Add/reorg enclosure OpenSCAD files

.gitignore

@@ -1,6 +1,11 @@
 hardware/History
 hardware/Project Logs for olsndot 
 hardware/__Previews
+__pycache__
+.ipynb_checkpoints
+
+*.stl
+
 # Windows image file caches
 Thumbs.db
 ehthumbs.db

enclosure/lyza/lyza_enclosure.scad

@@ -0,0 +1,238 @@
+
+/* A small, arbitrary unit to guard against rounding errors */
+eps = 0.1;
+alot = 1000;
+
+/* Base PCB size */
+pcb_width = 50;
+pcb_height = 70;
+/* Extra space around PCB */
+pcb_extra = 1;
+
+/* Offset of screw hole centers from left/right/top/bottom side of board */
+screw_offx_l = 5;
+screw_offx_r = 5;
+screw_offx_t = 5;
+screw_offx_b = 5;
+
+/* Thickness of bottom, walls, lid (middle sections) */
+bottom_thickness = 1.5;
+wall_thickness = 1.5;
+lid_thickness = 1.5;
+
+/* Outside corner radius */
+corner_radius_wall = 3;
+corner_radius_lid = 2;
+
+screw_base_dia = 8;
+screw_base_h = 5;
+screw_nut_dia = 5.4;
+screw_nut_h = 6;
+screw_hole_dia = 4.0;
+screw_hole_h = 6;
+board_thickness = 1.6;
+height_above_board = 18;
+height_lid_inner = 1;
+lid_lip_depth = 1;
+lid_lip_width = 1;
+lid_lip_extra = 1;
+
+clamp_tube_dia = screw_base_dia;
+clamp_tube_h = 0; //height_above_board+height_lid_inner;
+clamp_tube_base_extra = 2;
+
+screw_head_hole_dia = 6.5;
+screw_head_hole_depth = 3;
+
+module rounded_rect(w, h, r) {
+    hull(){
+        translate([w/2-r, h/2-r]) circle(r);
+        translate([-(w/2-r), h/2-r]) circle(r);
+        translate([w/2-r, -(h/2-r)]) circle(r);
+        translate([-(w/2-r), -(h/2-r)]) circle(r);
+    }
+}
+
+module shell(thickness, inner_height, inner_extra, radius_horiz) {
+    d = thickness + inner_height;
+    rh=radius_horiz;
+    difference(){
+        r = corner_radius_wall;
+        w = pcb_width+pcb_extra+2*wall_thickness;
+        h = pcb_height+pcb_extra+2*wall_thickness;
+        hull() {
+            translate([0, 0, rh]) linear_extrude(height=d-rh) rounded_rect(w, h, r);
+            linear_extrude(height=eps) rounded_rect(w-2*rh, h-2*rh, r);
+        }
+        
+        iw = pcb_width+inner_extra;
+        ih = pcb_height+inner_extra;
+        translate([-iw/2, -ih/2, bottom_thickness]) cube([iw, ih, h]);
+    }
+}
+
+module single_screw_base() {
+    translate([0, 0, bottom_thickness-eps]) linear_extrude(height=screw_base_h+eps) {
+        circle(d=screw_base_dia);
+        translate([-screw_base_dia/2, 0]) square([alot, alot]);
+        translate([0, -screw_base_dia/2]) square([alot, alot]);
+    }
+}
+
+w = pcb_width;
+h = pcb_height;
+e = pcb_extra;
+l = screw_offx_l;
+r = screw_offx_r;
+t = screw_offx_t;
+b = screw_offx_b;
+s1_pos = [w/2-l, h/2-b];
+s2_pos = [-w/2+r, -h/2+t];
+s3_pos = [w/2-l, -h/2+t];
+s4_pos = [-w/2+r, h/2-b];
+module screw_bases() {
+    intersection() {
+        union() {
+            translate(s1_pos) single_screw_base();
+            translate(s2_pos) mirror([1,1,0]) single_screw_base();
+            translate(s3_pos) mirror([0,1,0]) single_screw_base();
+            translate(s4_pos) mirror([1,0,0]) single_screw_base();
+        }
+        cube([w+e+eps, h+e+eps, alot], center=true);
+    }
+}
+
+module single_screw_hole() {
+    translate([0, 0, bottom_thickness+screw_base_h+eps])
+    mirror([0,0,1])
+    union() {
+        cylinder(h=screw_nut_h+eps, d=screw_nut_dia);
+        cylinder(h=screw_hole_h+eps, d=screw_hole_dia);
+    }
+}
+
+module screw_holes() {
+    translate(s1_pos) single_screw_hole();
+    translate(s2_pos) mirror([1,1,0]) single_screw_hole();
+    translate(s3_pos) mirror([0,1,0]) single_screw_hole();
+    translate(s4_pos) mirror([1,0,0]) single_screw_hole();
+}
+
+conn_1_y = 12.0;
+conn_1_l = 20.0;
+conn_1_h = 7;
+conn_2_y =  conn_1_y+conn_1_l+6.0;
+conn_2_l = conn_1_l;
