chiark / gitweb /
sleepphone-cable-box: support trick, print orientation
[reprap-play.git] / sealing-box.scad.m4
index 21d54ec..dbfb220 100644 (file)
@@ -5,18 +5,51 @@
 // A. Rectangular boxes
 //      1. include <sealing-box.scad>
 //      2. assign() values to (xxx these should be $ variables)
-//           ts_xbox (outer dimensions)
-//           ts_ybox (outer dimension)
-//           ts_zbox (??? xxx)
-//           ts_cnrrad (outer radius of corners, leave at default normall)
-//                 xxx default should be in this file
+//           $sealingbox_wallth
+//           $sealingbox_sz[0] (outer dimension)
+//           $sealingbox_sz[1] (outer dimension)
+//           $sealingbox_sz[2] (inner dimension)
+//           $sealingbox_ceilth
+//           $sealingbox_floorth
+//           $sealingbox_wallth
 //      3. use the modules
 //           SealingBox_RectBox
 //           SealingBox_RectLid
+//           (origin is notional outside corner, but at level of
+//            inside of base; box extends to positive x,y,z)
 //
 // B. Complicated shapes, but harder work
 //      1. Be a .m4 file and m4_include sealing-box.scad.m4
-//      2. Maybe define your own BoxDoShapeRect xxx tbd
+//      2. Define your own BoxDoShapeSomething like BoxDoShapeRect
+//      3. Invoke BoxUseShape
+//      4. Use the Box and Lid modules generated
+//
+// Other settings
+//  $sealingbox_cnrrad
+
+$sealingbox_cnrrad = 10;
+$sealingbox_crude = false;
+$sealingbox_inner_slop = 0.2;
+
+m4_define(`BoxLocals',`
+  xbox = $sealingbox_sz[0];
+  ybox = $sealingbox_sz[1];
+  zbox = $sealingbox_sz[2];
+  wall = $sealingbox_wallth;
+  floorth = $sealingbox_floorth;
+  ceilth = $sealingbox_ceilth;
+  cnrrad = $sealingbox_cnrrad;
+
+  xbox_lin = xbox - cnrrad*2;
+  ybox_lin = ybox - cnrrad*2;
+')
+
+m4_define(`innertube', `(1.0 + 0.2)')
+m4_define(`lidoverlap', `1.5')
+m4_define(`lidoverhang', `6')
+m4_define(`tubesealrad', `2.0')
+
+m4_define(`BoxFn',`$fn= $sealingbox_crude ? ($2) : ($1)')
 
 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))
@@ -51,7 +84,7 @@ 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(36,8))
         mirror([($1)<0, 0,0])
         translate([+($1),0,0]){
           $3
@@ -59,68 +92,89 @@ m4_define(`BoxPart_Extrude_Arc',`
     }
 ')
 
-ts_cidoff = (ts_cnrrad * (1-.7) + wallthick * .8) * [1,1];
-
-ts_xbox_lin = ts_xbox - ts_cnrrad*2;
-ts_ybox_lin = ts_ybox - ts_cnrrad*2;
-
-m4_dnl TestSealDoBoxShape(`profile(profileargs)');
-m4_define(`TestSealDoBoxShape',`
-  Box_Part(0,               ts_cnrrad,    0,0, Linear,`ts_ybox_lin', `$1' )
-  Box_Part(0, ts_ybox-ts_cnrrad,          0,0, Arc,`-ts_cnrrad,90' , `$1' )
-  Box_Part(ts_cnrrad,       ts_ybox,    -90,0, Linear,`ts_xbox_lin', `$1' )
-  Box_Part(ts_xbox-ts_cnrrad, ts_ybox,  -90,0, Arc,`-ts_cnrrad,90' , `$1' )
-  Box_Part(ts_xbox, ts_ybox-ts_cnrrad, -180,0, Linear,`ts_ybox_lin', `$1' )
-  Box_Part(ts_xbox,         ts_cnrrad, -180,0, Arc,`-ts_cnrrad,90' , `$1' )
-  Box_Part(ts_xbox-ts_cnrrad, 0,       -270,0, Linear,`ts_xbox_lin', `$1' )
-  Box_Part(ts_cnrrad,         0,       -270,0, Arc,`-ts_cnrrad,90' , `$1' )
+m4_dnl BoxDoShapeRect(`profile(profileargs)');
+m4_define(`BoxDoShapeRect',`
+  Box_Part(0,           cnrrad,         0,0, Linear,`ybox_lin', `$1' )
+  Box_Part(0,           ybox-cnrrad,    0,0, Arc,`-cnrrad,90' , `$1' )
+  Box_Part(cnrrad,      ybox,         -90,0, Linear,`xbox_lin', `$1' )
+  Box_Part(xbox-cnrrad, ybox,         -90,0, Arc,`-cnrrad,90' , `$1' )
+  Box_Part(xbox,        ybox-cnrrad, -180,0, Linear,`ybox_lin', `$1' )
+  Box_Part(xbox,        cnrrad,      -180,0, Arc,`-cnrrad,90' , `$1' )
+  Box_Part(xbox-cnrrad, 0,           -270,0, Linear,`xbox_lin', `$1' )
+  Box_Part(cnrrad,      0,           -270,0, Arc,`-cnrrad,90' , `$1' )
 ')
 
