openscad/NopSCADlib
1
0
Fork 0
mirror of https://github.com/nophead/NopSCADlib.git synced 2025-08-05 23:17:26 +02:00
Code Issues Releases Wiki Activity

Fixed ziptie bug for small wires and corners made sharper.

Browse Source
This commit is contained in:
Chris Palmer
2022-03-17 20:48:43 +00:00
parent b70911dc13
commit 99a5570e24
4 changed files with 18 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

BIN
tests/png/psu_shroud.png
View File

Binary file not shown.
Side by Side Swipe Overlay

Before

Width:  |  Height:  |  Size: 44 KiB

After

Width:  |  Height:  |  Size: 44 KiB

BIN
tests/png/ssr_shroud.png
View File

Binary file not shown.
Side by Side Swipe Overlay

Before

Width:  |  Height:  |  Size: 49 KiB

After

Width:  |  Height:  |  Size: 49 KiB

13
tests/zipties.scad
View File

@@ -16,14 +16,23 @@
// You should have received a copy of the GNU General Public License along with NopSCADlib. // You should have received a copy of the GNU General Public License along with NopSCADlib.
// If not, see <https://www.gnu.org/licenses/>. // If not, see <https://www.gnu.org/licenses/>.
// //
wire_r = 5; // [1 : 20]
t = 0; // [0 : 3]
include <../utils/core/core.scad> include <../utils/core/core.scad>
use <../utils/layout.scad> use <../utils/layout.scad>
include <../vitamins/zipties.scad> include <../vitamins/zipties.scad>
module zipties() module zipties()
layout([for(z = zipties) 9], 10) layout([for(z = zipties) 9], 2 * wire_r) {
ziptie(zipties[$i], 5); ziptie(zipties[$i], wire_r, t);
if(t)
color(grey(20))
cylinder(r = wire_r, h = 10, center = true);
}
if($preview) if($preview)
zipties(); zipties();

13
vitamins/ziptie.scad
View File

@@ -33,17 +33,16 @@ function ziptie_tail(type) = type[5]; //! The length without teeth
module ziptie(type, r = 5, t = 0) //! Draw specified ziptie wrapped around radius `r` and optionally through panel thickness `t` module ziptie(type, r = 5, t = 0) //! Draw specified ziptie wrapped around radius `r` and optionally through panel thickness `t`
{ {
latch = ziptie_latch(type); latch = ziptie_latch(type);
lx = latch.x / 2;
zt = ziptie_thickness(type); zt = ziptie_thickness(type);
cr = zt; // sharp corner radius lx = min(latch.x / 2, r + zt / 2);
right_bulge = (r > lx - zt / 2) || !t;
cr = zt / 2; // sharp corner radius
z = r + t - cr; z = r + t - cr;
x = r - cr; x = r - cr;
inside_corners = t ? [ [0, 0, r], [-x, z, cr], [x, z, cr] ] : [];
outside_corners = t ? [ [0, 0, r + zt], [-x, z, cr + zt], [x, z, cr + zt] ] : []; outside_corners = t ? [ [0, 0, r + zt], [-x, z, cr + zt], [x, z, cr + zt] ] : [];
x1 = lx - zt / 2; x1 = lx - zt / 2;
x2 = x1 + x1 * zt / r; x2 = x1 + x1 * zt / r;
inside_path = concat([ [0, 0, r], [x1, -r, eps] ], inside_corners); outside_path = concat([ if(right_bulge) [0, 0, r + zt], [x2, -r - zt, eps] ], outside_corners);
outside_path = concat([ [0, 0, r + zt], [x2, -r - zt, eps] ], outside_corners);
tangents = rounded_polygon_tangents(outside_path); tangents = rounded_polygon_tangents(outside_path);
length = ceil(rounded_polygon_length(outside_path, tangents) + ziptie_tail(type) + latch.z + 1); length = ceil(rounded_polygon_length(outside_path, tangents) + ziptie_tail(type) + latch.z + 1);
@@ -56,7 +55,9 @@ module ziptie(type, r = 5, t = 0) //! Draw specified ziptie wrapped around radiu
linear_extrude(width, center = true) linear_extrude(width, center = true)
difference() { difference() {
rounded_polygon(outside_path, tangents); rounded_polygon(outside_path, tangents);
rounded_polygon(inside_path);
offset(-zt)
rounded_polygon(outside_path, tangents);
} }
translate([lx, -r]) translate([lx, -r])