+conn_2_h = conn_1_h;
+conn_pwr_y = 12.5;
+conn_pwr_l = 10.0;
+conn_pwr_h = 10;
+conn_extra = 1;
+module conn_holes() {
+    e = conn_extra;
+    translate([0, -e/2, -e/2])
+    translate([0, 0, bottom_thickness+screw_base_h+board_thickness])
+    translate([-pcb_width/2, -pcb_height/2]) {
+        translate([-alot, conn_1_y]) cube([alot, conn_1_l+e, conn_1_h+e]);
+        translate([-alot, conn_2_y]) cube([alot, conn_2_l+e, conn_2_h+e]);
+        translate([0, conn_pwr_y]) cube([alot, conn_pwr_l+e, conn_pwr_h+e]);
+    }
+}
+
+module base() {
+    difference() {
+        union() {
+            screw_bases();
+            shell(bottom_thickness,
+                screw_base_h + board_thickness + height_above_board,
+                pcb_extra,
+                radius_horiz=0);
+        }
+        screw_holes();
+        conn_holes();
+    }
+}
+
+module single_clamp_stud_part(liph, clamp_tube_h, extra) {
+    translate([0, 0, lid_thickness-eps]) union() {
+        cylinder(h=clamp_tube_h, d=clamp_tube_dia+extra);
+        linear_extrude(height=liph+eps) {
+            translate([-clamp_tube_dia/2-extra/2, 0]) square([alot, alot]);
+            translate([0, -clamp_tube_dia/2-extra/2]) square([alot, alot]);
+        }
+    }
+}
+
+module single_clamp_stud(liph) {
+    e = clamp_tube_base_extra;
+    single_clamp_stud_part(liph, liph+eps, e);
+    single_clamp_stud_part(liph, clamp_tube_h, 0);
+}
+
+module lid_screw_hole() {
+    cylinder(h=alot, d=screw_hole_dia);
+    cylinder(h=screw_head_hole_depth+eps, d=screw_head_hole_dia);
+}
+
+module lid() {
+    e = lid_lip_extra;
+    iw = pcb_width+pcb_extra-e+eps;
+    ih = pcb_height+pcb_extra-e+eps;
+    liph = lid_lip_depth+height_lid_inner;
+    difference() {
+        union() {
+            shell(lid_thickness,
+                height_lid_inner,
+                inner_extra=-eps,
+                radius_horiz=corner_radius_lid);
+            difference() {
+                translate([-iw/2, -ih/2, lid_thickness-eps]) cube([iw, ih, liph+eps]);
+                minkowski() {
+                    translate([-iw/2+e/2+liph, -ih/2+e/2+liph, lid_thickness-eps]) cube([iw-e-liph*2, ih-e-liph*2, eps]);
+                    cylinder(d1=0, d2=2*liph+2*eps, h=2*liph+2*eps);
+                };
+            }
+            intersection() {
+                translate([-iw/2, -ih/2, lid_thickness-eps]) cube([iw, ih, alot]);
+                union() {
+                    translate(s1_pos) single_clamp_stud(liph);
+                    translate(s2_pos) mirror([1,1,0]) single_clamp_stud(liph);
+                    translate(s3_pos) mirror([0,1,0]) single_clamp_stud(liph);
+                    translate(s4_pos) mirror([1,0,0]) single_clamp_stud(liph);
+                }
+            }
+        }
+        translate([0, 0, -eps]) {
+            translate(s1_pos) lid_screw_hole();
+            translate(s2_pos) lid_screw_hole();
+            translate(s3_pos) lid_screw_hole();
+            translate(s4_pos) lid_screw_hole();
+        }
+    }
+}
+
+module enclosure() {
+
+
+    intersection() {
+        //translate([-pcb_width, -40, 0]) cube (35, 20, 20);
+        //translate([-pcb_width-15, 0, 0]) base();
+    };
+
+
+    intersection() {
+        //translate([-alot/2, -10, -alot/2]) cube ([alot, 20, alot]);
+        union () {
+            render()    lid();
+            
+            render() translate([0,0,eps]) mirror([0,0,1]) intersection() {
+                translate([-alot/2, -alot/2, 0]) cube([alot, alot, alot]);
+                translate([0,0,-0.2]) scale([0.3, 0.3, 0.04]) surface("depthmap_03.png", center=true);
+            };
+            
+        };
+    };
+
+}
+
+enclosure($fn=25);

