw_height(type, end_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)) translate_z(rail_screw_height(type, end_screw))
rail_hole_positions(type, length, 0, index_screws) rail_hole_positions(type, length, 0, index_screws)
screw(end_screw, end_screw_len); screw(end_screw, end_screw_len);
translate_z(rail_screw_height(type, screw)) 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); screw(screw, screw_len);
} }