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Code Issues Releases Wiki Activity

Reimplemented teardrop_plus() again.

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This commit is contained in:
Chris Palmer
2020-07-20 16:55:55 +01:00
parent 6a26903514
commit cb4fa40643
9 changed files with 70 additions and 46 deletions
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33
utils/core/teardrops.scad
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@@ -22,22 +22,31 @@
//! Small holes can get away without it, but they print better with truncated teardrops.
//!
//! Using teardrop_plus() or setting the plus option on other modules will elongate the teardrop vertically by the layer height, so when sliced the staircase tips
//! do not intrude into the circle. See <https://hydraraptor.blogspot.com/2020/07/horiholes_36.html>
//! do not intrude into the circle. See <https://hydraraptor.blogspot.com/2020/07/horiholes-2.html>
//
module teardrop(h, r, center = true, truncate = true, chamfer = 0, plus = false) { //! For making horizontal holes that don't need support material, set ```truncate = false``` to make traditional RepRap teardrops that don't even need bridging
module teardrop_2d(r, truncate)
module teardrop_2d(r, truncate) {
er = layer_height / 2 - eps; // Extrustion edge radius
R = plus ? r + er : r; // Corrected radius
offset = plus ? -er : 0; // Offset inwards
hull()
for(y = plus ? [-1 : 1] : 0)
translate([0, y * (layer_height / 2 - eps)]) {
for(side = [0 : 1])
mirror([side, 0, 0])
intersection() {
hull()
translate([offset, 0]) {
circle4n(R);
circle4n(r);
if(truncate)
translate([0, r / 2])
square([2 * r * (sqrt(2) - 1), r], center = true);
else
polygon([[0, 0], [eps, 0], [0, r * sqrt(2)]]);
}
if(truncate)
translate([0, R / 2])
square([2 * R * (sqrt(2) - 1), R], center = true);
else
polygon([[0, 0], [eps, 0], [0, R * sqrt(2)]]);
}
translate([0, -2 * R])
square([R, 4 * R]);
}
}
render(convexity = 5)
extrude_if(h, center)