introduce script to generate assembly animation. still needs cleanup

rack/assembly/slideHexNutsIntoYBarXYPlate.scad

@@ -0,0 +1,41 @@
+include <./common.scad>
+use <./attachXYTrays.scad>
+
+$vpt = [71,123,88];
+$vpr = [44,0,47];
+$vpd = 450;
+$vpf = 22.50;
+
+slideHexNutsIntoYBarXYPlate(at=$t);
+
+module slideHexNutsIntoYBarXYPlate(at=0) {
+
+  t = lerp(a=12,b=0,t=at);
+
+  attachXYTrays(at=1,r=0);
+
+  slideHexNuts(t=t);
+
+  multmatrix(upperXYTrayTrans)
+    slideHexNuts(t=t);
+
+  module plateHexNut(t) {
+    multmatrix(yBarBasePlateConnectorTrans)
+      translate(v=[_heatSetX+t, _heatSetY, 4 + _baseConnRecession]) // TODO gotta rename these
+        hexNut(rackFrameScrewType);
+  }
+
+  module slideHexNuts(t=0) {
+
+    plateHexNut(t=t);
+
+    translate(v=[xyPlateConnDx, 0,0])
+    plateHexNut(t=-t);
+
+    translate(v=[0, xyPlateConnDy,0])
+    plateHexNut(t=t);
+
+    translate(v=[xyPlateConnDx, xyPlateConnDy,0])
+    plateHexNut(t=-t);
+  }
+}