Utility libraries for OpenSCAD
contains basic 2D morphology operations
inset(d=1) - creates a polygon at an offset d inside a 2D shape
outset(d=1) - creates a polygon at an offset d outside a 2D shape
fillet(r=1) - adds fillets of radius r to all concave corners of a 2D shape
rounding(r=1) - adds rounding to all convex corners of a 2D shape
shell(d,center=false) - makes a shell of width d along the edge of a 2D shape
- positive values of d places the shell on the outside
- negative values of d places the shell on the inside
- center=true and positive d places the shell centered on the edge
With a basic sample polygon shape,
module shape() {
polygon([[0,0],[1,0],[1.5,1],[2.5,1],[2,-1],[0,-1]]);
}
and $fn=32;.
inset(d=0.3) shape();
outset(d=0.3) shape();
rounding(r=0.3) shape();
fillet(r=0.3) shape();
*shell(d=0.3) shape();
*shell(d=-0.3) shape();
*shell(d=0.3,center=true) shape();
contains simple mirroring functions
mirror_x()
mirror_y()
mirror_z()
example:
module arrow(l=1,w=.6,t=0.15) {
mirror_y() polygon([[0,0],[l,0],[l-w/2,w/2],[l-w/2-sqrt(2)*t,w/2],[l-t/2-sqrt(2)*t,t/2],[0,t/2]]);
}