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added modifier to partial extrusion to slightly change rake, slight changes to cat/dogears

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tessaK9 2026-03-13 13:14:25 +01:00
commit 8296c5e867
4 changed files with 26 additions and 25 deletions
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6
bezier_extrusion.scad
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@ -15,7 +15,7 @@ module slice(points){
polyhedron(points = points_new, faces = faces, convexity = 10);
}
module bezier_extrude_partial(ctrl, shape, gap = 1, mod = function (t) 1, mod_x = function(t) 1, mod_y = function (t) 1, sections = 128){
module bezier_extrude_partial(ctrl, shape, merlon = 1, gap = 1, mod = function (t) 1, mod_x = function(t) 1, mod_y = function (t) 1, sections = 128){
B_0 = ctrl[0];
B_1 = 3*(-ctrl[0] + ctrl[1]);
B_2 = 3*(ctrl[0] - 2*ctrl[1] + ctrl[2]);
@ -30,8 +30,8 @@ module bezier_extrude_partial(ctrl, shape, gap = 1, mod = function (t) 1, mod_x
slices = [for (i = [0 : sections])
let (t = i/sections, p = bezier(t), normal = normal(t), n = normal/norm(normal))
[for (v = shape) [p.x+(mod(t) * mod_x(t) * n.x * v.x),p.y+(mod(t) * mod_x(t) * n.y * v.x), mod(t) * mod_y(t) * v.y]]];
for(i = [0 : 1+gap : sections-1]){
slice([slices[i],slices[i+1]]);
for(i = [0 : 1+gap : sections-merlon]){
slice([slices[i],slices[i+merlon]]);
}
}