enclosure/lyza/lyza_enclosure_v2.scad

@@ -0,0 +1,233 @@
+
+/* A small, arbitrary unit to guard against rounding errors */
+eps = 0.1;
+alot = 1000;
+
+/* Base PCB size */
+pcb_width = 50;
+pcb_height = 70;
+/* Extra space around PCB */
+pcb_extra = 1;
+
+/* Offset of screw hole centers from left/right/top/bottom side of board */
+screw_offx_l = 5;
+screw_offx_r = 5;
+screw_offx_t = 5;
+screw_offx_b = 5;
+
+/* Thickness of bottom, walls, lid (middle sections) */
+bottom_thickness = 2;
+wall_thickness = 2;
+lid_thickness = 2;
+
+/* Outside corner radius */
+corner_radius_wall = 3;
+corner_radius_lid = 2;
+
+screw_base_dia = 8;
+screw_base_h = 5;
+screw_nut_dia = 5.4;
+screw_nut_h = 6;
+screw_hole_dia = 3.2;
+screw_hole_h = 6;
+board_thickness = 1.6;
+height_above_board = 18;
+height_lid_inner = 2;
+lid_lip_depth = 2;
+lid_lip_width = 2;
+lid_lip_extra = 1;
+
+clamp_tube_dia = screw_base_dia;
+clamp_tube_h = 0; //height_above_board+height_lid_inner;
+clamp_tube_base_extra = 2;
+
+screw_head_hole_dia = 6.5;
+screw_head_hole_depth = 3;
+
+module rounded_rect(w, h, r) {
+    hull(){
+        translate([w/2-r, h/2-r]) circle(r);
+        translate([-(w/2-r), h/2-r]) circle(r);
+        translate([w/2-r, -(h/2-r)]) circle(r);
+        translate([-(w/2-r), -(h/2-r)]) circle(r);
+    }
+}
+
+module shell(thickness, inner_height, inner_extra, radius_horiz) {
+    d = thickness + inner_height;
+    rh=radius_horiz;
+    difference(){
+        r = corner_radius_wall;
+        w = pcb_width+pcb_extra+2*wall_thickness;
+        h = pcb_height+pcb_extra+2*wall_thickness;
+        hull() {
+            translate([0, 0, rh]) linear_extrude(height=d-rh) rounded_rect(w, h, r);
+            linear_extrude(height=eps) rounded_rect(w-2*rh, h-2*rh, r);
+        }
+        
+        iw = pcb_width+inner_extra;
+        ih = pcb_height+inner_extra;
+        translate([-iw/2, -ih/2, bottom_thickness]) cube([iw, ih, h]);
+    }
+}
+
+module single_screw_base() {
+    translate([0, 0, bottom_thickness-eps]) linear_extrude(height=screw_base_h+eps) {
+        circle(d=screw_base_dia);
+        translate([-screw_base_dia/2, 0]) square([alot, alot]);
+        translate([0, -screw_base_dia/2]) square([alot, alot]);
+    }
+}
+
+w = pcb_width;
+h = pcb_height;
+e = pcb_extra;
+l = screw_offx_l;
+r = screw_offx_r;
+t = screw_offx_t;
+b = screw_offx_b;
+s1_pos = [w/2-l, h/2-b];
+s2_pos = [-w/2+r, -h/2+t];
+s3_pos = [w/2-l, -h/2+t];
+s4_pos = [-w/2+r, h/2-b];
+module screw_bases() {
+    intersection() {
+        union() {
+            translate(s1_pos) single_screw_base();
+            translate(s2_pos) mirror([1,1,0]) single_screw_base();
+            translate(s3_pos) mirror([0,1,0]) single_screw_base();
+            translate(s4_pos) mirror([1,0,0]) single_screw_base();
+        }
+        cube([w+e+eps, h+e+eps, alot], center=true);
+    }
+}
+
+module single_screw_hole() {
+    translate([0, 0, bottom_thickness+screw_base_h+eps])
+    mirror([0,0,1])
+    union() {
+        cylinder(h=screw_nut_h+eps, d=screw_nut_dia);
+        cylinder(h=screw_hole_h+eps, d=screw_hole_dia);
+    }
+}
+
+module screw_holes() {
+    translate(s1_pos) single_screw_hole();
+    translate(s2_pos) mirror([1,1,0]) single_screw_hole();
+    translate(s3_pos) mirror([0,1,0]) single_screw_hole();
+    translate(s4_pos) mirror([1,0,0]) single_screw_hole();
+}
+
+conn_1_y = 12.0;
+conn_1_l = 20.0;
+conn_1_h = 7;
+conn_2_y =  conn_1_y+conn_1_l+6.0;
+conn_2_l = conn_1_l;
+conn_2_h = conn_1_h;
