X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=doveclip.scad;h=cc2a02bcacd12c1554f66afae98bd6d78636e137;hp=2d465a8d4f1b79be1bb4a92f812e48507f69ba75;hb=4dbc80ccc15f7880d408d9749c178b4fe759faae;hpb=b571e6866a98de25b86fc585801c610a8cfc9646

diff --git a/doveclip.scad b/doveclip.scad
index 2d465a8..cc2a02b 100644
--- a/doveclip.scad
+++ b/doveclip.scad
@@ -3,10 +3,10 @@
 toothheight = 1.2;
 webthick = 1.8;
 height = 7;
-pindepth = 10;
+pinlengthfact = 1.2;
 nomrad = height/2 - toothheight;
-minrad = nomrad - 0.5;
-maxrad = nomrad + 0.5;
+minrad = nomrad - 0.75;
+maxrad = nomrad + 0.25;
 jawthick = 1.5;
 
 webgap = 0.4;
@@ -15,21 +15,26 @@ basepinclear = 1.0;
 toothgap = webthick + webgap*2;
 basethick = toothheight;
 
-module DoveClipPin(height=height) {
-  translate([0,0, height/2]) intersection(){
+module DoveClipPin(h=height) {
+  pinh = h * pinlengthfact;
+  pinheight = nomrad*2 + jawthick*2;
+  translate([0,0, pinheight/2]) intersection(){
     union(){
       for (m=[0,1]) {
-	mirror([0,0,m]) translate([0,0,height/2]) rotate([90,0,0])
-	  cylinder($fn=20, r1=minrad, r2=maxrad, h=pindepth);
+	mirror([0,0,m]) translate([0,0,pinheight/2]) rotate([90,0,0])
+	  cylinder($fn=20, r1=minrad, r2=maxrad, h=pinh);
       }
-      translate([-webthick/2, -pindepth, -height/2-1])
-	cube([webthick, pindepth, height+2]);
+      translate([-webthick/2, -pinh, -pinheight/2-1])
+	cube([webthick, pinh, pinheight+2]);
     }
-    translate([-maxrad-1, -pindepth-1, -height/2])
-      cube([maxrad*2+2, pindepth+2, height]);
+    translate([-maxrad-1, -pinh-1, -pinheight/2])
+      cube([maxrad*2+2, pinh+2, pinheight]);
   }
 }
 
+function DoveClip_depth() =
+  basethick + nomrad*2 + toothheight;
+
 module DoveClipEnd(baseextend=1, h=7) {
   cubex = nomrad*2 + jawthick*2;
   cube0y = -basethick-nomrad*2-toothheight;
@@ -45,19 +50,53 @@ module DoveClipEnd(baseextend=1, h=7) {
 }
 
 module DoveClipPair(baseextend=1, h=7) {
-  delta = nomrad*2 + jawthick*2 + toothgap;
+  delta =  nomrad*2 + jawthick*2 + toothgap;
   for (x=[-delta/2,delta/2])
     translate([x,0,0])
       DoveClipEnd(baseextend=baseextend, h=h);
 }
 
-module DoveClipPairBase(baseextend=0.1, h=7) {
+module DoveClipPairBase(baseextend=0.1, h=7, count=2) {
   delta = nomrad*2 + jawthick;
   intrude = nomrad + basethick - basepinclear;
-  for (x=[-delta/2,delta/2]) {
-    translate([x,0,0])
+  for (i=[0:count-1]) {
+    translate([(i - (count-1)/2) * delta, 0, 0])
       DoveClipEnd(baseextend=baseextend, h=h);
   }
-  translate([-delta, -intrude, 0])
-    cube([delta*2, intrude+0.1, h]);
+  translate([-delta * count/2, -intrude, 0])
+    cube([delta * count, intrude+0.1, h]);
+}
+
+module DoveClipPairSane(baseextend=0, h=7, count=2) {
+  rotate([0,0,90])
+    translate([0, DoveClip_depth(), 0])
+    DoveClipPairBase(baseextend=baseextend, h=h, count=count);
 }
+
+function DoveClipPairSane_width(count=2) =
+  2 * (nomrad + jawthick + ((nomrad*2 + jawthick) * (count-1)/2));
+
+module DoveClipExtender(length, ha=7, hb=7, counta=2, countb=2,
+			pillarw=3, pillarh=6, webthick=1) {
+  mirror([1,0,0])
+    DoveClipPairSane(h=ha, count=counta);
+  translate([length,0,0])
+    DoveClipPairSane(h=hb, count=countb);
+  pillarlen = length - DoveClip_depth() * 2 + 2;
+  pilesw =
+    min(DoveClipPairSane_width(counta), DoveClipPairSane_width(countb)) - 0.5;
+  pilesh = min(ha, hb) - 0.5;
+  d = 0.25;
+  echo(pilesh);
+  translate([DoveClip_depth() - 1, 0, 0]) {
+    for (mir=[0,1]) mirror([0,mir,0]) translate([0,-pilesw/2,0]) {
+      mirror([1,0,0]) rotate([0,-90,0]) linear_extrude(height=pillarlen){
+	polygon([[0,0], [pillarh,0], [0,pillarw]]);
+	polygon([[pilesh,0], [pilesh-pillarh,0], [pilesh,pillarw]]);
+	polygon([[0,d], [0,webthick], [pilesh-d,webthick], [pilesh-d,0]]);
+      }
+    }
+  }
+}
+
+//DoveClipExtender(length=100, ha=16, hb=12, counta=3, countb=4);