X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=reprap-play.git;a=blobdiff_plain;f=keyring-kay.scad;h=9ebb34ad7faa16df290b1ef44b88cb1f3f95b794;hp=c12b8914346c1ef98f714d7acbcb1acbfd42135e;hb=ff1f0529fe673119f08b754c44ab1772da27360c;hpb=e69943a75d807bc3e811add31396f57211afb5a0

diff --git a/keyring-kay.scad b/keyring-kay.scad
index c12b891..9ebb34a 100644
--- a/keyring-kay.scad
+++ b/keyring-kay.scad
@@ -4,22 +4,56 @@ letterheight = 25;
 linewidth = 3.5;
 letterthick = 2.5;
 
+basethick = 2.5;
+
+xborder = 5;
+yborder = 5;
+
 kdiag = 1;
+kprop = 0.50;
+
+diaglinewidth = linewidth * sqrt(1 + kdiag*kdiag);
+
+ringholerad = 2.5;
+ringedgewidth = 3;
+
+module kay_leg (transamount, llen, mir) {
+  translate([0,transamount,0])
+    mirror([0,mir,0])
+    translate([0,-0.1,0])
+    multmatrix([[1,kdiag,0,0],
+		[0,1,0,0],
+		[0,0,1,0],
+		[0,0,0,1]])
+    cube([diaglinewidth, llen + 0.1, letterthick]);
+}  
 
 module kay () {
   translate([0.1,0,0])
     cube([linewidth, letterheight, letterthick]);
-  translate([0,letterheight/2,0])
-    for (mir=[0,1]) {
-      mirror([0,mir,0])
-	translate([0,-0.1,0])
-	multmatrix([[1,kdiag,0,0],
-		    [0,1,0,0],
-		    [0,0,1,0],
-		    [0,0,0,1]])
-	cube([linewidth * sqrt(1 + kdiag*kdiag),
-	      letterheight/2 + 0.1, letterthick]);
-    }
+  kay_leg(letterheight*kprop, letterheight*(1-kprop), 0);
+  kay_leg(letterheight*kprop, letterheight*kprop, 1);
 }
 
-kay();
+totalw = letterheight*kprop + diaglinewidth + xborder*2;
+totalh = letterheight + yborder*2;
+basez = -(basethick-0.1);
+
+module main () {
+  kay();
+  translate([-xborder, -yborder, basez])
+    cube([totalw, totalh, basethick]);
+}
+
+module ring (rad, extra) {
+  translate([totalw/2 - xborder, totalh - yborder, basez-extra])
+    cylinder(r=rad, h=basethick + extra*2, $fn=30);
+}
+
+difference(){
+  union() {
+    main();
+    ring(ringholerad + ringedgewidth/2, 0);
+  }
+  ring(ringholerad, 1);
+}