+conn_pwr_y = 12.5;
+conn_pwr_l = 10.0;
+conn_pwr_h = 10;
+conn_extra = 1;
+module conn_holes() {
+    e = conn_extra;
+    translate([0, -e/2, -e/2])
+    translate([0, 0, bottom_thickness+screw_base_h+board_thickness])
+    translate([-pcb_width/2, -pcb_height/2]) {
+        translate([-alot, conn_1_y]) cube([alot, conn_1_l+e, conn_1_h+e]);
+        translate([-alot, conn_2_y]) cube([alot, conn_2_l+e, conn_2_h+e]);
+        translate([0, conn_pwr_y]) cube([alot, conn_pwr_l+e, conn_pwr_h+e]);
+    }
+}
+
+module base() {
+    difference() {
+        union() {
+            screw_bases();
+            shell(bottom_thickness,
+                screw_base_h + board_thickness + height_above_board,
+                pcb_extra,
+                radius_horiz=0);
+        }
+        screw_holes();
+        conn_holes();
+    }
+}
+
+module single_clamp_stud_part(liph, clamp_tube_h, extra) {
+    translate([0, 0, lid_thickness-eps]) union() {
+        cylinder(h=clamp_tube_h, d=clamp_tube_dia+extra);
+        linear_extrude(height=liph+eps) {
+            translate([-clamp_tube_dia/2-extra/2, 0]) square([alot, alot]);
+            translate([0, -clamp_tube_dia/2-extra/2]) square([alot, alot]);
+        }
+    }
+}
+
+module single_clamp_stud(liph) {
+    e = clamp_tube_base_extra;
+    single_clamp_stud_part(liph, liph+eps, e);
+    single_clamp_stud_part(liph, clamp_tube_h, 0);
+}
+
+module lid_screw_hole() {
+    cylinder(h=alot, d=screw_hole_dia);
+    cylinder(h=screw_head_hole_depth+eps, d=screw_head_hole_dia);
+}
+
+module lid() {
+    e = lid_lip_extra;
+    iw = pcb_width+pcb_extra-e+eps;
+    ih = pcb_height+pcb_extra-e+eps;
+    liph = lid_lip_depth+height_lid_inner;
+    difference() {
+        union() {
+            shell(lid_thickness,
+                height_lid_inner,
+                inner_extra=-eps,
+                radius_horiz=corner_radius_lid);
+            difference() {
+                translate([-iw/2, -ih/2, lid_thickness-eps]) cube([iw, ih, liph+eps]);
+                // FIXME translate([-iw/2+e/2, -ih/2+e/2, lid_thickness-eps]) cube([iw-e, ih-e, liph+2*eps]);
+            }
+            intersection() {
+                translate([-iw/2, -ih/2, lid_thickness-eps]) cube([iw, ih, alot]);
+                union() {
+                    translate(s1_pos) single_clamp_stud(liph);
+                    translate(s2_pos) mirror([1,1,0]) single_clamp_stud(liph);
+                    translate(s3_pos) mirror([0,1,0]) single_clamp_stud(liph);
+                    translate(s4_pos) mirror([1,0,0]) single_clamp_stud(liph);
+                }
+            }
+        }
+        translate([0, 0, -eps]) {
+            translate(s1_pos) lid_screw_hole();
+            translate(s2_pos) lid_screw_hole();
+            translate(s3_pos) lid_screw_hole();
+            translate(s4_pos) lid_screw_hole();
+        }
+    }
+}
+
+module enclosure() {
+
+
+    intersection() {
+        //translate([-pcb_width, -40, 0]) cube (35, 20, 20);
+        translate([-pcb_width-15, 0, 0]) base();
+    };
+
+/*
+    intersection() {
+        //translate([-alot/2, -10, -alot/2]) cube ([alot, 20, alot]);
+        union () {
+            render()    lid();
+            render() translate([0,0,eps]) mirror([0,0,1]) intersection() {
+                translate([-alot/2, -alot/2, 0]) cube([alot, alot, alot]);
+                translate([0,0,-0.2]) scale([0.3, 0.3, 0.04]) surface("depthmap_03.png", center=true);
+            };
+        };
+    };
+*/
+}
+
+enclosure($fn=25);

