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zhao
2023-02-25 13:19:27 -08:00
parent 97a5783d0d
commit 8d3f205f6d
11 changed files with 174 additions and 75 deletions
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28
helper/math.scad
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@ -5,26 +5,34 @@ for (i=mirror4XY(midpoint=[0,0,0], offsetX=90, offsetY=90)) {
something();
}
*/
function mirror4XY(midpoint, offsetX, offsetY) =
[[midpoint[0]+offsetX, midpoint[1]+offsetY, midpoint[2]],
[midpoint[0]-offsetX, midpoint[1]+offsetY, midpoint[2]],
[midpoint[0]-offsetX, midpoint[1]-offsetY, midpoint[2]],
[midpoint[0]+offsetX, midpoint[1]-offsetY, midpoint[2]]];
module mirror4XY(p, dx, dy) {
px = p[0];
py = p[1];
translate(v=[px, py, 0])
children(0);
translate(v=[px+dx, py, 0])
children(0);
translate(v=[px, py+dy, 0])
children(0);
translate(v=[px+dx, py+dy, 0])
children(0);
}
module align(a,b) {
//echo("a", a);
//echo("b", b);
rot_axis = cross(a,b);
if (rot_axis == [0,0,0]) {
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);