Made various masks3d.scad shapes attachable. Added bbox atype to linear_sweep()

masks3d.scad

@@ -385,6 +385,9 @@ module rounding_angled_corner_mask(r, ang=90, d, anchor=CENTER, spin=0, orient=U
 //   rounding = Radius of the edge rounding.
 //   ---
 //   d = Diameter of cylinder.
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   difference() {
 //     cylinder(r=50, h=50, center=false);
@@ -402,14 +405,16 @@ module rounding_angled_corner_mask(r, ang=90, d, anchor=CENTER, spin=0, orient=U
 //         #tag("remove")
 //           rounding_cylinder_mask(d=30, rounding=5);
 //   }
-function rounding_cylinder_mask(r, rounding, d) = no_function("rounding_cylinder_mask");
+function rounding_cylinder_mask(r, rounding, d, anchor, spin, orient) = no_function("rounding_cylinder_mask");
-module rounding_cylinder_mask(r, rounding, d)
+module rounding_cylinder_mask(r, rounding, d, anchor=CENTER, spin=0, orient=UP)
 {
-    no_children($children);
     r = get_radius(r=r, d=d, dflt=1);
-    difference() {
+    attachable(anchor,spin,orient, r=r+rounding, l=rounding*2) {
-        cyl(r=r+rounding, l=rounding*2, anchor=CENTER);
+        difference() {
-        cyl(r=r, l=rounding*3, rounding=rounding, anchor=TOP);
+            cyl(r=r+rounding, l=rounding*2, anchor=CENTER);
+            cyl(r=r, l=rounding*3, rounding=rounding, anchor=TOP);
+        }
+        children();
     }
 }
 
@@ -428,6 +433,7 @@ module rounding_cylinder_mask(r, rounding, d)
 //   d = Diameter of hole to rounding.
 //   rounding = Radius of the rounding.
 //   excess = The extra thickness of the mask.  Default: `0.1`.
+//   ---
 //   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
 //   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
 //   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
@@ -473,6 +479,10 @@ module rounding_hole_mask(r, rounding, excess=0.1, d, anchor=CENTER, spin=0, ori
 //   d = Diameter of the mask rounding.
 //   angle = Maximum angle from vertical. Default: 45
 //   excess = Excess mask size.  Default: 0.1
+//   ---
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example(VPD=50,VPR=[55,0,120]):
 //   teardrop_edge_mask(l=20, r=10, angle=40);
 // Example(VPD=300,VPR=[75,0,25]):
@@ -483,19 +493,16 @@ module rounding_hole_mask(r, rounding, excess=0.1, d, anchor=CENTER, spin=0, ori
 //       corner_mask(BOT)
 //           teardrop_corner_mask(r=10, angle=40);
 //   }
-function teardrop_edge_mask(l, r, angle, excess=0.1, d) = no_function("teardrop_edge_mask");
+function teardrop_edge_mask(l, r, angle, excess=0.1, d, anchor, spin, orient) = no_function("teardrop_edge_mask");
-module teardrop_edge_mask(l, r, angle, excess=0.1, d)
+module teardrop_edge_mask(l, r, angle, excess=0.1, d, anchor=CTR, spin=0, orient=UP)
 {
-    no_children($children);
     assert(is_num(l));
     assert(is_num(angle));
     assert(is_num(excess));
     assert(angle>0 && angle<90);
     r = get_radius(r=r, d=d, dflt=1);
-    difference() {
+    path = mask2d_teardrop(r=r, angle=angle, excess=excess);
-        translate(-[1,1,0]*excess) cube([r+excess,r+excess,l], anchor=FWD+LEFT);
+    linear_sweep(path, height=l, center=true, atype="bbox", anchor=anchor, spin=spin, orient=orient) children();
-        translate([r,r,0]) teardrop(r=r, l=l+1, cap_h=r, ang=angle, orient=FWD);
-    }
 }
 