enclosure/lyza/standoffs.scad

@@ -0,0 +1,17 @@
+inner_dia = 3.0;
+outer_dia = inner_dia + 2*1.5;
+height    = 18.0;
+eps       = 0.1;
+
+module standoff() {
+    difference() {
+        cylinder(h=height, d=outer_dia);
+        translate([0, 0, -eps]) cylinder(h=height+2*eps, d=inner_dia);
+    }
+}
+
+module standoff_group() {
+    standoff();
+}
+
+standoff_group($fn=25);

enclosure/rails/openstep_base.scad

@@ -0,0 +1,68 @@
+eps=0.01;
+
+nut_dia = 5.3;
+nut_depth=5.5;
+
+module nut_base(w=10, o) {
+    difference() {
+        cylinder(d=w, h=nut_depth+o);
+        translate([0, 0, o-eps]) cylinder(d=nut_dia, h=nut_depth+2*eps);
+    }
+}
+
+module raspi_holder(w, h, x=4) {
+    difference() {
+        union() {
+            cube([50+w, 50+w, h]);
+            
+            translate([w/2, w/2, 0]) union() {
+                nut_base(o=h);
+                translate([50, 0, 0]) {
+                    nut_base(o=h);
+                    translate([0, 50, 0]) nut_base(o=h);
+                }
+                translate([0, 50, 0]) nut_base(o=h);
+            }
+        }
+        translate([w, w, -eps]) cube([50-w, 50-w, h+2*eps]);
+        
+        
+        translate([w/2, w/2, -eps]) {
+            cylinder(d=x, h=h+2*eps);
+            translate([50, 0, 0]) {
+                cylinder(d=x, h=h+2*eps);
+                translate([0, 50, 0]) cylinder(d=x, h=h+2*eps);
+            }
+            translate([0, 50, 0]) cylinder(d=x, h=h+2*eps);
+        }
+    }
+}
+
+module rev_nut_base(w=10, h=5, a=45, x=4, th=7, tw=10) {
+    rotate([0, 0, a])
+    translate([-w/2, -w, 0]) difference() {
+        union() {
+            cube([w, w, h]);
+            translate([w/2, w, 0]) cylinder(d=tw, h=th);
+        }
+        translate([w/2, w, -eps]) {
+            cylinder(d=nut_dia, h=nut_depth+2*eps);
+            cylinder(d=x, h=th+2*eps);
+        }
+    }
+}
+
+module raspi_adapter(w=10, h=5, s=30) {
+    translate([-(50+w)/2, -(50+w)/2, 0]) raspi_holder(w=w, h=h);
+    difference() {
+        union() {
+            translate([-s, -(50+w)/2-5, 0]) rev_nut_base(a=-30-180);
+            translate([ s, -(50+w)/2-5, 0]) rev_nut_base(a=-60-90);
+            translate([-s,  (50+w)/2+5, 0]) rev_nut_base(a=-60+90);
+            translate([ s,  (50+w)/2+5, 0]) rev_nut_base(a=-30);
+        }
+        cube([60, 60, 100], center=true);
+    }
+}
+
+raspi_adapter($fn=25);

