add to xBar, also refactor

2023-01-13 00:58:46 -05:00
parent 933b2d9d73
commit ba1dc567b7
9 changed files with 204 additions and 32 deletions
--- a/helper/math.scad
+++ b/helper/math.scad
@ -13,9 +13,20 @@ function mirror4XY(midpoint, offsetX, offsetY)  =


 module align(a,b) {
+
+    echo("a", a);
+    echo("b", b);
    rot_axis = cross(a,b);
-    angle = acos(a*b/ (norm(a)*norm(b)));
+
+    if (rot_axis == 0) {
+        error("Can't align - provided vectors are parallel");
+    }
+
+    echo("rot_axis", rot_axis);
+
+    angle = acos(a*b/(norm(a)*norm(b)));
+    echo("angle", angle)

    rotate(v=rot_axis, a=angle)
        children(0);
-}
+}