X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;ds=sidebyside;f=sealing-box.scad.m4;h=3130e6d5463aa322d4ae98fdd5f09d43e4d3495f;hb=67913471b762962998973556e5e5db6e9ad664d9;hp=21d54ec9873d36887b98fc5f731b6ec3e7170d38;hpb=861c306bb597c7ee0736fb4127e50160bd417e2a;p=reprap-play.git

diff --git a/sealing-box.scad.m4 b/sealing-box.scad.m4
index 21d54ec..3130e6d 100644
--- a/sealing-box.scad.m4
+++ b/sealing-box.scad.m4
@@ -5,9 +5,13 @@
 // 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)
+//           $sealingbox_wallth
+//           $sealingbox_xbox (outer dimension)
+//           $sealingbox_ybox (outer dimension)
+//           $sealingbox_zbox (inner dimension)
+//           $sealingbox_ceilth
+//           $sealingbox_floorth
+//           $sealingbox_wallth
 //           ts_cnrrad (outer radius of corners, leave at default normall)
 //                 xxx default should be in this file
 //      3. use the modules
@@ -16,7 +20,23 @@
 //
 // 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
+
+m4_define(`BoxLocals',`
+  wall = $sealingbox_wallth;
+  floorth = $sealingbox_floorth;
+  ceilth = $sealingbox_ceilth;
+  xbox = $sealingbox_xbox;
+  ybox = $sealingbox_ybox;
+  zbox = $sealingbox_zbox;
+
+  ts_cidoff = (ts_cnrrad * (1-.7) + wall * .8) * [1,1];
+
+  xbox_lin = xbox - ts_cnrrad*2;
+  ybox_lin = ybox - ts_cnrrad*2;
+')
 
 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))
@@ -59,49 +79,47 @@ 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' )
+m4_dnl BoxDoShapeRect(`profile(profileargs)');
+m4_define(`BoxDoShapeRect',`
+  Box_Part(0,               ts_cnrrad,    0,0, Linear,`ybox_lin', `$1' )
+  Box_Part(0,    ybox-ts_cnrrad,          0,0, Arc,`-ts_cnrrad,90' , `$1' )
+  Box_Part(ts_cnrrad,       ybox,       -90,0, Linear,`xbox_lin', `$1' )
+  Box_Part(xbox-ts_cnrrad,  ybox,       -90,0, Arc,`-ts_cnrrad,90' , `$1' )
+  Box_Part(xbox,       ybox-ts_cnrrad, -180,0, Linear,`ybox_lin', `$1' )
+  Box_Part(xbox,            ts_cnrrad, -180,0, Arc,`-ts_cnrrad,90' , `$1' )
+  Box_Part(xbox-ts_cnrrad,    0,       -270,0, Linear,`xbox_lin', `$1' )
   Box_Part(ts_cnrrad,         0,       -270,0, Arc,`-ts_cnrrad,90' , `$1' )
 ')
 
 m4_dnl '
 
-module WallProfile(){
-  z = ts_zbox - innertube - tubesealrad;
-  translate([0, -0.1]) square([wallthick, z]);
+module SealingBox_WallProfile(){
+  BoxLocals
+  z = zbox - innertube - tubesealrad;
+  translate([0, -0.1]) square([wall, z]);
   translate([tubesealrad, z]) circle(r=tubesealrad, $fn=20);
 }
 
-module FloorProfile(){
-  mirror([0,1]) square([wallthick, floorth]);
+module SealingBox_FloorProfile(){
+  BoxLocals
+  mirror([0,1]) square([wall, floorth]);
 }
 
-module LidProfile(){
+module SealingBox_LidProfile(){
+  BoxLocals
   rad = tubesealrad + innertube;
-  morex = wallthick;
+  morex = wall;
   difference(){
     translate([-lidoverlap - innertube,
-	       ts_zbox - lidoverhang - innertube])
-      square([lidoverlap + innertube + wallthick,
+	       zbox - lidoverhang - innertube])
+      square([lidoverlap + innertube + wall,
 	      lidoverhang + innertube + ceilth]);
     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);
@@ -110,17 +128,26 @@ module LidProfile(){
   }
 }
 
-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(`TestSealBox',`BoxDoShapeRect')