sealing-box: support $sealingbox_crude

diff --git a/sealing-box.scad.m4 b/sealing-box.scad.m4
index 31f7f65a1bd06c5fb905d96953f5e080d201d033..6f249386b9d94c2717f212b5c97057d184bf6b3d 100644 (file)
--- a/sealing-box.scad.m4
+++ b/sealing-box.scad.m4
@@ -28,6 +28,7 @@
 //  $sealingbox_cnrrad
 
 $sealingbox_cnrrad = 10;
+$sealingbox_crude = 1;
 
 m4_define(`BoxLocals',`
   xbox = $sealingbox_sz[0];
@@ -47,6 +48,8 @@ m4_define(`BoxLocals',`
   tubesealrad = 2.0;
 ')
 
+m4_define(`BoxFn',`$fn=($1) / $sealingbox_crude')
+
 m4_dnl Box_Part($1=transl_x,$2=transl_y, $3=rot_z,$4=mirror_xy)
 m4_dnl          $5=kind, $6=kindargs, $7=profile(profileargsargs))
 m4_define(`Box_Part',`
@@ -80,7 +83,7 @@ m4_define(`BoxPart_Extrude_Arc',`
         scale(500)
         mirror([($1)<0, 0,0])
         FArcSegment_mask($2);
-      rotate_extrude(convexity=10, $fs=1, $fn=36)
+      rotate_extrude(convexity=10, $fs=1, BoxFn(36))
         mirror([($1)<0, 0,0])
         translate([+($1),0,0]){
           $3
@@ -106,7 +109,7 @@ module SealingBox_WallProfile(){
   BoxLocals
   z = zbox - innertube - tubesealrad;
   translate([0, -0.1]) square([wall, z]);
-  translate([tubesealrad, z]) circle(r=tubesealrad, $fn=20);
+  translate([tubesealrad, z]) circle(r=tubesealrad, BoxFn(20));
 }
 
 module SealingBox_FloorProfile(){
@@ -131,7 +134,7 @@ module SealingBox_LidProfile(){
                 [0, -zbox]
                 ]) {
          translate(t)
-           circle(r= tubesealrad + innertube, $fn=20);
+           circle(r= tubesealrad + innertube, BoxFn(20));
        }
     }
   }