add chamfered primitives

[Angelo Tartanian]

It’s great to be able to chamfer boolean operations between shapes, but something missing is the ability to generate chamfered shaped initially.

let
chamfered_rect = size -> chamfer_r -> 
    let
        r = size / 2 - chamfer_r;
    in
        make_shape {
            dist[x,y,z,t] =
                if (abs(x) > abs(r@X) && abs(y) > abs(r@Y))
                    (abs(x)-abs(r@X)+abs(y)-abs(r@Y)) - chamfer_r
                else
                    (max(abs([x,y]) - (r + chamfer_r)));
            bbox = [[-r@X,-r@Y,0],[r@X,r@Y,0]];
            is_2d = true;
        }
;

in
show_dist (chamfered_rect (2, 3) .5)

This could be added as a .chamfered alternate distance field like .exact or .mitred and could be added to all of the primitives with sharp edges. since it would be an addition it should not break any backwards compatibility.

​

[Angelo Tartanian]

[Angelo Tartanian]

Likewise, a rounded/filleted version of all of the primitives with sharp edges would also be really useful.