 
@@ -510,6 +517,9 @@ module teardrop_edge_mask(l, r, angle, excess=0.1, d)
 //   excess = Excess mask size.  Default: 0.1
 //   ---
 //   d = Diameter of the mask rounding.
+//   anchor = Translate so anchor point is at origin (0,0,0).  See [anchor](attachments.scad#subsection-anchor).  Default: `CENTER`
+//   spin = Rotate this many degrees around the Z axis after anchor.  See [spin](attachments.scad#subsection-spin).  Default: `0`
+//   orient = Vector to rotate top towards, after spin.  See [orient](attachments.scad#subsection-orient).  Default: `UP`
 // Example:
 //   teardrop_corner_mask(r=20, angle=40);
 // Example:
@@ -520,17 +530,21 @@ module teardrop_edge_mask(l, r, angle, excess=0.1, d)
 //       corner_mask(BOT)
 //           teardrop_corner_mask(r=10, angle=40);
 //   }
-function teardrop_corner_mask(r, angle, excess=0.1, d) = no_function("teardrop_corner_mask");
+function teardrop_corner_mask(r, angle, excess=0.1, d, anchor, spin, orient) = no_function("teardrop_corner_mask");
-module teardrop_corner_mask(r, angle, excess=0.1, d)
+module teardrop_corner_mask(r, angle, excess=0.1, d, anchor=CTR, spin=0, orient=UP)
 {  
-    no_children($children);
     assert(is_num(angle));
     assert(is_num(excess));
     assert(angle>0 && angle<90);
     r = get_radius(r=r, d=d, dflt=1);
-    difference() {
+    size = (r+excess) * [1,1,1];
-        translate(-[1,1,1]*excess) cube(r+excess, center=false);
+    midpt = (r-excess)/2 * [1,1,1];
-        translate([1,1,1]*r) onion(r=r, ang=angle, orient=DOWN);
+    attachable(anchor,spin,orient, size=size, offset=midpt) {
+        difference() {
+            translate(-[1,1,1]*excess) cube(r+excess, center=false);
+            translate([1,1,1]*r) onion(r=r, ang=angle, orient=DOWN);
+        }
+        children();
     }
 }
 

skin.scad

@@ -541,6 +541,7 @@ function skin(profiles, slices, refine=1, method="direct", sampling, caps, close
 // Anchor Types:
 //   "hull" = Anchors to the virtual convex hull of the shape.
 //   "intersect" = Anchors to the surface of the shape.
+//   "bbox" = Anchors to the bounding box of the extruded shape.
 // Extra Anchors:
 //   "origin" = Centers the extruded shape vertically only, but keeps the original path positions in the X and Y.  Oriented UP.
 //   "original_base" = Keeps the original path positions in the X and Y, but at the bottom of the extrusion.  Oriented UP.
@@ -662,9 +663,16 @@ module linear_sweep(
         named_anchor("original_base", [0,0,-h/2], UP)
     ];
     cp = default(cp, "centroid");
-    geom = atype=="hull"? attach_geom(cp=cp, region=region, h=h, extent=true, shift=shift, scale=scale, twist=twist, anchors=anchors) :
+    geom = atype=="hull"?  attach_geom(cp=cp, region=region, h=h, extent=true, shift=shift, scale=scale, twist=twist, anchors=anchors) :
-        atype=="intersect"? attach_geom(cp=cp, region=region, h=h, extent=false, shift=shift, scale=scale, twist=twist, anchors=anchors) :
+        atype=="intersect"?  attach_geom(cp=cp, region=region, h=h, extent=false, shift=shift, scale=scale, twist=twist, anchors=anchors) :
-        assert(in_list(atype, _ANCHOR_TYPES), "Anchor type must be \"hull\" or \"intersect\"");
+        atype=="bbox"?
+            let(
+                bounds = pointlist_bounds(flatten(region)),
+                size = bounds[1] - bounds[0],
+                midpt = (bounds[0] + bounds[1])/2
+            )
+            attach_geom(cp=[0,0,0], size=point3d(size,h), offset=point3d(midpt), shift=shift, scale=scale, twist=twist, anchors=anchors) :
+        assert(in_list(atype, ["hull","intersect","bbox"]), "Anchor type must be \"hull\", \"intersect\", or \"bbox\".");
     attachable(anchor,spin,orient, geom=geom) {
         vnf_polyhedron(vnf, convexity=convexity);
         children();
@@ -744,9 +752,16 @@ function linear_sweep(
             named_anchor("original_base", [0,0,-h/2], UP)
         ],
         cp = default(cp, "centroid"),
-        geom = atype=="hull"? attach_geom(cp=cp, region=region, h=h, extent=true, shift=shift, scale=scale, twist=twist, anchors=anchors) :
+        geom = atype=="hull"?  attach_geom(cp=cp, region=region, h=h, extent=true, shift=shift, scale=scale, twist=twist, anchors=anchors) :
-            atype=="intersect"? attach_geom(cp=cp, region=region, h=h, extent=false, shift=shift, scale=scale, twist=twist, anchors=anchors) :
+            atype=="intersect"?  attach_geom(cp=cp, region=region, h=h, extent=false, shift=shift, scale=scale, twist=twist, anchors=anchors) :
-            assert(in_list(atype, _ANCHOR_TYPES), "Anchor type must be \"hull\" or \"intersect\"")
+            atype=="bbox"?
+                let(
+                    bounds = pointlist_bounds(flatten(region)),
+                    size = bounds[1] - bounds[0],
+                    midpt = (bounds[0] + bounds[1])/2
+                )
+                attach_geom(cp=[0,0,0], size=point3d(size,h), offset=point3d(midpt), shift=shift, scale=scale, twist=twist, anchors=anchors) :
+            assert(in_list(atype, ["hull","intersect","bbox"]), "Anchor type must be \"hull\", \"intersect\", or \"bbox\".")
     ) reorient(anchor,spin,orient, geom=geom, p=vnf);