Switch focus to 2d to avoid 3d mink

2022-01-09 13:12:11 -08:00
parent 5352041c8c
commit c29045b4c2
2 changed files with 48 additions and 15 deletions
@@ -0,0 +1,41 @@
+$fn=32;
+
+scale = 1;
+card = scale;
+corn = scale / sqrt(2);
+
+function scale_xy(xy, m) = [ for (i = m) [i.x * xy, i.y * xy]];
+
+function normalize(vec) = vec / norm(vec);
+
+function grow(shape, mag) = [ for (i = shape) i + normalize(i) * mag];
+
+function add_radius(shape, rad) = grow(shape, rad/cos(180/len(shape)));
+
+function lerp(a,b,t) = a + (b - a) * t;
+
+module round_poly(shape, radius, sharpness = 0){
+    corner_r = lerp(radius, 0, sharpness);
+    corner_offset = lerp(0, radius, sharpness);
+    
+    
+    minkowski(){
+        polygon(add_radius(shape,corner_offset));
+        circle(max(corner_r, 0.0001));
+    }
+}
+
+oct = [
+    [card,0],
+    [corn,corn],
+    [0,card],
+    [-corn,corn],
+    [-card,0],
+    [-corn,-corn],
+    [0,-card],
+    [corn,-corn]
+];
+
+radius = 1;
+
+round_poly(oct,radius, 1);