 m4_dnl '
 
-module WallProfile(){
-  z = ts_zbox - innertube - tubesealrad;
-  translate([0, -0.1]) square([wallthick, z]);
-  translate([tubesealrad, z]) circle(r=tubesealrad, $fn=20);
+module SealingBox_WallProfile(){
+  BoxLocals
+  z = zbox - innertube - tubesealrad;
+  translate([0, -0.1]) square([wall, z]);
+  translate([tubesealrad, z]) circle(r=tubesealrad, BoxFn(20,6));
 }
 
-module FloorProfile(){
-  mirror([0,1]) square([wallthick, floorth]);
+module SealingBox_FloorProfile(){
+  BoxLocals
+  mirror([0,1]) square([wall, floorth]);
 }
 
-module LidProfile(){
+function SealingBox_lidbigger() = lidoverlap + innertube;
+
+module SealingBox_LidProfile(){
+  BoxLocals
   rad = tubesealrad + innertube;
-  morex = wallthick;
+  morex = wall;
+  inner_buttress_h = tubesealrad*1.5 + innertube + ceilth;
+
   difference(){
-    translate([-lidoverlap - innertube,
-              ts_zbox - lidoverhang - innertube])
-      square([lidoverlap + innertube + wallthick,
+    translate([0, zbox + ceilth]) mirror([0,1]) {
+      translate([-SealingBox_lidbigger(),
+                0])
+      square([lidoverlap + innertube + tubesealrad,
              lidoverhang + innertube + ceilth]);
+      square([tubesealrad*2 + innertube + lidoverlap,
+             inner_buttress_h]);
+    }
     hull(){
       translate([tubesealrad,
-                ts_zbox - innertube - tubesealrad])
+                zbox - innertube - tubesealrad])
        for (t=[ [0,0],
-                [morex*2, 0],
-                [0, -ts_zbox]
+                [0, -zbox]
                 ]) {
          translate(t)
-           circle(r= tubesealrad + innertube, $fn=20);
+           circle(r= tubesealrad + innertube, BoxFn(20,6));
        }
     }
   }
+  translate([tubesealrad*2 + $sealingbox_inner_slop,
+            zbox + ceilth]) {
+    mirror([0,1]) {
+      square([lidoverlap + innertube,
+             inner_buttress_h]);
+    }
+  }
 }
 
-module CeilProfile(){
-  translate([0, ts_zbox])
-    square([wallthick*2, ceilth]);
+module SealingBox_CeilProfile(){
+  BoxLocals
+  translate([0, zbox])
+    square([wall*2, ceilth]);
 }
 
-module TestSealBoxBox(){
-  TestSealDoBoxShape(WallProfile(););
-  hull(){ TestSealDoBoxShape(FloorProfile();); }
-}
+// BoxDoShape(Basename,BoxDoShapeSomething)
+// generates modules BasenameBox and BasenameLid
+m4_define(`BoxUseShape',`
+  module $1Box(){
+    BoxLocals
+    $2(SealingBox_WallProfile(););
+    hull(){ $2(SealingBox_FloorProfile();); }
+  }
 
-module TestSealBoxLid(){ ////toplevel
-  TestSealDoBoxShape(LidProfile(););
-  hull(){ TestSealDoBoxShape(CeilProfile();); }
-}
+  module $1Lid(){
+    BoxLocals
+    $2(SealingBox_LidProfile(););
+    hull(){ $2(SealingBox_CeilProfile();); }
+  }
+')
+
+BoxUseShape(`SealingBox_Rect',`BoxDoShapeRect')