enclosure/rails/raspi_adapter.scad

@@ -0,0 +1,68 @@
+eps=0.01;
+
+nut_dia = 5.3;
+nut_depth=5.5;
+
+module nut_base(w=10, o) {
+    difference() {
+        cylinder(d=w, h=nut_depth+o);
+        translate([0, 0, o-eps]) cylinder(d=nut_dia, h=nut_depth+2*eps);
+    }
+}
+
+module raspi_holder(w, h, x=4) {
+    difference() {
+        union() {
+            cube([58+w, 49+w, h]);
+            
+            translate([w/2, w/2, 0]) union() {
+                nut_base(o=h);
+                translate([58, 0, 0]) {
+                    nut_base(o=h);
+                    translate([0, 49, 0]) nut_base(o=h);
+                }
+                translate([0, 49, 0]) nut_base(o=h);
+            }
+        }
+        translate([w, w, -eps]) cube([58-w, 49-w, h+2*eps]);
+        
+        
+        translate([w/2, w/2, -eps]) {
+            cylinder(d=x, h=h+2*eps);
+            translate([58, 0, 0]) {
+                cylinder(d=x, h=h+2*eps);
+                translate([0, 49, 0]) cylinder(d=x, h=h+2*eps);
+            }
+            translate([0, 49, 0]) cylinder(d=x, h=h+2*eps);
+        }
+    }
+}
+
+module rev_nut_base(w=10, h=5, a=45, x=4, th=7, tw=10) {
+    rotate([0, 0, a])
+    translate([-w/2, -w, 0]) difference() {
+        union() {
+            cube([w, w, h]);
+            translate([w/2, w, 0]) cylinder(d=tw, h=th);
+        }
+        translate([w/2, w, -eps]) {
+            cylinder(d=nut_dia, h=nut_depth+2*eps);
+            cylinder(d=x, h=th+2*eps);
+        }
+    }
+}
+
+module raspi_adapter(w=10, h=5, s=30) {
+    translate([-(58+w)/2, -(49+w)/2, 0]) raspi_holder(w=w, h=h);
+    difference() {
+        union() {
+            translate([-s, -(49+w)/2-5, 0]) rev_nut_base(a=-15-180);
+            translate([ s, -(49+w)/2-5, 0]) rev_nut_base(a=-75-90);
+            translate([-s,  (49+w)/2+5, 0]) rev_nut_base(a=-75+90);
+            translate([ s,  (49+w)/2+5, 0]) rev_nut_base(a=-15);
+        }
+        cube([64, 55, 100], center=true);
+    }
+}
+
+raspi_adapter($fn=25);

enclosure/rails/rs485_base.scad

@@ -0,0 +1,43 @@
+eps=0.01;
+
+nut_dia = 5.3;
+nut_depth=5.5;
+
+bx=71.12;
+by=35.56;
+
+w=8;
+h=5;
+s=30;
+d=w;
+bh=8;
+sd=4;
+
+module qc(a, b, d, h) {
+    translate([-a, -b, 0]) cylinder(d=d, h=h);
+    translate([-a,  b, 0]) cylinder(d=d, h=h);
+    translate([ a, -b, 0]) cylinder(d=d, h=h);
+    translate([ a,  b, 0]) cylinder(d=d, h=h);
+}
+
+module foo() {
+    difference() {
+        union() {
+            translate([0, by/2, h/2]) cube([2*s+w, w, h], center=true);
+            translate([0, -by/2, h/2]) cube([2*s+w, w, h], center=true);
+            translate([-bx/2, 0, h/2]) cube([w, by, h], center=true);
+            translate([bx/2, 0, h/2]) cube([w, by, h], center=true);
+
+            qc(a=bx/2, b=by/2, d=d, h=bh);
+            qc(a=s, b=by/2, d=d, h=bh);
+        }
+        translate([0, 0, -eps]) {
+            qc(a=bx/2, b=by/2, d=sd, h=bh+2*eps);
+            qc(a=s, b=by/2, d=sd, h=bh+2*eps);
+            translate([0, 0, bh-nut_depth+eps]) qc(a=bx/2, b=by/2, d=nut_dia, h=nut_depth+eps);
+            qc(a=s, b=by/2, d=nut_dia, h=nut_depth+eps);
+        }
+    }
+}
+
+foo($fn=25);